i8 print test + $if mac => $if macos

vlib/builtin/int_test.v

@@ -75,6 +75,16 @@ fn test_and() {
 	assert c[4] & 1 != 0
 }
 
+fn test_i8_print() {
+	b := i8(0)
+	println(b)
+	c := i16(7)
+	println(c)
+	d := u16(6)
+	println(d)
+	assert true
+}
+
 /*
 fn test_cmp() {
 	assert 1 ≠ 2

vlib/compiler/cgen.v

@@ -289,6 +289,7 @@ fn os_name_to_ifdef(name string) string {
 	match name {
 		'windows' { return '_WIN32' }
 		'mac' { return '__APPLE__' }
+		'macos' { return '__APPLE__' }
 		'linux' { return '__linux__' }
 		'freebsd' { return '__FreeBSD__' }
 		'openbsd'{  return '__OpenBSD__' }

vlib/compiler/comptime.v

@@ -23,6 +23,9 @@ fn (p mut Parser) comp_time() {
 		p.fspace()
 		if name in supported_platforms {
 			ifdef_name := os_name_to_ifdef(name)
+			if name == 'mac' {
+				p.warn('use `macos` instead of `mac`')
+			}
 			if not {
 				p.genln('#ifndef $ifdef_name')
 			}

vlib/compiler/main.v

@@ -25,8 +25,8 @@ enum BuildMode {
 }
 
 const (
-	supported_platforms = ['windows', 'mac', 'linux', 'freebsd', 'openbsd',
-		'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku']
+	supported_platforms = ['windows', 'mac', 'macos', 'linux', 'freebsd',
+	'openbsd', 'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku']
 )
 
 enum OS {
@@ -1141,6 +1141,7 @@ pub fn os_from_string(os string) OS {
 		'linux' { return .linux}
 		'windows' { return .windows}
 		'mac' { return .mac}
+		'macos' { return .mac}
 		'freebsd' { return .freebsd}
 		'openbsd' { return .openbsd}
 		'netbsd' { return .netbsd}