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configure
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configure
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#!/bin/bash
#
# A (not so) simple configure script.
#
# Authors: Christian Holm Christensen and Fons Rademakers.
#
# To help with debugging the script, some comments are preprended with
# 3 '#' echo and 3 '%' - replace that pattern with echo and 3 '%' to
# get printouts. When done replace the pattern echo and 3 '%' with the
# original pattern of 3 '#' echo and 3 '%'. Emacs command M-C-% does
# this easily.
#
######################################################################
#
### echo %%% Some global variables
#
found_lib=no
found_dir=no
found_hdr=no
found_ext=
show_pkglist=no
fail_on_missing=no
noact="no"
nohowto="no"
logfile=config.log
altcc=
altcxx=
altf77=
altld=
altccset=
gcctoolchain=
usercflags=
usercxxflags=
host=
deprecated_options=" \
enable_mathcore \
enable_cern \
enable_editline \
enable_cintex \
enable_reflex \
enable_cxx11 \
"
options=" \
enable_afdsmgrd \
enable_afs \
enable_alien \
enable_alloc \
enable_asimage \
enable_astiff \
enable_bonjour \
enable_builtin_afterimage \
enable_builtin_ftgl \
enable_builtin_freetype \
enable_builtin_glew \
enable_builtin_pcre \
enable_builtin_zlib \
enable_builtin_lzma \
enable_builtin_llvm \
enable_cxx14 \
enable_libcxx \
enable_castor \
enable_chirp \
enable_cocoa \
enable_davix \
enable_dcache \
enable_explicitlink \
enable_fink \
enable_fftw3 \
enable_fitsio \
enable_gviz \
enable_gdml \
enable_genvector \
enable_geocad \
enable_gfal \
enable_glite \
enable_globus \
enable_gsl_shared \
enable_hdfs \
enable_http \
enable_krb5 \
enable_ldap \
enable_mathmore \
enable_memstat \
enable_minuit2 \
enable_monalisa \
enable_mysql \
enable_odbc \
enable_opengl \
enable_oracle \
enable_pgsql \
enable_pythia6 \
enable_pythia8 \
enable_python \
enable_qt \
enable_qtgsi \
enable_roofit \
enable_r \
enable_ruby \
enable_rfio \
enable_rpath \
enable_sapdb \
enable_shadowpw \
enable_shared \
enable_soversion \
enable_sqlite \
enable_srp \
enable_ssl \
enable_table \
enable_tmva \
enable_unuran \
enable_vc \
enable_vdt \
enable_werror \
enable_winrtdebug \
enable_x11 \
enable_xft \
enable_xml \
enable_xrootd \
"
ENABLEALL="no"
DEFAULTENABLE="yes"
for flag in "$@"; do
case $flag in
--all)
ENABLEALL="yes"
break ;;
--gminimal)
DEFAULTENABLE="no"
MINIMALENABLE="enable_x11"
break ;;
--minimal)
DEFAULTENABLE="no"
MINIMALENABLE=""
break ;;
