diff --git a/supportlibs/pegmarkdown/pegmarkdown.pro b/supportlibs/pegmarkdown/pegmarkdown.pro
index 9ae9d594c..3894d92fb 100644
--- a/supportlibs/pegmarkdown/pegmarkdown.pro
+++ b/supportlibs/pegmarkdown/pegmarkdown.pro
@@ -2,28 +2,19 @@ TEMPLATE = lib
 CONFIG += staticlib
 CONFIG -= qt
 TARGET = pegmarkdown
-QMAKE_CXXFLAGS *= -Wall
-QMAKE_CFLAGS *= -Wall
 
-profiling {
-	QMAKE_CXXFLAGS -= -fomit-frame-pointer
-	QMAKE_CXXFLAGS *= -pg -g -fno-omit-frame-pointer
-}
-
-release {
-	# not much here yet.
-}
+QMAKE_CFLAGS *= -Wall -ansi  -D_GNU_SOURCE
+QMAKE_CC = gcc
 
 #CONFIG += debug
 debug {
-        QMAKE_CXXFLAGS -= -O2 -fomit-frame-pointer
-        QMAKE_CXXFLAGS *= -g -fno-omit-frame-pointer
+        QMAKE_CFLAGS -= -O2 
+        QMAKE_CFLAGS *= -g 
 }
 
 ################################# Linux ##########################################
 linux-* {
 	DESTDIR = lib
-	QMAKE_CC = g++
 }
 
 linux-g++ {
@@ -44,11 +35,8 @@ win32 {
 
 		# Switch on extra warnings
 		QMAKE_CFLAGS += -Wextra
-		QMAKE_CXXFLAGS += -Wextra
 
 		# Switch off optimization for release version
-		QMAKE_CXXFLAGS_RELEASE -= -O2
-		QMAKE_CXXFLAGS_RELEASE += -O0
 		QMAKE_CFLAGS_RELEASE -= -O2
 		QMAKE_CFLAGS_RELEASE += -O0
 
@@ -58,7 +46,6 @@ win32 {
 ################################# MacOSX ##########################################
 
 mac {
-		QMAKE_CC = g++
 		OBJECTS_DIR = temp/obj
 		MOC_DIR = temp/moc
 		DESTDIR = lib