v0.9.1 release

Readme.md

@@ -1,6 +1,10 @@
 # Rust SGX SDK
 Rust SGX SDK helps developers write Intel SGX applications in Rust programming language.
 
+## v0.9.1 Release
+This version supports the recently released [Intel SGX SDK 2.0](https://download.01.org/intel-sgx/linux-2.0/), and provides the most popular machine learning library [rusty-machine](https://github.com/AtheMathmo/rusty-machine/) in Intel SGX! Please refer to [release_notes](https://github.com/baidu/rust-sgx-sdk/blob/master/release_notes.md) for further details.
+
+
 ## v0.9.0 Release
 Almost there! Rust SGX SDK v0.9.0 is coming up as a beta version of the future v1.0.0, with the most desired `sgx::tstd` as well as many new features! Also we added support for programming SGX untrusted part in Rust using `sgx::urts`. Now it's easy to port Rust crates to the SGX trust execution environment and write the whole SGX application in Rust! Please refer to [release_notes](https://github.com/baidu/rust-sgx-sdk/blob/master/release_notes.md) for further details.
 
@@ -90,15 +94,17 @@ is shipped in this sample and Makefiles are modified accordingly.
 * `hugemem` sample shows how to use huge mem in SGX enclave. In this
 sample, we allocate reserve 31.75GB heap space and allocate 31.625GB buffers!
 
-* New! `file` sample shows how to read/write files in SGX enclave.
+* `file` sample shows how to read/write files in SGX enclave.
+
+* `hello-rust` is the helloworld sample writtin in pure Rust.
 
-* New! `hello-rust` is the helloworld sample writtin in pure Rust.
+* `backtrace` is a sample showing how to enabling backtrace mechanism inside the enclave.
 
-* New! `backtrace` is a sample showing how to enabling backtrace mechanism inside the enclave.
+* `unit-test` shows the way of writing unit tests and conduct unit testing.
 
-* New! `unit-test` shows the way of writing unit tests and conduct unit testing.
+* `zlib-lazy-static-sample` shows how to use ported third party crates inside enclave.
 
-* New! `zlib-lazy-static-sample` shows how to use ported third party crates inside enclave.
+* New! `machine-learning` shows how to use [rusty-machine](https://github.com/AtheMathmo/rusty-machine) for machine learning inside Intel SGX enclave.
 
 # Samples of ported third-party libraries
 

build_helper/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "build_helper"
-version = "0.9.0"
+version = "0.9.1"
 authors = ["baidu"]
 
 [lib]

dockerfile/Dockerfile

@@ -36,15 +36,15 @@ RUN apt-get update
 RUN apt-get install -y build-essential ocaml automake autoconf libtool wget python libssl-dev libcurl4-openssl-dev protobuf-compiler libprotobuf-dev sudo kmod vim curl git-core libprotobuf-c0-dev libboost-thread-dev libboost-system-dev liblog4cpp5-dev libjsoncpp-dev
 
 RUN mkdir /root/sgx
-RUN wget -O /root/sgx/optimized_libs-1.9.100.39124.tar https://download.01.org/intel-sgx/linux-1.9/optimized_libs-1.9.100.39124.tar
-RUN wget -O /root/sgx/prebuilt-ae-1.9.100.39124.tar  https://download.01.org/intel-sgx/linux-1.9/prebuilt-ae-1.9.100.39124.tar
-RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin https://download.01.org/intel-sgx/linux-1.9/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin
-RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin https://download.01.org/intel-sgx/linux-1.9/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin
+#RUN wget -O /root/sgx/optimized_libs-1.9.100.39124.tar https://download.01.org/intel-sgx/linux-1.9/optimized_libs-1.9.100.39124.tar
+#RUN wget -O /root/sgx/prebuilt-ae-1.9.100.39124.tar  https://download.01.org/intel-sgx/linux-1.9/prebuilt-ae-1.9.100.39124.tar
+RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin https://download.01.org/intel-sgx/linux-2.0/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin
+RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin https://download.01.org/intel-sgx/linux-2.0/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin
 
-RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin
-RUN /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin
-RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin
-RUN echo -e 'no\n/opt' | /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin
+RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin
+RUN /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin
+RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin
+RUN echo -e 'no\n/opt' | /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin
 RUN echo 'source /opt/sgxsdk/environment' >> /root/.bashrc
 