esac
done
#
# This sets all options to "yes" unless --minimal is specified.
# We turn off those we don't want on per default explictly afterwards.
#
for c in $options $deprecated_options; do
case ${c} in
${MINIMALENABLE}) eval ${c}="yes" ;;
enable_shared) eval ${c}="yes" ;;
*) eval ${c}="${DEFAULTENABLE}" ;;
esac
done
for c in $options ; do eval ${c}_explicit="" ; done
enable_cxx11=yes
enable_cxx14=no
enable_libcxx=no
enable_cocoa=
enable_afs=no
enable_alloc=no
enable_gdml=no
enable_geocad=no
enable_globus=no
enable_explicitlink=no
enable_gsl_shared=no
enable_http=no
enable_qt=no
enable_qtgsi=no
enable_r=no
enable_roofit=no
enable_minuit2=no
enable_rpath=no
enable_ruby=no
enable_shadowpw=
enable_soversion=no
enable_table=no
enable_thread=yes # cannot be disabled (not in above options list)
enable_unuran=no
enable_vc=no
enable_werror=no
enable_winrtdebug=
enable_builtin_freetype=no
enable_builtin_ftgl=no
enable_builtin_glew=no
enable_builtin_pcre=no
enable_builtin_zlib=no
enable_builtin_lzma=no
enable_builtin_llvm=yes
enable_afdsmgrd=no
if test "x$ENABLEALL" = "xyes"; then
enable_gdml=yes
enable_geocad=yes
enable_http=yes
enable_qt=yes
enable_qtgsi=yes
enable_roofit=yes
enable_minuit2=yes
#enable_ruby=yes #not supported in ROOT v6.0.0 yet
enable_table=yes
enable_unuran=yes
enable_vc=yes
enable_vdt=yes
#enable_r=yes
fi
# Remove old log file
rm -f $logfile
#
# ./configure arguments and defaults set via supported env vars
#
envvars="
THREAD \
ZLIB \
LIBTIFF \
LIBJPEG \
LIBPNG \
LZMA \
OPENGL \
MYSQL \
ORACLE \
PGSQL \
SQLITE \
QTDIR \
SAPDB \
RFIO \
CASTOR \
GFAL \
GSL \
HDFS \
PYTHIA6 \
PYTHIA8 \
FFTW3 \
CFITSIO \
GVIZ \
PYTHONDIR \
DCACHE \
CHIRP \
DNSSD \
AVAHI \
ALIEN \
ASIMAGE \
LDAP \
GLOBUS_LOCATION \
GLITE \
MEMSTAT \
MONALISA \
SRP \
SSL \
AFS \
ROOFIT \
MINUIT2 \
TABLE \
XMLDIR \
CASROOT \
VC \
DAVIX \
"
configenvvars=
for c in $envvars ; do
cc=`eval echo "$"$c | sed 's,\\\,\\\\\\\,g'`
if test ! "x$cc" = "x" ; then
if test ! "x$configenvvars" = "x" ; then
configenvvars="$configenvvars $c=$cc"
else
configenvvars="$c=$cc"
fi
fi
done
configargs="$*"
# don't write --nohowto to config.h
configargs=`echo $configargs | sed 's, *--nohowto,,g'`
configoptions=
if test ! "x$configenvvars" = "x" ; then
configoptions=$configenvvars
fi
if test ! "x$configargs" = "x" ; then
if test ! "x$configoptions" = "x" ; then
configoptions="$configoptions $configargs"
else
configoptions=$configargs
fi
fi
configoptions=`echo $configoptions | sed 's,\\\,\\\\\\\,g'`
######################################################################
#
### echo %%% Some common functions
#
#_____________________________________________________________________
message() {
# Write a simple message to std out
if test $# -lt 1 ; then
echo "message: Too few arguments"
return 1
fi
echo $ac_n "$* ... $ac_c"
logmsg "$*"
}
#_____________________________________________________________________
logmsg() {
# Write a simple message to std out
if test $# -lt 1 ; then
echo "logmsg: Too few arguments"
return 1
fi
if test "x$1" = "x-n"; then
shift
echo -n "$*" >> $logfile
else
echo "$*" >> $logfile
fi
}
#_____________________________________________________________________
result() {
echo "$*"
logmsg "Result: $*"
}
#_____________________________________________________________________
checking_msg() {
# Write a simple "checking" message to std out.
if test $# -lt 1 ; then
echo "checking_msg: Too few arguments"
return 1
fi
echo $ac_n "Checking for$ac_c"
logmsg $ac_n "Checking for$ac_c"
while test $# -gt 1 ; do
echo $ac_n " $1,$ac_c"
logmsg $ac_n " $1,$ac_c"
shift
if test $# -eq 1 ; then
echo $ac_n " or$ac_c"
logmsg $ac_n " or$ac_c"
fi
done
echo $ac_n " $1 ... $ac_c"
logmsg " $1 ... "
