Makefile: Add CFLAGS to the "test_main.c" compile target

Also, add the <string.h> include to test_main.c, in order to
suppress the resulting "implicit declaration of strcmp()" warning.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Andreas Ericsson <ae@op5.se>

Makefile

@@ -135,7 +135,7 @@ $(TEST_OBJ): tests/%.o: tests/%.c
 $(patsubst %.exe,%_main.o,$(TEST_EXE)): tests/%_main.o: $(HDRS)
 $(patsubst %.exe,%_main.o,$(TEST_EXE)): tests/%_main.o: $(T_MAIN_C)
 $(patsubst %.exe,%_main.o,$(TEST_EXE)): tests/%_main.o: tests/%.toc
-	$(CC) -Isrc -I. '-DTEST_TOC="$<"' \
+	$(CC) $(CFLAGS) -Isrc -I. '-DTEST_TOC="$<"' \
 		-c $(T_MAIN_C) \
 		-o $@
 

tests/test_main.c

@@ -24,6 +24,7 @@
  */
 
 #include "test_lib.h"
+#include <string.h>
 
 #undef BEGIN_TEST
 #define BEGIN_TEST(name) extern void testfunc__##name(void);