https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103626
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:f1b51f68f8ac6c63e352dda8599aed01634212de commit r13-3034-gf1b51f68f8ac6c63e352dda8599aed01634212de Author: Jonathan Wakely <jwak...@redhat.com> Date: Tue Sep 20 11:57:28 2022 +0100 libstdc++: Make _GLIBCXX_HOSTED respect -ffreestanding [PR103626] This allows the library to switch to freestanding mode when compiling with the -ffreestanding flag. This means you don't need a separate libstdc++ build configured with --disable-hosted-libstdcxx in order to compile for a freestanding environment. The testsuite support files cannot be compiled for freestanding, so add -fno-freestanding to override any -ffreestanding in the test flags. libstdc++-v3/ChangeLog: PR libstdc++/103626 * acinclude.m4 (GLIBCXX_ENABLE_HOSTED): Define _GLIBCXX_HOSTED to __STDC_HOSTED__ for non-freestanding installations. * configure: Regenerate. * include/Makefile.am (${host_builddir}/c++config.h): Adjust grep pattern. * include/Makefile.in: Regenerate. * testsuite/lib/libstdc++.exp (v3-build_support): Use -fno-freestanding. * testsuite/libstdc++-abi/abi.exp: Likewise.