}
#_____________________________________________________________________
check_libpic() {
# This function will try to find out if an archive library [$1]
# contains relocatable code. Currently works only for linux.
# The result of the check is stored in is_libpic, 1 if true,
# 0 otherwise, which should be immediately copied, since the variable
# will be overwritten at next invocation of this function.
is_libpic=1
# Assert that we got enough arguments
if test $# -ne 1 ; then
echo "check_libpic: not 1 argument"
return 1
fi
case $platform in
linux) ;;
*) return 0;
;;
esac
# Save arguments in logical names
chklibpic=$1
if [ "x`basename $chklibpic .a`" != "x`basename $chklibpic`" ]; then
# we have an archive .a file
logmsg "Checking if $chklibpic contains relocatable code"
logmsg " objdump -r $chklibpic | grep -v ' .debug_' | grep 'R_X86_64_32'"
objdump -r $chklibpic | grep -v ' .debug_' | grep 'R_X86_64_32' > /dev/null 2>& 1
ret=$?
logmsg " result: $ret"
if test $ret -eq 0 ; then
is_libpic=0
logmsg " is not a relocatable library"
fi
fi
}
#_____________________________________________________________________
check_libcompat() {
# This function will try to find out if a library [$1] contains
# compatible 64 bit or 32 bit code matching the selected architecture.
# Currently only MacOS X supports universal libs.
# The result of the check is stored in is_libcompat, 1 if true,
# 0 otherwise, which should be immediately copied, since the variable
# will be overwritten at next invocation of this function.
is_libcompat=0
is_libnotcompat=0
ret=0
# Assert that we got enough arguments
if test $# -ne 1 ; then
echo "check_libcompat: not 1 argument"
return 1
fi
# Save arguments in logical names
chklibcompat=$1
logmsg "Checking if $chklibcompat contains compatible code"
case $arch in
macosx)
logmsg " lipo $chklibcompat -verify_arch i386"
if lipo $chklibcompat -verify_arch i386 ; then
ret=1
fi
;;
macosx64)
logmsg " lipo $chklibcompat -verify_arch x86_64"
if lipo $chklibcompat -verify_arch x86_64 ; then
ret=1
fi
;;
esac
logmsg " result: $ret"
if test $ret -eq 1 ; then
is_libcompat=1
logmsg " is a compatible library"
else
is_libnotcompat=1
logmsg " is a not-compatible library"
