Adjust bfd/warning.m4 egrep patterns

Adjust the `bfd/warning.m4` `egrep` patterns to handle preprocessors
that do not define `__GNUC__`, leaving the string in the output.

bfd/
	* warning.m4: Adjust egrep pattern for non-GNU compilers.
	* configure: Regenerate.
binutils/
	* configure: Regenerate.
gas/
	* configure: Regenerate.
gold/
	* configure: Regenerate.
gprof/
	* configure: Regenerate.
ld/
	* configure: Regenerate.
opcodes/
	* configure: Regenerate.

3 files changed, 15 insertions, 10 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 3b24c23..f394db2 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,8 @@
+2019-01-09  Andrew Paprocki  <andrew@ishiboo.com>
+
+	* warning.m4: Adjust egrep pattern for non-GNU compilers.
+	* configure: Regenerate.
+
 2019-01-08  Alan Modra  <amodra@gmail.com>
 
 	PR 23699
diff --git a/bfd/configure b/bfd/configure
index dae6e1f..1796068 100755
--- a/bfd/configure
+++ b/bfd/configure
@@ -12583,7 +12583,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 __GNUC__
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "^[0-3]$" >/dev/null 2>&1; then :
+  $EGREP "(^[0-3]$|^__GNUC__$)" >/dev/null 2>&1; then :
 
 else
   GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow"
@@ -12597,7 +12597,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 __GNUC__
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "^[0-4]$" >/dev/null 2>&1; then :
+  $EGREP "(^[0-4]$|^__GNUC__$)" >/dev/null 2>&1; then :
 
 else
   GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144"
@@ -12612,7 +12612,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 __GNUC__
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "^[0-3]$" >/dev/null 2>&1; then :
+  $EGREP "(^[0-3]$|^__GNUC__$)" >/dev/null 2>&1; then :
 
 else
   WARN_WRITE_STRINGS="-Wwrite-strings"
@@ -12628,7 +12628,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 __GNUC__
 _ACEOF
 if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 |
-  $EGREP "^[0-3]$" >/dev/null 2>&1; then :
+  $EGREP "(^[0-3]$|^__GNUC__$)" >/dev/null 2>&1; then :
 
 else
   GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wshadow"
@@ -12642,7 +12642,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 __GNUC__
 _ACEOF
 if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 |
-  $EGREP "^[0-4]$" >/dev/null 2>&1; then :
+  $EGREP "(^[0-4]$|^__GNUC__$)" >/dev/null 2>&1; then :
 
 else
   GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144"
diff --git a/bfd/warning.m4 b/bfd/warning.m4
index 50f400b..8b0a342 100644
--- a/bfd/warning.m4
+++ b/bfd/warning.m4
@@ -47,22 +47,22 @@ GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
 GCC_WARN_CFLAGS_FOR_BUILD="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
 
 # Add -Wshadow if the compiler is a sufficiently recent version of GCC.
-AC_EGREP_CPP([^[0-3]$],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow")
+AC_EGREP_CPP([(^[0-3]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow")
 
 # Add -Wstack-usage if the compiler is a sufficiently recent version of GCC.
-AC_EGREP_CPP([^[0-4]$],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144")
+AC_EGREP_CPP([(^[0-4]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144")
 
 # Set WARN_WRITE_STRINGS if the compiler supports -Wwrite-strings.
 WARN_WRITE_STRINGS=""
-AC_EGREP_CPP([^[0-3]$],[__GNUC__],,WARN_WRITE_STRINGS="-Wwrite-strings")
+AC_EGREP_CPP([(^[0-3]$|^__GNUC__$)],[__GNUC__],,WARN_WRITE_STRINGS="-Wwrite-strings")
 
 # Verify CC_FOR_BUILD to be compatible with warning flags
 
 # Add -Wshadow if the compiler is a sufficiently recent version of GCC.
-AC_EGREP_CPP_FOR_BUILD([^[0-3]$],[__GNUC__],,GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wshadow")
+AC_EGREP_CPP_FOR_BUILD([(^[0-3]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wshadow")
 
 # Add -Wstack-usage if the compiler is a sufficiently recent version of GCC.
-AC_EGREP_CPP_FOR_BUILD([^[0-4]$],[__GNUC__],,GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144")
+AC_EGREP_CPP_FOR_BUILD([(^[0-4]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144")
 
 AC_ARG_ENABLE(werror,
   [  --enable-werror         treat compile warnings as errors],