configure: fix non-standard regex used with expr

[ffmpeg] / configure

diff --git a/configure b/configure
index 7b9c5a4952e24bc727a9e21f9925dbb8d38ba41e..7af0e850dfe6366de747c0f330137146d99d8a27 100755 (executable)
--- a/configure
+++ b/configure
@@ -1868,7 +1868,7 @@ elif $cc -v 2>&1 | grep -qi ^gcc; then
     cc_version=__VERSION__
     gcc_version=$($cc --version | head -n1)
     gcc_basever=$($cc -dumpversion)
-    gcc_pkg_ver=$(expr "$gcc_version" : '^[^ ]* \(([^)]*)\)')
+    gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
     if ! $cc -dumpversion | grep -q '^2\.'; then