fi
}
#_____________________________________________________________________
check_libcxxcompat() {
# This function will try to find out if a library [$1] is linked
# against a compatible C++ run-time library (either libstdc++ or libc++).
# Currently only MacOS X and Linux support libc++ and libstdc++.
# The result of the check is stored in is_libcxxcompat, 1 if true,
# 0 otherwise, which should be immediately copied, since the variable
# will be overwritten at next invocation of this function.
# To skip this check, in case std types are not used in the public
# API of the library, set skipchecklibcxxcompat="yes".
is_libcxxcompat=1
ret=0
# Assert that we got enough arguments
if test $# -ne 1 ; then
echo "check_libcxxcompat: not 1 argument"
return 1
fi
# Can we skip the check in case library has no std C++ in public API
if test "x$skipchecklibcxxcompat" = "xyes"; then
skipchecklibcxxcompat=""
logmsg "check_libcxxcompat: skipping check for $1"
return
fi
# Save arguments in logical names
chklibcxxcompat=$1
logmsg "Checking if $chklibcxxcompat is linked against compatible C++ run-time"
if test "x$enable_libcxx" = "xyes"; then
case $arch in
macosx*)
logmsg " otool -L $chklibcxxcompat | grep libstdc++"
if otool -L $chklibcxxcompat | grep 'libstdc++' > /dev/null 2>& 1 ; then
ret=1
fi
;;
linux*)
logmsg " ldd $chklibcxxcompat | grep libstdc++"
if ldd $chklibcxxcompat | grep 'libstdc++' > /dev/null 2>& 1 ; then
ret=1
fi
;;
esac
else
case $arch in
macosx*)
logmsg " otool -L $chklibcxxcompat | grep libc++"
if otool -L $chklibcxxcompat | grep 'libc++' > /dev/null 2>& 1 ; then
ret=1
fi
;;
linux*)
logmsg " ldd $chklibcxxcompat | grep libc++"
if ldd $chklibcxxcompat | grep 'libc++' > /dev/null 2>& 1 ; then
ret=1
fi
;;
esac
fi
logmsg " result: $ret"
if test $ret -eq 1 ; then
is_libcxxcompat=0
logmsg " is linked against not-compatible C++ run-time library"
else
logmsg " is linked against compatible C++ run-time library"
fi
}
#_____________________________________________________________________
check_lib64() {
# This function will try to find out if a library [$1] contains 64 bit
# or 32 bit code. Currently works only for linux and solaris.
# The result of the check is stored in is_lib64, 1 if true,
# 0 otherwise, which should be immediately copied, since the variable
# will be overwritten at next invocation of this function.
is_lib64=0
ret=0
# Assert that we got enough arguments
if test $# -ne 1 ; then
echo "check_lib64: not 1 argument"
return 1
fi
filearg=
case $platform in
linux) filearg="-L" ;;
solaris) ;;
*) return 1;;
esac
# Save arguments in logical names
chklib64=$1
logmsg "Checking if $chklib64 is a 64-bit library"
if [ "x`basename $chklib64 .a`" != "x`basename $chklib64`" ]; then
# we have an archive .a file
if [ "x$platform" = "xlinux" ]; then
logmsg " objdump -a $chklib64 | grep 'x86-64'"
if objdump -a $chklib64 | grep 'x86-64' > /dev/null 2>& 1 ; then
ret=1
fi
fi
if [ "x$platform" = "xsolaris" ]; then
chklib64file=`ar t $chklib64 | awk '{if (NR == 2) print $1}'`
logmsg " ar x $chklib64 $chklib64file"
ar x $chklib64 $chklib64file
logmsg " file $filearg $chklib64file | grep '64-bit'"
if file $filearg $chklib64file | grep '64-bit' > /dev/null 2>& 1 ; then
ret=1
fi
rm -f $chklib64file
fi
else
if file $filearg $chklib64 | grep 'ASCII' > /dev/null 2>& 1 ; then
check_link $chklib64
ret=$link_result
else
logmsg " file $filearg $chklib64 | grep '64-bit'"
if file $filearg $chklib64 | grep '64-bit' > /dev/null 2>& 1 ; then
ret=1
fi
fi
fi
logmsg " result: $ret"
if test $ret -eq 1 ; then
is_lib64=1
logmsg " is a 64bit library"
