testrunner.py/Windows: Add Clang to the path

It is required for shiboken's ApiExtractor tests.

Move subroutine detectClang into utils.py
for usage by testrunner.py/setup.py.

Task-number: PYSIDE-431
Change-Id: I9f1984ea9fc9857ad3e7fddf621884fdc96ef52f
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/utils.py b/utils.py
index 3de8fa7f8..568d06712 100644
--- a/utils.py
+++ b/utils.py
@@ -640,3 +640,21 @@ def osx_localize_libpaths(libpath, local_libs, enc_path=None):
     if need_rpath and enc_path not in osx_get_rpaths(libpath):
         back_tick('install_name_tool -add_rpath {epa} {lipa}'.format(
                   epa=enc_path, lipa=libpath ))
+
+# Add Clang to path for Windows for the shiboken ApiExtractor tests.
+# Revisit once Clang is bundled with Qt.
+def detectClang():
+    source = 'LLVM_INSTALL_DIR'
+    clangDir = os.environ.get(source, None)
+    if not clangDir:
+        source = 'CLANG_INSTALL_DIR'
+        clangDir = os.environ.get(source, None)
+        if not clangDir:
+            source = 'llvm-config'
+            try:
+                output = run_process_output([source, '--prefix'])
+                if output:
+                    clangDir = output[0]
+            except OSError:
+                pass
+    return (clangDir, source)