--- libnsbmp-0.1.2/Makefile
+++ libnsbmp-0.1.2/Makefile
@@ -14,10 +14,7 @@
 	-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes \
 	-Wmissing-declarations -Wnested-externs -pedantic
 # BeOS/Haiku standard library headers create warnings
-ifneq ($(BUILD),i586-pc-haiku)
-  WARNFLAGS := $(WARNFLAGS) -Werror
-endif
-CFLAGS := -D_BSD_SOURCE -I$(CURDIR)/include/ \
+CFLAGS := -D_DEFAULT_SOURCE -I$(CURDIR)/include/ \
 	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS)
 ifneq ($(GCCVER),2)
   CFLAGS := $(CFLAGS) -std=c99