Remove unnecessary capture groups.

diff --git a/bin/blhc b/bin/blhc
index d6fb8511e47cb5abaccd18f2ad63ad509db60bea..f2e7295f3c79c34dd65f413fa7a0c09a4644692b 100755 (executable)
--- a/bin/blhc
+++ b/bin/blhc
@@ -181,10 +181,10 @@ my @def_cppflags_fortify = (
 );
 my @def_ldflags = ();
 my @def_ldflags_relro = (
-    '-Wl,(-z,)?relro',
+    '-Wl,(?:-z,)?relro',
 );
 my @def_ldflags_bindnow = (
-    '-Wl,(-z,)?now',
+    '-Wl,(?:-z,)?now',
 );
 my @def_ldflags_pie = (
     '-fPIE',
@@ -199,8 +199,8 @@ my @def_ldflags_pic = (
 # stores string values of flag regexps above, see compile_flag_regexp().
 my %flag_renames = (
     '-O(?:2|3)'       => '-O2',
-    '-Wl,(-z,)?relro' => '-Wl,-z,relro',
-    '-Wl,(-z,)?now'   => '-Wl,-z,now',
+    '-Wl,(?:-z,)?relro' => '-Wl,-z,relro',
+    '-Wl,(?:-z,)?now'   => '-Wl,-z,now',
 );
 
 my %exit_code = (