diff --git a/.github/workflows/postgresql-16-pgdg-package-pgxs.yml b/.github/workflows/postgresql-16-pgdg-package-pgxs.yml
index dec59231..a54f8bfe 100644
--- a/.github/workflows/postgresql-16-pgdg-package-pgxs.yml
+++ b/.github/workflows/postgresql-16-pgdg-package-pgxs.yml
@@ -24,7 +24,7 @@ jobs:
         run: |
           sudo apt-get install -y libreadline6-dev systemtap-sdt-dev wget \
             zlib1g-dev libssl-dev libpam0g-dev bison flex libipc-run-perl \
-            libjson-c-dev libcurl4-openssl-dev
+            libcurl4-openssl-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
           wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
diff --git a/.github/workflows/postgresql-16-src-make-macos.yml b/.github/workflows/postgresql-16-src-make-macos.yml
index 060e0564..89b0edec 100644
--- a/.github/workflows/postgresql-16-src-make-macos.yml
+++ b/.github/workflows/postgresql-16-src-make-macos.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: macos-12
     steps:
       - name: Install dependencies
-        run: brew install json-c vault gnu-sed # All other required deps already installed in this image.
+        run: brew install vault gnu-sed # All other required deps already installed in this image.
 
       - name: Clone postgres repository
         uses: actions/checkout@v4
diff --git a/.github/workflows/postgresql-16-src-make-ssl11.yml b/.github/workflows/postgresql-16-src-make-ssl11.yml
index aa28557a..4c05e457 100644
--- a/.github/workflows/postgresql-16-src-make-ssl11.yml
+++ b/.github/workflows/postgresql-16-src-make-ssl11.yml
@@ -26,7 +26,7 @@ jobs:
             libxml2-dev libxslt-dev xsltproc libkrb5-dev libldap2-dev \
             libsystemd-dev gettext tcl-dev libperl-dev pkg-config \
             libselinux1-dev python3-dev \
-            uuid-dev liblz4-dev libjson-c-dev libcurl4-openssl-dev
+            uuid-dev liblz4-dev libcurl4-openssl-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
           wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
diff --git a/.github/workflows/postgresql-16-src-make.yml b/.github/workflows/postgresql-16-src-make.yml
index 0f397eb4..adaccabf 100644
--- a/.github/workflows/postgresql-16-src-make.yml
+++ b/.github/workflows/postgresql-16-src-make.yml
@@ -26,7 +26,7 @@ jobs:
             libxml2-dev libxslt-dev xsltproc libkrb5-dev libldap2-dev \
             libsystemd-dev gettext tcl-dev libperl-dev pkg-config clang-11 \
             llvm-11 llvm-11-dev libselinux1-dev python3-dev \
-            uuid-dev liblz4-dev libjson-c-dev libcurl4-openssl-dev
+            uuid-dev liblz4-dev libcurl4-openssl-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
           wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
diff --git a/.github/workflows/postgresql-16-src-meson-macos.yml b/.github/workflows/postgresql-16-src-meson-macos.yml
index 8249910f..4e13b021 100644
--- a/.github/workflows/postgresql-16-src-meson-macos.yml
+++ b/.github/workflows/postgresql-16-src-meson-macos.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: macos-12
     steps:
       - name: Install dependencies
-        run: brew install json-c meson vault gnu-sed # All other required deps already installed in this image.
+        run: brew install meson vault gnu-sed # All other required deps already installed in this image.
 
       - name: Clone postgres repository
         uses: actions/checkout@v4
diff --git a/.github/workflows/postgresql-16-src-meson-perf.yml b/.github/workflows/postgresql-16-src-meson-perf.yml
index 634bca2f..ad85b3db 100644
--- a/.github/workflows/postgresql-16-src-meson-perf.yml
+++ b/.github/workflows/postgresql-16-src-meson-perf.yml
@@ -29,7 +29,7 @@ jobs:
             libxml2-dev libxslt-dev xsltproc libkrb5-dev libldap2-dev \
             libsystemd-dev gettext tcl-dev libperl-dev pkg-config clang-11 \
             llvm-11 llvm-11-dev libselinux1-dev python3-dev \
-            uuid-dev liblz4-dev meson ninja-build libjson-c-dev \
+            uuid-dev liblz4-dev meson ninja-build \
             sysbench libcurl4-openssl-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
diff --git a/.github/workflows/postgresql-16-src-meson.yml b/.github/workflows/postgresql-16-src-meson.yml
index 55500533..33078a48 100644
--- a/.github/workflows/postgresql-16-src-meson.yml
+++ b/.github/workflows/postgresql-16-src-meson.yml
@@ -26,7 +26,7 @@ jobs:
             libxml2-dev libxslt-dev xsltproc libkrb5-dev libldap2-dev \
             libsystemd-dev gettext tcl-dev libperl-dev pkg-config clang-11 \
             llvm-11 llvm-11-dev libselinux1-dev python3-dev \
-            uuid-dev liblz4-dev meson ninja-build libjson-c-dev \
+            uuid-dev liblz4-dev meson ninja-build  \
             gpg wget libcurl4-openssl-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
diff --git a/README.md b/README.md
index 3964a0a2..c7750755 100644
--- a/README.md
+++ b/README.md
@@ -79,12 +79,12 @@ You are all set to create encrypted tables using `pg_tde`.
 
 * On Debian and Ubuntu:
 ```sh
-sudo apt install make gcc autoconf libjson-c-dev libcurl4-openssl-dev postgresql-server-dev-16
+sudo apt install make gcc autoconf libcurl4-openssl-dev postgresql-server-dev-16
 ```
 
 * On MacOS:
 ```sh
-brew install make autoconf curl json-c gettext postresql@16
+brew install make autoconf curl gettext postresql@16
 ```
 
 2. Install or build postgresql 16 [(see reference commit below)](#base-commit)
diff --git a/configure b/configure
index a8ebb6f2..1b040ebd 100755
--- a/configure
+++ b/configure
@@ -1,11 +1,11 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for pg_tde 0.1-mvp.
+# Generated by GNU Autoconf 2.71 for pg_tde 0.1-mvp.
 #
 # Report bugs to <https://github.com/Percona-Lab/pg_tde/issues>.
 #
 #
-# Copyright (C) 1992-1996, 1998-2017, 2020-2023 Free Software Foundation,
+# Copyright (C) 1992-1996, 1998-2017, 2020-2021 Free Software Foundation,
 # Inc.
 #
 #
@@ -17,6 +17,7 @@
 
 # Be more Bourne compatible
 DUALCASE=1; export DUALCASE # for MKS sh
+as_nop=:
 if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
 then :
   emulate sh
@@ -25,13 +26,12 @@ then :
   # is contrary to our usage.  Disable this feature.
   alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
-else case e in #(
-  e) case `(set -o) 2>/dev/null` in #(
+else $as_nop
+  case `(set -o) 2>/dev/null` in #(
   *posix*) :
     set -o posix ;; #(
   *) :
      ;;
-esac ;;
 esac
 fi
 
@@ -103,7 +103,7 @@ IFS=$as_save_IFS
 
      ;;
 esac
-# We did not find ourselves, most probably we were run as 'sh COMMAND'
+# We did not find ourselves, most probably we were run as `sh COMMAND'
 # in which case we are not to be found in the path.
 if test "x$as_myself" = x; then
   as_myself=$0
@@ -133,14 +133,15 @@ case $- in # ((((
 esac
 exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
 # Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed 'exec'.
+# out after a failed `exec'.
 printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
 exit 255
   fi
   # We don't want this to propagate to other subprocesses.
           { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
-  as_bourne_compatible="if test \${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+  as_bourne_compatible="as_nop=:
+if test \${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
 then :
   emulate sh
   NULLCMD=:
@@ -148,13 +149,12 @@ then :
   # is contrary to our usage.  Disable this feature.
   alias -g '\${1+\"\$@\"}'='\"\$@\"'
   setopt NO_GLOB_SUBST
-else case e in #(
-  e) case \`(set -o) 2>/dev/null\` in #(
+else \$as_nop
+  case \`(set -o) 2>/dev/null\` in #(
   *posix*) :
     set -o posix ;; #(
   *) :
      ;;
-esac ;;
 esac
 fi
 "
@@ -172,9 +172,8 @@ as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
 if ( set x; as_fn_ret_success y && test x = \"\$1\" )
 then :
 
