tov/libffi-sys-rs

[DEPRECATED; see README.md] Low-level Rust bindings for libffi

libffi-sys-rs: Low-level Rust bindings for [libffi]

NOTE: this repository has been merged into https://github.com/tov/libffi-rs. Please report issues and submit pull requests there, instead of in this project.

libffi-sys-rs's Issues

unexpected close delimiter: ']' in 0.6.0

With libffi 0.6.2 as a dependency, which pulls libffi-sys 0.6.0, I get this error when building any project with that dependency:

error: unexpected close delimiter: `]`
   --> /home/alek/dev/bad-libffi/target/debug/build/libffi-sys-a12426917ae6713c/out/generated.rs:391:32
    |
391 | #[derive(Copy, Clone)]; 8usize ] , pub ptr : * mut :: std :: os :: raw :: c_void , _bindgen_union_align : u64 , }#[test]
    |                                ^
error: Could not compile `libffi-sys`.

I have a project that has libffi-sys 0.5.3 in the Cargo.lock, and that does not break with this error. I'm not sure if it's a libffi-sys thing, or a bindgen thing, but it's pretty consistent and breaking.

libffi-sys 0.7.0 fails to build on docs.rs

This seems to be because it depends on texinfo, which docs.rs doesn’t have available. See tov/libffi-rs#10.

Consider building without documentation

The FFI README says the following:

If you don't want to build documentation, use the --disable-docs configure switch.

libffi-sys-rs does not seem to be using this. I can't exactly figure it out, but this might remove the need for installing texinfo just to build libffi-sys-rs/libffi.

Build fails on ubuntu 16.04

It's likely that I broke my system while doing an upgrade from 14.04 -> 16.04. Here's the output from a libffi build:

--- stderr
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal --force -I m4
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy --force
autoreconf: running: /usr/bin/autoconf --force
autoreconf: running: /usr/bin/autoheader --force
autoreconf: running: automake --add-missing --copy --force-missing
configure.ac:31: installing './compile'
configure.ac:19: installing './missing'
Makefile.am: installing './depcomp'
autoreconf: Leaving directory `.'
configure: WARNING: unrecognized options: --disable-docs
configure: WARNING: unrecognized options: --disable-docs
configure: WARNING: unrecognized options: --disable-docs
../src/closures.c: In function ‘dlmmap_locked’:
../src/closures.c:488:7: warning: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Wunused-result]
       ftruncate (execfd, offset);
       ^
../src/closures.c:500:7: warning: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Wunused-result]
       ftruncate (execfd, offset);
       ^
ar: `u' modifier ignored since `D' is the default (see `U')
ar: `u' modifier ignored since `D' is the default (see `U')
/home/chris/repos/Gfapi-sys/target/debug/build/libffi-sys-119d5af33d831421/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:114:3: error: unknown type name 'size_t'
/home/chris/repos/Gfapi-sys/target/debug/build/libffi-sys-119d5af33d831421/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:292:1: error: unknown type name 'size_t'
/home/chris/repos/Gfapi-sys/target/debug/build/libffi-sys-119d5af33d831421/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:305:1: error: unknown type name 'size_t'
/home/chris/repos/Gfapi-sys/target/debug/build/libffi-sys-119d5af33d831421/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:333:26: error: unknown type name 'size_t'
thread 'main' panicked at '
        **********
        Bindgen generation failed. Please file a bug report.
        **********
    : ()', /buildslave/rust-buildbot/slave/beta-dist-rustc-linux/build/src/libcore/result.rs:868
note: Run with `RUST_BACKTRACE=1` for a backtrace.

I'm not sure how size_t couldn't be found because I can create hello-world.c files that include size_t and they compile just fine.

Release version 1.0.0

With #37 merged, I think it's a nice time to bump the version to 1.0.0; once #38 is merged at least. By bumping to 1.0.0, existing users can continue to use the 0.9 series, without the new release suddenly breaking their setup.

@tov To release a new version of libffi-sys-rs (and libffi-rs after that), I'll need to be added as a maintainer to the crates on crates.io. Could you add me as an owner? You can do so as follows:

cargo owner --add YorickPeterse libffi-sys
cargo owner --add YorickPeterse libffi

TODO

• Add @yorickpeterse as an owner of the crates libffi-sys and libffi
• Merge #38
• Publish version 1.0.0

Removing build-time dependency on bindgen

Hello! We're interested in using libffi from Rust but would ideally like to avoid the bulid-time dependency on bindgen and libclang.

Other *-sys crates seem to not depend on bindgen, for example llvm-sys. Is there a reason why this is necessary in the libffi case? If not, would you all be interested in having this feature in libffi-sys-rs?

Bumping to dev version after release makes testing PRs more difficult

Testing PRs to libffi-sys is difficult because the version in master does not match the version that you need to patch.

The standard way to test a PR for libffi-sys + libffi would be to patch using the PR branch:

[dependencies]
libffi = "0.9.0"

[patch.crates-io]
libffi-sys = { git = "https://github.com/timfish/libffi-sys-rs.git", branch = "msvc-build" }

However, this doesn't work because [patch] only works when the versions match. The PR branch (msvc-build) is based of master (0.9.1-alpha.0) and the version being patched is 0.9.0 so you'll get an error:

error: failed to resolve patches for `https://github.com/rust-lang/crates.io-index`

Caused by:
  patch for `libffi-sys` in `https://github.com/rust-lang/crates.io-index` did not resolve to any crates.

This behaviour in cargo-release is a bit counterproductive!

