The patch to use -z ignore/-z record for libgcc_s on Solaris caused far
more problems than it initially seemed:
* Before Solaris 11 where dl_iterate_phdr is used, crtbegin.o contains
references to
__register_frame_info_bases/__deregister_frame_info_bases which cause
libgcc_s.so.1 to be dragged into even the most trivial C program,
which breaks bootstrap.
* On Solaris 11/x86 with gld, crt1.o is delivered with a reference to
_DYNAMIC (unlike SPARC), which again drags in libgcc_s.so.1. I don't
yet know why this doesn't happen with Solaris ld.
Anyway, this patch disables -z ignore/--as-needed use in all those
configurations.
Bootstrapped without regressions on i386-pc-solaris2.{9,10,11} and
sparc-sun-solaris2.{9,10,11} with as/ld, gas/gld, installed on mainline.
Rainer
2013-04-25 Rainer Orth <r...@cebitec.uni-bielefeld.de>
PR target/57261
* configure.ac (gcc_cv_ld_as_needed): Disable before Solaris 11
and Solaris 11+/x86 with gld.
* configure: Regenerate.
# HG changeset patch
# Parent a618b2ae5c9b7838e4785a8179e0a67fb55365f7
Fix Solaris --as-needed/-z ignore detection
diff --git a/gcc/configure.ac b/gcc/configure.ac
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -4560,6 +4560,23 @@ elif test x$gcc_cv_ld != x; then
esac
fi
fi
+# --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
+# dl_iterate_phdr, i.e. since Solaris 11.
+case "$target" in
+ *-*-solaris2.1[[1-9]]*)
+ case "$target" in
+ i?86-*-* | x86_64-*-*)
+ if echo "$ld_ver" | grep GNU > /dev/null; then
+ # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
+ gcc_cv_ld_as_needed=no
+ fi
+ ;;
+ esac
+ ;;
+ *-*-solaris2*)
+ gcc_cv_ld_as_needed=no
+ ;;
+esac
])
if test x"$gcc_cv_ld_as_needed" = xyes; then
AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