fi
}
#_____________________________________________________________________
check_library() {
# This function will try to locate a library [$1] in the specific
# directory [$3] or in a default path [$*]. If the second argument
# [$2] is not "no" or "staticonly", then shared libraries are favoured.
# The result of the search is stored in found_lib and found_dir,
# which should be immediately copied, since the variables value will
# be overwritten at next invocation of this function.
# Assert that we got enough arguments
if test $# -lt 4 ; then
echo "check_library: Too few arguments"
return 1
fi
# Save arguments in local names
lib=$1 ; shift
shared=$1 ; shift
libdirl=$1 ; shift
libdirs="$*"
if test ! "x$iossdk" = "x" ; then
sdklibs=""
for i in $libdirs; do
#if test $i = "/usr/lib"; then
sdklibs="$sdklibs ${iossdk}${i}"
#else
# sdklibs="$sdklibs $i"
#fi
done
libdirs="$sdklibs"
fi
# Write a message
checking_msg $lib
# check if we got a specific argument as to where the library
# is to be found
if test ! "x$libdirl" = "x" ; then
libdirs=$libdirl
fi
found_lib=no
found_dir=no
found_ext=
# Make list of libraries to search for. The .lib extension is for
# Windoze - note $shared is always "no" on windoze, since we need
# the .lib export library to link.
libs=""
for i in $lib ; do
for ext in .a .lib "" ; do # lib without extension for MacOS X
libs="$libs $i$ext"
done
done
slibs=""
for i in $lib ; do
for ext in .so .sl .dylib .dll.a ; do # .dll.a for cygwin gcc
slibs="$slibs $i$ext"
done
done
if test "x$shared" = "xno" ; then
libs="$libs $slibs"
elif test "x$shared" = "xstaticonly" ; then
libs="$libs"
else
libs="$slibs $libs"
fi
logmsg "libraries to check for: $libs"
# Loop over the list of possible directories, and see if we can
# find any of the library files as determind above.
for i in $libdirs ; do
# look first in the lib32 directories
if test "x$checklib32" = "xyes" ; then
i32=`echo $i | sed -e 's|lib$|lib32|' -e 's|lib/|lib32/|'`
#i="$i32 $i"
i="$i32"
fi
# look first in the lib64 directories
if test "x$checklinux64" = "xyes" ; then
i64=`echo $i | sed -e 's|lib$|lib64|' -e 's|lib/|lib64/|'`
i="$i64 $i"
fi
# look first in the DEB_HOST_MULTIARCH directories
if test "x$debmultiarch" != "x" ; then
i64=`echo $i | sed "s|\(lib\)$|\1/$debmultiarch|"`
i="$i64 $i"
fi
# look only in the lib64 directories
if test "x$checkonlylib64" = "xyes" ; then
i64=`echo $i | sed -e 's|lib$|lib64|' -e 's|lib/|lib64/|'`
i="$i64"
fi
# look only in the hpux64 directories
if test "x$checkhpux64" = "xyes" ; then
i64=`echo $i | sed 's|\(lib\)|\1/hpux64|'`
i="$i64"
fi
# look first in the amd64 directories
if test "x$checksolaris64" = "xyes" ; then
i64=`echo $i | sed 's|\(lib\)|\1/amd64|'`
i="$i64 $i"
fi
logmsg " Checking in directories $i for $libs"
for l in $i ; do
l=`echo $l | sed 's,^//,/,'`
if test ! -d $l ; then
continue
fi
for j in ${libs} ; do
logmsg " Checking for library $j in directory $l"
# if we found the file (it's readable by user), we set the
# logical variables and are on our way, otherwise we continue
liblist=`echo $l/$j` # expands wildcard in $l/$j
for n in ${liblist} ; do
logmsg " Checking $n"
if test -f $n ; then
logmsg " Found file $n"
if test "x$checklib64" = "xyes" ; then
check_lib64 $n
