[libc++] Serialize Lit parameters to make them available to from-scratch configs

Before this patch, Lit parameters that were set as a result of CMake
options were not made available to from-scratch configs. This patch
serializes those parameters into the generated lit config file so that
they are available to all configs.

Differential Revision: https://reviews.llvm.org/D105047

Author: ldionne

libcxx/test/CMakeLists.txt

@@ -55,9 +55,6 @@ if(LIBCXX_INCLUDE_TESTS AND NOT LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX AND NOT LIB
   message(FATAL_ERROR "LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX being OFF requires LIBCXX_ENABLE_STATIC to be ON")
 endif()
 
-pythonize_bool(LIBCXX_ENABLE_EXCEPTIONS)
-pythonize_bool(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
-pythonize_bool(LIBCXX_ENABLE_RTTI)
 pythonize_bool(LIBCXX_ENABLE_SHARED)
 pythonize_bool(LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX)
 pythonize_bool(LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXXABI)
@@ -71,7 +68,6 @@ pythonize_bool(LIBCXX_HAS_ATOMIC_LIB)
 pythonize_bool(LIBCXX_HAVE_CXX_ATOMICS_WITH_LIB)
 pythonize_bool(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
 pythonize_bool(LIBCXX_DEBUG_BUILD)
-pythonize_bool(LIBCXX_ENABLE_DEBUG_MODE_SUPPORT)
 pythonize_bool(LIBCXX_ENABLE_PARALLEL_ALGORITHMS)
 
 # By default, for non-standalone builds, libcxx and libcxxabi share a library
@@ -87,6 +83,35 @@ set(LIBCXX_EXECUTOR "\\\"${Python3_EXECUTABLE}\\\" ${CMAKE_CURRENT_LIST_DIR}/../
     "Executor to use when running tests.")
 
 set(AUTO_GEN_COMMENT "## Autogenerated by libcxx configuration.\n# Do not edit!")
+set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")
+
+macro(serialize_lit_param param value)
+  string(APPEND SERIALIZED_LIT_PARAMS "config.${param} = ${value}\n")
+endmacro()
+
+if (NOT LIBCXX_ENABLE_EXCEPTIONS)
+  serialize_lit_param(enable_exceptions False)
+endif()
+
+if (NOT LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
+  serialize_lit_param(enable_experimental False)
+endif()
+
+if (NOT LIBCXX_ENABLE_RTTI)
+  serialize_lit_param(enable_rtti False)
+endif()
+
+if (NOT LIBCXX_ENABLE_DEBUG_MODE_SUPPORT)
+  serialize_lit_param(enable_debug_tests False)
+endif()
+
+if (TARGET_TRIPLE)
+  serialize_lit_param(target_triple "\"${TARGET_TRIPLE}\"")
+endif()
+
+if (LLVM_USE_SANITIZER)
+  serialize_lit_param(use_sanitizer "\"${LLVM_USE_SANITIZER}\"")
+endif()
 
 if (NOT DEFINED LIBCXX_TEST_DEPS)
   message(FATAL_ERROR "Expected LIBCXX_TEST_DEPS to be defined")

libcxx/test/configs/legacy.cfg.in

@@ -1,5 +1,7 @@
 @AUTO_GEN_COMMENT@
 
+@SERIALIZED_LIT_PARAMS@
+
 import os
 import site
 
@@ -10,18 +12,11 @@ config.libcxx_src_root          = "@LIBCXX_SOURCE_DIR@"
 config.libcxx_obj_root          = "@LIBCXX_BINARY_DIR@"
 config.cxx_library_root         = "@LIBCXX_LIBRARY_DIR@"
 config.abi_library_root         = "@LIBCXX_CXX_ABI_LIBRARY_PATH@"
-config.enable_exceptions        = @LIBCXX_ENABLE_EXCEPTIONS@
-config.enable_debug_tests       = @LIBCXX_ENABLE_DEBUG_MODE_SUPPORT@
-config.enable_experimental      = @LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY@
-config.enable_rtti              = @LIBCXX_ENABLE_RTTI@
 config.enable_shared            = @LIBCXX_LINK_TESTS_WITH_SHARED_LIBCXX@
 config.enable_32bit             = @LIBCXX_BUILD_32_BITS@
 config.cxx_abi                  = "@LIBCXX_CXX_ABI_LIBNAME@"
-config.use_sanitizer            = "@LLVM_USE_SANITIZER@"
 config.configuration_variant    = "@LIBCXX_LIT_VARIANT@"
 config.host_triple              = "@LLVM_HOST_TRIPLE@"
-if "@TARGET_TRIPLE@":
-    config.target_triple        = "@TARGET_TRIPLE@"
 config.sysroot                  = "@LIBCXX_SYSROOT@"
 config.gcc_toolchain            = "@LIBCXX_GCC_TOOLCHAIN@"
 config.generate_coverage        = @LIBCXX_GENERATE_COVERAGE@