 RUN git clone https://github.com/01org/linux-sgx.git /root/linux-sgx
@@ -56,14 +56,16 @@ RUN cp /root/linux-sgx/build/linux/libsgx_tstdc.a /opt/sgxsdk/lib64/libsgx_tstdc
 
 RUN wget 'https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init' -O /root/rustup-init
 RUN chmod +x /root/rustup-init
-RUN echo '1' | /root/rustup-init --default-toolchain nightly-2017-09-29
+RUN echo '1' | /root/rustup-init --default-toolchain nightly-2017-11-29
 RUN echo 'source /root/.cargo/env' >> /root/.bashrc
 
 # A hack of linking Rust's libc (https://github.com/rust-lang/libc) in no_std environment.
-RUN rm /root/.rustup/toolchains/nightly-2017-09-29-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-058430ec2dd28527.rlib
+RUN rm /root/.rustup/toolchains/nightly-2017-11-29-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-7f54f8f6cd32e0c8.rlib
 
 # Remove useless .h file in intel sgx sdk, which always cause linking problem.
-RUN ar d /opt/sgxsdk/lib64/libsgx_uprotected_fs.a sgx_tprotected_fs_u.h
-RUN ar d /opt/sgxsdk/lib64/libsgx_tprotected_fs.a sgx_tprotected_fs_t.h
+# Needed no more. Intel has merged the corresponding patch.
+# https://github.com/01org/linux-sgx/pull/173
+# RUN ar d /opt/sgxsdk/lib64/libsgx_uprotected_fs.a sgx_tprotected_fs_u.h
+# RUN ar d /opt/sgxsdk/lib64/libsgx_tprotected_fs.a sgx_tprotected_fs_t.h
 
 WORKDIR /root

dockerfile/experimental/Dockerfile

@@ -41,10 +41,10 @@ RUN mkdir /root/sgx
 WORKDIR /root/sgx
 
 # Download essential files
-RUN wget -O /root/sgx/optimized_libs-1.9.100.39124.tar https://download.01.org/intel-sgx/linux-1.9/optimized_libs-1.9.100.39124.tar
-RUN wget -O /root/sgx/prebuilt-ae-1.9.100.39124.tar  https://download.01.org/intel-sgx/linux-1.9/prebuilt-ae-1.9.100.39124.tar
-RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin https://download.01.org/intel-sgx/linux-1.9/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin
-RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin https://download.01.org/intel-sgx/linux-1.9/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin
+#RUN wget -O /root/sgx/optimized_libs-2.0.100.40950.tar https://download.01.org/intel-sgx/linux-1.9/optimized_libs-2.0.100.40950.tar
+#RUN wget -O /root/sgx/prebuilt-ae-2.0.100.40950.tar  https://download.01.org/intel-sgx/linux-1.9/prebuilt-ae-2.0.100.40950.tar
+RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin https://download.01.org/intel-sgx/linux-2.0/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin
+RUN wget -O /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin https://download.01.org/intel-sgx/linux-2.0/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin
 
 # Setup protobuf v3.4.1
 RUN wget -O /root/sgx/v3.4.1.tar.gz https://github.com/google/protobuf/archive/v3.4.1.tar.gz
@@ -60,22 +60,22 @@ WORKDIR /root/sgx
 #RUN echo "/usr/local/lib" > /etc/ld.so.conf.d/boost.conf && ldconfig
 #WORKDIR /root/sgx
 
-RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin
-RUN /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_1.9.100.39124.bin
-RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin
-RUN echo -e 'no\n/opt' | /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_1.9.100.39124.bin
+RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin
+RUN /root/sgx/sgx_linux_ubuntu16.04.1_x64_psw_2.0.100.40950.bin
+RUN chmod a+x /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin
+RUN echo -e 'no\n/opt' | /root/sgx/sgx_linux_ubuntu16.04.1_x64_sdk_2.0.100.40950.bin
 RUN echo 'source /opt/sgxsdk/environment' >> /root/.bashrc
 