-else case e in #(
-  e) exitcode=1; echo positional parameters were not saved. ;;
-esac
+else \$as_nop
+  exitcode=1; echo positional parameters were not saved.
 fi
 test x\$exitcode = x0 || exit 1
 blah=\$(echo \$(echo blah))
@@ -187,15 +186,14 @@ test -x / || exit 1"
   if (eval "$as_required") 2>/dev/null
 then :
   as_have_required=yes
-else case e in #(
-  e) as_have_required=no ;;
-esac
+else $as_nop
+  as_have_required=no
 fi
   if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null
 then :
 
-else case e in #(
-  e) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+else $as_nop
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 as_found=false
 for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
 do
@@ -228,13 +226,12 @@ IFS=$as_save_IFS
 if $as_found
 then :
 
-else case e in #(
-  e) if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+else $as_nop
+  if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
 	      as_run=a "$SHELL" -c "$as_bourne_compatible""$as_required" 2>/dev/null
 then :
   CONFIG_SHELL=$SHELL as_have_required=yes
-fi ;;
-esac
+fi
 fi
 
 
@@ -256,7 +253,7 @@ case $- in # ((((
 esac
 exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
 # Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed 'exec'.
+# out after a failed `exec'.
 printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
 exit 255
 fi
@@ -270,15 +267,13 @@ then :
     printf "%s\n" "$0: be upgraded to zsh 4.3.4 or later."
   else
     printf "%s\n" "$0: Please tell bug-autoconf@gnu.org and
-$0: https://github.com/Percona-Lab/pg_tde/issues
-$0: about your system, including any error possibly output
-$0: before this message. Then install a modern shell, or
-$0: manually run the script under such a shell if you do
-$0: have one."
+$0: https://github.com/Percona-Lab/pg_tde/issues about your
+$0: system, including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
   fi
   exit 1
-fi ;;
-esac
+fi
 fi
 fi
 SHELL=${CONFIG_SHELL-/bin/sh}
@@ -317,6 +312,14 @@ as_fn_exit ()
   as_fn_set_status $1
   exit $1
 } # as_fn_exit
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
 
 # as_fn_mkdir_p
 # -------------
@@ -385,12 +388,11 @@ then :
   {
     eval $1+=\$2
   }'
-else case e in #(
-  e) as_fn_append ()
+else $as_nop
+  as_fn_append ()
   {
     eval $1=\$$1\$2
-  } ;;
-esac
+  }
 fi # as_fn_append
 
 # as_fn_arith ARG...
@@ -404,14 +406,21 @@ then :
   {
     as_val=$(( $* ))
   }'
-else case e in #(
-  e) as_fn_arith ()
+else $as_nop
+  as_fn_arith ()
   {
     as_val=`expr "$@" || test $? -eq 1`
-  } ;;
-esac
+  }
 fi # as_fn_arith
 
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
 
 # as_fn_error STATUS ERROR [LINENO LOG_FD]
 # ----------------------------------------
@@ -485,8 +494,6 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
     /[$]LINENO/=
   ' <$as_myself |
     sed '
-      t clear
-      :clear
       s/[$]LINENO.*/&-/
       t lineno
       b
@@ -535,6 +542,7 @@ esac
 as_echo='printf %s\n'
 as_echo_n='printf %s'
 
+
 rm -f conf$$ conf$$.exe conf$$.file
 if test -d conf$$.dir; then
   rm -f conf$$.dir/conf$$.file
@@ -546,9 +554,9 @@ if (echo >conf$$.file) 2>/dev/null; then
   if ln -s conf$$.file conf$$ 2>/dev/null; then
     as_ln_s='ln -s'
     # ... but there are two gotchas:
-    # 1) On MSYS, both 'ln -s file dir' and 'ln file dir' fail.
-    # 2) DJGPP < 2.04 has no symlinks; 'ln -s' creates a wrapper executable.
-    # In both cases, we have to default to 'cp -pR'.
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
       as_ln_s='cp -pR'
   elif ln conf$$.file conf$$ 2>/dev/null; then
@@ -573,12 +581,10 @@ as_test_x='test -x'
 as_executable_p=as_fn_executable_p
 
 # Sed expression to map a string onto a valid CPP name.
-as_sed_cpp="y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g"
-as_tr_cpp="eval sed '$as_sed_cpp'" # deprecated
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
 
 # Sed expression to map a string onto a valid variable name.
-as_sed_sh="y%*+%pp%;s%[^_$as_cr_alnum]%_%g"
-as_tr_sh="eval sed '$as_sed_sh'" # deprecated
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
 
 
 test -n "$DJDIR" || exec 7<&0 </dev/null
@@ -702,7 +708,6 @@ SHELL'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
-with_jsonc
 with_libcurl
 with_libintl
 '
@@ -822,7 +827,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid feature name: '$ac_useropt'"
+      as_fn_error $? "invalid feature name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -848,7 +853,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid feature name: '$ac_useropt'"
+      as_fn_error $? "invalid feature name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -1061,7 +1066,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid package name: '$ac_useropt'"
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -1077,7 +1082,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid package name: '$ac_useropt'"
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -1107,8 +1112,8 @@ do
   | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
     x_libraries=$ac_optarg ;;
 
-  -*) as_fn_error $? "unrecognized option: '$ac_option'
-Try '$0 --help' for more information"
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
     ;;
 
   *=*)
@@ -1116,7 +1121,7 @@ Try '$0 --help' for more information"
     # Reject names that are not valid shell variable names.
     case $ac_envvar in #(
       '' | [0-9]* | *[!_$as_cr_alnum]* )
-      as_fn_error $? "invalid variable name: '$ac_envvar'" ;;
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
     esac
     eval $ac_envvar=\$ac_optarg
     export $ac_envvar ;;
@@ -1166,7 +1171,7 @@ do
   as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
 done
 
-# There might be people who depend on the old broken behavior: '$host'
+# There might be people who depend on the old broken behavior: `$host'
 # used to hold the argument of --host etc.
 # FIXME: To remove some day.
 build=$build_alias
@@ -1234,7 +1239,7 @@ if test ! -r "$srcdir/$ac_unique_file"; then
   test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
   as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
 fi
-ac_msg="sources are in $srcdir, but 'cd $srcdir' does not work"
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
 ac_abs_confdir=`(
 	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
 	pwd)`
@@ -1262,7 +1267,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures pg_tde 0.1-mvp to adapt to many kinds of systems.
+\`configure' configures pg_tde 0.1-mvp to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1276,11 +1281,11 @@ Configuration:
       --help=short        display options specific to this package
       --help=recursive    display the short help of all the included packages
   -V, --version           display version information and exit
-  -q, --quiet, --silent   do not print 'checking ...' messages
+  -q, --quiet, --silent   do not print \`checking ...' messages
       --cache-file=FILE   cache test results in FILE [disabled]
-  -C, --config-cache      alias for '--cache-file=config.cache'
+  -C, --config-cache      alias for \`--cache-file=config.cache'
   -n, --no-create         do not create output files
-      --srcdir=DIR        find the sources in DIR [configure dir or '..']
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
 
 Installation directories:
   --prefix=PREFIX         install architecture-independent files in PREFIX
@@ -1288,10 +1293,10 @@ Installation directories:
   --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                           [PREFIX]
 
-By default, 'make install' will install all the files in
-'$ac_default_prefix/bin', '$ac_default_prefix/lib' etc.  You can specify
-an installation prefix other than '$ac_default_prefix' using '--prefix',
-for instance '--prefix=\$HOME'.
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
 
 For better control, use the options below.
 
