[libFuzzer] Properly configure tests for Windows.

This configuration is necessary, and is included in all tests suites.
We need to execute: `config.test_format = lit.formats.ShTest(False)`
Otherwise, lit will try to use bash, which generates many problems.

Differential Revision: https://reviews.llvm.org/D29529

llvm-svn: 294380

1 files changed, 17 insertions, 0 deletions

diff --git a/llvm/lib/Fuzzer/test/lit.cfg b/llvm/lib/Fuzzer/test/lit.cfg
index c3e7c3835d0..55391b8f483 100644
--- a/llvm/lib/Fuzzer/test/lit.cfg
+++ b/llvm/lib/Fuzzer/test/lit.cfg
@@ -6,6 +6,23 @@ config.test_format = lit.formats.ShTest(True)
 config.suffixes = ['.test']
 config.test_source_root = os.path.dirname(__file__)
 
+# Choose between lit's internal shell pipeline runner and a real shell.  If
+# LIT_USE_INTERNAL_SHELL is in the environment, we use that as an override.
+use_lit_shell = os.environ.get("LIT_USE_INTERNAL_SHELL")
+if use_lit_shell:
+    # 0 is external, "" is default, and everything else is internal.
+    execute_external = (use_lit_shell == "0")
+else:
+    # Otherwise we default to internal on Windows and external elsewhere, as
+    # bash on Windows is usually very slow.
+    execute_external = (not sys.platform in ['win32'])
+
+# testFormat: The test format to use to interpret tests.
+#
+# For now we require '&&' between commands, until they get globally killed and
+# the test runner updated.
+config.test_format = lit.formats.ShTest(execute_external)
+
 # Tweak PATH to include llvm tools dir and current exec dir.
 llvm_tools_dir = getattr(config, 'llvm_tools_dir', None)
 if (not llvm_tools_dir) or (not os.path.exists(llvm_tools_dir)):