diff --git a/Makefile b/Makefile
index 6e2460d..5d60550 100644
--- a/Makefile
+++ b/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
diff --git a/gg.c b/gg.c
index 1b61b4c..8d95690 100644
--- a/gg.c
+++ b/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
@@ -29,7 +32,7 @@
 
 /* sysctlbyname() is the portable way to query CPU count on every BSD family
  * (FreeBSD, OpenBSD, NetBSD, DragonFly) and on macOS/Darwin. */
-#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) ||     defined(__DragonFly__) || defined(__APPLE__)
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__)
 #include <sys/sysctl.h>
 #endif
 
@@ -52,7 +55,7 @@
  * all provide it, but only expose the prototype outside strict conformance
  * mode, so declare it ourselves when the system has not already. Any libc that
  * genuinely lacks it (rare) gets a small portable fallback. */
-#if defined(__GLIBC__) || defined(__FreeBSD__) || defined(__OpenBSD__) ||     defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__)
+#if defined(__GLIBC__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__)
 #ifndef memmem
 void *memmem(const void *haystack, size_t haystacklen,
              const void *needle, size_t needlelen);
@@ -60,13 +63,13 @@ void *memmem(const void *haystack, size_t haystacklen,
 #else
 static void *gg_memmem(const void *haystack, size_t haystacklen,
                        const void *needle, size_t needlelen) {
-  if (needlelen == 0) return (void *)haystack;
-  if (haystacklen < needlelen) return NULL;
+  if(needlelen == 0) return (void *)haystack;
+  if(haystacklen < needlelen) return NULL;
   const unsigned char *h = (const unsigned char *)haystack;
   const unsigned char *n = (const unsigned char *)needle;
   const unsigned char *end = h + haystacklen - needlelen;
-  for (; h <= end; h++)
-    if (memcmp(h, n, needlelen) == 0) return (void *)h;
+  for(; h <= end; h++)
+    if(memcmp(h, n, needlelen) == 0) return (void *)h;
   return NULL;
 }
 #define memmem gg_memmem
@@ -76,15 +79,15 @@ static void *gg_memmem(const void *haystack, size_t haystacklen,
 static long gg_nproc(void) {
 #if defined(_SC_NPROCESSORS_ONLN)
   long n = sysconf(_SC_NPROCESSORS_ONLN);
-  if (n > 0) return n;
+  if(n > 0) return n;
 #elif defined(_SC_NPROCESSORS_CONF)
   long n = sysconf(_SC_NPROCESSORS_CONF);
-  if (n > 0) return n;
+  if(n > 0) return n;
 #endif
 #if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) ||     defined(__DragonFly__) || defined(__APPLE__)
   int ncpu = 1;
   size_t len = sizeof(ncpu);
-  if (sysctlbyname("hw.ncpu", &ncpu, &len, NULL, 0) == 0 && ncpu > 0)
+  if(sysctlbyname("hw.ncpu", &ncpu, &len, NULL, 0) == 0 && ncpu > 0)
     return (long)ncpu;
 #endif
   return 1;