libiberty: Disable hwcaps for sha1.o

This patch

commit bf4f40cc31
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.

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.

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.

libiberty/Makefile.in

@@ -114,7 +114,7 @@ INCDIR=$(srcdir)/$(MULTISRCTOP)../include
 
 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):

libiberty/aclocal.m4

@@ -16,7 +16,9 @@ m4_include([../config/acx.m4])
 m4_include([../config/cet.m4])
 m4_include([../config/enable.m4])
 m4_include([../config/gcc-plugin.m4])
+m4_include([../config/hwcaps.m4])
 m4_include([../config/no-executables.m4])
+m4_include([../config/override.m4])
 m4_include([../config/picflag.m4])
 m4_include([../config/warnings.m4])
 m4_include([acinclude.m4])

libiberty/configure

@@ -626,6 +626,11 @@ pexecute
 target_header_dir
 CHECK
 LIBOBJS
+HWCAP_CFLAGS
+target_os
+target_vendor
+target_cpu
+target
 CET_HOST_FLAGS
 NOASANFLAG
 PICFLAG
@@ -1325,6 +1330,7 @@ _ACEOF
 System types:
   --build=BUILD     configure for building on BUILD [guessed]
   --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+  --target=TARGET   configure for building compilers for TARGET [HOST]
 _ACEOF
 fi
 
@@ -2462,6 +2468,9 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+
+
+
 # This works around the fact that libtool configuration may change LD
 # for this particular configuration, but some shells, instead of
 # keeping the changes in LD private, export them just because LD is
@@ -5631,6 +5640,88 @@ LDFLAGS="$cet_save_LDFLAGS"
 
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking target system type" >&5
+$as_echo_n "checking target system type... " >&6; }
+if ${ac_cv_target+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$target_alias" = x; then
+  ac_cv_target=$ac_cv_host
+else
+  ac_cv_target=`$SHELL "$ac_aux_dir/config.sub" $target_alias` ||
+    as_fn_error $? "$SHELL $ac_aux_dir/config.sub $target_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_target" >&5
+$as_echo "$ac_cv_target" >&6; }
+case $ac_cv_target in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical target" "$LINENO" 5;;
+esac
+target=$ac_cv_target
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_target
+shift
+target_cpu=$1
+target_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+target_os=$*
+IFS=$ac_save_IFS
+case $target_os in *\ *) target_os=`echo "$target_os" | sed 's/ /-/g'`;; esac
+
+
+# The aliases save the names the user supplied, while $host etc.
+# will get canonicalized.
+test -n "$target_alias" &&
+  test "$program_prefix$program_suffix$program_transform_name" = \
+    NONENONEs,x,x, &&
+  program_prefix=${target_alias}-
+
+  test -z "$HWCAP_CFLAGS" && HWCAP_CFLAGS=''
+
+
+  # Restrict the test to Solaris, other assemblers (e.g. AIX as) have -nH
+  # with a different meaning.
+  case ${target_os} in
+    solaris2*)
+      ac_save_CFLAGS="$CFLAGS"
+      CFLAGS="$CFLAGS -Wa,-nH"
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for as that supports -Wa,-nH" >&5
+$as_echo_n "checking for as that supports -Wa,-nH... " >&6; }
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_hwcap_flags=yes
+else
+  ac_hwcap_flags=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+      if test "$ac_hwcap_flags" = "yes"; then
+	HWCAP_CFLAGS="-Wa,-nH $HWCAP_CFLAGS"
+      fi
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_hwcap_flags" >&5
+$as_echo "$ac_hwcap_flags" >&6; }
+
+      CFLAGS="$ac_save_CFLAGS"
+      ;;
+  esac
+
+
+
+
 echo "# Warning: this fragment is automatically generated" > temp-frag
 
 if [ -n "${frag}" ] && [ -f "${frag}" ]; then

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