lit.cfg: Pass -isysroot to the SDK on Darwin

Newly-built Clangs don't automatically find the SDK, and newer versions
of Mac OS X don't provide it under /usr/include etc.

llvm-svn: 258169

1 files changed, 11 insertions, 0 deletions

diff --git a/openmp/runtime/test/lit.cfg b/openmp/runtime/test/lit.cfg
index 2f258eff748..e6d446757be 100644
--- a/openmp/runtime/test/lit.cfg
+++ b/openmp/runtime/test/lit.cfg
@@ -2,6 +2,7 @@
 # Configuration file for the 'lit' test runner.
 
 import os
+import subprocess
 import lit.formats
 
 # Tell pylint that we know config and lit_config exist somewhere.
@@ -57,6 +58,16 @@ if config.operating_system == 'Darwin':
     if config.using_hwloc:
         config.test_cflags += " -Wl,-rpath," + config.hwloc_library_dir
 
+# Find the SDK on Darwin
+if config.operating_system == 'Darwin':
+  cmd = subprocess.Popen(['xcrun', '--show-sdk-path'],
+                         stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+  out, err = cmd.communicate()
+  out = out.strip()
+  res = cmd.wait()
+  if res == 0 and out:
+    config.test_cflags += " -isysroot " + out
+
 # substitutions
 config.substitutions.append(("%libomp-compile-and-run", \
     "%clang %cflags %s -o %t -lm && %t"))