-RUN wget -O /root/sgx/sgx_1.9.tar.gz https://github.com/01org/linux-sgx/archive/sgx_1.9.tar.gz
-RUN tar xzf sgx_1.9.tar.gz
+RUN wget -O /root/sgx/sgx_2.0.tar.gz https://github.com/01org/linux-sgx/archive/sgx_2.0.tar.gz
+RUN tar xzf sgx_2.0.tar.gz
 ADD all.patch /root/sgx
 RUN patch -t -p0 < all.patch
-WORKDIR linux-sgx-sgx_1.9
-RUN /root/sgx/linux-sgx-sgx_1.9/download_prebuilt.sh
+WORKDIR linux-sgx-sgx_2.0
+RUN /root/sgx/linux-sgx-sgx_2.0/download_prebuilt.sh
 RUN make -j8
-RUN cp /root/sgx/linux-sgx-sgx_1.9/build/linux/libsgx_tstdc.a /opt/sgxsdk/lib64/libsgx_tstdc.a
-RUN cp /root/sgx/linux-sgx-sgx_1.9/build/linux/aesm_service /opt/intel/sgxpsw/aesm/aesm_service
-RUN cp /root/sgx/linux-sgx-sgx_1.9/build/linux/libsgx_uae_service.so /usr/lib/libsgx_uae_service.so
+RUN cp /root/sgx/linux-sgx-sgx_2.0/build/linux/libsgx_tstdc.a /opt/sgxsdk/lib64/libsgx_tstdc.a
+RUN cp /root/sgx/linux-sgx-sgx_2.0/build/linux/aesm_service /opt/intel/sgxpsw/aesm/aesm_service
+RUN cp /root/sgx/linux-sgx-sgx_2.0/build/linux/libsgx_uae_service.so /usr/lib/libsgx_uae_service.so
 RUN apt-get autoclean && apt-get autoremove && rm -rf /var/cache/apt/archives/*
 #RUN git clone https://github.com/01org/linux-sgx.git /root/linux-sgx
 #ADD patch /root/
@@ -86,14 +86,14 @@ RUN apt-get autoclean && apt-get autoremove && rm -rf /var/cache/apt/archives/*
 
 RUN wget 'https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init' -O /root/rustup-init
 RUN chmod +x /root/rustup-init
-RUN echo '1' | /root/rustup-init --default-toolchain nightly-2017-09-29
+RUN echo '1' | /root/rustup-init --default-toolchain nightly-2017-11-29
 RUN echo 'source /root/.cargo/env' >> /root/.bashrc
 
 # Remove useless .h file in intel sgx sdk, which always cause linking problem.
-RUN ar d /opt/sgxsdk/lib64/libsgx_uprotected_fs.a sgx_tprotected_fs_u.h
-RUN ar d /opt/sgxsdk/lib64/libsgx_tprotected_fs.a sgx_tprotected_fs_t.h
+# RUN ar d /opt/sgxsdk/lib64/libsgx_uprotected_fs.a sgx_tprotected_fs_u.h
+# RUN ar d /opt/sgxsdk/lib64/libsgx_tprotected_fs.a sgx_tprotected_fs_t.h
 
 ## A hack of linking Rust's libc (https://github.com/rust-lang/libc) in no_std environment.
-RUN rm /root/.rustup/toolchains/nightly-2017-09-29-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-058430ec2dd28527.rlib
+RUN rm /root/.rustup/toolchains/nightly-2017-11-29-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-7f54f8f6cd32e0c8.rlib
 
