[clang] 1d8fc08 - [clang][lit] Allow test cases to use the compiler that are used to compile Clang

[Balazs Benics via cfe-commits]

Author: Ella Ma
Date: 2021-03-24T11:32:57+01:00
New Revision: 1d8fc086ae26a1f973b25387b5063f1e801dc0f7

URL: https://github.com/llvm/llvm-project/commit/1d8fc086ae26a1f973b25387b5063f1e801dc0f7
DIFF: https://github.com/llvm/llvm-project/commit/1d8fc086ae26a1f973b25387b5063f1e801dc0f7.diff

LOG: [clang][lit] Allow test cases to use the compiler that are used to compile Clang

Required by D83660.
Test cases may want to use the host compiler to compile some mocks for the
test case.

This patch adds two substitutions `%host_cc` and `%host_cxx` to use the host
compilers set via variable `CMAKE_C_COMPILER` and `CMAKE_CXX_COMPILER`.

Patch by Ella Ma!

Reviewed By: steakhal

Differential Revision: https://reviews.llvm.org/D98918

Added: 
    

Modified: 
    clang/test/lit.cfg.py
    clang/test/lit.site.cfg.py.in

Removed: 
    


################################################################################
diff  --git a/clang/test/lit.cfg.py b/clang/test/lit.cfg.py
index 863ab444fb02..f9f49d7d2278 100644
--- a/clang/test/lit.cfg.py
+++ b/clang/test/lit.cfg.py
@@ -92,6 +92,9 @@
     ('%hmaptool', "'%s' %s" % (config.python_executable,
                              os.path.join(config.clang_tools_dir, 'hmaptool'))))
 
+config.substitutions.append(('%host_cc', config.host_cc))
+config.substitutions.append(('%host_cxx', config.host_cxx))
+
 
 # Plugins (loadable modules)
 if config.has_plugins and config.llvm_plugin_ext:

diff  --git a/clang/test/lit.site.cfg.py.in b/clang/test/lit.site.cfg.py.in
index c3382e2c1c42..85526b9d30d6 100644
--- a/clang/test/lit.site.cfg.py.in
+++ b/clang/test/lit.site.cfg.py.in
@@ -15,6 +15,7 @@ config.clang_src_dir = path(r"@CLANG_SOURCE_DIR@")
 config.clang_tools_dir = path(r"@CLANG_TOOLS_DIR@")
 config.host_triple = "@LLVM_HOST_TRIPLE@"
 config.target_triple = "@TARGET_TRIPLE@"
+config.host_cc = "@CMAKE_C_COMPILER@"
 config.host_cxx = "@CMAKE_CXX_COMPILER@"
 config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@"
 config.have_zlib = @LLVM_ENABLE_ZLIB@