Performing C++ SOURCE FILE Test CONCEPTS_FLAG_BUILTIN failed with the following output:
Change Dir: /var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source_build/CMakeFiles/CMakeScratch/TryCompile-UIUWou

Run Build Command(s):/usr/bin/ninja cmTC_f2fcc && [1/2] Building CXX object CMakeFiles/cmTC_f2fcc.dir/src.cxx.o
FAILED: CMakeFiles/cmTC_f2fcc.dir/src.cxx.o 
/usr/bin/x86_64-pc-linux-gnu-g++ -DCONCEPTS_FLAG_BUILTIN -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/include -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/range-v3/include -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/cereal/include  -pipe -march=native -fno-diagnostics-color -O2 -pipe -march=native -fno-diagnostics-color -O2 -fno-diagnostics-color -o CMakeFiles/cmTC_f2fcc.dir/src.cxx.o -c /var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source_build/CMakeFiles/CMakeScratch/TryCompile-UIUWou/src.cxx
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source_build/CMakeFiles/CMakeScratch/TryCompile-UIUWou/src.cxx:1:16: error: ‘__cpp_concepts’ was not declared in this scope
    1 | static_assert (__cpp_concepts >= 201507);
      |                ^~~~~~~~~~~~~~
ninja: build stopped: subcommand failed.


Source file was:
static_assert (__cpp_concepts >= 201507);
    int main() {}

Determining if the include file sdsl/version.hpp exists failed with the following output:
Change Dir: /var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source_build/CMakeFiles/CMakeScratch/TryCompile-RXlMhw

Run Build Command(s):/usr/bin/ninja cmTC_5f7e7 && [1/2] Building CXX object CMakeFiles/cmTC_5f7e7.dir/CheckIncludeFile.cxx.o
FAILED: CMakeFiles/cmTC_5f7e7.dir/CheckIncludeFile.cxx.o 
/usr/bin/x86_64-pc-linux-gnu-g++  -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/include -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/range-v3/include -I/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/cereal/include  -pipe -march=native -fno-diagnostics-color -O2 -pipe -march=native -fno-diagnostics-color -O2 -fno-diagnostics-color -o CMakeFiles/cmTC_5f7e7.dir/CheckIncludeFile.cxx.o -c /var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source_build/CMakeFiles/CMakeScratch/TryCompile-RXlMhw/CheckIncludeFile.cxx
In file included from /var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source_build/CMakeFiles/CMakeScratch/TryCompile-RXlMhw/CheckIncludeFile.cxx:1:
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:27:11: error: ‘uint8_t’ does not name a type
   27 | constexpr uint8_t sdsl_version_major = SDSL_VERSION_MAJOR;
      |           ^~~~~~~
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:12:1: note: ‘uint8_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
   11 | #include <string>
  +++ |+#include <cstdint>
   12 | 
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:29:11: error: ‘uint8_t’ does not name a type
   29 | constexpr uint8_t sdsl_version_minor = SDSL_VERSION_MINOR;
      |           ^~~~~~~
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:29:11: note: ‘uint8_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:31:11: error: ‘uint8_t’ does not name a type
   31 | constexpr uint8_t sdsl_version_patch = SDSL_VERSION_PATCH;
      |           ^~~~~~~
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:31:11: note: ‘uint8_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:34:49: error: ‘sdsl_version_major’ was not declared in this scope; did you mean ‘sdsl_version’?
   34 | std::string const sdsl_version = std::to_string(sdsl_version_major) + "." + std::to_string(sdsl_version_minor) + "." +
      |                                                 ^~~~~~~~~~~~~~~~~~
      |                                                 sdsl_version
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:34:92: error: ‘sdsl_version_minor’ was not declared in this scope; did you mean ‘sdsl_version’?
   34 | std::string const sdsl_version = std::to_string(sdsl_version_major) + "." + std::to_string(sdsl_version_minor) + "." +
      |                                                                                            ^~~~~~~~~~~~~~~~~~
      |                                                                                            sdsl_version
/var/tmp/portage/sci-biology/seqan-3.1.0/work/seqan3-3.1.0-Source/submodules/sdsl-lite/include/sdsl/version.hpp:35:49: error: ‘sdsl_version_patch’ was not declared in this scope; did you mean ‘sdsl_version’?
   35 |                                  std::to_string(sdsl_version_patch);
      |                                                 ^~~~~~~~~~~~~~~~~~
      |                                                 sdsl_version
ninja: build stopped: subcommand failed.