if test $is_lib64 -eq 1 ; then
found_dir=$l
found_lib=$j
break 4
fi
else
if test "x$checklibcompat" = "xyes" ; then
check_libcompat $n
if test $is_libcompat -eq 0 ; then
break 4
fi
fi
if test "x$checklibcxxcompat" = "xyes" ; then
check_libcxxcompat $n
if test $is_libcxxcompat -eq 0 ; then
break 4
fi
fi
found_dir=$l
found_lib=$j
if test "x$arch" = "xlinux"; then
check_lib64 $n
else
is_lib64=0
fi
if test $is_lib64 -eq 1 ; then
found_dir=no
found_lib=no
else
# skip cygwin libraries when in pure Win32 mode
if test "x$platform" = "xwin32"; then
case $found_dir in
/lib|/lib/*|/usr/*) found_dir=no ;;
*) break 4;;
esac
else
break 4
fi
fi
fi
else
logmsg " $j not found in $l"
fi
done
done
done
done
echo $found_dir
unset libs
unset libdirs
if test "x$found_dir" = "xno" || test "x$found_lib" = "xno" ; then
found_dir=""
found_lib=""
found_raw_lib=""
logmsg " library not found"
else
found_ext=`echo $found_lib | sed 's|^lib\(.*\)\.\(.*\)|\2|'`
flib=""
maclib=""
for i in $lib ; do
for ext in .a .lib "" ; do # lib without extension for MacOS X
if test "x$found_lib" = "x$i$ext" ; then
flib=$i$ext
if test "x$ext" = "x" ; then
maclib="yes"
fi
break 2
fi
done
done
if (test "x$found_lib" = "x$flib" && test "x$shared" = "xno") || \
test "x$maclib" = "xyes" ; then
found_raw_lib=${found_lib}
found_lib=${found_dir}/${found_lib}
found_raw_dir=${found_dir}
found_dir=""
else
found_raw_lib=${found_lib}
if test ! "x$shared" = "xstaticonly" ; then
found_lib=`echo $found_lib | sed 's|^lib\(.*\)\..*|-l\1|'`
fi
found_raw_dir=${found_dir}
if test ! "x$shared" = "xstaticonly" ; then
found_dir=-L${found_dir}
fi
# Avoid inclusion of /usr/lib, which is always included anyway
if test "x$found_dir" = "x-L/usr/lib" || \
test "x$found_dir" = "x-L/usr/lib32" || \
test "x$found_dir" = "x-L/usr/lib64" ; then
found_dir=""
fi
if test "x$debmultiarch" != "x" ; then
if test "x$found_dir" = "x-L/usr/lib/$debmultiarch" ; then
found_dir=""
fi
fi
if test "x$checksolaris64" = "xyes" ; then
if test "x$found_dir" = "x-L/usr/lib/amd64" || \
test "x$found_dir" = "x-L/usr/lib/64" ; then
found_dir=""
fi
fi
if test "x$checkhpux64" = "xyes" ; then
if test "x$found_dir" = "x-L/usr/lib/hpux64" ; then
found_dir=""
fi
fi
fi
# Correct path for win32
if test "x$platform" = "xwin32"; then
if test ! "x$found_lib" = "x" ; then
found_lib=`cygpath -m $found_lib`
fi
if test ! "x$found_dir" = "x" ; then
found_dir=`cygpath -m $found_dir`
fi
fi
fi
unset shared
unset slibs
unset lib
unset flib
unset maclib
unset libdirl
}
#_____________________________________________________________________
check_header() {
# This function will try to locate a header [$1] in the specific
# directory [$2] or in a default path [$*].
# The result of the search is stored in found_hdr and found_dir,
# which should be immediately copied, since the variables value will
# be overwritten at next invocation of this function.
# Assert that we got enough arguments
if test $# -lt 3 ; then
echo "check_header: Too few arguments"
return 1
fi
# Save arguments in logical names
hdrs=$1 ; shift
hdrdir=$1 ; shift
hdrdirs="$*"
if test ! "x$iossdk" = "x" ; then
sdkhdrs=""
for i in $hdrdirs; do
#if test $i = "/usr/include"; then
sdkhdrs="$sdkhdrs ${iossdk}${i}"
#else
# sdkhdrs="$sdkhdrs $i"
#fi
done
hdrdirs="$sdkhdrs"