Build fails on CentOS 7.4.1708

Same version builds fine for me on Mac, I assume there's something not right with my CentOS system but I have no idea where to start in debugging this. The libffi-sys crate is not something I'm using directly, it's referenced from the MPI bindings.

Thanks in advance for your help!

Compiling db v0.1.0 (file:///home/bkeller/topovs/db)
Compiling libffi-sys v0.6.0
error: failed to run custom build command for `libffi-sys v0.6.0`
process didn't exit successfully: `/home/bkeller/topovs/db/target/debug/build/libffi-sys-91f03439e14a3523/build-script-build` (exit code: 101)
--- stdout
libtoolize: putting auxiliary files in `.'.
libtoolize: copying file `./ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIR, `m4'.
libtoolize: copying file `m4/libtool.m4'
libtoolize: copying file `m4/ltoptions.m4'
libtoolize: copying file `m4/ltsugar.m4'
libtoolize: copying file `m4/ltversion.m4'
libtoolize: copying file `m4/lt~obsolete.m4'
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
continue configure in default builddir "./x86_64-unknown-linux-gnu"
....exec /bin/sh .././configure "--srcdir=.." "--enable-builddir=x86_64-unknown-linux-gnu" "linux
gnu"
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for gsed... sed
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking dependency style of gcc... gcc3
checking whether gcc and cc understand -c and -o together... yes
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld
checking if the linker (/opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /opt/rh/devtoolset-6/root/usr/bin/nm -B
checking the name lister (/opt/rh/devtoolset-6/root/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /opt/rh/devtoolset-6/root/usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for mt... no
checking if : is a manifest tool... no
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld -m elf_x86_64
checking if the linker (/opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld -m elf_x86_64) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... no
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking size of size_t... 8
checking for C compiler vendor... gnu
checking whether C compiler accepts -fstrict-aliasing... yes
checking whether C compiler accepts -ffast-math... yes
checking for gcc architecture flag... 
checking for x86 cpuid 0 output... 14:756e6547:6c65746e:49656e69
checking for x86 cpuid 1 output... 406f1:43400800:7ffefbff:bfebfbff
checking whether C compiler accepts -march=core2... yes
checking for gcc architecture flag... -march=core2
checking whether C compiler accepts -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2... yes
checking CFLAGS for maximum warnings... -Wall
checking whether to enable maintainer-specific portions of Makefiles... no
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking for mmap... yes
checking for mkostemp... yes
checking for sys/mman.h... (cached) yes
checking for mmap... (cached) yes
checking whether read-only mmap of a plain file works... yes
checking whether mmap from /dev/zero works... yes
checking for MAP_ANON(YMOUS)... yes
checking whether mmap with MAP_ANON(YMOUS) works... yes
checking for ANSI C header files... (cached) yes
checking for memcpy... yes
checking for size_t... yes
checking for working alloca.h... yes
checking for alloca... yes
checking size of double... 8
checking size of long double... 16
checking whether byte ordering is bigendian... no
checking assembler .cfi pseudo-op support... yes
checking assembler supports pc related relocs... yes
checking assembler .ascii pseudo-op support... yes
checking assembler .string pseudo-op support... yes
checking for _ prefix in compiled symbols... no
checking toolchain supports unwind section type... yes
checking whether .eh_frame section should be read-only... yes
checking for __attribute__((visibility("hidden")))... yes
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating include/Makefile
config.status: creating include/ffi.h
config.status: creating Makefile
config.status: creating testsuite/Makefile
config.status: creating man/Makefile
config.status: creating libffi.pc
config.status: creating fficonfig.h
config.status: linking ../src/x86/ffitarget.h to include/ffitarget.h
config.status: executing buildir commands
config.status: create top_srcdir/Makefile guessed from local Makefile
config.status: build in x86_64-unknown-linux-gnu (HOST=x86_64-unknown-linux-gnu)
config.status: executing depfiles commands
config.status: executing libtool commands
config.status: executing include commands
config.status: executing src commands
MAKE x86_64-unknown-linux-gnu : 1 * install
make[1]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu'
Making install in include
make[2]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/include'
make[3]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/include'
make[3]: Nothing to be done for 'install-exec-am'.
 /usr/bin/mkdir -p '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/libffi-3.2.1/include'
 /usr/bin/install -c -m 644 ffi.h ffitarget.h '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/libffi-3.2.1/include'
make[3]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/include'
make[2]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/include'
Making install in testsuite
make[2]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/testsuite'
make[3]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/testsuite'
make[3]: Nothing to be done for 'install-exec-am'.
make[3]: Nothing to be done for 'install-data-am'.
make[3]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/testsuite'
make[2]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/testsuite'
Making install in man
