Index: tools/travis.sh
===================================================================
--- tools/travis.sh	(revision fb08c470e2d36513bc2233dcd370c9400e2d42a1)
+++ tools/travis.sh	(revision 40b7fd3cd75fc6b419fef547e00e1cf0b62437b7)
@@ -82,4 +82,14 @@
 fi
 
+# C style check
+if [ -n "$H_CCHECK" ]; then
+    echo "Will try to run C style check."
+    echo
+    rm -rf tools/sycek
+    make ccheck || exit 1
+    echo "C style check passed."
+    exit 0
+fi
+
 # Check HelenOS configuration was set-up
 if [ -z "$H_ARCH" ]; then
@@ -97,5 +107,7 @@
 
 # Custom CROSS_PREFIX
-export CROSS_PREFIX=/usr/local/cross-static/
+if [ ."$CROSS_PREFIX" == . ]; then
+	export CROSS_PREFIX=/usr/local/cross-static/
+fi
 
 # Default Harbours repository
@@ -114,4 +126,8 @@
     echo "export H_HARBOURS=true"
     echo "export H_HARBOUR_LIST=\"$H_DEFAULT_HARBOURS_LIST\""
+    echo
+    echo "or"
+    echo
+    echo "export H_CCHECK=true"
     echo
     exit 0