diff --git a/SD_CARD/BaS_gcc/Makefile b/SD_CARD/BaS_gcc/Makefile
index f1a25d9..374bb6c 100644
--- a/SD_CARD/BaS_gcc/Makefile
+++ b/SD_CARD/BaS_gcc/Makefile
@@ -32,6 +32,7 @@ CFLAGS=-mcpu=5474\
 	   -Wall\
 	   -g\
 	   -Wno-multichar\
+	   -Winline\
 	   -Os\
 	   -fomit-frame-pointer\
 	   -fno-strict-aliasing\
diff --git a/SD_CARD/BaS_gcc/include/wait.h b/SD_CARD/BaS_gcc/include/wait.h
index 8735bab..ba8c81b 100644
--- a/SD_CARD/BaS_gcc/include/wait.h
+++ b/SD_CARD/BaS_gcc/include/wait.h
@@ -29,8 +29,31 @@
 
 #include <bas_types.h>
 
-extern inline void wait(uint32_t us);
-extern inline uint32_t waitfor(uint32_t us, uint32_t (*condition)(void));
+/*
+ * wait for the specified number of us on slice timer 0. Replaces the original routines that had
+ * the number of useconds to wait for hardcoded in their name.
+ */
+extern __inline__ void wait(uint32_t us)
+{
+	uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
 
+	while (MCF_SLT_SCNT(0) > target);
+}
 
+/*
+ * the same as above, with a checker function which gets called while
+ * busy waiting and allows for an early return if it returns true
+ */
+extern __inline__ uint32_t waitfor(uint32_t us, uint32_t (*condition)(void))
+{
+	uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
+	uint32_t res;
+
+	do
+	{
+		if ((res = (*condition)()))
+			return res;
+	} while (MCF_SLT_SCNT(0) > target);
+	return 0;
+}
 #endif /* _WAIT_H_ */
diff --git a/SD_CARD/BaS_gcc/sources/wait.c b/SD_CARD/BaS_gcc/sources/wait.c
index 11b6895..dad5970 100644
--- a/SD_CARD/BaS_gcc/sources/wait.c
+++ b/SD_CARD/BaS_gcc/sources/wait.c
@@ -30,30 +30,4 @@
 
 #include <wait.h>
 
-/*
- * wait for the specified number of us on slice timer 0. Replaces the original routines that had
- * the number of useconds to wait for hardcoded in their name.
- */
-inline void wait(uint32_t us)
-{
-	uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
 
-	while (MCF_SLT_SCNT(0) > target);
-}
-
-/*
- * the same as above, with a checker function which gets called while
- * busy waiting and allows for an early return if it returns true
- */
-inline uint32_t waitfor(uint32_t us, uint32_t (*condition)(void))
-{
-	uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
-	uint32_t res;
-
-	do
-	{
-		if ((res = (*condition)()))
-			return res;
-	} while (MCF_SLT_SCNT(0) > target);
-	return 0;
-}