make[2]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/man'
make[3]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/man'
make[3]: Nothing to be done for 'install-exec-am'.
 /usr/bin/mkdir -p '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/share/man/man3'
 /usr/bin/install -c -m 644 ../../man/ffi.3 ../../man/ffi_call.3 ../../man/ffi_prep_cif.3 ../../man/ffi_prep_cif_var.3 '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/share/man/man3'
make[3]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/man'
make[2]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu/man'
make[2]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu'
restore=: && backupdir=".am$$" && \
am__cwd=`pwd` && CDPATH="${ZSH_VERSION+.}:" && cd .. && \
rm -rf $backupdir && mkdir $backupdir && \
if (/bin/sh /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/missing makeinfo  --version) >/dev/null 2>&1; then \
  for f in ../doc/libffi.info ../doc/libffi.info-[0-9] ../doc/libffi.info-[0-9][0-9] ../doc/libffi.i[0-9] ../doc/libffi.i[0-9][0-9]; do \
    if test -f $f; then mv $f $backupdir; restore=mv; else :; fi; \
  done; \
else :; fi && \
cd "$am__cwd"; \
if /bin/sh /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/missing makeinfo    -I doc -I ../doc \
 -o ../doc/libffi.info ../doc/libffi.texi; \
then \
  rc=0; \
  CDPATH="${ZSH_VERSION+.}:" && cd ..; \
else \
  rc=$?; \
  CDPATH="${ZSH_VERSION+.}:" && cd .. && \
  $restore $backupdir/* `echo "./../doc/libffi.info" | sed 's|[^/]*$||'`; \
fi; \
rm -rf $backupdir; exit $rc
depbase=`echo src/prep_cif.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/prep_cif.lo -MD -MP -MF $depbase.Tpo -c -o src/prep_cif.lo ../src/prep_cif.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/prep_cif.lo -MD -MP -MF src/.deps/prep_cif.Tpo -c ../src/prep_cif.c  -fPIC -DPIC -o src/.libs/prep_cif.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/prep_cif.lo -MD -MP -MF src/.deps/prep_cif.Tpo -c ../src/prep_cif.c  -fPIC -DPIC -o src/prep_cif.o >/dev/null 2>&1
depbase=`echo src/types.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/types.lo -MD -MP -MF $depbase.Tpo -c -o src/types.lo ../src/types.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/types.lo -MD -MP -MF src/.deps/types.Tpo -c ../src/types.c  -fPIC -DPIC -o src/.libs/types.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/types.lo -MD -MP -MF src/.deps/types.Tpo -c ../src/types.c  -fPIC -DPIC -o src/types.o >/dev/null 2>&1
depbase=`echo src/raw_api.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/raw_api.lo -MD -MP -MF $depbase.Tpo -c -o src/raw_api.lo ../src/raw_api.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/raw_api.lo -MD -MP -MF src/.deps/raw_api.Tpo -c ../src/raw_api.c  -fPIC -DPIC -o src/.libs/raw_api.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/raw_api.lo -MD -MP -MF src/.deps/raw_api.Tpo -c ../src/raw_api.c  -fPIC -DPIC -o src/raw_api.o >/dev/null 2>&1
depbase=`echo src/java_raw_api.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/java_raw_api.lo -MD -MP -MF $depbase.Tpo -c -o src/java_raw_api.lo ../src/java_raw_api.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/java_raw_api.lo -MD -MP -MF src/.deps/java_raw_api.Tpo -c ../src/java_raw_api.c  -fPIC -DPIC -o src/.libs/java_raw_api.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/java_raw_api.lo -MD -MP -MF src/.deps/java_raw_api.Tpo -c ../src/java_raw_api.c  -fPIC -DPIC -o src/java_raw_api.o >/dev/null 2>&1
depbase=`echo src/closures.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/closures.lo -MD -MP -MF $depbase.Tpo -c -o src/closures.lo ../src/closures.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/closures.lo -MD -MP -MF src/.deps/closures.Tpo -c ../src/closures.c  -fPIC -DPIC -o src/.libs/closures.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/closures.lo -MD -MP -MF src/.deps/closures.Tpo -c ../src/closures.c  -fPIC -DPIC -o src/closures.o >/dev/null 2>&1
depbase=`echo src/x86/ffi64.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/x86/ffi64.lo -MD -MP -MF $depbase.Tpo -c -o src/x86/ffi64.lo ../src/x86/ffi64.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/x86/ffi64.lo -MD -MP -MF src/x86/.deps/ffi64.Tpo -c ../src/x86/ffi64.c  -fPIC -DPIC -o src/x86/.libs/ffi64.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/x86/ffi64.lo -MD -MP -MF src/x86/.deps/ffi64.Tpo -c ../src/x86/ffi64.c  -fPIC -DPIC -o src/x86/ffi64.o >/dev/null 2>&1
depbase=`echo src/x86/unix64.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool    --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src  -I. -I../include -Iinclude -I../src  -MT src/x86/unix64.lo -MD -MP -MF $depbase.Tpo -c -o src/x86/unix64.lo ../src/x86/unix64.S &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -I. -I../include -Iinclude -I../src -MT src/x86/unix64.lo -MD -MP -MF src/x86/.deps/unix64.Tpo -c ../src/x86/unix64.S  -fPIC -DPIC -o src/x86/.libs/unix64.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -I. -I../include -Iinclude -I../src -MT src/x86/unix64.lo -MD -MP -MF src/x86/.deps/unix64.Tpo -c ../src/x86/unix64.S  -fPIC -DPIC -o src/x86/unix64.o >/dev/null 2>&1
depbase=`echo src/x86/ffi.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src   -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -MT src/x86/ffi.lo -MD -MP -MF $depbase.Tpo -c -o src/x86/ffi.lo ../src/x86/ffi.c &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/x86/ffi.lo -MD -MP -MF src/x86/.deps/ffi.Tpo -c ../src/x86/ffi.c  -fPIC -DPIC -o src/x86/.libs/ffi.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2 -Wall -fexceptions -MT src/x86/ffi.lo -MD -MP -MF src/x86/.deps/ffi.Tpo -c ../src/x86/ffi.c  -fPIC -DPIC -o src/x86/ffi.o >/dev/null 2>&1
