[glibc] powerpc64: Fix by using the configure value $libc_cv_cc_submachine [BZ #31629]

[Peter Bergner <bergner@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a81cdde1cb9d514fc8f014ddf21771c96ff2c182

commit a81cdde1cb9d514fc8f014ddf21771c96ff2c182
Author: Manjunath Matti <mmatti@linux.ibm.com>
Date:   Thu May 16 17:24:36 2024 -0500

    powerpc64: Fix by using the configure value $libc_cv_cc_submachine [BZ #31629]
    
    This patch ensures that $libc_cv_cc_submachine, which is set from
    "--with-cpu", overrides $CFLAGS for configure time tests.
    
    Suggested-by: Peter Bergner <bergner@linux.ibm.com>
    Reviewed-by: Peter Bergner <bergner@linux.ibm.com>

Diff:
---
 sysdeps/powerpc/powerpc64/configure    | 4 ++--
 sysdeps/powerpc/powerpc64/configure.ac | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sysdeps/powerpc/powerpc64/configure b/sysdeps/powerpc/powerpc64/configure
index 6d8153ed50..9df2ceaa1f 100644
--- a/sysdeps/powerpc/powerpc64/configure
+++ b/sysdeps/powerpc/powerpc64/configure
@@ -12,7 +12,7 @@ then :
 else $as_nop
   libc_cv_overlapping_opd=no
 echo 'void foo (void) {}' > conftest.c
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&5'
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $libc_cv_cc_submachine -S conftest.c -o conftest.s 1>&5'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -51,7 +51,7 @@ int bar (void);
 int foo (void) { return bar () + 1; }
 EOF
   libc_cv_ppc64_notoc=no
-  if { ac_try='${CC-cc} $libc_cv_cc_submachine $CFLAGS $CPPFLAGS -S -o conftest.s conftest.c'
+  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $libc_cv_cc_submachine -S -o conftest.s conftest.c'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
diff --git a/sysdeps/powerpc/powerpc64/configure.ac b/sysdeps/powerpc/powerpc64/configure.ac
index 575745af3e..225d66ef1a 100644
--- a/sysdeps/powerpc/powerpc64/configure.ac
+++ b/sysdeps/powerpc/powerpc64/configure.ac
@@ -7,7 +7,7 @@ AC_CACHE_CHECK(for support for overlapping .opd entries,
 libc_cv_overlapping_opd, [dnl
 libc_cv_overlapping_opd=no
 echo 'void foo (void) {}' > conftest.c
-if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
+if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $libc_cv_cc_submachine -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
 changequote(,)dnl
   if grep '\.TOC\.@tocbase' conftest.s > /dev/null; then
     if grep '\.TOC\.@tocbase[ 	]*,[ 	]*0' conftest.s > /dev/null; then
@@ -35,7 +35,7 @@ int bar (void);
 int foo (void) { return bar () + 1; }
 EOF
   libc_cv_ppc64_notoc=no
-  if AC_TRY_COMMAND([${CC-cc} $libc_cv_cc_submachine $CFLAGS $CPPFLAGS -S -o conftest.s conftest.c]) \
+  if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $libc_cv_cc_submachine -S -o conftest.s conftest.c]) \
      && AC_TRY_COMMAND([grep -q -E 'bar@notoc' conftest.s])
   then
     libc_cv_ppc64_notoc=yes