[Bug gold/18703] Symbol version and Version script incompatibility with BFD ld

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18703

--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Sriraman Tallam from comment #15)
>
> H.J. :  Can we use Cary's idea to fix libgcc/config/i386/cpuinfo.c to
> make libgcc_s.so.1 do the right thing with gold too until this issue
> is resolved in some manner?
> 

You can pass -fuse-ld=bfd to build libgcc_s.so.1 on Linux:

diff --git a/libgcc/config/i386/t-linux b/libgcc/config/i386/t-linux
index 11bb46e..12aab16 100644
--- a/libgcc/config/i386/t-linux
+++ b/libgcc/config/i386/t-linux
@@ -3,4 +3,8 @@
 # t-slibgcc-elf-ver and t-linux
 SHLIB_MAPFILES = libgcc-std.ver $(srcdir)/config/i386/libgcc-glibc.ver

+# Work around gold bug:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=18703
+SHLIB_LDFLAGS += -fuse-ld=bfd
+
 HOST_LIBGCC2_CFLAGS += -mlong-double-80 -DUSE_ELF_SYMVER

Or you have to make sure those symbols in both libgcc.a and libgcc.so.1
are correct.

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