m4/md_conf_debugging.m4 | 8 ++++----

 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/m4/md_conf_debugging.m4 b/m4/md_conf_debugging.m4

index b42d8b2..1b5a6b7 100644

--- a/m4/md_conf_debugging.m4

+++ b/m4/md_conf_debugging.m4

@@ -1,13 +1,13 @@

 AC_DEFUN([MD_CONF_DEBUGGING],

   [

-    CFLAGS=$(echo $CFLAGS | sed -e 's,-g[[^[:space:]]]*,,g')

-    CXXFLAGS=$(echo $CXXFLAGS | sed -e 's,-g[[^[:space:]]]*,,g')

+    CFLAGS=$(echo $CFLAGS | sed -e 's,\(^\| \)-g[[^[:space:]]]*,,g')

+    CXXFLAGS=$(echo $CXXFLAGS | sed -e 's,\(^\| \)-g[[^[:space:]]]*,,g')

     MD_CHECK_ARG_ENABLE(debug,

       [

         DEBUG_FLAG=-g

         MD_CHECK_ARG_ENABLE(gdbdebug, [DEBUG_FLAG='-g3 -ggdb'])

-        CFLAGS="$(echo $CFLAGS | sed -e 's,-O[[[:digit:]]]*,,g') -O0"

-        CXXFLAGS="$(echo $CXXFLAGS | sed -e 's,-O[[[:digit:]]]*,,g') -O0"

+        CFLAGS="$(echo $CFLAGS | sed -e 's,\(^\| \)-O[[[:digit:]]]*,,g') -O0"

+        CXXFLAGS="$(echo $CXXFLAGS | sed -e 's,\(^\| \)-O[[[:digit:]]]*,,g') -O0"

         CFLAGS="$CFLAGS $DEBUG_FLAG"

         CXXFLAGS="$CXXFLAGS $DEBUG_FLAG"

       ],