diff --git a/tools/Makefile b/tools/Makefile
index d663fb0a..9e9c9cc2 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -1,6 +1,10 @@
 CC := gcc
 CXX := g++
+ifeq ($(OSX_BUILD),1)
+CFLAGS := -I../include -I. -Wall -Wextra -Wno-unused-parameter -pedantic -std=c99 -O2 -s -Wno-error=implicit-function-declaration
+else
 CFLAGS := -I../include -I. -Wall -Wextra -Wno-unused-parameter -pedantic -std=c99 -O2 -s
+endif
 LDFLAGS := -lm
 PROGRAMS := n64graphics n64graphics_ci mio0 n64cksum textconv patch_libultra_math aifc_decode aiff_extract_codebook vadpcm_enc tabledesign extract_data_for_mio skyconv