diff --git a/bin/compiler/includes/functions.sh b/bin/compiler/includes/functions.sh
index 1f30ba756..d8fe078b9 100644
--- a/bin/compiler/includes/functions.sh
+++ b/bin/compiler/includes/functions.sh
@@ -31,7 +31,7 @@ function configure() {
   cmake $SRCPATH -DCMAKE_INSTALL_PREFIX=$BINPATH -DCONF_DIR=$CONFDIR -DSERVERS=$CSERVERS \
   -DSCRIPTS=$CSCRIPTS \
   -DTOOLS=$CTOOLS -DUSE_SCRIPTPCH=$CSCRIPTPCH -DUSE_COREPCH=$CCOREPCH -DWITH_COREDEBUG=$CDEBUG  -DCMAKE_BUILD_TYPE=$CTYPE -DWITH_WARNINGS=$CWARNINGS \
-  -DCMAKE_C_COMPILER=$CCOMPILERC -DCMAKE_CXX_COMPILER=$CCOMPILERCXX
+  -DCMAKE_C_COMPILER=$CCOMPILERC -DCMAKE_CXX_COMPILER=$CCOMPILERCXX $CCUSTOMOPTIONS
 
   cd $CWD
 
diff --git a/conf/config.sh.dist b/conf/config.sh.dist
index 88b99d2fd..f14fe7887 100644
--- a/conf/config.sh.dist
+++ b/conf/config.sh.dist
@@ -42,6 +42,8 @@ CTOOLS=0
 # use precompiled headers ( fatest compilation but not optimized if you change headers often )
 CSCRIPTPCH=1
 CCOREPCH=1
+# you can add your custom definitions here ( -D )
+CCUSTOMOPTIONS=""
 
 ##############################################
 #