depbase=`echo src/x86/sysv.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ./libtool    --mode=compile gcc -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src  -I. -I../include -Iinclude -I../src  -MT src/x86/sysv.lo -MD -MP -MF $depbase.Tpo -c -o src/x86/sysv.lo ../src/x86/sysv.S &&\
mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -I. -I../include -Iinclude -I../src -MT src/x86/sysv.lo -MD -MP -MF src/x86/.deps/sysv.Tpo -c ../src/x86/sysv.S  -fPIC -DPIC -o src/x86/.libs/sysv.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -I. -I../include -Iinclude -I../src -MT src/x86/sysv.lo -MD -MP -MF src/x86/.deps/sysv.Tpo -c ../src/x86/sysv.S  -fPIC -DPIC -o src/x86/sysv.o >/dev/null 2>&1
/bin/sh ./libtool  --tag=CC   --mode=link gcc  -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions   -o libffi_convenience.la  src/prep_cif.lo src/types.lo src/raw_api.lo src/java_raw_api.lo src/closures.lo                                src/x86/ffi64.lo src/x86/unix64.lo src/x86/ffi.lo src/x86/sysv.lo          
libtool: link: ar cru .libs/libffi_convenience.a src/.libs/prep_cif.o src/.libs/types.o src/.libs/raw_api.o src/.libs/java_raw_api.o src/.libs/closures.o src/x86/.libs/ffi64.o src/x86/.libs/unix64.o src/x86/.libs/ffi.o src/x86/.libs/sysv.o 
libtool: link: ranlib .libs/libffi_convenience.a
libtool: link: ( cd ".libs" && rm -f "libffi_convenience.la" && ln -s "../libffi_convenience.la" "libffi_convenience.la" )
/bin/sh ./libtool  --tag=CC   --mode=link gcc  -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2  -Wall -fexceptions -no-undefined -version-info `grep -v '^#' ../libtool-version`    -o libffi.la -rpath /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64 src/prep_cif.lo src/types.lo src/raw_api.lo src/java_raw_api.lo src/closures.lo                                src/x86/ffi64.lo src/x86/unix64.lo src/x86/ffi.lo src/x86/sysv.lo          
libtool: link: gcc -shared  -fPIC -DPIC  src/.libs/prep_cif.o src/.libs/types.o src/.libs/raw_api.o src/.libs/java_raw_api.o src/.libs/closures.o src/x86/.libs/ffi64.o src/x86/.libs/unix64.o src/x86/.libs/ffi.o src/x86/.libs/sysv.o    -O3 -march=core2   -Wl,-soname -Wl,libffi.so.6 -o .libs/libffi.so.6.0.4
libtool: link: (cd ".libs" && rm -f "libffi.so.6" && ln -s "libffi.so.6.0.4" "libffi.so.6")
libtool: link: (cd ".libs" && rm -f "libffi.so" && ln -s "libffi.so.6.0.4" "libffi.so")
libtool: link: ar cru .libs/libffi.a  src/prep_cif.o src/types.o src/raw_api.o src/java_raw_api.o src/closures.o src/x86/ffi64.o src/x86/unix64.o src/x86/ffi.o src/x86/sysv.o
libtool: link: ranlib .libs/libffi.a
libtool: link: ( cd ".libs" && rm -f "libffi.la" && ln -s "../libffi.la" "libffi.la" )
make[3]: Entering directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu'
 /usr/bin/mkdir -p '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64'
 /bin/sh ./libtool   --mode=install /usr/bin/install -c   libffi.la '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64'
libtool: install: /usr/bin/install -c .libs/libffi.so.6.0.4 /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64/libffi.so.6.0.4
libtool: install: (cd /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64 && { ln -s -f libffi.so.6.0.4 libffi.so.6 || { rm -f libffi.so.6 && ln -s libffi.so.6.0.4 libffi.so.6; }; })
libtool: install: (cd /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64 && { ln -s -f libffi.so.6.0.4 libffi.so || { rm -f libffi.so && ln -s libffi.so.6.0.4 libffi.so; }; })
libtool: install: /usr/bin/install -c .libs/libffi.lai /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64/libffi.la
libtool: install: /usr/bin/install -c .libs/libffi.a /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64/libffi.a
libtool: install: chmod 644 /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64/libffi.a
libtool: install: ranlib /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64/libffi.a
libtool: finish: PATH="/home/bkeller/.cargo/bin:/opt/rh/devtoolset-6/root/usr/bin:/opt/rh/devtoolset-6/root/usr/bin:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/mpi/intel64/bin:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/bin/intel64:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/mpi/intel64/bin:/export/swtools/intel/debugger_2017/gdb/intel64_mic/bin:/home/bkeller/.cargo/bin:/home/bkeller/.local/bin:/home/bkeller/bin:/home/bkeller/anaconda3/bin:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/mpi/intel64/bin:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/bin/intel64:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/mpi/intel64/bin:/export/swtools/intel/debugger_2017/gdb/intel64_mic/bin:/home/bkeller/.cargo/bin:/home/bkeller/.local/bin:/home/bkeller/bin:/home/bkeller/anaconda3/bin:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/mpi/intel64/bin:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/bin/intel64:/export/swtools/intel/compilers_and_libraries_2017.2.174/linux/mpi/intel64/bin:/export/swtools/intel/debugger_2017/gdb/intel64_mic/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/export/swtools/bazel:/export/swtools/hadoop/bin:/export/swtools/hadoop/sbin:/export/swtools/sbt/bin:/export/swtools/spark/bin:/export/swtools/spark/sbin:/export/swtools/bazel:/export/swtools/hadoop/bin:/export/swtools/hadoop/sbin:/export/swtools/sbt/bin:/export/swtools/spark/bin:/export/swtools/spark/sbin:/export/swtools/bazel:/export/swtools/hadoop/bin:/export/swtools/hadoop/sbin:/export/swtools/sbt/bin:/export/swtools/spark/bin:/export/swtools/spark/sbin:/sbin" ldconfig -n /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64
----------------------------------------------------------------------
Libraries have been installed in:
   /home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/../lib64

