https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111936
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- Run autoreconf in the libstdc++-v3 dir, but you need the right versions of automake and autoconf. The effect of doing that would be this additional patch, which I didn't show (because it's just a generated file and our usual convention is to not include changes to generated files in patches, because it can be regenerated): --- a/libstdc++-v3/src/libbacktrace/Makefile.in +++ b/libstdc++-v3/src/libbacktrace/Makefile.in @@ -472,9 +472,10 @@ libstdc___libbacktrace_la_CPPFLAGS = \ C_WARN_FLAGS = $(WARN_FLAGS) -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wno-unused-but-set-variable CXX_WARN_FLAGS = $(WARN_FLAGS) -Wno-unused-parameter -AM_CFLAGS = $(C_WARN_FLAGS) $(EXTRA_CFLAGS) -AM_CXXFLAGS = $(CXX_WARN_FLAGS) -fno-rtti -fno-exceptions \ - $(EXTRA_CXXFLAGS) +AM_CFLAGS = $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ + $(C_WARN_FLAGS) $(EXTRA_CFLAGS) +AM_CXXFLAGS = $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ + $(CXX_WARN_FLAGS) -fno-rtti -fno-exceptions $(EXTRA_CXXFLAGS) obj_prefix = std_stacktrace # Each FILE.c in SOURCES will be compiled to SHORTNAME-FILE.o
