Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -1577,18 +1577,31 @@
 ])
 CHECK_BUILTIN_BSWAP(16)
 CHECK_BUILTIN_BSWAP(32)
 CHECK_BUILTIN_BSWAP(64)
 
-case "$host" in
-	arm*-apple-darwin*)
-		have_processes="no"
+case "$host_os" in
+	darwin*)
+		AC_MSG_CHECKING(whether we are compiling for macOS)
+		AC_EGREP_CPP(egrep_cpp_yes, [
+			#include <TargetConditionals.h>
+
+			#if defined(TARGET_OS_MAC) && TARGET_OS_MAC
+			egrep_cpp_yes
+			#endif
+		], [
+			AC_MSG_RESULT(yes)
+			have_processes="yes"
+		], [
+			AC_MSG_RESULT(no)
+			have_processes="no"
+		])
 		;;
-	*-*-mingw*)
+	mingw*)
 		have_processes="yes"
 		;;
-	*-*-msdosdjgpp*)
+	msdosdjgpp*)
 		have_processes="no"
 		;;
 	*)
 		AC_HEADER_SYS_WAIT
 		AC_CHECK_FUNCS(kill)

Index: src/platform.h
==================================================================
--- src/platform.h
+++ src/platform.h
@@ -103,11 +103,12 @@
 #if defined(__APPLE__)
 # include <TargetConditionals.h>
 # if (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) || \
     (defined(TARGET_OS_SIMULATOR) && TARGET_OS_SIMULATOR)
 #  define OF_IOS
-# else
+# endif
+# if defined(TARGET_OS_MAC) && TARGET_OS_MAC
 #  define OF_MACOS
 # endif
 #elif defined(__linux__)
 # define OF_LINUX
 #elif defined(_WIN32)