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
 /usr/bin/mkdir -p '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/share/info'
 /usr/bin/install -c -m 644 ../doc/libffi.info '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/share/info'
 install-info --info-dir='/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/share/info' '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/share/info/libffi.info'
 /usr/bin/mkdir -p '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/pkgconfig'
 /usr/bin/install -c -m 644 libffi.pc '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/pkgconfig'
make[3]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu'
make[2]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu'
make[1]: Leaving directory '/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-build/x86_64-unknown-linux-gnu'

--- stderr
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal --force -I m4
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy --force
autoreconf: running: /usr/bin/autoconf --force
autoreconf: running: /usr/bin/autoheader --force
autoreconf: running: automake --add-missing --copy --force-missing
configure.ac:40: installing './compile'
configure.ac:8: installing './config.guess'
configure.ac:8: installing './config.sub'
configure.ac:19: installing './install-sh'
configure.ac:19: installing './missing'
Makefile.am: installing './depcomp'
Makefile.am:56: installing './mdate-sh'
autoreconf: Leaving directory `.'
/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:75:10: fatal error: 'stddef.h' file not found
/home/bkeller/topovs/db/target/debug/build/libffi-sys-5c56f19040e3c580/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:75:10: fatal error: 'stddef.h' file not found, err: true
thread 'main' panicked at '
        **********
        Bindgen generation failed. Please file a bug report.
        **********
        : ()', libcore/result.rs:945:5
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at libstd/sys_common/backtrace.rs:71
             at libstd/sys_common/backtrace.rs:59
   2: std::panicking::default_hook::{{closure}}
             at libstd/panicking.rs:207
   3: std::panicking::default_hook
             at libstd/panicking.rs:223
   4: std::panicking::rust_panic_with_hook
             at libstd/panicking.rs:402
   5: std::panicking::begin_panic_fmt
             at libstd/panicking.rs:349
   6: rust_begin_unwind
             at libstd/panicking.rs:325
   7: core::panicking::panic_fmt
             at libcore/panicking.rs:72
   8: core::result::unwrap_failed
             at /checkout/src/libcore/macros.rs:26
   9: <core::result::Result<T, E>>::expect
             at /checkout/src/libcore/result.rs:809
  10: build_script_build::main
             at ./build.rs:61
  11: std::rt::lang_start::{{closure}}
             at /checkout/src/libstd/rt.rs:74
  12: std::panicking::try::do_call
             at libstd/rt.rs:59
             at libstd/panicking.rs:306
  13: __rust_maybe_catch_panic
             at libpanic_unwind/lib.rs:102
  14: std::rt::lang_start_internal
             at libstd/panicking.rs:285
             at libstd/panic.rs:361
             at libstd/rt.rs:58
  15: std::rt::lang_start
             at /checkout/src/libstd/rt.rs:74
  16: main
  17: __libc_start_main
  18: <unknown>

Building the crate with DESTDIR set breaks the linking of libffi

I ran into this today due to a Makefile that sets DESTDIR for my own project, but doesn't clear it when running cargo build. This results in the following error:

   Compiling libffi-sys v0.9.2-alpha.0 (/home/yorickpeterse/Projects/rust/libffi-sys-rs)
error: could not find native static library `ffi`, perhaps an -L flag is missing?

error: aborting due to previous error

For example:

env DESTDIR=/tmp/blorb cargo build

I think libffi-sys-rs should clear the environment variables before building libffi from source (as is done when building it on a non MSVC Windows environment), ensuring outer environment variables don't mess up the libffi compilation.

Does libffi-sys-rs support Windows?

I'm currently trying to use libffi, and I would like to support windows. When building libffi-sys on x86_64 windows (either using GNU or MSVC), the output is as follows (full build output: https://ci.appveyor.com/project/YorickPeterse/inko/build/166/job/5p9n02e84nrwu3bu):

   Compiling libffi-sys v0.6.2
error: failed to run custom build command for `libffi-sys v0.6.2`
process didn't exit successfully: `C:\projects\inko\vm\target\debug\build\libffi-sys-cdc3debe8ea09211\build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'Generating configure: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }', libcore\result.rs:945:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.
make: *** [Makefile:30: test] Error 101

The FFI README says the following for Windows (followed by some more notes for Windows):

It's also possible to build libffi on Windows platforms with Microsoft's Visual C++ compiler. In this case, use the msvcc.sh wrapper script during configuration like so:

path/to/configure CC=path/to/msvcc.sh CXX=path/to/msvcc.sh LD=link CPP="cl -nologo -EP"
For 64-bit Windows builds, use CC="path/to/msvcc.sh -m64" and CXX="path/to/msvcc.sh -m64". You may also need to specify --build appropriately.

The build script however doesn't seem to use anything, instead it just does the following:

libffi-sys-rs/build.rs

Lines 67 to 68 in d65c185

	run_command("Generating configure",
	Command::new("./autogen.sh").current_dir(&build_dir));

As such my question is simple: should I do anything else (or install any other dependencies besides the one mentioned in the README), or does libffi-sys-rs need to make some changes to support Windows?

lib/ vs lib64/

Just tried compiling this crate on a 64-bit NixOS system.

And I ran into the issue that the compiled native libffi ended up in a lib64/ folder, not in lib/. So changing line 23 of build.rs from

let libdir = Path::new(&prefix).join("lib");

to

let libdir = Path::new(&prefix).join("lib64");

made it compile for me. I assume a more robust solution would be to just add both variants to the search path for rustc?