@@ -1335,7 +1340,6 @@ if test -n "$ac_init_help"; then
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
-  --with-jsonc=<path>     Location where json_object.h is installed
   --with-libcurl=<path>   Location where curl/curl.h is installed
   --with-libintl=<path>   Location where libintl.h is installed
 
@@ -1348,7 +1352,7 @@ Some influential environment variables:
   CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
               you have headers in a nonstandard directory <include dir>
 
-Use these variables to override the choices made by 'configure' or to help
+Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
 
 Report bugs to <https://github.com/Percona-Lab/pg_tde/issues>.
@@ -1416,9 +1420,9 @@ test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
 pg_tde configure 0.1-mvp
-generated by GNU Autoconf 2.72
+generated by GNU Autoconf 2.71
 
-Copyright (C) 2023 Free Software Foundation, Inc.
+Copyright (C) 2021 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1457,12 +1461,11 @@ printf "%s\n" "$ac_try_echo"; } >&5
        } && test -s conftest.$ac_objext
 then :
   ac_retval=0
-else case e in #(
-  e) printf "%s\n" "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-	ac_retval=1 ;;
-esac
+	ac_retval=1
 fi
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
@@ -1481,8 +1484,8 @@ printf %s "checking for $2... " >&6; }
 if eval test \${$3+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 #include <$2>
@@ -1490,12 +1493,10 @@ _ACEOF
 if ac_fn_c_try_compile "$LINENO"
 then :
   eval "$3=yes"
-else case e in #(
-  e) eval "$3=no" ;;
-esac
+else $as_nop
+  eval "$3=no"
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;
-esac
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 eval ac_res=\$$3
 	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
@@ -1535,12 +1536,11 @@ printf "%s\n" "$ac_try_echo"; } >&5
        }
 then :
   ac_retval=0
-else case e in #(
-  e) printf "%s\n" "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-	ac_retval=1 ;;
-esac
+	ac_retval=1
 fi
   # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
   # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
@@ -1576,7 +1576,7 @@ This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
 It was created by pg_tde $as_me 0.1-mvp, which was
-generated by GNU Autoconf 2.72.  Invocation command line was
+generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
 
@@ -1822,10 +1822,10 @@ esac
 printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}
     sed 's/^/| /' "$ac_site_file" >&5
     . "$ac_site_file" \
-      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "failed to load site script $ac_site_file
-See 'config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5; }
   fi
 done
 
@@ -1861,7 +1861,9 @@ struct stat;
 /* Most of the following tests are stolen from RCS 5.7 src/conf.sh.  */
 struct buf { int x; };
 struct buf * (*rcsopen) (struct buf *, struct stat *, int);
-static char *e (char **p, int i)
+static char *e (p, i)
+     char **p;
+     int i;
 {
   return p[i];
 }
@@ -1875,21 +1877,6 @@ static char *f (char * (*g) (char **, int), char **p, ...)
   return s;
 }
 
-/* C89 style stringification. */
-#define noexpand_stringify(a) #a
-const char *stringified = noexpand_stringify(arbitrary+token=sequence);
-
-/* C89 style token pasting.  Exercises some of the corner cases that
-   e.g. old MSVC gets wrong, but not very hard. */
-#define noexpand_concat(a,b) a##b
-#define expand_concat(a,b) noexpand_concat(a,b)
-extern int vA;
-extern int vbee;
-#define aye A
-#define bee B
-int *pvA = &expand_concat(v,aye);
-int *pvbee = &noexpand_concat(v,bee);
-
 /* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
    function prototypes and stuff, but not \xHH hex character constants.
    These do not provoke an error unfortunately, instead are silently treated
@@ -1917,19 +1904,16 @@ ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);
 
 # Test code for whether the C compiler supports C99 (global declarations)
 ac_c_conftest_c99_globals='
-/* Does the compiler advertise C99 conformance? */
+// Does the compiler advertise C99 conformance?
 #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L
 # error "Compiler does not advertise C99 conformance"
 #endif
 
-// See if C++-style comments work.
-
 #include <stdbool.h>
 extern int puts (const char *);
 extern int printf (const char *, ...);
 extern int dprintf (int, const char *, ...);
 extern void *malloc (size_t);
-extern void free (void *);
 
 // Check varargs macros.  These examples are taken from C99 6.10.3.5.
 // dprintf is used instead of fprintf to avoid needing to declare
@@ -1979,6 +1963,7 @@ typedef const char *ccp;
 static inline int
 test_restrict (ccp restrict text)
 {
+  // See if C++-style comments work.
   // Iterate through items via the restricted pointer.
   // Also check for declarations in for loops.
   for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)
@@ -2044,8 +2029,6 @@ ac_c_conftest_c99_main='
   ia->datasize = 10;
   for (int i = 0; i < ia->datasize; ++i)
     ia->data[i] = i * 1.234;
-  // Work around memory leak warnings.
-  free (ia);
 
   // Check named initializers.
   struct named_init ni = {
@@ -2067,7 +2050,7 @@ ac_c_conftest_c99_main='
 
 # Test code for whether the C compiler supports C11 (global declarations)
 ac_c_conftest_c11_globals='
-/* Does the compiler advertise C11 conformance? */
+// Does the compiler advertise C11 conformance?
 #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
 # error "Compiler does not advertise C11 conformance"
 #endif
@@ -2259,9 +2242,8 @@ IFS=$as_save_IFS
 if $as_found
 then :
 
-else case e in #(
-  e) as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5 ;;
-esac
+else $as_nop
+  as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5
 fi
 
 
@@ -2289,12 +2271,12 @@ for ac_var in $ac_precious_vars; do
   eval ac_new_val=\$ac_env_${ac_var}_value
   case $ac_old_set,$ac_new_set in
     set,)
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&5
-printf "%s\n" "$as_me: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&2;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
       ac_cache_corrupted=: ;;
     ,set)
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was not set in the previous run" >&5
-printf "%s\n" "$as_me: error: '$ac_var' was not set in the previous run" >&2;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
       ac_cache_corrupted=: ;;
     ,);;
     *)
@@ -2303,18 +2285,18 @@ printf "%s\n" "$as_me: error: '$ac_var' was not set in the previous run" >&2;}
 	ac_old_val_w=`echo x $ac_old_val`
 	ac_new_val_w=`echo x $ac_new_val`
 	if test "$ac_old_val_w" != "$ac_new_val_w"; then
-	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' has changed since the previous run:" >&5
-printf "%s\n" "$as_me: error: '$ac_var' has changed since the previous run:" >&2;}
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
 	  ac_cache_corrupted=:
 	else
-	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&5
-printf "%s\n" "$as_me: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&2;}
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+printf "%s\n" "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
 	  eval $ac_var=\$ac_old_val
 	fi
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  '$ac_old_val'" >&5
-printf "%s\n" "$as_me:   former value:  '$ac_old_val'" >&2;}
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: '$ac_new_val'" >&5
-printf "%s\n" "$as_me:   current value: '$ac_new_val'" >&2;}
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+printf "%s\n" "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+printf "%s\n" "$as_me:   current value: \`$ac_new_val'" >&2;}
       fi;;
   esac
   # Pass precious variables to config.status.
@@ -2330,11 +2312,11 @@ printf "%s\n" "$as_me:   current value: '$ac_new_val'" >&2;}
   fi
 done
 if $ac_cache_corrupted; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
 printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}
-  as_fn_error $? "run '${MAKE-make} distclean' and/or 'rm $cache_file'
+  as_fn_error $? "run \`${MAKE-make} distclean' and/or \`rm $cache_file'
 	    and start over" "$LINENO" 5
 fi
 ## -------------------- ##
@@ -2361,16 +2343,15 @@ printf %s "checking build system type... " >&6; }
 if test ${ac_cv_build+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_build_alias=$build_alias
+else $as_nop
+  ac_build_alias=$build_alias
 test "x$ac_build_alias" = x &&
   ac_build_alias=`$SHELL "${ac_aux_dir}config.guess"`
 test "x$ac_build_alias" = x &&
   as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
 ac_cv_build=`$SHELL "${ac_aux_dir}config.sub" $ac_build_alias` ||
   as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $ac_build_alias failed" "$LINENO" 5
- ;;
-esac
+
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
 printf "%s\n" "$ac_cv_build" >&6; }
@@ -2397,15 +2378,14 @@ printf %s "checking host system type... " >&6; }
 if test ${ac_cv_host+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test "x$host_alias" = x; then
+else $as_nop
+  if test "x$host_alias" = x; then
   ac_cv_host=$ac_cv_build
 else
   ac_cv_host=`$SHELL "${ac_aux_dir}config.sub" $host_alias` ||
     as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $host_alias failed" "$LINENO" 5
 fi
- ;;
-esac
+
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
 printf "%s\n" "$ac_cv_host" >&6; }
@@ -2462,8 +2442,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$CC"; then
+else $as_nop
+  if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2485,8 +2465,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
@@ -2508,8 +2487,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$ac_ct_CC"; then
+else $as_nop
+  if test -n "$ac_ct_CC"; then
   ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2531,8 +2510,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
@@ -2567,8 +2545,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$CC"; then
+else $as_nop
+  if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2590,8 +2568,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
@@ -2613,8 +2590,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$CC"; then
+else $as_nop
+  if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
   ac_prog_rejected=no
@@ -2653,8 +2630,7 @@ if test $ac_prog_rejected = yes; then
     ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"
   fi
 fi
-fi ;;
-esac
+fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
@@ -2678,8 +2654,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$CC"; then
+else $as_nop
+  if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2701,8 +2677,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
@@ -2728,8 +2703,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$ac_ct_CC"; then
+else $as_nop
+  if test -n "$ac_ct_CC"; then
   ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2751,8 +2726,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
@@ -2790,8 +2764,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$CC"; then
+else $as_nop
+  if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2813,8 +2787,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
@@ -2836,8 +2809,8 @@ printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_CC+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$ac_ct_CC"; then
+else $as_nop
+  if test -n "$ac_ct_CC"; then
   ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -2859,8 +2832,7 @@ done
   done
 IFS=$as_save_IFS
 