 WORKDIR /root

dockerfile/experimental/all.patch

@@ -1,9 +1,9 @@
-diff -ur linux-sgx-sgx_1.9-orig/buildenv.mk linux-sgx-sgx_1.9/buildenv.mk
---- linux-sgx-sgx_1.9-orig/buildenv.mk	2017-09-26 11:18:44.117249066 -0700
-+++ linux-sgx-sgx_1.9/buildenv.mk	2017-09-26 11:22:00.870339246 -0700
+diff -ur linux-sgx-sgx_2.0-orig/buildenv.mk linux-sgx-sgx_2.0/buildenv.mk
+--- linux-sgx-sgx_2.0-orig/buildenv.mk	2017-09-26 11:18:44.117249066 -0700
++++ linux-sgx-sgx_2.0/buildenv.mk	2017-09-26 11:22:00.870339246 -0700
 @@ -88,7 +88,7 @@
  COMMON_FLAGS += -ffunction-sections -fdata-sections
- 
+
  # turn on compiler warnings as much as possible
 -COMMON_FLAGS += -Wall -Wextra -Winit-self -Wpointer-arith -Wreturn-type \
 +COMMON_FLAGS += -Wextra -Winit-self -Wpointer-arith -Wreturn-type \
@@ -13,23 +13,23 @@ diff -ur linux-sgx-sgx_1.9-orig/buildenv.mk linux-sgx-sgx_1.9/buildenv.mk
 @@ -102,6 +102,10 @@
  # for static_assert()
  CXXFLAGS += -std=c++0x
- 
+
 +# for protobuf v3
 +CFLAGS += -DPROTOBUF_INLINE_NOT_IN_HEADERS=0
 +CXXFLAGS += -DPROTOBUF_INLINE_NOT_IN_HEADERS=0
 +
  .DEFAULT_GOAL := all
  # this turns off the RCS / SCCS implicit rules of GNU Make
  % : RCS/%,v
-diff -ur linux-sgx-sgx_1.9-orig/sdk/tlibc/Makefile linux-sgx-sgx_1.9/sdk/tlibc/Makefile
---- linux-sgx-sgx_1.9-orig/sdk/tlibc/Makefile	2017-09-26 11:18:44.165250295 -0700
-+++ linux-sgx-sgx_1.9/sdk/tlibc/Makefile	2017-09-26 11:19:20.634187863 -0700
+diff -ur linux-sgx-sgx_2.0-orig/sdk/tlibc/Makefile linux-sgx-sgx_2.0/sdk/tlibc/Makefile
+--- linux-sgx-sgx_2.0-orig/sdk/tlibc/Makefile	2017-09-26 11:18:44.165250295 -0700
++++ linux-sgx-sgx_2.0/sdk/tlibc/Makefile	2017-09-26 11:19:20.634187863 -0700
 @@ -33,7 +33,7 @@
- 
+
  CFLAGS   += $(ENCLAVE_CFLAGS)
  ASFLAGS  := $(CFLAGS)
 -CFLAGS   += -std=c99
 +CFLAGS   += -std=c99 -D USE_MALLOC_DEPRECATED
  CXXFLAGS += $(ENCLAVE_CXXFLAGS) -fno-exceptions -fno-rtti
- 
+
  CPPFLAGS += -I.                          \

edl/sgx_backtrace.edl

@@ -28,17 +28,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
- 
+
 enclave {
 	trusted {
         /* define ECALLs here. */
     };
 
-    untrusted { 
+    untrusted {
         int u_backtrace_open_ocall([out]int *error, [in, string]const char *pathname, int flags);
     	int u_backtrace_close_ocall([out]int *error, int fd);
     	int u_backtrace_fcntl_ocall([out]int *error, int fd, int cmd, int arg);
-    	
+
     	void * u_backtrace_mmap_ocall([out]int *error, [user_check]void *start, size_t length, int prot, int flags, int fd, int64_t offset);
     	int u_backtrace_munmap_ocall([out]int *error, [user_check]void *start, size_t length);
     };

edl/sgx_stdio.edl

@@ -28,14 +28,14 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
- 
+
 enclave {
-    
+
 	trusted {
         /* define ECALLs here. */
     };
 
-    untrusted { 
+    untrusted {
         size_t u_stdin_ocall([out, size=nbytes] void *buf, size_t nbytes);
         size_t u_stdout_ocall([in, size=nbytes] const void *buf, size_t nbytes);
         size_t u_stderr_ocall([in, size=nbytes] const void *buf, size_t nbytes);

edl/sgx_tstd.edl

@@ -28,15 +28,15 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
- 
+
 enclave {
 	trusted {
         /* define ECALLs here. */
         public void t_global_init_ecall(uint64_t id, [in, size=len] const uint8_t * path, size_t len);
         public void t_global_exit_ecall();
     };
 
-    untrusted { 
+    untrusted {
 
     };
 };

libbacktrace/ChangeLog

@@ -582,7 +582,7 @@
 2012-09-17  Ian Lance Taylor  <[email protected]>
 
 	* Initial implementation.
-
+
 Copyright (C) 2012-2016 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,

libbacktrace/ChangeLog.jit

@@ -6,7 +6,7 @@
 
 	* configure.ac: Add --enable-host-shared.
 	* configure: Regenerate.
-
+
 Copyright (C) 2013-2014 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,

libbacktrace/Makefile.am

@@ -6,12 +6,12 @@
 # met:
 
 #     (1) Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer. 
+#     notice, this list of conditions and the following disclaimer.
 
 #     (2) Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in
 #     the documentation and/or other materials provided with the
-#     distribution.  
+#     distribution.
 
