2.13.4: build fails

[kloczek]

gcc 11.0.1

[tkloczko@barrel x86_64-redhat-linux-gnu]$ make
/usr/bin/cmake -S/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4 -B/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu --check-build-system CMakeFiles/Makefile.cmake 0
/usr/bin/cmake -E cmake_progress_start /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu/CMakeFiles /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu//CMakeFiles/progress.marks
make  -f CMakeFiles/Makefile2 all
make[1]: Entering directory '/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu'
make  -f CMakeFiles/Catch2WithMain.dir/build.make CMakeFiles/Catch2WithMain.dir/depend
make[2]: Entering directory '/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu'
cd /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4 /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4 /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu/CMakeFiles/Catch2WithMain.dir/DependInfo.cmake --color=
make[2]: Leaving directory '/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu'
make  -f CMakeFiles/Catch2WithMain.dir/build.make CMakeFiles/Catch2WithMain.dir/build
make[2]: Entering directory '/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu'
[  0%] Building CXX object CMakeFiles/Catch2WithMain.dir/src/catch_with_main.cpp.o
/usr/bin/g++ -DCatch2WithMain_EXPORTS -I/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/single_include -O2 -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -fdata-sections -ffunction-sections -flto=auto -flto-partition=none -DNDEBUG -fPIC -o CMakeFiles/Catch2WithMain.dir/src/catch_with_main.cpp.o -c /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/src/catch_with_main.cpp
In file included from /usr/include/signal.h:315,
                 from /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/single_include/catch2/catch.hpp:8034,
                 from /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/src/catch_with_main.cpp:2:
/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/single_include/catch2/catch.hpp:10822:58: error: call to non-‘constexpr’ function ‘long int sysconf(int)’
10822 |     static constexpr std::size_t sigStackSize = 32768 >= MINSIGSTKSZ ? 32768 : MINSIGSTKSZ;
      |                                                          ^~~~~~~~~~~
In file included from /usr/include/bits/sigstksz.h:24,
                 from /usr/include/signal.h:315,
                 from /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/single_include/catch2/catch.hpp:8034,
                 from /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/src/catch_with_main.cpp:2:
/usr/include/unistd.h:630:17: note: ‘long int sysconf(int)’ declared here
  630 | extern long int sysconf (int __name) __THROW;
      |                 ^~~~~~~
In file included from /home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/src/catch_with_main.cpp:2:
/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/single_include/catch2/catch.hpp:10881:45: error: size of array ‘altStackMem’ is not an integral constant-expression
10881 |     char FatalConditionHandler::altStackMem[sigStackSize] = {};
      |                                             ^~~~~~~~~~~~
make[2]: *** [CMakeFiles/Catch2WithMain.dir/build.make:85: CMakeFiles/Catch2WithMain.dir/src/catch_with_main.cpp.o] Error 1
make[2]: Leaving directory '/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu'
make[1]: *** [CMakeFiles/Makefile2:335: CMakeFiles/Catch2WithMain.dir/all] Error 2
make[1]: Leaving directory '/home/tkloczko/rpmbuild/BUILD/Catch2-2.13.4/x86_64-redhat-linux-gnu'

[horenmar]

This is currently a known bug, where new versions of libc no longer implement MINSIGSTKSZ as a constant, but Catch2 expects it to be one, and tries to stick the result into a constexpr variable. You can solve it for now by disabling POSIX signal handling with CATCH_CONFIG_NO_POSIX_SIGNALS.

Duplicate of #2178