[cmake] Add an option to prefer public SDK in find_darwin_sdk_dir
Adds a CMake option DARWIN_PREFER_PUBLIC_SDK, off by default. When on, this prefers to use the public SDK, even when an internal one is present. With this, it's easy to emulate a build that the public buildbots are doing.
Differential Revision: https://reviews.llvm.org/D35071
llvm-svn: 307330
diff --git a/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake b/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
index baea4a0..1837908 100644
--- a/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
+++ b/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
@@ -4,14 +4,17 @@
# set the default Xcode to use. This function finds the SDKs that are present in
# the current Xcode.
function(find_darwin_sdk_dir var sdk_name)
- # Let's first try the internal SDK, otherwise use the public SDK.
- execute_process(
- COMMAND xcodebuild -version -sdk ${sdk_name}.internal Path
- RESULT_VARIABLE result_process
- OUTPUT_VARIABLE var_internal
- OUTPUT_STRIP_TRAILING_WHITESPACE
- ERROR_FILE /dev/null
- )
+ set(DARWIN_PREFER_PUBLIC_SDK OFF CACHE BOOL "Prefer Darwin public SDK, even when an internal SDK is present.")
+ if(NOT DARWIN_PREFER_PUBLIC_SDK)
+ # Let's first try the internal SDK, otherwise use the public SDK.
+ execute_process(
+ COMMAND xcodebuild -version -sdk ${sdk_name}.internal Path
+ RESULT_VARIABLE result_process
+ OUTPUT_VARIABLE var_internal
+ OUTPUT_STRIP_TRAILING_WHITESPACE
+ ERROR_FILE /dev/null
+ )
+ endif()
if((NOT result_process EQUAL 0) OR "" STREQUAL "${var_internal}")
execute_process(
COMMAND xcodebuild -version -sdk ${sdk_name} Path