-fi ;;
-esac
+fi
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
@@ -2889,10 +2861,10 @@ fi
 fi
 
 
-test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "no acceptable C compiler found in \$PATH
-See 'config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5; }
 
 # Provide some information about the compiler.
 printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
@@ -2964,8 +2936,8 @@ printf "%s\n" "$ac_try_echo"; } >&5
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
 then :
-  # Autoconf-2.13 could set the ac_cv_exeext variable to 'no'.
-# So ignore a value of 'no', otherwise this would lead to 'EXEEXT = no'
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
 # in a Makefile.  We should not override ac_cv_exeext if it was cached,
 # so that the user can short-circuit this test for compilers unknown to
 # Autoconf.
@@ -2985,7 +2957,7 @@ do
 	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
 	fi
 	# We set ac_cv_exeext here because the later test for it is not
-	# safe: cross compilers may not add the suffix if given an '-o'
+	# safe: cross compilers may not add the suffix if given an `-o'
 	# argument, so we may need to know it at that point already.
 	# Even if this section looks crufty: it has the advantage of
 	# actually working.
@@ -2996,9 +2968,8 @@ do
 done
 test "$ac_cv_exeext" = no && ac_cv_exeext=
 
-else case e in #(
-  e) ac_file='' ;;
-esac
+else $as_nop
+  ac_file=''
 fi
 if test -z "$ac_file"
 then :
@@ -3007,14 +2978,13 @@ printf "%s\n" "no" >&6; }
 printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "C compiler cannot create executables
-See 'config.log' for more details" "$LINENO" 5; }
-else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; } ;;
-esac
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
 printf %s "checking for C compiler default output file name... " >&6; }
@@ -3038,10 +3008,10 @@ printf "%s\n" "$ac_try_echo"; } >&5
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
 then :
-  # If both 'conftest.exe' and 'conftest' are 'present' (well, observable)
-# catch 'conftest.exe'.  For instance with Cygwin, 'ls conftest' will
-# work properly (i.e., refer to 'conftest.exe'), while it won't with
-# 'rm'.
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
 for ac_file in conftest.exe conftest conftest.*; do
   test -f "$ac_file" || continue
   case $ac_file in
@@ -3051,12 +3021,11 @@ for ac_file in conftest.exe conftest conftest.*; do
     * ) break;;
   esac
 done
-else case e in #(
-  e) { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of executables: cannot compile and link
-See 'config.log' for more details" "$LINENO" 5; } ;;
-esac
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest conftest$ac_cv_exeext
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
@@ -3072,8 +3041,6 @@ int
 main (void)
 {
 FILE *f = fopen ("conftest.out", "w");
- if (!f)
-  return 1;
  return ferror (f) || fclose (f) != 0;
 
   ;
@@ -3113,27 +3080,26 @@ printf "%s\n" "$ac_try_echo"; } >&5
     if test "$cross_compiling" = maybe; then
 	cross_compiling=yes
     else
-	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot run C compiled programs.
-If you meant to cross compile, use '--host'.
-See 'config.log' for more details" "$LINENO" 5; }
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
     fi
   fi
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
 printf "%s\n" "$cross_compiling" >&6; }
 
-rm -f conftest.$ac_ext conftest$ac_cv_exeext \
-  conftest.o conftest.obj conftest.out
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
 ac_clean_files=$ac_clean_files_save
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
 printf %s "checking for suffix of object files... " >&6; }
 if test ${ac_cv_objext+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
@@ -3165,18 +3131,16 @@ then :
        break;;
   esac
 done
-else case e in #(
-  e) printf "%s\n" "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of object files: cannot compile
-See 'config.log' for more details" "$LINENO" 5; } ;;
-esac
+See \`config.log' for more details" "$LINENO" 5; }
 fi
-rm -f conftest.$ac_cv_objext conftest.$ac_ext ;;
-esac
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
 printf "%s\n" "$ac_cv_objext" >&6; }
@@ -3187,8 +3151,8 @@ printf %s "checking whether the compiler supports GNU C... " >&6; }
 if test ${ac_cv_c_compiler_gnu+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
@@ -3205,14 +3169,12 @@ _ACEOF
 if ac_fn_c_try_compile "$LINENO"
 then :
   ac_compiler_gnu=yes
-else case e in #(
-  e) ac_compiler_gnu=no ;;
-esac
+else $as_nop
+  ac_compiler_gnu=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 ac_cv_c_compiler_gnu=$ac_compiler_gnu
- ;;
-esac
+
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
 printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; }
@@ -3230,8 +3192,8 @@ printf %s "checking whether $CC accepts -g... " >&6; }
 if test ${ac_cv_prog_cc_g+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_save_c_werror_flag=$ac_c_werror_flag
+else $as_nop
+  ac_save_c_werror_flag=$ac_c_werror_flag
    ac_c_werror_flag=yes
    ac_cv_prog_cc_g=no
    CFLAGS="-g"
@@ -3249,8 +3211,8 @@ _ACEOF
 if ac_fn_c_try_compile "$LINENO"
 then :
   ac_cv_prog_cc_g=yes
-else case e in #(
-  e) CFLAGS=""
+else $as_nop
+  CFLAGS=""
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -3265,8 +3227,8 @@ _ACEOF
 if ac_fn_c_try_compile "$LINENO"
 then :
 