fi
# Write a message
checking_msg $hdrs
# Check if we got a specific argument as to where the library
# is to be found
if test ! "x$hdrdir" = "x" ; then
hdrdirs=$hdrdir
fi
found_hdr=no
found_dir=no
# Loop over the list of possible directories, and see if we can
# find any of the library files as determind above.
for i in $hdrdirs; do
logmsg " Checking in directory $i"
for j in ${hdrs} ; do
logmsg " Checking for $j in directory $i"
# if we found the file (it's readable by user), we set the
# logical variables and are on our way, otherwise we continue
if test -r $i/$j ; then
logmsg " $i/$j is read-able"
found_dir=$i
found_hdr=$j
# skip cygwin headers when in pure Win32 mode
if test "x$platform" = "xwin32"; then
case $found_dir in
/usr/*) found_dir="no" ;;
*) break 2;;
esac
else
break 2
fi
fi
done
done
echo $found_dir
if test "x$found_hdr" = "xno" || test "x$found_dir" = "xno" ; then
found_hdr=""
found_dir=""
fi
# Avoid inclusion of /usr/include, which is always included anyway
#if test "x$found_dir" = "x/usr/include" ; then
# found_dir="include"
#fi
# Correct path for win32
if test "x$platform" = "xwin32"; then
if test ! "x$found_hdr" = "x" ; then
found_hdr=`cygpath -m $found_hdr`
fi
if test ! "x$found_dir" = "x" ; then
found_dir=`cygpath -m $found_dir`
fi
fi
unset hdrs
unset hdrdirs
unset hdrdir
}
#_____________________________________________________________________
check_code() {
# This function compiles a source file containing code from $1
# with extra CXXFLAGS $2 (can be empty), e.g. to pass -I.
# The result of the check is stored in include_result, 1 if true,
# 0 otherwise, which should be immediately copied, since the variable
# will be overwritten at next invocation of this function.
# Assert that we got enough arguments
if test $# -lt 1 ; then
echo "check_include: Too few arguments"
return 1
fi
logmsg " Compiling $1 with flags '$2'"
echo "$1" > conftest.cxx
cat <<EOF > conftest.mk
include ${ac_srcdir}/config/Makefile.${arch}
CXX = ${altcxx}
conftest.o: conftest.cxx
\$(CXX) $2 -c \$^ -o \$@
EOF
$gnumake -f conftest.mk >> $logfile 2>&1
if test $? -eq 0 ; then
logmsg " supported"
include_result=1
else
logmsg " not supported"
include_result=0
fi
rm -f conftest.mk conftest.o conftest.cxx conftest.d
}
#_____________________________________________________________________
check_link() {
# This function will try to link a specific library [$1] in an
# optional directory [$2] and test, optionally, for a specified
# symbol [$3].
# The result of the check is stored in link_result, 1 if true,
# 0 otherwise, which should be immediately copied, since the variable
# will be overwritten at next invocation of this function.
# Assert that we got enough arguments
if test $# -lt 1 ; then
echo "check_link: need at least one argument"
link_result=0
return 1
fi
# save arguments in logical names
linklib="$1"; shift
linkdir=""
if test $# -ge 1 ; then
linkdir="$1"; shift
fi
linksymbol=""
if test $# -ge 1 ; then
linksymbol="$1"
fi
if test "x$linksymbol" = "x" ; then
if test "x$linkdir" = "x" ; then
logmsg " trying to link against $linklib"
else
logmsg " trying to link against $linkdir $linklib"
fi
cat <<EOF > conftest.mk
include ${ac_srcdir}/config/Makefile.${arch}
CC = ${altcc}
CXX = ${altcxx}
LD = ${altld}
conftest: conftest.c
\$(CC) \$(CFLAGS) \$(LDFLAGS) \$< -o \$@ $linkdir $linklib
conftest.c:
echo "int main() { return 0; }" > \$@
EOF
else
if test "x$linkdir" = "x" ; then
logmsg " trying to resolve symbol $linksymbol in $linklib"
else
logmsg " trying to resolve symbol $linksymbol in $linkdir $linklib"
fi
cat <<EOF > conftest.mk
include ${ac_srcdir}/config/Makefile.${arch}
CC = ${altcc}
CXX = ${altcxx}
LD = ${altld}
conftest:conftest.c