https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103626
Bug ID: 103626
Summary: _GLIBCXX_HOSTED should respect -ffreestanding
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Blocks: 19992
Target Milestone: ---
Libstdc++ should not define _GLIBCXX_HOSTED to 1 when __STD_HOSTED__ == 0 i.e.
when -ffreestanding is used.
This will allow -ffreestanding to affect the library as well as the compiler,
avoiding the need to build and install a separate libstdc++ to get a
freestanding implementation.
The --disable-hosted-libstdcxx configure option will still allow installation
of a library that can never be used as hosted, but it will also be possible to
use an existing hosted implementation in freestanding mode.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19992
[Bug 19992] -fhosted/-ffreestanding for C++
