fixed macos build too

Makefile

@@ -9,9 +9,6 @@ CFLAGS  ?= -O2 -s -std=c11 -Wall -Wextra -march=native
 CPPFLAGS += -D_POSIX_C_SOURCE=200809L -D_DEFAULT_SOURCE
 LDFLAGS ?=
 LDLIBS  += -lpthread
-# The matcher uses POSIX memmem(), which glibc accelerates with SIMD on
-# whatever CPU you run on. -mavx2 is harmless but unnecessary; drop it for
-# maximum portability (e.g. make MARCH="").
 MARCH   ?=
 
 BINARY  := gg

gg.c

@@ -6,6 +6,9 @@
  * Created by Luxferre in 2026, released into the public domain
  *
  */
+#if defined(__APPLE__) && !defined(_DARWIN_C_SOURCE)
+#define _DARWIN_C_SOURCE
+#endif
 #ifndef _POSIX_C_SOURCE
 #define _POSIX_C_SOURCE 200809L
 #endif