error building release 0.6.0 from tarball: duplicate case value FFI_TYPE_LONGDOUBLE

[Marco Maggi]

On my x86_64-slackware-linux-gnu, while building release 0.6.0 from the tarball I get this:

[ 38%] Building C object build/ext/ffi/libffi/CMakeFiles/libffi.dir/src/x86/ffi64.c.o
/home/marco/var/build/devel/sagittarius-0.6.0/ext/ffi/libffi-3.0.13/src/x86/ffi64.c: In function 'classify_argument':
/home/marco/var/build/devel/sagittarius-0.6.0/ext/ffi/libffi-3.0.13/src/x86/ffi64.c:205:5: error: duplicate case value
     case FFI_TYPE_LONGDOUBLE:
     ^
/home/marco/var/build/devel/sagittarius-0.6.0/ext/ffi/libffi-3.0.13/src/x86/ffi64.c:202:5: error: previously used here
     case FFI_TYPE_DOUBLE:
     ^
make[2]: *** [build/ext/ffi/libffi/CMakeFiles/libffi.dir/src/x86/ffi64.c.o] Error 1
make[1]: *** [build/ext/ffi/libffi/CMakeFiles/libffi.dir/all] Error 2
make: *** [all] Error 2

[Takashi Kato]

Thank you for the report!

For the quick fix, could you change the following like this:

#set(HAVE_LONG_DOUBLE 0)
set(HAVE_LONG_DOUBLE 1)

This is located on sagittarius/ext/ffi/libffi-3.0.13/CMakeLists.txt line 88. I'll also change to check if long double is supported properly.

Intentionally, bundled libffi is only for Windows (which doesn't have package manager). There might be other issue that CMake couldn't find libffi for some reason. I'll also check.

[Takashi Kato]

Modifying bundled libffi CMakeLists.txt to be able to compile on x86_64 environment. Fixes #93

→ <<cset 1cc6f7feecd6>>

[Marco Maggi]

The latest checkout from the repository works fine.