-else case e in #(
-  e) ac_c_werror_flag=$ac_save_c_werror_flag
+else $as_nop
+  ac_c_werror_flag=$ac_save_c_werror_flag
 	 CFLAGS="-g"
 	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -3283,15 +3245,12 @@ if ac_fn_c_try_compile "$LINENO"
 then :
   ac_cv_prog_cc_g=yes
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;
-esac
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;
-esac
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-   ac_c_werror_flag=$ac_save_c_werror_flag ;;
-esac
+   ac_c_werror_flag=$ac_save_c_werror_flag
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
 printf "%s\n" "$ac_cv_prog_cc_g" >&6; }
@@ -3318,8 +3277,8 @@ printf %s "checking for $CC option to enable C11 features... " >&6; }
 if test ${ac_cv_prog_cc_c11+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_cv_prog_cc_c11=no
+else $as_nop
+  ac_cv_prog_cc_c11=no
 ac_save_CC=$CC
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -3336,28 +3295,25 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam
   test "x$ac_cv_prog_cc_c11" != "xno" && break
 done
 rm -f conftest.$ac_ext
-CC=$ac_save_CC ;;
-esac
+CC=$ac_save_CC
 fi
 
 if test "x$ac_cv_prog_cc_c11" = xno
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
 printf "%s\n" "unsupported" >&6; }
-else case e in #(
-  e) if test "x$ac_cv_prog_cc_c11" = x
+else $as_nop
+  if test "x$ac_cv_prog_cc_c11" = x
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
 printf "%s\n" "none needed" >&6; }
-else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
 printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }
-     CC="$CC $ac_cv_prog_cc_c11" ;;
-esac
+     CC="$CC $ac_cv_prog_cc_c11"
 fi
   ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11
-  ac_prog_cc_stdc=c11 ;;
-esac
+  ac_prog_cc_stdc=c11
 fi
 fi
 if test x$ac_prog_cc_stdc = xno
@@ -3367,8 +3323,8 @@ printf %s "checking for $CC option to enable C99 features... " >&6; }
 if test ${ac_cv_prog_cc_c99+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_cv_prog_cc_c99=no
+else $as_nop
+  ac_cv_prog_cc_c99=no
 ac_save_CC=$CC
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -3385,28 +3341,25 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam
   test "x$ac_cv_prog_cc_c99" != "xno" && break
 done
 rm -f conftest.$ac_ext
-CC=$ac_save_CC ;;
-esac
+CC=$ac_save_CC
 fi
 
 if test "x$ac_cv_prog_cc_c99" = xno
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
 printf "%s\n" "unsupported" >&6; }
-else case e in #(
-  e) if test "x$ac_cv_prog_cc_c99" = x
+else $as_nop
+  if test "x$ac_cv_prog_cc_c99" = x
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
 printf "%s\n" "none needed" >&6; }
-else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
 printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }
-     CC="$CC $ac_cv_prog_cc_c99" ;;
-esac
+     CC="$CC $ac_cv_prog_cc_c99"
 fi
   ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99
-  ac_prog_cc_stdc=c99 ;;
-esac
+  ac_prog_cc_stdc=c99
 fi
 fi
 if test x$ac_prog_cc_stdc = xno
@@ -3416,8 +3369,8 @@ printf %s "checking for $CC option to enable C89 features... " >&6; }
 if test ${ac_cv_prog_cc_c89+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_cv_prog_cc_c89=no
+else $as_nop
+  ac_cv_prog_cc_c89=no
 ac_save_CC=$CC
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -3434,28 +3387,25 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam
   test "x$ac_cv_prog_cc_c89" != "xno" && break
 done
 rm -f conftest.$ac_ext
-CC=$ac_save_CC ;;
-esac
+CC=$ac_save_CC
 fi
 
 if test "x$ac_cv_prog_cc_c89" = xno
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
 printf "%s\n" "unsupported" >&6; }
-else case e in #(
-  e) if test "x$ac_cv_prog_cc_c89" = x
+else $as_nop
+  if test "x$ac_cv_prog_cc_c89" = x
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
 printf "%s\n" "none needed" >&6; }
-else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
 printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }
-     CC="$CC $ac_cv_prog_cc_c89" ;;
-esac
+     CC="$CC $ac_cv_prog_cc_c89"
 fi
   ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89
-  ac_prog_cc_stdc=c89 ;;
-esac
+  ac_prog_cc_stdc=c89
 fi
 fi
 
@@ -3497,115 +3447,12 @@ printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
 fi
  {
 
-# Check whether --with-jsonc was given.
-if test ${with_jsonc+y}
-then :
-  withval=$with_jsonc;
-else case e in #(
-  e) with_jsonc=default ;;
-esac
-fi
-
-	if test "x$with_jsonc" == xdefault
-then :
-
-		case $host_os in
-			darwin*) libpathx=($(brew --cellar)/json-c/*)
-						tde_CPPFLAGS="$tde_CPPFLAGS -I$libpathx/include/json-c"
-						tde_LDFLAGS="$tde_LDFLAGS -L$libpathx/lib -ljson-c" ;;
-				  *) tde_CPPFLAGS="$tde_CPPFLAGS -I/usr/include/json-c"
-				  		tde_LDFLAGS="$tde_LDFLAGS -ljson-c" ;;
-		esac
-
-else case e in #(
-  e)  #AS_ELSE
-		tde_CPPFLAGS="$tde_CPPFLAGS -I${with_jsonc}/include"
-		tde_LDFLAGS="$tde_LDFLAGS -L${with_jsonc}/lib -ljson-c"
-	 ;;
-esac
-fi
-	LDFLAGS="$LDFLAGS $tde_LDFLAGS"
-	CPPFLAGS="$CPPFLAGS $tde_CPPFLAGS"
-
-	ac_fn_c_check_header_compile "$LINENO" "json_object.h" "ac_cv_header_json_object_h" "$ac_includes_default"
-if test "x$ac_cv_header_json_object_h" = xyes
-then :
-
-else case e in #(
-  e)
-		as_fn_error $? "header file <json_object.h> is required, try specifying --with-jsonc" "$LINENO" 5
-	 ;;
-esac
-fi
-
-
-
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for json_object_get in -ljson-c" >&5
-printf %s "checking for json_object_get in -ljson-c... " >&6; }
-if test ${ac_cv_lib_json_c_json_object_get+y}
-then :
-  printf %s "(cached) " >&6
-else case e in #(
-  e) ac_check_lib_save_LIBS=$LIBS
-LIBS="-ljson-c  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.
-   The 'extern "C"' is for builds by C++ compilers;
-   although this is not generally supported in C code supporting it here
-   has little cost and some practical benefit (sr 110532).  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char json_object_get (void);
-int
-main (void)
-{
-return json_object_get ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_json_c_json_object_get=yes
-else case e in #(
-  e) ac_cv_lib_json_c_json_object_get=no ;;
-esac
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS ;;
-esac
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_json_c_json_object_get" >&5
-printf "%s\n" "$ac_cv_lib_json_c_json_object_get" >&6; }
-if test "x$ac_cv_lib_json_c_json_object_get" = xyes
-then :
-  printf "%s\n" "#define HAVE_LIBJSON_C 1" >>confdefs.h
-
-  LIBS="-ljson-c $LIBS"
-
-else case e in #(
-  e)
-		as_fn_error $? "jsonc was not found, try specifying --with-jsonc" "$LINENO" 5
-	 ;;
-esac
-fi
-
-}
- {
-
 # Check whether --with-libcurl was given.
 if test ${with_libcurl+y}
 then :
   withval=$with_libcurl;
-else case e in #(
-  e) with_libcurl=default ;;
-esac
+else $as_nop
+  with_libcurl=default
 fi
 
 	if test "x$with_libcurl" == xdefault
@@ -3619,12 +3466,11 @@ then :
 				  		tde_LDFLAGS="$tde_LDFLAGS -lcurl" ;;
 		esac
 
-else case e in #(
-  e)  #AS_ELSE
+else $as_nop
+   #AS_ELSE
 		tde_CPPFLAGS="$tde_CPPFLAGS -I${with_libcurl}/include"
 		tde_LDFLAGS="$tde_LDFLAGS -L${with_libcurl}/lib -lcurl"
-	 ;;
-esac
+
 fi
 	LDFLAGS="$LDFLAGS $tde_LDFLAGS"
 	CPPFLAGS="$CPPFLAGS $tde_CPPFLAGS"
@@ -3633,11 +3479,10 @@ fi
 if test "x$ac_cv_header_curl_curl_h" = xyes
 then :
 
-else case e in #(
-  e)
+else $as_nop
+
 		as_fn_error $? "header file <curl/curl.h> is required, try specifying --with-libcurl" "$LINENO" 5
-	 ;;
-esac
+
 fi
 
