[Fedora-packaging] %optflags macro for clang?
I am trying to run the unit tests for an application (that is only
header files) in the%check section of the RPM spec file, running cmake
on both gcc and clang with %optflags macro on Fedora rawhide.
According to the guideline
https://docs.fedoraproject.org/en-US/packaging-guidelines/#_compiler_flags
, it seems %optflags macro works with both gcc and clang without the
restriction for a specific compiler.
This cmake command for gcc works.
```
CC=gcc CXX=g++ cmake .. \
-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
-DCMAKE_C_FLAGS="%{optflags}" \
-DCMAKE_CXX_FLAGS="%{optflags}"
%make_build
```
But this cmake command for clang does not work with the error
"clang-10: error: unknown argument: '-fstack-clash-protection'". The
used clang version is 10.0.0.
Should %{optflags} work for both gcc and clang? Is it a bug of the
%optflags macro?
```
CC=clang CXX=clang++ cmake .. \
-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
-DCMAKE_C_FLAGS="%{optflags}" \
-DCMAKE_CXX_FLAGS="%{optflags}"
%make_build
```
The log is here.
```
+ CC=clang
+ CXX=clang++
+ cmake .. -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON '-DCMAKE_C_FLAGS=-O2 -g
-pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
-Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong
-grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
'-DCMAKE_CXX_FLAGS=-O2 -g -pipe -Wall -Werror=format-security
-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions
-fstack-protector-strong -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
-- The C compiler identification is Clang 10.0.0
-- The CXX compiler identification is Clang 10.0.0
-- Check for working C compiler: /usr/bin/clang
-- Check for working C compiler: /usr/bin/clang - broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCCompiler.cmake:60 (message):
The C compiler
"/usr/bin/clang"
is not able to compile a simple test program.
It fails with the following output:
Change Dir:
/builddir/build/BUILD/simde-0d632e1e0bd0a258ce3d3e240fbec4dd71234819/test/build-clang/CMakeFiles/CMakeTmp
----
Run Build Command(s):/usr/bin/gmake cmTC_686bc/fast &&
/usr/bin/gmake -f CMakeFiles/cmTC_686bc.dir/build.make
CMakeFiles/cmTC_686bc.dir/build
gmake[1]: Entering directory
'/builddir/build/BUILD/simde-0d632e1e0bd0a258ce3d3e240fbec4dd71234819/test/build-clang/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_686bc.dir/testCCompiler.c.o
/usr/bin/clang -O2 -g -pipe -Wall -Werror=format-security
-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions
-fstack-protector-strong -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection
-o CMakeFiles/cmTC_686bc.dir/testCCompiler.c.o -c
/builddir/build/BUILD/simde-0d632e1e0bd0a258ce3d3e240fbec4dd71234819/test/build-clang/CMakeFiles/CMakeTmp/testCCompiler.c
clang-10: error: unknown argument: '-fstack-clash-protection'
gmake[1]: *** [CMakeFiles/cmTC_686bc.dir/build.make:83:
CMakeFiles/cmTC_686bc.dir/testCCompiler.c.o] Error 1
gmake[1]: Leaving directory
'/builddir/build/BUILD/simde-0d632e1e0bd0a258ce3d3e240fbec4dd71234819/test/build-clang/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:138: cmTC_686bc/fast] Error 2
```
Thanks.
--
Jun | He - His - Him