3 files changed, 54 insertions, 8 deletions
diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
index 437e3d93e4..0538a81771 100644
--- a/mkspecs/features/mac/default_post.prf
+++ b/mkspecs/features/mac/default_post.prf
@@ -16,6 +16,14 @@ qt:!isEmpty(QT_CONFIG) {
     }
 }
 
+isEmpty(_QMAKE_CACHE_) {
+    warning("No .qmake.cache is present. This significantly slows down qmake with this makespec.")
+    warning("Call 'cache()' in the top-level project file to rectify this problem.")
+} else {
+    cache(QMAKE_XCODE_DEVELOPER_PATH)
+    cache(QMAKE_XCODE_VERSION)
+}
+
 # Ensure that we process sdk.prf first, as it will update QMAKE_CXX
 # and friends that other features/extra compilers may depend on.
 sdk: load(sdk)
diff --git a/mkspecs/features/mac/default_pre.prf b/mkspecs/features/mac/default_pre.prf
index 81e1d061f8..e535c4d9e9 100644
--- a/mkspecs/features/mac/default_pre.prf
+++ b/mkspecs/features/mac/default_pre.prf
@@ -1,3 +1,25 @@
 CONFIG = sdk rez $$CONFIG
 load(default_pre)
 
+isEmpty(QMAKE_XCODE_DEVELOPER_PATH) {
+    # Get path of Xcode's Developer directory
+    QMAKE_XCODE_DEVELOPER_PATH = $$system("/usr/bin/xcode-select --print-path 2>/dev/null")
+    isEmpty(QMAKE_XCODE_DEVELOPER_PATH): \
+        error("Xcode path is not set. Please use xcode-select to choose Xcode installation path.")
+
+    # Make sure Xcode path is valid
+    !exists($$QMAKE_XCODE_DEVELOPER_PATH): \
+        error("Xcode is not installed in $${QMAKE_XCODE_DEVELOPER_PATH}. Please use xcode-select to choose Xcode installation path.")
+
+    # Make sure Xcode is set up properly
+    isEmpty($$list($$system("/usr/bin/xcrun -find xcrun 2>/dev/null"))): \
+        error("Xcode not set up properly. You may need to confirm the license agreement by running /usr/bin/xcodebuild.")
+}
+
+isEmpty(QMAKE_XCODE_VERSION) {
+    # Extract Xcode version using xcodebuild
+    xcode_version = $$system("/usr/bin/xcodebuild -version")
+    QMAKE_XCODE_VERSION = $$member(xcode_version, 1)
+    isEmpty(QMAKE_XCODE_VERSION): error("Could not resolve Xcode version.")
+    unset(xcode_version)
+}
diff --git a/mkspecs/features/mac/sdk.prf b/mkspecs/features/mac/sdk.prf
index f5b1639a5d..0da0b65d41 100644
--- a/mkspecs/features/mac/sdk.prf
+++ b/mkspecs/features/mac/sdk.prf
@@ -5,8 +5,13 @@ isEmpty(QMAKE_MAC_SDK): \
 contains(QMAKE_MAC_SDK, .*/.*): \
     error("QMAKE_MAC_SDK can only contain short-form SDK names (eg. macosx, iphoneos)")
 
-QMAKE_MAC_SDK_PATH = $$system("/usr/bin/xcodebuild -sdk $$QMAKE_MAC_SDK -version Path 2>/dev/null")
-isEmpty(QMAKE_MAC_SDK_PATH): error("Could not resolve SDK path for \'$$QMAKE_MAC_SDK\'")
+isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.path) {
+    QMAKE_MAC_SDK_PATH = $$system("/usr/bin/xcodebuild -sdk $$QMAKE_MAC_SDK -version Path 2>/dev/null")
+    isEmpty(QMAKE_MAC_SDK_PATH): error("Could not resolve SDK path for \'$$QMAKE_MAC_SDK\'")
+    !isEmpty(_QMAKE_CACHE_): cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.path, set, QMAKE_MAC_SDK_PATH)
+} else {
+    QMAKE_MAC_SDK_PATH = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.path)
+}
 
 !equals(MAKEFILE_GENERATOR, XCODE) {
     QMAKE_CFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH
@@ -21,6 +26,11 @@ QMAKE_INCDIR_OPENGL = $$sysrootified
 
 # Resolve SDK version of various tools
 for(tool, $$list(QMAKE_CC QMAKE_CXX QMAKE_FIX_RPATH QMAKE_AR QMAKE_RANLIB QMAKE_LINK QMAKE_LINK_SHLIB)) {
+    !isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.$${tool}) {
+        $$tool = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.$${tool})
+        next()
+    }
+
     value = $$eval($$tool)
     isEmpty(value): next()
 
@@ -28,15 +38,21 @@ for(tool, $$list(QMAKE_CC QMAKE_CXX QMAKE_FIX_RPATH QMAKE_AR QMAKE_RANLIB QMAKE_
     isEmpty(sysrooted): next()
 
     $$tool = $$sysrooted $$member(value, 1, -1)
+    !isEmpty(_QMAKE_CACHE_): cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.$${tool}, set, $$tool)
 }
 
-# We use xml as the output format instead of json since plutil on 10.6 does not have that option
-QMAKE_MAC_PLATFORM_NAME = $$system("/usr/bin/plutil -convert xml1 \"$$QMAKE_MAC_SDK_PATH/SDKSettings.plist\" -o - 2>/dev/null | " \
-    "sed '/^<!DOCTYPE/d' | " \ # Don't look up http://www.apple.com/DTDs/PropertyList-1.0.dtd
-    "PERL5LIB= xpath 'string(//key[.=\"PLATFORM_NAME\"]/following-sibling::*[1])' 2>/dev/null | " \
-    "sed 's/.*Value: \\(.*\\)/\\1/'")
+isEmpty(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_name) {
+    # We use xml as the output format instead of json since plutil on 10.6 does not have that option
+    QMAKE_MAC_PLATFORM_NAME = $$system("/usr/bin/plutil -convert xml1 \"$$QMAKE_MAC_SDK_PATH/SDKSettings.plist\" -o - 2>/dev/null | " \
+        "sed '/^<!DOCTYPE/d' | " \ # Don't look up http://www.apple.com/DTDs/PropertyList-1.0.dtd
+        "PERL5LIB= xpath 'string(//key[.=\"PLATFORM_NAME\"]/following-sibling::*[1])' 2>/dev/null | " \
+        "sed 's/.*Value: \\(.*\\)/\\1/'")
 
-isEmpty(QMAKE_MAC_PLATFORM_NAME): error("Could not resolve platform name for SDK '$$QMAKE_MAC_SDK'")
+    isEmpty(QMAKE_MAC_PLATFORM_NAME): error("Could not resolve platform name for SDK '$$QMAKE_MAC_SDK'")
+    !isEmpty(_QMAKE_CACHE_): cache(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_name, set, QMAKE_MAC_PLATFORM_NAME)
+} else {
+    QMAKE_MAC_PLATFORM_NAME = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.platform_name)
+}
 
 !equals(MAKEFILE_GENERATOR, XCODE) {
     # FIXME: Get the version_min_flag out of the platform's 'Native Build System.xcspec'