From e83c83807d4042a23d473cbdb4d39c2d79b873ca Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Tue, 20 Aug 2024 10:56:59 -0700
Subject: [PATCH] build: improve compiler version detection portability

POSIX sed doesn't support extended regular expressions, so convert a
call to the basic format. This caused a problem on AIX. Also, use the
detected sed binary name instead of hard-coding one.
---
 m4/curl-compilers.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index 0fde2f9455..3890d536c4 100644
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -185,7 +185,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_GNU_C], [
     compiler_id="GNU_C"
     AC_MSG_CHECKING([compiler version])
     # strip '-suffix' parts, e.g. Ubuntu Windows cross-gcc returns '10-win32'
-    gccver=`$CC -dumpversion | sed -E 's/-.+$//'`
+    gccver=`$CC -dumpversion | "$SED" 's/-.\{1,\}$//'`
     gccvhi=`echo $gccver | cut -d . -f1`
     if echo $gccver | grep -F '.' >/dev/null; then
       gccvlo=`echo $gccver | cut -d . -f2`