From 4422c3a54682d1318575909857e3e9e8ae5f3b44 Mon Sep 17 00:00:00 2001
From: Ismael Dibene <imdibene@gmail.com>
Date: Thu, 23 Apr 2026 00:13:21 +0200
Subject: [PATCH] Bugfix/TODO: add support for "-std=c99",
 "-D_POSIX_C_SOURCE=200112L" for MacOS

---
 nob.h    | 7 +++++++
 shared.h | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/nob.h b/nob.h
index 2735a93..1f59842 100644
--- a/nob.h
+++ b/nob.h
@@ -166,7 +166,9 @@
 #    include <shellapi.h>
 #else
 #    ifdef __APPLE__
+#        define _DARWIN_C_SOURCE 1
 #        include <mach-o/dyld.h>
+#        include <sys/sysctl.h>
 #    endif
 #    ifdef __FreeBSD__
 #        include <sys/sysctl.h>
@@ -1226,6 +1228,11 @@ NOBDEF int nob_nprocs(void)
     SYSTEM_INFO siSysInfo;
     GetSystemInfo(&siSysInfo);
     return siSysInfo.dwNumberOfProcessors;
+#elif __APPLE__
+    int nprocs = 0;
+    size_t len = sizeof(nprocs);
+    sysctlbyname("hw.logicalcpu", &nprocs, &len, NULL, 0);
+    return nprocs;
 #else
     return sysconf(_SC_NPROCESSORS_ONLN);
 #endif
diff --git a/shared.h b/shared.h
index f3bb3e1..35c6ce3 100644
--- a/shared.h
+++ b/shared.h
@@ -23,7 +23,7 @@
     #elif defined(__APPLE__) || defined(__MACH__)
         // TODO: "-std=c99", "-D_POSIX_C_SOURCE=200112L" didn't work for MacOS, don't know why, don't really care that much at the moment.
         //   Anybody who does feel free to investigate.
-        #define nob_cc_flags(cmd) cmd_append(cmd, "-Wall", "-Wextra", "-Wswitch-enum", "-I.")
+        #define nob_cc_flags(cmd) cmd_append(cmd, "-Wall", "-Wextra", "-Wswitch-enum", "-std=c99", "-D_POSIX_C_SOURCE=200112L", "-I.")
     #elif defined(__FreeBSD__)
     // "-D_POSIX_C_SOURCE=200112L" hides required symbols on FreeBSD
         #define nob_cc_flags(cmd) cmd_append(cmd, "-Wall", "-Wextra", "-Wswitch-enum", "-std=c99", "-ggdb", "-I.");