Set project as C project in CMakeLists.txt#2312
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Mab879 merged 1 commit intoOpenSCAP:mainfrom Feb 16, 2026
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The openscap tool has been recently integrated in the buildroot build
system ([1]), which makes the openscap tool buildable for a wide variety
or architectures/OSes, with a wide variety of _compilers_. And so when
such compilers are not supporting C++ projects (as it is the case with a
default buildroot toolchain), the build breaks on the following error
(see [2] for an example):
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /bin/false
-- Check for working CXX compiler: /bin/false - broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:73 (message):
The C++ compiler
"/bin/false"
is not able to compile a simple test program.
It fails with the following output:
Change Dir: '/home/autobuild/autobuild/instance-6/output-1/build/openscap-1.3.12/buildroot-build/CMakeFiles/CMakeScratch/TryCompile-tUydqI'
Run Build Command(s): /usr/bin/cmake -E env VERBOSE=1 /usr/bin/make -f Makefile cmTC_1834b/fast
make[1]: Entering directory '/home/autobuild/autobuild/instance-6/output-1/build/openscap-1.3.12/buildroot-build/CMakeFiles/CMakeScratch/TryCompile-tUydqI'
/usr/bin/make -f CMakeFiles/cmTC_1834b.dir/build.make CMakeFiles/cmTC_1834b.dir/build
make[2]: Entering directory '/home/autobuild/autobuild/instance-6/output-1/build/openscap-1.3.12/buildroot-build/CMakeFiles/CMakeScratch/TryCompile-tUydqI'
Building CXX object CMakeFiles/cmTC_1834b.dir/testCXXCompiler.cxx.o
/bin/false -o CMakeFiles/cmTC_1834b.dir/testCXXCompiler.cxx.o -c /home/autobuild/autobuild/instance-6/output-1/build/openscap-1.3.12/buildroot-build/CMakeFiles/CMakeScratch/TryCompile-tUydqI/testCXXCompiler.cxx
make[2]: *** [CMakeFiles/cmTC_1834b.dir/build.make:81: CMakeFiles/cmTC_1834b.dir/testCXXCompiler.cxx.o] Error 1
make[2]: Leaving directory '/home/autobuild/autobuild/instance-6/output-1/build/openscap-1.3.12/buildroot-build/CMakeFiles/CMakeScratch/TryCompile-tUydqI'
make[1]: *** [Makefile:134: cmTC_1834b/fast] Error 2
make[1]: Leaving directory '/home/autobuild/autobuild/instance-6/output-1/build/openscap-1.3.12/buildroot-build/CMakeFiles/CMakeScratch/TryCompile-tUydqI'
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:11 (project)
openscap does not have any C++ code to build, so restricting builds to
toolchains supporting C++ is overconstraining, the configuration step
should rather not try to check C++ support.
Enforce the project as a C project in CMakeLists.txt to make sure not to
test C++ features on the used toolchain.
[1] https://buildroot.org/
[2] https://autobuild.buildroot.org/results/1fe550ffa79f0a083a450ae03fe067a8ab7336be/build-end.log
Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Mab879
approved these changes
Feb 16, 2026
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The openscap tool has been recently integrated in the buildroot build system ([1]), which makes the openscap tool buildable for a wide variety or architectures/OSes, with a wide variety of toolchains. When the corresponding compilers are not supporting C++ projects (as it is often the case with a buildroot toolchain in minimal configuration), the build breaks on the following error (see [2] for an example):
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /bin/false
-- Check for working CXX compiler: /bin/false - broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:73 (message):
The C++ compiler
Call Stack (most recent call first):
CMakeLists.txt:11 (project)
openscap does not have any C++ code to build, so restricting builds to toolchains supporting C++ is likely over-constraining, the configuration step should rather not try to check C++ support.
Enforce the project as a C project in CMakeLists.txt to make sure not to test C++ features on the used toolchain.
[1] https://buildroot.org/
[2] https://autobuild.buildroot.org/results/1fe550ffa79f0a083a450ae03fe067a8ab7336be/build-end.log