 
@@ -3647,22 +3492,16 @@ printf %s "checking for curl_easy_setopt in -lcurl... " >&6; }
 if test ${ac_cv_lib_curl_curl_easy_setopt+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_check_lib_save_LIBS=$LIBS
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
 LIBS="-lcurl  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.
-   The 'extern "C"' is for builds by C++ compilers;
-   although this is not generally supported in C code supporting it here
-   has little cost and some practical benefit (sr 110532).  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char curl_easy_setopt (void);
+   builtin and then its argument prototype would still apply.  */
+char curl_easy_setopt ();
 int
 main (void)
 {
@@ -3674,14 +3513,12 @@ _ACEOF
 if ac_fn_c_try_link "$LINENO"
 then :
   ac_cv_lib_curl_curl_easy_setopt=yes
-else case e in #(
-  e) ac_cv_lib_curl_curl_easy_setopt=no ;;
-esac
+else $as_nop
+  ac_cv_lib_curl_curl_easy_setopt=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS ;;
-esac
+LIBS=$ac_check_lib_save_LIBS
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curl_curl_easy_setopt" >&5
 printf "%s\n" "$ac_cv_lib_curl_curl_easy_setopt" >&6; }
@@ -3691,11 +3528,10 @@ then :
 
   LIBS="-lcurl $LIBS"
 
-else case e in #(
-  e)
+else $as_nop
+
 		as_fn_error $? "libcurl was not found, try specifying --with-libcurl" "$LINENO" 5
-	 ;;
-esac
+
 fi
 
 }
@@ -3708,9 +3544,8 @@ case $host_os in
 if test ${with_libintl+y}
 then :
   withval=$with_libintl;
-else case e in #(
-  e) with_libintl=default ;;
-esac
+else $as_nop
+  with_libintl=default
 fi
 
 	if test "x$with_libintl" == xdefault
@@ -3724,12 +3559,11 @@ then :
 				  		tde_LDFLAGS="$tde_LDFLAGS -lintl" ;;
 		esac
 
-else case e in #(
-  e)  #AS_ELSE
+else $as_nop
+   #AS_ELSE
 		tde_CPPFLAGS="$tde_CPPFLAGS -I${with_libintl}/include"
 		tde_LDFLAGS="$tde_LDFLAGS -L${with_libintl}/lib -lintl"
-	 ;;
-esac
+
 fi
 	LDFLAGS="$LDFLAGS $tde_LDFLAGS"
 	CPPFLAGS="$CPPFLAGS $tde_CPPFLAGS"
@@ -3738,11 +3572,10 @@ fi
 if test "x$ac_cv_header_libintl_h" = xyes
 then :
 
-else case e in #(
-  e)
+else $as_nop
+
 		as_fn_error $? "header file <libintl.h> is required, try specifying --with-libintl" "$LINENO" 5
-	 ;;
-esac
+
 fi
 
 
@@ -3752,22 +3585,16 @@ printf %s "checking for ngettext in -lintl... " >&6; }
 if test ${ac_cv_lib_intl_ngettext+y}
 then :
   printf %s "(cached) " >&6
-else case e in #(
-  e) ac_check_lib_save_LIBS=$LIBS
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
 LIBS="-lintl  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.
-   The 'extern "C"' is for builds by C++ compilers;
-   although this is not generally supported in C code supporting it here
-   has little cost and some practical benefit (sr 110532).  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char ngettext (void);
+   builtin and then its argument prototype would still apply.  */
+char ngettext ();
 int
 main (void)
 {
@@ -3779,14 +3606,12 @@ _ACEOF
 if ac_fn_c_try_link "$LINENO"
 then :
   ac_cv_lib_intl_ngettext=yes
-else case e in #(
-  e) ac_cv_lib_intl_ngettext=no ;;
-esac
+else $as_nop
+  ac_cv_lib_intl_ngettext=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS ;;
-esac
+LIBS=$ac_check_lib_save_LIBS
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_intl_ngettext" >&5
 printf "%s\n" "$ac_cv_lib_intl_ngettext" >&6; }
@@ -3796,11 +3621,10 @@ then :
 
   LIBS="-lintl $LIBS"
 
-else case e in #(
-  e)
+else $as_nop
+
 		as_fn_error $? "libintl was not found, try specifying --with-libintl" "$LINENO" 5
-	 ;;
-esac
+
 fi
 
 }
@@ -3823,8 +3647,8 @@ cat >confcache <<\_ACEOF
 # config.status only pays attention to the cache file if you give it
 # the --recheck option to rerun configure.
 #
-# 'ac_cv_env_foo' variables (set or unset) will be overridden when
-# loading this file, other *unset* 'ac_cv_foo' will be assigned the
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
 # following values.
 
 _ACEOF
@@ -3854,14 +3678,14 @@ printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;}
   (set) 2>&1 |
     case $as_nl`(ac_space=' '; set) 2>&1` in #(
     *${as_nl}ac_space=\ *)
-      # 'set' does not quote correctly, so add quotes: double-quote
+      # `set' does not quote correctly, so add quotes: double-quote
       # substitution turns \\\\ into \\, and sed turns \\ into \.
       sed -n \
 	"s/'/'\\\\''/g;
 	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
       ;; #(
     *)
-      # 'set' quotes correctly as required by POSIX, so do not add quotes.
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
       sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
       ;;
     esac |
@@ -3925,7 +3749,9 @@ s/^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\)/-D\1=\2/g
 t quote
 b any
 :quote
-s/[][	 `~#$^&*(){}\\|;'\''"<>?]/\\&/g
+s/[	 `~#$^&*(){}\\|;'\''"<>?]/\\&/g
+s/\[/\\&/g
+s/\]/\\&/g
 s/\$/$$/g
 H
 :any
@@ -3985,6 +3811,7 @@ cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
 
 # Be more Bourne compatible
 DUALCASE=1; export DUALCASE # for MKS sh
+as_nop=:
 if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
 then :
   emulate sh
@@ -3993,13 +3820,12 @@ then :
   # is contrary to our usage.  Disable this feature.
   alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
-else case e in #(
-  e) case `(set -o) 2>/dev/null` in #(
+else $as_nop
+  case `(set -o) 2>/dev/null` in #(
   *posix*) :
     set -o posix ;; #(
   *) :
      ;;
-esac ;;
 esac
 fi
 
@@ -4071,7 +3897,7 @@ IFS=$as_save_IFS
 
      ;;
 esac
-# We did not find ourselves, most probably we were run as 'sh COMMAND'
+# We did not find ourselves, most probably we were run as `sh COMMAND'
 # in which case we are not to be found in the path.
 if test "x$as_myself" = x; then
   as_myself=$0
@@ -4100,6 +3926,7 @@ as_fn_error ()
 } # as_fn_error
 
 
+
 # as_fn_set_status STATUS
 # -----------------------
 # Set $? to STATUS, without forking.
@@ -4139,12 +3966,11 @@ then :
   {
     eval $1+=\$2
   }'
-else case e in #(
-  e) as_fn_append ()
+else $as_nop
+  as_fn_append ()
   {
     eval $1=\$$1\$2
-  } ;;
-esac
+  }
 fi # as_fn_append
 
 # as_fn_arith ARG...
@@ -4158,12 +3984,11 @@ then :
   {
     as_val=$(( $* ))
   }'
-else case e in #(
-  e) as_fn_arith ()
+else $as_nop
+  as_fn_arith ()
   {
     as_val=`expr "$@" || test $? -eq 1`
-  } ;;
-esac
+  }
 fi # as_fn_arith
 
 
@@ -4246,9 +4071,9 @@ if (echo >conf$$.file) 2>/dev/null; then
   if ln -s conf$$.file conf$$ 2>/dev/null; then
     as_ln_s='ln -s'
     # ... but there are two gotchas:
-    # 1) On MSYS, both 'ln -s file dir' and 'ln file dir' fail.
-    # 2) DJGPP < 2.04 has no symlinks; 'ln -s' creates a wrapper executable.
-    # In both cases, we have to default to 'cp -pR'.
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
       as_ln_s='cp -pR'
   elif ln conf$$.file conf$$ 2>/dev/null; then
@@ -4329,12 +4154,10 @@ as_test_x='test -x'
 as_executable_p=as_fn_executable_p
 
 # Sed expression to map a string onto a valid CPP name.
-as_sed_cpp="y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g"
-as_tr_cpp="eval sed '$as_sed_cpp'" # deprecated
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
 
 # Sed expression to map a string onto a valid variable name.
-as_sed_sh="y%*+%pp%;s%[^_$as_cr_alnum]%_%g"
-as_tr_sh="eval sed '$as_sed_sh'" # deprecated
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
 
 
 exec 6>&1
@@ -4350,7 +4173,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # values after options handling.
 ac_log="
 This file was extended by pg_tde $as_me 0.1-mvp, which was
-generated by GNU Autoconf 2.72.  Invocation command line was
+generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -4377,7 +4200,7 @@ _ACEOF
 
 cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 ac_cs_usage="\
-'$as_me' instantiates files and other configuration actions
+\`$as_me' instantiates files and other configuration actions
 from templates according to the current configuration.  Unless the files
 and actions are specified as TAGs, all are instantiated by default.
 
