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Xcode: Find fallback SDK if one matching the OS version doesn't exist. 

For example if one installs Xcode 4.6 on OS X 10.9, it doesn't contain
a 10.9 SDK, so fallback to the next newest version which, in this case,
happens to be a 10.8 SDK.

This fixes bug #14572.
This commit is contained in:
Clinton Stimpson 2014-04-29 22:46:18 -06:00
parent 0cce556b5f
commit 5dfe9b7d5a
1 changed files with 29 additions and 14 deletions
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43
Modules/Platform/Darwin-Initialize.cmake
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@ -66,24 +66,39 @@ elseif("${CMAKE_GENERATOR}" MATCHES Xcode
# specially named SDKs.
set(_CMAKE_OSX_SDKS_VER_SUFFIX_10.4 "u")
set(_CMAKE_OSX_SDKS_VER_SUFFIX_10.3 ".9")
if(CMAKE_OSX_DEPLOYMENT_TARGET)
set(_CMAKE_OSX_SDKS_VER ${CMAKE_OSX_DEPLOYMENT_TARGET}${_CMAKE_OSX_SDKS_VER_SUFFIX_${CMAKE_OSX_DEPLOYMENT_TARGET}})
# find the latest SDK
set(_CMAKE_OSX_LATEST_SDK_VERSION "0.0")
file(GLOB _CMAKE_OSX_SDKS RELATIVE "${_CMAKE_OSX_SDKS_DIR}" "${_CMAKE_OSX_SDKS_DIR}/MacOSX*.sdk")
foreach(_SDK ${_CMAKE_OSX_SDKS})
if(_SDK MATCHES "MacOSX([0-9]+\\.[0-9]+)[^/]*\\.sdk" AND CMAKE_MATCH_1 VERSION_GREATER ${_CMAKE_OSX_LATEST_SDK_VERSION})
set(_CMAKE_OSX_LATEST_SDK_VERSION "${CMAKE_MATCH_1}")
endif()
endforeach()
# pick an SDK that works
set(_CMAKE_OSX_SYSROOT_DEFAULT)
foreach(ver ${CMAKE_OSX_DEPLOYMENT_TARGET}
${_CURRENT_OSX_VERSION}
${_CMAKE_OSX_LATEST_SDK_VERSION})
set(_CMAKE_OSX_DEPLOYMENT_TARGET ${ver})
set(_CMAKE_OSX_SDKS_VER ${_CMAKE_OSX_DEPLOYMENT_TARGET}${_CMAKE_OSX_SDKS_VER_SUFFIX_${_CMAKE_OSX_DEPLOYMENT_TARGET}})
set(_CMAKE_OSX_SYSROOT_CHECK "${_CMAKE_OSX_SDKS_DIR}/MacOSX${_CMAKE_OSX_SDKS_VER}.sdk")
if(IS_DIRECTORY "${_CMAKE_OSX_SYSROOT_CHECK}")
set(_CMAKE_OSX_SYSROOT_DEFAULT "${_CMAKE_OSX_SYSROOT_CHECK}")
else()
set(_CMAKE_OSX_SDKS_VER ${_CURRENT_OSX_VERSION}${_CMAKE_OSX_SDKS_VER_SUFFIX_${_CURRENT_OSX_VERSION}})
set(_CMAKE_OSX_SYSROOT_DEFAULT "${_CMAKE_OSX_SDKS_DIR}/MacOSX${_CMAKE_OSX_SDKS_VER}.sdk")
message(WARNING
"CMAKE_OSX_DEPLOYMENT_TARGET is '${CMAKE_OSX_DEPLOYMENT_TARGET}' "
"but the matching SDK does not exist at:\n \"${_CMAKE_OSX_SYSROOT_CHECK}\"\n"
"Instead using SDK:\n \"${_CMAKE_OSX_SYSROOT_DEFAULT}\"\n"
"matching the host OS X version."
)
break()
endif()
else()
set(_CMAKE_OSX_SDKS_VER ${_CURRENT_OSX_VERSION}${_CMAKE_OSX_SDKS_VER_SUFFIX_${_CURRENT_OSX_VERSION}})
set(_CMAKE_OSX_SYSROOT_DEFAULT "${_CMAKE_OSX_SDKS_DIR}/MacOSX${_CMAKE_OSX_SDKS_VER}.sdk")
endforeach()
if(CMAKE_OSX_DEPLOYMENT_TARGET AND
NOT CMAKE_OSX_DEPLOYMENT_TARGET VERSION_EQUAL ${_CMAKE_OSX_DEPLOYMENT_TARGET})
set(_CMAKE_OSX_SDKS_VER ${CMAKE_OSX_DEPLOYMENT_TARGET}${_CMAKE_OSX_SDKS_VER_SUFFIX_${CMAKE_OSX_DEPLOYMENT_TARGET}})
set(_CMAKE_OSX_SYSROOT_CHECK "${_CMAKE_OSX_SDKS_DIR}/MacOSX${_CMAKE_OSX_SDKS_VER}.sdk")
message(WARNING
"CMAKE_OSX_DEPLOYMENT_TARGET is '${CMAKE_OSX_DEPLOYMENT_TARGET}' "
"but the matching SDK does not exist at:\n \"${_CMAKE_OSX_SYSROOT_CHECK}\"\n"
"Instead using SDK:\n \"${_CMAKE_OSX_SYSROOT_DEFAULT}\"."
)
endif()
else()
# Assume developer files are in root (such as Xcode 4.5 command-line tools).