For reference, this is the Nix expression I used to setup the environment:

with import <nixpkgs> {};

stdenv.mkDerivation {
  name = "libffi-rs-sys";
  src = ./.;
  LIBCLANG_PATH = "${llvmPackages.clang.cc}/lib";
  buildInputs = [ automake file gnum4 libtool clang texinfo autoconf rustc cargo ];
}

libclang dependency was changed in a semver compatible update

Please see rust-lang/cargo#5237 . Any update to a bindgen dependency that uses a new, semver-incompatible clang-sys dependency (such as libffi-sys's 0.6.4 update) is a breaking change due to this shortcoming of cargo.

libffi-sys 0.6.4 should be yanked and rereleased as libffi-sys 0.7.0.

libffi 3.3 has been released

After many years, a new release of libffi is finally available: https://github.com/libffi/libffi/releases/tag/v3.3. This would probably allow building without documentation (#18), reducing the dependencies needed.

Build fails on Ubuntu 17.10

From tov/libffi-rs#7

Ubuntu 17.10

$ rustc --version
rustc 1.25.0-nightly (f62f77403 2018-01-10)

--- stderr
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal --force -I m4
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy --force
autoreconf: running: /usr/bin/autoconf --force
autoreconf: running: /usr/bin/autoheader --force
autoreconf: running: automake --add-missing --copy --force-missing
configure.ac:31: installing './compile'
configure.ac:8: installing './config.guess'
configure.ac:8: installing './config.sub'
configure.ac:19: installing './install-sh'
configure.ac:19: installing './missing'
Makefile.am: installing './depcomp'
Makefile.am:56: installing './mdate-sh'
autoreconf: Leaving directory `.'
../src/closures.c: In function ‘dlmmap_locked’:
../src/closures.c:488:7: warning: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Wunused-result]
       ftruncate (execfd, offset);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~
../src/closures.c:500:7: warning: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Wunused-result]
       ftruncate (execfd, offset);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~
ar: `u' modifier ignored since `D' is the default (see `U')
ar: `u' modifier ignored since `D' is the default (see `U')
/home/ehiggs/src/home/ripawk/target/release/build/libffi-sys-075697e5eb3875eb/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:75:10: fatal error: 'stddef.h' file not found
/home/ehiggs/src/home/ripawk/target/release/build/libffi-sys-075697e5eb3875eb/out/libffi-root/lib/libffi-3.2.1/include/ffi.h:75:10: fatal error: 'stddef.h' file not found, err: true
thread 'main' panicked at '
        **********
        Bindgen generation failed. Please file a bug report.
        **********
        : ()', libcore/result.rs:916:5

If I make the following test file, I can build it using gcc ((Ubuntu 7.2.0-8ubuntu3) 7.2.0):

$ cat test.c
#include <stddef.h>
int main () {}
$ gcc test.c
$

I have libffi-dev installed so it would be nice if pkg-config and just used that version:

$ pkg-config --libs --cflags libffi
-lffi

Building libffi: Os { code: 2, kind: NotFound, message: "No such file or directory" }

Hi when running sample code from https://github.com/rsmpi/rsmpi using cargo build or cargo run, I encounter the following. I would appreciate it if I could know what to do. Thanks very much!

/code/trans_sort$ RUST_BACKTRACE=full cargo build
   Compiling libffi-sys v0.6.0
error: failed to run custom build command for `libffi-sys v0.6.0`

