diff --git a/include/ck_cc.h b/include/ck_cc.h
index b588616..e17dc7b 100644
--- a/include/ck_cc.h
+++ b/include/ck_cc.h
@@ -36,6 +36,14 @@
 #define CK_CC_RESTRICT
 #endif
 
+#ifndef CK_CC_INLINE
+#define CK_CC_INLINE inline
+#endif
+
+#ifndef CK_CC_FORCE_INLINE
+#define CK_CC_FORCE_INLINE inline
+#endif
+
 #define CK_CC_DECONST_PTR(X) ((void *)(uintptr_t)(X))
 
 /*
diff --git a/include/gcc/ck_cc.h b/include/gcc/ck_cc.h
index 481a314..6806130 100644
--- a/include/gcc/ck_cc.h
+++ b/include/gcc/ck_cc.h
@@ -48,15 +48,13 @@
 #endif /* __x86_64__ || __x86__ */
 #endif
 
-/*
- * If optimizations are turned on, then force inlining.
- */
 #ifdef __OPTIMIZE__
 #define CK_CC_INLINE CK_CC_UNUSED inline
 #else
 #define CK_CC_INLINE CK_CC_UNUSED
 #endif
 
+#define CK_CC_FORCE_INLINE CK_CC_UNUSED __attribute__((always_inline)) inline
 #define CK_CC_RESTRICT restrict
 
 /*