git: a4f6bfe30406 - stable/14 - libgcc_{eh,s}: restore __*_frame_info symbols post llvm18

The branch stable/14 has been updated by dim:

URL: https://cgit.FreeBSD.org/src/commit/?id=a4f6bfe30406d2ec0050807c73a836d027ed4be5

commit a4f6bfe30406d2ec0050807c73a836d027ed4be5
Author:     Brooks Davis <brooks@FreeBSD.org>
AuthorDate: 2024-04-19 21:45:05 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2024-04-20 10:04:35 +0000

    libgcc_{eh,s}: restore __*_frame_info symbols post llvm18
    
    The upstream llvm commit 5eb44df1b64d made the addition of these GCC
    compatability symbols dependent on build configuration rather than
    hardcoded for amd64, i386, and powerpc.  Reenable them.
    
    Reviewed by:    dim
    Differential Revision:  https://reviews.freebsd.org/D44877
    
    (cherry picked from commit 0b9e3585805e83718c3ebdab923aca51597193cd)
---
 lib/libgcc_eh/Makefile.inc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/libgcc_eh/Makefile.inc b/lib/libgcc_eh/Makefile.inc
index 9e194cc875f1..75e7d743a720 100644
--- a/lib/libgcc_eh/Makefile.inc
+++ b/lib/libgcc_eh/Makefile.inc
@@ -17,6 +17,9 @@ SRCS_EXC+=	UnwindRegistersSave.S
 SRCS_EXC+=	libunwind.cpp
 
 SRCS+=		${SRCS_EXC}
+.if ${MACHINE} == "amd64" || ${MACHINE} == "i386" || ${MACHINE} == "powerpc"
+CFLAGS.UnwindLevel1-gcc-ext.c+=	-D_LIBUNWIND_SUPPORT_FRAME_APIS
+.endif
 .for file in ${SRCS_EXC:M*.c}
 CFLAGS.${file}+=	-fno-exceptions -funwind-tables
 .if ${MK_ASAN} != "no"