Caused by:
  process didn't exit successfully: `/code/trans_sort/target/debug/build/libffi-sys-3cdb33c6e0567cd9/build-script-build` (exit code: 101)
  --- stdout
  libtoolize: putting auxiliary files in '.'.
  libtoolize: copying file './ltmain.sh'
  libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
  libtoolize: copying file 'm4/libtool.m4'
  libtoolize: copying file 'm4/ltoptions.m4'
  libtoolize: copying file 'm4/ltsugar.m4'
  libtoolize: copying file 'm4/ltversion.m4'
  libtoolize: copying file 'm4/lt~obsolete.m4'
  checking build system type... x86_64-pc-linux-gnu
  checking host system type... x86_64-pc-linux-gnu
  checking target system type... x86_64-pc-linux-gnu
  continue configure in default builddir "./x86_64-unknown-linux-gnu"
  ....exec /bin/bash .././configure "--srcdir=.." "--enable-builddir=x86_64-unknown-linux-gnu" "linux
  gnu"
  checking build system type... x86_64-pc-linux-gnu
  checking host system type... x86_64-pc-linux-gnu
  checking target system type... x86_64-pc-linux-gnu
  checking for gsed... sed
  checking for a BSD-compatible install... /usr/bin/install -c
  checking whether build environment is sane... yes
  checking for a thread-safe mkdir -p... /bin/mkdir -p
  checking for gawk... no
  checking for mawk... mawk
  checking whether make sets $(MAKE)... no
  checking whether make supports nested variables... no
  checking for gcc... gcc
  checking whether the C compiler works... yes
  checking for C compiler default output file name... a.out
  checking for suffix of executables... 
  checking whether we are cross compiling... no
  checking for suffix of object files... o
  checking whether we are using the GNU C compiler... yes
  checking whether gcc accepts -g... yes
  checking for gcc option to accept ISO C89... none needed
  checking whether gcc understands -c and -o together... yes
  checking for style of include used by make... none
  checking dependency style of gcc... none
  checking for g++... g++
  checking whether we are using the GNU C++ compiler... yes
  checking whether g++ accepts -g... yes
  checking dependency style of g++... none
  checking dependency style of gcc... none
  checking how to print strings... printf
  checking for a sed that does not truncate output... /bin/sed
  checking for grep that handles long lines and -e... /bin/grep
  checking for egrep... /bin/grep -E
  checking for fgrep... /bin/grep -F
  checking for ld used by gcc... /usr/bin/ld
  checking if the linker (/usr/bin/ld) is GNU ld... yes
  checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
  checking the name lister (/usr/bin/nm -B) interface... BSD nm
  checking whether ln -s works... no, using cp -pR
  checking the maximum length of command line arguments... 1572864
  checking how to convert x86_64-pc-linux-gnu file names to x86_64-pc-linux-gnu format... func_convert_file_noop
  checking how to convert x86_64-pc-linux-gnu file names to toolchain format... func_convert_file_noop
  checking for /usr/bin/ld option to reload object files... -r
  checking for objdump... objdump
  checking how to recognize dependent libraries... pass_all
  checking for dlltool... no
  checking how to associate runtime and link libraries... printf %s\n
  checking for ar... ar
  checking for archiver @FILE support... @
  checking for strip... strip
  checking for ranlib... ranlib
  checking command to parse /usr/bin/nm -B output from gcc object... ok
  checking for sysroot... no
  checking for a working dd... /bin/dd
  checking how to truncate binary pipes... /bin/dd bs=4096 count=1
  checking for mt... mt
  checking if mt is a manifest tool... no
  checking how to run the C preprocessor... gcc -E
  checking for ANSI C header files... yes
  checking for sys/types.h... yes
  checking for sys/stat.h... yes
  checking for stdlib.h... yes
  checking for string.h... yes
  checking for memory.h... yes
  checking for strings.h... yes
  checking for inttypes.h... yes
  checking for stdint.h... yes
  checking for unistd.h... yes
  checking for dlfcn.h... yes
  checking for objdir... .libs
  checking if gcc supports -fno-rtti -fno-exceptions... no
  checking for gcc option to produce PIC... -fPIC -DPIC
  checking if gcc PIC flag -fPIC -DPIC works... yes
  checking if gcc static flag -static works... yes
  checking if gcc supports -c -o file.o... yes
  checking if gcc supports -c -o file.o... (cached) yes
  checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
  checking whether -lc should be explicitly linked in... no
  checking dynamic linker characteristics... GNU/Linux ld.so
  checking how to hardcode library paths into programs... immediate
  checking whether stripping libraries is possible... yes
  checking if libtool supports shared libraries... yes
  checking whether to build shared libraries... yes
  checking whether to build static libraries... yes
  checking how to run the C++ preprocessor... g++ -E
  checking for ld used by g++... /usr/bin/ld -m elf_x86_64
  checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes
  checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
  checking for g++ option to produce PIC... -fPIC -DPIC
  checking if g++ PIC flag -fPIC -DPIC works... yes
  checking if g++ static flag -static works... yes
  checking if g++ supports -c -o file.o... yes
  checking if g++ supports -c -o file.o... (cached) yes
  checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
  checking dynamic linker characteristics... (cached) GNU/Linux ld.so
  checking how to hardcode library paths into programs... immediate
  checking size of size_t... 8
  checking for C compiler vendor... gnu
  checking whether C compiler accepts -fstrict-aliasing... yes
  checking whether C compiler accepts -ffast-math... yes
  checking for gcc architecture flag... 
  checking for x86 cpuid 0 output... 16:756e6547:6c65746e:49656e69
  checking for x86 cpuid 1 output... 906ea:2060800:defa2203:178bfbff
  checking whether C compiler accepts -march=core2... yes
  checking for gcc architecture flag... -march=core2
  checking whether C compiler accepts -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -march=core2... yes
  checking CFLAGS for maximum warnings... -Wall
  checking whether to enable maintainer-specific portions of Makefiles... no
  checking sys/mman.h usability... yes
  checking sys/mman.h presence... yes
  checking for sys/mman.h... yes
  checking for mmap... yes
  checking for mkostemp... yes
  checking for sys/mman.h... (cached) yes
  checking for mmap... (cached) yes
  checking whether read-only mmap of a plain file works... yes
  checking whether mmap from /dev/zero works... yes
  checking for MAP_ANON(YMOUS)... yes
  checking whether mmap with MAP_ANON(YMOUS) works... yes
  checking for ANSI C header files... (cached) yes
  checking for memcpy... yes
  checking for size_t... yes
  checking for working alloca.h... yes
  checking for alloca... yes
  checking size of double... 8
  checking size of long double... 16
  checking whether byte ordering is bigendian... no
  checking assembler .cfi pseudo-op support... yes
  checking assembler supports pc related relocs... yes
  checking assembler .ascii pseudo-op support... yes
  checking assembler .string pseudo-op support... yes
  checking for _ prefix in compiled symbols... no
  checking toolchain supports unwind section type... yes
  checking whether .eh_frame section should be read-only... yes
  checking for __attribute__((visibility("hidden")))... yes
  checking that generated files are newer than configure... done
  configure: creating ./config.status
  config.status: creating include/Makefile
  config.status: creating include/ffi.h
  config.status: creating Makefile
  config.status: creating testsuite/Makefile
  config.status: creating man/Makefile
  config.status: creating libffi.pc
  config.status: creating fficonfig.h
  config.status: linking ../src/x86/ffitarget.h to include/ffitarget.h
  config.status: executing buildir commands
  config.status: create top_srcdir/Makefile guessed from local Makefile
  config.status: build in x86_64-unknown-linux-gnu (HOST=x86_64-unknown-linux-gnu)
  config.status: executing depfiles commands
  config.status: executing libtool commands
  config.status: executing include commands
  config.status: executing src commands

