Source

baseten / common-xcconfig / gc.xcconfig

// Set the deployment target to 10.4 since the resulting library
// might even work with non-gc applications on 10.4. Garbage collection
// seems to require 10.5 SDK though.
GCC_ENABLE_OBJC_GC = supported
MACOSX_DEPLOYMENT_TARGET_ppc = 10.4
MACOSX_DEPLOYMENT_TARGET_i386 = 10.4
MACOSX_DEPLOYMENT_TARGET_ppc64 = 10.5
MACOSX_DEPLOYMENT_TARGET_x86_64 = 10.5
SDKROOT_ppc = /Developer/SDKs/MacOSX10.5.sdk
SDKROOT_i386 = /Developer/SDKs/MacOSX10.5.sdk
SDKROOT_ppc64 = /Developer/SDKs/MacOSX10.5.sdk
SDKROOT_x86_64 = /Developer/SDKs/MacOSX10.5.sdk