1# Detect Mac OS X and SDK versions.
2# Output variables:
3#   build_mac_version
4#   mac_sdk_version
5#   mac_sdk_root
6#   gcc_darwin_version
7
8ifndef build_mac_version
9
10build_mac_version := $(shell sw_vers -productVersion)
11
12mac_sdk_versions_supported :=  10.6 10.7 10.8 10.9
13ifneq ($(strip $(MAC_SDK_VERSION)),)
14mac_sdk_version := $(MAC_SDK_VERSION)
15ifeq ($(filter $(mac_sdk_version),$(mac_sdk_versions_supported)),)
16$(warning ****************************************************************)
17$(warning * MAC_SDK_VERSION $(MAC_SDK_VERSION) isn't one of the supported $(mac_sdk_versions_supported))
18$(warning ****************************************************************)
19$(error Stop.)
20endif
21else
22mac_sdk_versions_installed := $(shell xcodebuild -showsdks | grep macosx | sort | sed -e "s/.*macosx//g")
23mac_sdk_version := $(firstword $(filter $(mac_sdk_versions_installed), $(mac_sdk_versions_supported)))
24ifeq ($(mac_sdk_version),)
25mac_sdk_version := $(firstword $(mac_sdk_versions_supported))
26endif
27endif
28
29mac_sdk_path := $(shell xcode-select -print-path)
30# try /Applications/Xcode*.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.?.sdk
31#  or /Volume/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.?.sdk
32mac_sdk_root := $(mac_sdk_path)/Platforms/MacOSX.platform/Developer/SDKs/MacOSX$(mac_sdk_version).sdk
33ifeq ($(wildcard $(mac_sdk_root)),)
34# try legacy /Developer/SDKs/MacOSX10.?.sdk
35mac_sdk_root := /Developer/SDKs/MacOSX$(mac_sdk_version).sdk
36endif
37ifeq ($(wildcard $(mac_sdk_root)),)
38$(warning *****************************************************)
39$(warning * Can not find SDK $(mac_sdk_version) at $(mac_sdk_root))
40$(warning *****************************************************)
41$(error Stop.)
42endif
43
44ifeq ($(mac_sdk_version),10.6)
45  gcc_darwin_version := 10
46else
47  gcc_darwin_version := 11
48endif
49
50endif  # ifndef build_mac_version
51