MacOSX: The universal build requires that users have the MacOSX10.4u SDK
installed to build extensions. This patch makes distutils emit a warning when
the compiler should use an SDK but that SDK is not installed, hopefully reducing
some confusion.
diff --git a/Lib/distutils/unixccompiler.py b/Lib/distutils/unixccompiler.py
index 6cd14f7..d1fd1d9 100644
--- a/Lib/distutils/unixccompiler.py
+++ b/Lib/distutils/unixccompiler.py
@@ -82,6 +82,22 @@
except ValueError:
pass
+ # Check if the SDK that is used during compilation actually exists,
+ # the universal build requires the usage of a universal SDK and not all
+ # users have that installed by default.
+ sysroot = None
+ if '-isysroot' in cc_args:
+ idx = cc_args.index('-isysroot')
+ sysroot = cc_args[idx+1]
+ elif '-isysroot' in compiler_so:
+ idx = compiler_so.index('-isysroot')
+ sysroot = compiler_so[idx+1]
+
+ if sysroot and not os.path.isdir(sysroot):
+ log.warn("Compiling with an SDK that doesn't seem to exist: %s",
+ sysroot)
+ log.warn("Please check your Xcode installation")
+
return compiler_so
class UnixCCompiler(CCompiler):