diff --git a/qmake.build/compiler_config.pri b/qmake.build/compiler_config.pri
index 36ad93c..848956d 100644
--- a/qmake.build/compiler_config.pri
+++ b/qmake.build/compiler_config.pri
@@ -13,6 +13,9 @@ else {
 
 CONFIG(warn_on) {
   *-g++*:QMAKE_CXXFLAGS *= -Wextra
+  GCC_CFLAGS = -Wextra -fstrict-aliasing -Wstrict-aliasing -Wcast-align -Wlogical-op -Wfloat-equal
+  *-g++*:QMAKE_CFLAGS_DEBUG   *= $$GCC_CFLAGS
+  *-g++*:QMAKE_CFLAGS_RELEASE *= $$GCC_CFLAGS
 }
 
 win32-msvc20*:QMAKE_CXXFLAGS *= -wd4996 -wd4290 -wd4503