--- a/configure
+++ b/configure
@@ -149,7 +149,7 @@ createVariables()
 		configuration="Release_gcc_unicode"
 		ext=u
 		debug_flag=""
-		optimization=" -O3 -DREGEXP_UNICODE "
+		optimization=" -DREGEXP_UNICODE ${CFLAGS} "
         # In release builds, unless otherwise instructed, tell wx to disable asserts
         asserts="-DNDEBUG"
         if [ "$asserts_specified" = "on" ]; then
@@ -353,7 +353,7 @@ createCodeLiteCppcheckMakefile ()
 	else
 		configuration="Release"
 		debug_flag=""
-		optimization=" -O2 "
+		optimization="${CFLAGS}"
         # In release builds, unless otherwise instructed, tell wx to disable asserts
         asserts="-DNDEBUG"
         if [ "$asserts_specified" = "on" ]; then
@@ -448,7 +448,7 @@ createCodeLiteClangMakefile()
 	else
 		configuration="Release"
 		debug_flag=""
-		optimization=" -O2 "
+		optimization="${CFLAGS}"
         # In release builds, unless otherwise instructed, tell wx to disable asserts
         asserts="-DNDEBUG"
         if [ "$asserts_specified" = "on" ]; then
@@ -559,7 +559,7 @@ createCodeLiteGCCMakefile ()
 	else
 		configuration="Release"
 		debug_flag=""
-		optimization=" -O2 "
+		optimization="${CFLAGS}"
         # In release builds, unless otherwise instructed, tell wx to disable asserts
         asserts="-DNDEBUG"
         if [ "$asserts_specified" = "on" ]; then
@@ -672,7 +672,7 @@ createCodeLiteIndexerMakefile ()
 	else
 		configuration="Release"
 		debug_flag=""
-		optimization=" -O2 "
+		optimization="${CFLAGS}"
         # In release builds, unless otherwise instructed, tell wx to disable asserts
         asserts="-DNDEBUG"
         if [ "$asserts_specified" = "on" ]; then