* crtstuff.c (USE_EH_FRAME_REGISTRY): Let USE_EH_FRAME_REGISTRY_ALWAYS
override USE_PT_GNU_EH_FRAME.
[__LIBGCC_EH_FRAME_SECTION_NAME__ && !USE_PT_GNU_EH_FRAME]: Sanity-
check USE_EH_FRAME_REGISTRY_ALWAYS against
__LIBGCC_EH_FRAME_SECTION_NAME__, emit error if unsane.
* Makefile.in (FORCE_EXPLICIT_EH_REGISTRY): New
variable for substituted force_explicit_eh_registry.
(CRTSTUFF_CFLAGS): Add FORCE_EXPLICIT_EH_REGISTRY.
* configure.ac (explicit-exception-frame-registration):
New AC_ARG_ENABLE.
* configure: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215443 138bc75d-0d04-0410-961f-82ee72b054a4