[PATCH] libiberty: Disable hwcaps for sha1.o

[Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>]

[-- Attachment #1: Type: text/plain, Size: 1728 bytes --]

This patch

commit bf4f40cc3195eb7b900bf5535cdba1ee51fdbb8e
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Nov 28 13:14:05 2023 +0100

    libiberty: Use x86 HW optimized sha1

broke Solaris/x86 bootstrap with the native as:

libtool: compile:  /var/gcc/regression/master/11.4-gcc/build/./gcc/gccgo -B/var/gcc/regression/master/11.4-gcc/build/./gcc/ -B/vol/gcc/i386-pc-solaris2.11/bin/ -B/vol/gcc/i386-pc-solaris2.11/lib/ -isystem /vol/gcc/i386-pc-solaris2.11/include -isystem /vol/gcc/i386-pc-solaris2.11/sys-include -fchecking=1 -minline-all-stringops -O2 -g -I . -c -fgo-pkgpath=internal/goarch /vol/gcc/src/hg/master/local/libgo/go/internal/goarch/goarch.go zgoarch.go
ld.so.1: go1: fatal: /var/gcc/regression/master/11.4-gcc/build/gcc/go1: hardware capability (CA_SUNW_HW_2) unsupported: 0x4000000  [ SHA1 ]
gccgo: fatal error: Killed signal terminated program go1

As is already done in a couple of other similar cases, this patches
disables hwcaps support for libiberty.

Initially, this didn't work because config/hwcaps.m4 uses target_os, but
didn't ensure it is defined.

Tested on i386-pc-solaris2.11 with as and gas (gcc build completed, make
check still running).  binutils-gdb build is currently broken in
gdb/procfs.c, unfortunately.

Ok for both gcc and binutils?

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University


2023-11-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	config:
	* hwcaps.m4 (GCC_CHECK_ASSEMBLER_HWCAP): Require
	AC_CANONICAL_TARGET.

	libiberty:
	* configure.ac (GCC_CHECK_ASSEMBLER_HWCAP): Invoke.
	* configure, aclocal.m4: Regenerate.
	* Makefile.in (COMPILE.c): Add HWCAP_CFLAGS.


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: libiberty-sha1-no-hwcaps.patch --]
[-- Type: text/x-patch, Size: 1354 bytes --]

# HG changeset patch
# Parent  fd492da0442de0bcc8afbf1aa71957f3e05afdb7
libiberty: Disable hwcaps for sha1.o

diff --git a/config/hwcaps.m4 b/config/hwcaps.m4
--- a/config/hwcaps.m4
+++ b/config/hwcaps.m4
@@ -7,6 +7,7 @@ dnl  HWCAP_CFLAGS='-Wa,-nH' if possible.
 dnl
 AC_DEFUN([GCC_CHECK_ASSEMBLER_HWCAP], [
   test -z "$HWCAP_CFLAGS" && HWCAP_CFLAGS=''
+  AC_REQUIRE([AC_CANONICAL_TARGET])
 
   # Restrict the test to Solaris, other assemblers (e.g. AIX as) have -nH
   # with a different meaning.
diff --git a/libiberty/Makefile.in b/libiberty/Makefile.in
--- a/libiberty/Makefile.in
+++ b/libiberty/Makefile.in
@@ -114,7 +114,7 @@ INCDIR=$(srcdir)/$(MULTISRCTOP)../includ
 
 COMPILE.c = $(CC) -c @DEFS@ $(CFLAGS) $(CPPFLAGS) -I. -I$(INCDIR) \
                $(HDEFINES) @ac_libiberty_warn_cflags@ -D_GNU_SOURCE \
-               @CET_HOST_FLAGS@
+               @CET_HOST_FLAGS@ @HWCAP_CFLAGS@
 
 # Just to make sure we don't use a built-in rule with VPATH
 .c.$(objext):
diff --git a/libiberty/configure.ac b/libiberty/configure.ac
--- a/libiberty/configure.ac
+++ b/libiberty/configure.ac
@@ -265,6 +265,8 @@ AC_SUBST(NOASANFLAG)
 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
 AC_SUBST(CET_HOST_FLAGS)
 
+GCC_CHECK_ASSEMBLER_HWCAP
+
 echo "# Warning: this fragment is automatically generated" > temp-frag
 
 if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then