@@ -4405,10 +4228,10 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
 pg_tde config.status 0.1-mvp
-configured by $0, generated by GNU Autoconf 2.72,
+configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2023 Free Software Foundation, Inc.
+Copyright (C) 2021 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
@@ -4465,8 +4288,8 @@ do
     ac_cs_silent=: ;;
 
   # This is an error.
-  -*) as_fn_error $? "unrecognized option: '$1'
-Try '$0 --help' for more information." ;;
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
 
   *) as_fn_append ac_config_targets " $1"
      ac_need_defaults=false ;;
@@ -4516,7 +4339,7 @@ do
   case $ac_config_target in
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
 
-  *) as_fn_error $? "invalid argument: '$ac_config_target'" "$LINENO" 5;;
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
 done
 
@@ -4534,7 +4357,7 @@ fi
 # creating and moving files from /tmp can sometimes cause problems.
 # Hook for its removal unless debugging.
 # Note that there is a small window in which the directory will not be cleaned:
-# after its creation but before its name has been assigned to '$tmp'.
+# after its creation but before its name has been assigned to `$tmp'.
 $debug ||
 {
   tmp= ac_tmp=
@@ -4558,7 +4381,7 @@ ac_tmp=$tmp
 
 # Set up the scripts for CONFIG_FILES section.
 # No need to generate them if there are no CONFIG_FILES.
-# This happens for instance with './config.status config.h'.
+# This happens for instance with `./config.status config.h'.
 if test -n "$CONFIG_FILES"; then
 
 
@@ -4724,7 +4547,7 @@ do
   esac
   case $ac_mode$ac_tag in
   :[FHL]*:*);;
-  :L* | :C*:*) as_fn_error $? "invalid tag '$ac_tag'" "$LINENO" 5;;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
   :[FH]-) ac_tag=-:-;;
   :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
   esac
@@ -4746,19 +4569,19 @@ do
       -) ac_f="$ac_tmp/stdin";;
       *) # Look for the file first in the build tree, then in the source tree
 	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
-	 # because $ac_f cannot contain ':'.
+	 # because $ac_f cannot contain `:'.
 	 test -f "$ac_f" ||
 	   case $ac_f in
 	   [\\/$]*) false;;
 	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
 	   esac ||
-	   as_fn_error 1 "cannot find input file: '$ac_f'" "$LINENO" 5;;
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
       esac
       case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
       as_fn_append ac_file_inputs " '$ac_f'"
     done
 
-    # Let's still pretend it is 'configure' which instantiates (i.e., don't
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
     # use $as_me), people would be surprised to read:
     #    /* config.h.  Generated by config.status.  */
     configure_input='Generated from '`
@@ -4882,7 +4705,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 esac
 _ACEOF
 
-# Neutralize VPATH when '$srcdir' = '.'.
+# Neutralize VPATH when `$srcdir' = `.'.
 # Shell code in configure.ac might set extrasub.
 # FIXME: do we really want to maintain this feature?
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
@@ -4911,9 +4734,9 @@ test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
   { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
   { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
       "$ac_tmp/out"`; test -z "$ac_out"; } &&
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable 'datarootdir'
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&5
-printf "%s\n" "$as_me: WARNING: $ac_file contains a reference to the variable 'datarootdir'
+printf "%s\n" "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&2;}
 
   rm -f "$ac_tmp/stdin"
diff --git a/configure.ac b/configure.ac
index 97097598..409c2330 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,7 +45,6 @@ AC_DEFUN([REQUIRE_LIB], [ {
 
 #=======================================
 
-REQUIRE_LIB(jsonc, json-c, json-c, json_object_get, json-c, json_object.h)
 REQUIRE_LIB(libcurl, curl, curl, curl_easy_setopt, curl, curl/curl.h)
 
 case $host_os in
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4ade8616..c8b46154 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -3,7 +3,6 @@ FROM postgres:16
 RUN apt-get update; \
     apt-get install -y --no-install-recommends \
     curl \
-    libjson-c-dev \
     libssl-dev \
     gcc \
     postgresql-server-dev-16 \
diff --git a/documentation/docs/install.md b/documentation/docs/install.md
index 6ef433a1..0cb5a96d 100644
--- a/documentation/docs/install.md
+++ b/documentation/docs/install.md
@@ -21,7 +21,7 @@ Install `pg_tde` using one of available installation methods:
     1. To build `pg_tde` from source code, you require the following on Ubuntu/Debian:
 
         ```sh
-        sudo apt install make gcc libjson-c-dev postgresql-server-dev-16 libcurl4-openssl-dev
+        sudo apt install make gcc postgresql-server-dev-16 libcurl4-openssl-dev
         ```
 
     2. [Install Percona Distribution for PostgreSQL 16](https://docs.percona.com/postgresql/16/installing.html) or [upstream PostgreSQL 16](https://www.postgresql.org/download/)
diff --git a/meson.build b/meson.build
index e6f8e73e..94ba75e4 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,4 @@
 
-# libjson-c-dev on ubuntu
-jsondep = dependency('json-c')
 curldep = dependency('libcurl')
 
 pg_tde_sources = files(
@@ -37,7 +35,7 @@ pg_tde_sources = files(
 
 incdir = include_directories('src/include')
 
-deps_update = {'dependencies': contrib_mod_args.get('dependencies') + [jsondep, curldep]}
+deps_update = {'dependencies': contrib_mod_args.get('dependencies') + [curldep]}
 
 mod_args = contrib_mod_args + deps_update
 
diff --git a/src/catalog/tde_keyring.c b/src/catalog/tde_keyring.c
index 9f934778..57e65559 100644
--- a/src/catalog/tde_keyring.c
+++ b/src/catalog/tde_keyring.c
@@ -15,7 +15,6 @@
 #include "access/skey.h"
 #include "access/relscan.h"
 #include "utils/builtins.h"
-#include "utils/builtins.h"
 #include "access/relation.h"
 #include "catalog/namespace.h"
 #include "utils/lsyscache.h"
diff --git a/src/include/keyring/keyring_config.h b/src/include/keyring/keyring_config.h
index 628a0fce..b458c3bd 100644
--- a/src/include/keyring/keyring_config.h
+++ b/src/include/keyring/keyring_config.h
@@ -4,8 +4,6 @@
 
 #include "postgres.h"
 
-#include <json.h>
-
 enum KeyringProvider
 {
 	PROVIDER_UNKNOWN,
@@ -17,11 +15,4 @@ extern enum KeyringProvider keyringProvider;
 
 void keyringRegisterVariables(void);
 
