[PATCH] config, aarch64: Use a more compatible sed invocation.

[Iain Sandoe <iains.gcc@gmail.com>]

Although this came up initially when working on the Darwin Arm64
port, it also breaks cross-compilers on platforms with non-GNU sed.

Tested on x86_64-darwin X aarch64-linux-gnu, aarch64-darwin,
aarch64-linux-gnu and x86_64-linux-gnu.  OK for master?
thanks,
Iain

--- 8< ---

Currently, the sed command used to parse --with-{cpu,tune,arch} are
using GNU-specific extension to the -e (recognising extended regex).

This is failing on Darwin, which defaults to Posix behaviour for -e.
However '-E' is accepted to indicate an extended RE.  Strictly, this
is also not really sufficient, since we should only require a Posix
sed (but it seems supported for BSD-derivatives).

gcc/ChangeLog:

	* config.gcc: Use -E to to sed to indicate that we are using
	extended REs.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
---
 gcc/config.gcc | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 606d3a8513e..a7216907261 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4199,8 +4199,8 @@ case "${target}" in
 		fi
 		for which in cpu arch tune; do
 			eval "val=\$with_$which"
-			base_val=`echo $val | sed -e 's/\+.*//'`
-			ext_val=`echo $val | sed -e 's/[a-z0-9.-]\+//'`
+			base_val=`echo $val | sed -E 's/\+.*//'`
+			ext_val=`echo $val | sed -E 's/[a-z0-9.-]+//'`
 
 			if [ $which = arch ]; then
 			  def=aarch64-arches.def
@@ -4232,9 +4232,9 @@ case "${target}" in
 
 			  while [ x"$ext_val" != x ]
 			  do
-				ext_val=`echo $ext_val | sed -e 's/\+//'`
-				ext=`echo $ext_val | sed -e 's/\+.*//'`
-				base_ext=`echo $ext | sed -e 's/^no//'`
+				ext_val=`echo $ext_val | sed -E 's/\+//'`
+				ext=`echo $ext_val | sed -E 's/\+.*//'`
+				base_ext=`echo $ext | sed -E 's/^no//'`
 				opt_line=`echo -e "$options_parsed" | \
 					grep "^\"$base_ext\""`
 
@@ -4245,7 +4245,7 @@ case "${target}" in
 				  echo "Unknown extension used in --with-$which=$val" 1>&2
 				  exit 1
 				fi
-				ext_val=`echo $ext_val | sed -e 's/[a-z0-9]\+//'`
+				ext_val=`echo $ext_val | sed -E 's/[a-z0-9]+//'`
 			  done
 
 			  true
-- 
2.39.2 (Apple Git-143)