https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123220
Bug ID: 123220
Summary: Cannot build support libraries (e.g. libstdc++) with
stack protection
Product: gcc
Version: 15.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: ossman at cendio dot se
Target Milestone: ---
We want to have stack protection everywhere, including libraries provided by
gcc. Unfortunately, this doesn't seem to be possible because of a circular
dependency on libssp.
We tried to achieve this by doing:
> CFLAGS_FOR_TARGET=-fstack-protector-strong
> CXXFLAGS_FOR_TARGET=-fstack-protector-strong
> LDFLAGS_FOR_TARGET=-fstack-protector-strong
This fails the build, because libssp isn't available yet:
> configure:4261:
> /opt/docker-cenbuild/cenbuild/repo/rpmbuild/BUILD/gcc-15.2.0/build/./gcc/xgcc
> -B/opt/docker-cenbuild/cenbuild/repo/rpmbuild/BUILD/gcc-15.2.0/build/./gcc/
> -L/usr/x86_64-w64-mingw32/lib -L/usr/mingw/lib -isystem
> /usr/x86_64-w64-mingw32/include -isystem /usr/mingw/include
> -B/usr/x86_64-w64-mingw32/bin/ -B/usr/x86_64-w64-mingw32/lib/ -isystem
> /usr/x86_64-w64-mingw32/include -isystem /usr/x86_64-w64-mingw32/sys-include
> -o conftest -O2 -g -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3
> -Wp,-D_GLIBCXX_ASSERTIONS -fstack-clash-protection -fstack-protector-strong
> -g -fstack-protector-strong conftest.c >&5
> /usr/x86_64-w64-mingw32/bin/ld: cannot find -lssp_nonshared: No such file or
> directory
> /usr/x86_64-w64-mingw32/bin/ld: cannot find -lssp: No such file or directory
> collect2: error: ld returned 1 exit status
This is from the configure stage of libstdc++.
