diff --git a/amiga/gcc_aos3.cfg b/amiga/gcc_aos3.cfg
index db3c4837..1b103c99 100644
--- a/amiga/gcc_aos3.cfg
+++ b/amiga/gcc_aos3.cfg
@@ -1,14 +1,18 @@
 # makefile fragment for m68k-amigaos / gcc
 
-#CRT_FLAGS = -mcrt=clib2
-CRT_FLAGS = -noixemul
+### build against clib2:
+CRT_FLAGS = -mcrt=clib2
+CFLAGS += -DHAVE_STDINT_H
+
+### build against libnix:
+#CRT_FLAGS = -noixemul
+#INCLUDE+= -I../include/stdint
+# avoid conflicts between our stdint.h and ixemul sys/types.h
+#CFLAGS += -D_ANSI_SOURCE
 
 CFLAGS += $(CRT_FLAGS)
 LDFLAGS+= $(CRT_FLAGS)
 
-INCLUDE+= -I../include/stdint
 LDFLAGS+= -lm
 CFLAGS += -DWORDS_BIGENDIAN=1
 
-# avoid conflicts between our stdint.h and ixemul sys/types.h
-CFLAGS += -D_ANSI_SOURCE
diff --git a/amiga/gcc_aos4.cfg b/amiga/gcc_aos4.cfg
index 2964e813..95f3625c 100644
--- a/amiga/gcc_aos4.cfg
+++ b/amiga/gcc_aos4.cfg
@@ -1,7 +1,6 @@
 # makefile fragment for ppc-amigaos4 / gcc
 
 #CRT_FLAGS = -mcrt=clib2
-#CRT_FLAGS = -noixemul
 CRT_FLAGS = -mcrt=newlib
 
 CFLAGS += $(CRT_FLAGS)