libcxx/test/configs/libcxx-trunk-shared.cfg.in

@@ -1,11 +1,12 @@
 @AUTO_GEN_COMMENT@
 
+@SERIALIZED_LIT_PARAMS@
+
 LIBCXX_ROOT = "@LIBCXX_SOURCE_DIR@"
 INSTALL_ROOT = "@CMAKE_BINARY_DIR@"
 COMPILER = "@CMAKE_CXX_COMPILER@"
 EXEC_ROOT = "@LIBCXX_BINARY_DIR@"
 CMAKE_OSX_SYSROOT = "@CMAKE_OSX_SYSROOT@"
-TARGET_TRIPLE = "@TARGET_TRIPLE@"
 
 import os
 import pipes
@@ -23,8 +24,6 @@ config.test_source_root = os.path.join(LIBCXX_ROOT, 'test')
 config.test_format = libcxx.test.format.CxxStandardLibraryTest()
 config.recursiveExpansionLimit = 10
 config.test_exec_root = EXEC_ROOT
-if TARGET_TRIPLE:
-    config.target_triple = TARGET_TRIPLE
 
 # Configure basic substitutions
 runPy = os.path.join(LIBCXX_ROOT, 'utils', 'run.py')

libcxx/test/configs/libcxx-trunk-static.cfg.in

@@ -1,11 +1,12 @@
 @AUTO_GEN_COMMENT@
 
+@SERIALIZED_LIT_PARAMS@
+
 LIBCXX_ROOT = "@LIBCXX_SOURCE_DIR@"
 INSTALL_ROOT = "@CMAKE_BINARY_DIR@"
 COMPILER = "@CMAKE_CXX_COMPILER@"
 EXEC_ROOT = "@LIBCXX_BINARY_DIR@"
 CMAKE_OSX_SYSROOT = "@CMAKE_OSX_SYSROOT@"
-TARGET_TRIPLE = "@TARGET_TRIPLE@"
 
 import os
 import pipes
@@ -23,8 +24,6 @@ config.test_source_root = os.path.join(LIBCXX_ROOT, 'test')
 config.test_format = libcxx.test.format.CxxStandardLibraryTest()
 config.recursiveExpansionLimit = 10
 config.test_exec_root = EXEC_ROOT
-if TARGET_TRIPLE:
-    config.target_triple = TARGET_TRIPLE
 
 # Configure basic substitutions
 runPy = os.path.join(LIBCXX_ROOT, 'utils', 'run.py')

libcxxabi/test/CMakeLists.txt

@@ -41,7 +41,6 @@ pythonize_bool(LIBCXXABI_BUILD_32_BITS)
 pythonize_bool(LIBCXX_ENABLE_SHARED)
 pythonize_bool(LIBCXXABI_ENABLE_SHARED)
 pythonize_bool(LIBCXXABI_ENABLE_THREADS)
-pythonize_bool(LIBCXXABI_ENABLE_EXCEPTIONS)
 pythonize_bool(LIBCXXABI_USE_LLVM_UNWINDER)
 pythonize_bool(LIBCXXABI_USE_COMPILER_RT)
 pythonize_bool(LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
@@ -71,6 +70,26 @@ if (NOT LIBCXXABI_STANDALONE_BUILD)
 endif()
 
 set(AUTO_GEN_COMMENT "## Autogenerated by libcxxabi configuration.\n# Do not edit!")
+set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")
+
+macro(serialize_lit_param param value)
+  string(APPEND SERIALIZED_LIT_PARAMS "config.${param} = ${value}\n")
+endmacro()
+
+if (NOT LIBCXXABI_ENABLE_EXCEPTIONS)
+  serialize_lit_param(enable_exceptions False)
+endif()
+
+serialize_lit_param(enable_experimental False)
+
+if (LLVM_USE_SANITIZER)
+  serialize_lit_param(use_sanitizer "\"${LLVM_USE_SANITIZER}\"")
+endif()
+
+if (TARGET_TRIPLE)
+  serialize_lit_param(target_triple "\"${TARGET_TRIPLE}\"")
+endif()
+
 configure_lit_site_cfg(
   "${LIBCXXABI_TEST_CONFIG}"
   ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg

libcxxabi/test/lit.site.cfg.in

@@ -1,5 +1,7 @@
 @AUTO_GEN_COMMENT@
 
+@SERIALIZED_LIT_PARAMS@
+
 import os
 import site
 
@@ -16,20 +18,15 @@ config.cxx_library_root         = "@LIBCXXABI_LIBCXX_LIBRARY_PATH@"
 config.llvm_unwinder            = @LIBCXXABI_USE_LLVM_UNWINDER@
 config.builtins_library         = "@LIBCXXABI_BUILTINS_LIBRARY@"
 config.enable_threads           = @LIBCXXABI_ENABLE_THREADS@
-config.use_sanitizer            = "@LLVM_USE_SANITIZER@"
 config.enable_32bit             = @LIBCXXABI_BUILD_32_BITS@
 config.target_info              = "@LIBCXXABI_TARGET_INFO@"
 config.executor                 = "@LIBCXXABI_EXECUTOR@"
 config.libcxxabi_shared         = @LIBCXXABI_LINK_TESTS_WITH_SHARED_LIBCXXABI@
 config.enable_shared            = @LIBCXXABI_LINK_TESTS_WITH_SHARED_LIBCXX@
-config.enable_exceptions        = @LIBCXXABI_ENABLE_EXCEPTIONS@
 config.host_triple              = "@LLVM_HOST_TRIPLE@"
-if "@TARGET_TRIPLE@":
-    config.target_triple        = "@TARGET_TRIPLE@"
 config.sysroot                  = "@LIBCXXABI_SYSROOT@"
 config.gcc_toolchain            = "@LIBCXXABI_GCC_TOOLCHAIN@"
 config.cxx_ext_threads          = @LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY@
-config.enable_experimental      = False
 
 config.pstl_src_root            = "@ParallelSTL_SOURCE_DIR@" if @LIBCXX_ENABLE_PARALLEL_ALGORITHMS@ else None
 config.pstl_obj_root            = "@ParallelSTL_BINARY_DIR@" if @LIBCXX_ENABLE_PARALLEL_ALGORITHMS@ else None

libunwind/test/CMakeLists.txt

@@ -24,6 +24,22 @@ set(LIBUNWIND_EXECUTOR "${Python3_EXECUTABLE} ${LIBUNWIND_LIBCXX_PATH}/utils/run
     "Executor to use when running tests.")
 
 set(AUTO_GEN_COMMENT "## Autogenerated by libunwind configuration.\n# Do not edit!")
+set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")
+
+macro(serialize_lit_param param value)
+  string(APPEND SERIALIZED_LIT_PARAMS "config.${param} = ${value}\n")
+endmacro()
+
+serialize_lit_param(enable_experimental False)
+
+if (LLVM_USE_SANITIZER)
+  serialize_lit_param(use_sanitizer "\"${LLVM_USE_SANITIZER}\"")
+endif()
+
+if (TARGET_TRIPLE)
+  serialize_lit_param(target_triple "\"${TARGET_TRIPLE}\"")
+endif()
+
 configure_lit_site_cfg(
   "${LIBUNWIND_TEST_CONFIG}"
   ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg

libunwind/test/libunwind/test/config.py

@@ -45,7 +45,7 @@ def configure_compile_flags(self):
         self.cxx.compile_flags += ['-funwind-tables']
         # Make symbols available in the tests.
         triple = self.get_lit_conf('target_triple', None)
-        if 'linux' in triple:
+        if triple is not None and 'linux' in triple:
             self.cxx.link_flags += ['-Wl,--export-dynamic']
         if not self.get_lit_bool('enable_threads', True):
             self.cxx.compile_flags += ['-D_LIBUNWIND_HAS_NO_THREADS']

libunwind/test/lit.site.cfg.in

@@ -1,5 +1,7 @@
 @AUTO_GEN_COMMENT@
 
+@SERIALIZED_LIT_PARAMS@
+
 import os
 import site
 
@@ -14,7 +16,6 @@ config.cxx_library_root         = "@LIBUNWIND_LIBCXX_LIBRARY_PATH@"
 config.llvm_unwinder            = True
 config.builtins_library         = "@LIBUNWIND_BUILTINS_LIBRARY@"
 config.enable_threads           = @LIBUNWIND_ENABLE_THREADS@
-config.use_sanitizer            = "@LLVM_USE_SANITIZER@"
 config.enable_32bit             = @LIBUNWIND_BUILD_32_BITS@
 config.target_info              = "@LIBUNWIND_TARGET_INFO@"
 config.test_linker_flags        = "@LIBUNWIND_TEST_LINKER_FLAGS@"
@@ -24,12 +25,9 @@ config.libunwind_shared         = @LIBUNWIND_ENABLE_SHARED@
 config.enable_shared            = @LIBCXX_ENABLE_SHARED@
 config.arm_ehabi                = @LIBUNWIND_USES_ARM_EHABI@
 config.host_triple              = "@LLVM_HOST_TRIPLE@"
-if "@TARGET_TRIPLE@":
-    config.target_triple        = "@TARGET_TRIPLE@"
 config.sysroot                  = "@LIBUNWIND_SYSROOT@"
 config.gcc_toolchain            = "@LIBUNWIND_GCC_TOOLCHAIN@"
 config.cxx_ext_threads          = @LIBUNWIND_BUILD_EXTERNAL_THREAD_LIBRARY@
-config.enable_experimental      = False
 
 site.addsitedir(os.path.join(config.libunwind_src_root, 'test'))
 site.addsitedir(os.path.join(config.libcxx_src_root, 'utils'))