 #     (3) The name of the author may not be used to
 #     endorse or promote products derived from this software without

libbacktrace/Makefile.in

@@ -23,12 +23,12 @@
 # met:
 
 #     (1) Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer. 
+#     notice, this list of conditions and the following disclaimer.
 
 #     (2) Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in
 #     the documentation and/or other materials provided with the
-#     distribution.  
+#     distribution.
 
 #     (3) The name of the author may not be used to
 #     endorse or promote products derived from this software without
@@ -137,10 +137,10 @@ LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 	$(LDFLAGS) -o $@
 SOURCES = $(libbacktrace_la_SOURCES) $(EXTRA_libbacktrace_la_SOURCES) \
 	$(btest_SOURCES) $(stest_SOURCES)
-MULTISRCTOP = 
-MULTIBUILDTOP = 
-MULTIDIRS = 
-MULTISUBDIR = 
+MULTISRCTOP =
+MULTIBUILDTOP =
+MULTIDIRS =
+MULTISUBDIR =
 MULTIDO = true
 MULTICLEAN = true
 am__can_run_installinfo = \
@@ -390,7 +390,7 @@ config.h: stamp-h1
 stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
 	@rm -f stamp-h1
 	cd $(top_builddir) && $(SHELL) ./config.status config.h
-$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) 
+$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 	($(am__cd) $(top_srcdir) && $(AUTOHEADER))
 	rm -f stamp-h1
 	touch $@
@@ -408,7 +408,7 @@ clean-noinstLTLIBRARIES:
 	  echo "rm -f \"$${dir}/so_locations\""; \
 	  rm -f "$${dir}/so_locations"; \
 	done
-libbacktrace.la: $(libbacktrace_la_OBJECTS) $(libbacktrace_la_DEPENDENCIES) $(EXTRA_libbacktrace_la_DEPENDENCIES) 
+libbacktrace.la: $(libbacktrace_la_OBJECTS) $(libbacktrace_la_DEPENDENCIES) $(EXTRA_libbacktrace_la_DEPENDENCIES)
 	$(LINK)  $(libbacktrace_la_OBJECTS) $(libbacktrace_la_LIBADD) $(LIBS)
 
 clean-checkPROGRAMS:
@@ -419,10 +419,10 @@ clean-checkPROGRAMS:
 	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
 	echo " rm -f" $$list; \
 	rm -f $$list
-btest$(EXEEXT): $(btest_OBJECTS) $(btest_DEPENDENCIES) $(EXTRA_btest_DEPENDENCIES) 
+btest$(EXEEXT): $(btest_OBJECTS) $(btest_DEPENDENCIES) $(EXTRA_btest_DEPENDENCIES)
 	@rm -f btest$(EXEEXT)
 	$(btest_LINK) $(btest_OBJECTS) $(btest_LDADD) $(LIBS)
-stest$(EXEEXT): $(stest_OBJECTS) $(stest_DEPENDENCIES) $(EXTRA_stest_DEPENDENCIES) 
+stest$(EXEEXT): $(stest_OBJECTS) $(stest_DEPENDENCIES) $(EXTRA_stest_DEPENDENCIES)
 	@rm -f stest$(EXEEXT)
 	$(LINK) $(stest_OBJECTS) $(stest_LDADD) $(LIBS)
 

libbacktrace/backtrace-supported.h.in

@@ -7,13 +7,13 @@ modification, are permitted provided that the following conditions are
 met:
 
     (1) Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer. 
+    notice, this list of conditions and the following disclaimer.
 
     (2) Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
-    distribution.  
-    
+    distribution.
+
     (3) The name of the author may not be used to
     endorse or promote products derived from this software without
     specific prior written permission.

libbacktrace/btest.c

@@ -88,7 +88,7 @@ struct sdata {
 
 struct symdata {
     const char* name;
-    uintptr_t val; 
+    uintptr_t val;
     uintptr_t size;
     int failed;
 };

libbacktrace/configure.ac

@@ -6,13 +6,13 @@
 # met:
 
 #     (1) Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer. 
+#     notice, this list of conditions and the following disclaimer.
 
 #     (2) Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in
 #     the documentation and/or other materials provided with the
-#     distribution.  
-    
+#     distribution.
+
 #     (3) The name of the author may not be used to
 #     endorse or promote products derived from this software without
 #     specific prior written permission.