-
-// If it's a hash, tries to retrieve the remote value
-// { type: 'remote'. url: 'http://...' }
-// If it doesn't have a type key / not remote / ... returns NULL
-// Otherwise it retuns the JSON value interpreted as a string
-const char* keyringParseStringParam(json_object* object);
-
 #endif // KEYRING_CONFIG_H
diff --git a/src/keyring/keyring_config.c b/src/keyring/keyring_config.c
index 7e7c0f62..2bee18f3 100644
--- a/src/keyring/keyring_config.c
+++ b/src/keyring/keyring_config.c
@@ -6,7 +6,6 @@
 #include <stdio.h>
 #include <assert.h>
 #include <unistd.h>
-#include <json.h>
 
 #include "utils/guc.h"
 
@@ -16,13 +15,3 @@ void keyringRegisterVariables(void)
 {
 	// nop for now
 }
-
-const char* keyringParseStringParam(json_object* object)
-{
-	if(json_object_get_type(object) == json_type_object)
-	{
-		elog(WARNING, "Remote parameters are not yet implemented");
-	}
-
-	return json_object_get_string(object);
-}
diff --git a/src/keyring/keyring_vault.c b/src/keyring/keyring_vault.c
index 6f9ee00a..9a9b9849 100644
--- a/src/keyring/keyring_vault.c
+++ b/src/keyring/keyring_vault.c
@@ -16,9 +16,11 @@
 #include "keyring/keyring_curl.h"
 #include "keyring/keyring_api.h"
 #include "pg_tde_defines.h"
-
+#include "fmgr.h"
+#include "utils/fmgrprotos.h"
+#include "utils/builtins.h"
+	
 #include <stdio.h>
-#include <json.h>
 
 #include <curl/curl.h>
 
@@ -128,18 +130,18 @@ set_key_by_name(GenericKeyring* keyring, keyInfo *key, bool throw_error)
 	char url[VAULT_URL_MAX_LEN];
 	CurlString str;
 	long httpCode = 0;
-
-	json_object *request = json_object_new_object();
-	json_object *data = json_object_new_object();
+	char jsonText[512];
 	char keyData[64];
 	int keyLen = 0;
 
 	Assert(key != NULL);
 
+	// Since we are only building a very limited JSON with a single base64 string, we build it by hand
+	// Simpler than using the limited pg json api
 	keyLen = pg_b64_encode((char *)key->data.data, key->data.len, keyData, 64);
 	keyData[keyLen] = 0;
-	json_object_object_add(data, "key", json_object_new_string(keyData));
-	json_object_object_add(request, "data", data);
+	
+	snprintf(jsonText, 512, "{\"data\":{\"key\":\"%s\"}}", keyData);
 
 #if KEYRING_DEBUG
 	elog(DEBUG1, "Sending base64 key: %s", keyData);
@@ -147,11 +149,10 @@ set_key_by_name(GenericKeyring* keyring, keyInfo *key, bool throw_error)
 
 	get_keyring_vault_url(vault_keyring, key->name.name, url, sizeof(url));
 
-	if (!curl_perform(vault_keyring, url, &str, &httpCode, json_object_to_json_string(request)))
+	if (!curl_perform(vault_keyring, url, &str, &httpCode, jsonText))
 	{
 		if (str.ptr != NULL)
 			pfree(str.ptr);
-		json_object_put(request);
 
 		ereport(throw_error ? ERROR : WARNING,
 				(errmsg("HTTP(S) request to keyring provider \"%s\" failed",
@@ -160,12 +161,12 @@ set_key_by_name(GenericKeyring* keyring, keyInfo *key, bool throw_error)
 		return KEYRING_CODE_INVALID_RESPONSE;
 	}
 
-	json_object_put(request);
 	if (str.ptr != NULL)
 		pfree(str.ptr);
 
 	if (httpCode / 100 == 2)
 		return KEYRING_CODE_SUCCESS;
+
 	return KEYRING_CODE_INVALID_RESPONSE;
 }
 
@@ -176,13 +177,13 @@ get_key_by_name(GenericKeyring *keyring, const char *key_name, bool throw_error,
 	keyInfo* key = NULL;
 	char url[VAULT_URL_MAX_LEN];
 	CurlString str;
-	json_object *response = NULL;
 	long httpCode = 0;
 
-	json_object *data = NULL;
-	json_object *data2 = NULL;
-	json_object *keyO = NULL;
-	const char *response_key = NULL;
+	Datum dataJson;
+	Datum data2Json;
+	Datum keyJson;
+
+	const char* responseKey;
 
 	get_keyring_vault_url(vault_keyring, key_name, url, sizeof(url));
 
@@ -210,64 +211,29 @@ get_key_by_name(GenericKeyring *keyring, const char *key_name, bool throw_error,
 		goto cleanup;
 	}
 
-	response = json_tokener_parse(str.ptr);
-
-	if (response == NULL)
+	PG_TRY();
 	{
-		*return_code = KEYRING_CODE_INVALID_RESPONSE;
-		ereport(throw_error ? ERROR : WARNING,
-				(errmsg("keyring provider \"%s\" returned invalid JSON",
-						vault_keyring->keyring.provider_name)));
-		goto cleanup;
+		dataJson = DirectFunctionCall2(json_object_field_text, CStringGetTextDatum(str.ptr), CStringGetTextDatum("data"));
+		data2Json = DirectFunctionCall2(json_object_field_text, dataJson, CStringGetTextDatum("data"));
+		keyJson = DirectFunctionCall2(json_object_field_text, data2Json, CStringGetTextDatum("key"));
+		responseKey = TextDatumGetCString(keyJson);
 	}
-
-	if (!json_object_object_get_ex(response, "data", &data))
+	PG_CATCH();
 	{
 		*return_code = KEYRING_CODE_INVALID_RESPONSE;
 		ereport(throw_error ? ERROR : WARNING,
-				(errmsg("keyring provider \"%s\" returned invalid JSON",
-						vault_keyring->keyring.provider_name),
-				 errdetail("No data attribute in Vault response.")));
-		goto cleanup;
-	}
-
-	if (!json_object_object_get_ex(data, "data", &data2))
-	{
-		*return_code = KEYRING_CODE_INVALID_RESPONSE;
-		ereport(throw_error ? ERROR : WARNING,
-				(errmsg("keyring provider \"%s\" returned invalid JSON",
-						vault_keyring->keyring.provider_name),
-				 errdetail("No data.data attribute in Vault response.")));
-		goto cleanup;
-	}
-
-	if (!json_object_object_get_ex(data2, "key", &keyO))
-	{
-		*return_code = KEYRING_CODE_INVALID_RESPONSE;
-		ereport(throw_error ? ERROR : WARNING,
-				(errmsg("keyring provider \"%s\" returned invalid JSON",
-						vault_keyring->keyring.provider_name),
-				 errdetail("No data.data.key attribute in Vault response.")));
-		goto cleanup;
-	}
-
-	response_key = json_object_get_string(keyO);
-	if (response_key == NULL || strlen(response_key) == 0)
-	{
-		*return_code = KEYRING_CODE_INVALID_RESPONSE;
-		ereport(throw_error ? ERROR : WARNING,
-				(errmsg("keyring provider \"%s\" returned invalid JSON",
-						vault_keyring->keyring.provider_name),
-				 errdetail("Key doesn't exist or empty.")));
+				(errmsg("HTTP(S) request to keyring provider \"%s\" returned incorrect JSON response",
+						vault_keyring->keyring.provider_name)));
 		goto cleanup;
 	}
+	PG_END_TRY();
 
 #if KEYRING_DEBUG
 	elog(DEBUG1, "Retrieved base64 key: %s", response_key);
 #endif
 
 	key = palloc(sizeof(keyInfo));
-	key->data.len = pg_b64_decode(response_key, strlen(response_key), (char *)key->data.data, MAX_KEY_DATA_SIZE);
+	key->data.len = pg_b64_decode(responseKey, strlen(responseKey), (char *)key->data.data, MAX_KEY_DATA_SIZE);
 
 	if (key->data.len > MAX_KEY_DATA_SIZE)
 	{
@@ -282,6 +248,5 @@ get_key_by_name(GenericKeyring *keyring, const char *key_name, bool throw_error,
 
 cleanup:
 	if(str.ptr != NULL) pfree(str.ptr);
-	if(response != NULL) json_object_put(response);
 	return key;
 }