  --- stderr
  autoreconf: Entering directory `.'
  autoreconf: configure.ac: not using Gettext
  autoreconf: running: aclocal --force -I m4
  autoreconf: configure.ac: tracing
  autoreconf: running: libtoolize --copy --force
  autoreconf: running: /usr/bin/autoconf --force
  autoreconf: running: /usr/bin/autoheader --force
  autoreconf: running: automake --add-missing --copy --force-missing
  configure.ac:31: installing './compile'
  configure.ac:8: installing './config.guess'
  configure.ac:8: installing './config.sub'
  configure.ac:19: installing './install-sh'
  configure.ac:19: installing './missing'
  Makefile.am: installing './depcomp'
  Makefile.am:56: installing './mdate-sh'
  autoreconf: Leaving directory `.'
  thread 'main' panicked at 'Building libffi: Os { code: 2, kind: NotFound, message: "No such file or directory" }', /home/cuhksz_csc/.cargo/registry/src/github.com-1ecc6299db9ec823/libffi-sys-0.6.0/build.rs:27:30
  stack backtrace:
     0:     0x55d813afc8c5 - backtrace::backtrace::libunwind::trace::h14d338b30b3ea0a7
                                 at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
     1:     0x55d813afc8c5 - backtrace::backtrace::trace_unsynchronized::h73ea91d74a3fd67f
                                 at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
     2:     0x55d813afc8c5 - std::sys_common::backtrace::_print_fmt::hd42948c952866e12
                                 at src/libstd/sys_common/backtrace.rs:78
     3:     0x55d813afc8c5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha8f928866ff7571e
                                 at src/libstd/sys_common/backtrace.rs:59
     4:     0x55d813b26dec - core::fmt::write::he0c1e5f7426d2718
                                 at src/libcore/fmt/mod.rs:1076
     5:     0x55d813af8f02 - std::io::Write::write_fmt::hf3afc6cfd57d0033
                                 at src/libstd/io/mod.rs:1537
     6:     0x55d813aff4e0 - std::sys_common::backtrace::_print::hfc0110703f3696fd
                                 at src/libstd/sys_common/backtrace.rs:62
     7:     0x55d813aff4e0 - std::sys_common::backtrace::print::h3f77c6990ddfaa22
                                 at src/libstd/sys_common/backtrace.rs:49
     8:     0x55d813aff4e0 - std::panicking::default_hook::{{closure}}::heae49580a8d62d75
                                 at src/libstd/panicking.rs:198
     9:     0x55d813aff22c - std::panicking::default_hook::hecc34e3f729e213c
                                 at src/libstd/panicking.rs:217
    10:     0x55d813affb23 - std::panicking::rust_panic_with_hook::he82f5d0644692441
                                 at src/libstd/panicking.rs:526
    11:     0x55d813aff71b - rust_begin_unwind
                                 at src/libstd/panicking.rs:437
    12:     0x55d813b254a1 - core::panicking::panic_fmt::h09c929f06bb87c98
                                 at src/libcore/panicking.rs:85
    13:     0x55d813b252c3 - core::option::expect_none_failed::h188f17af6c9f404b
                                 at src/libcore/option.rs:1269
    14:     0x55d813651969 - core::result::Result<T,E>::expect::h74d1ed625e19981f
                                 at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libcore/result.rs:963
    15:     0x55d8136510dc - build_script_build::main::run_command::h11e9b2be338cc8d3
                                 at /home/cuhksz_csc/.cargo/registry/src/github.com-1ecc6299db9ec823/libffi-sys-0.6.0/build.rs:27
    16:     0x55d813650675 - build_script_build::main::h3bfc16c3e45662b9
                                 at /home/cuhksz_csc/.cargo/registry/src/github.com-1ecc6299db9ec823/libffi-sys-0.6.0/build.rs:50
    17:     0x55d813651c3b - std::rt::lang_start::{{closure}}::he72a22465750b8d1
                                 at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
    18:     0x55d813affef3 - std::rt::lang_start_internal::{{closure}}::h5d3ea623498f5f43
                                 at src/libstd/rt.rs:52
    19:     0x55d813affef3 - std::panicking::try::do_call::hac65e71be769a440
                                 at src/libstd/panicking.rs:348
    20:     0x55d813affef3 - std::panicking::try::hd4706e264bcf6712
                                 at src/libstd/panicking.rs:325
    21:     0x55d813affef3 - std::panic::catch_unwind::h948a0fb4a8b3ee82
                                 at src/libstd/panic.rs:394
    22:     0x55d813affef3 - std::rt::lang_start_internal::h72cc068ed2d0ac53
                                 at src/libstd/rt.rs:51
    23:     0x55d813651c17 - std::rt::lang_start::h4859f2d6fc25fa55
                                 at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
    24:     0x55d81365114a - main
    25:     0x7f91c3a98b97 - __libc_start_main
    26:     0x55d81364fdba - _start
    27:                0x0 - <unknown>

What does the version of clang need?

Hello!

I tried to compile lib and I had an error "thread 'main' panicked at 'function not loaded: clang_Type_getNumTemplateArguments', ../.cargo/registry/src/github.com-1ecc6299db9ec823/clang-sys-0.21.2/src/lib.rs:1456:1"
"error: failed to run custom build command for `libffi-sys v0.6.0 "

I have on 1st PC:
clang version 7.0.0 (trunk 326027) (llvm/trunk 326026)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/clang/bin

On another PC I have:
clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

And it works.