[libcxxabi] Disable cxa_thread_atexit_test if unavailable

[Hahnfeld]

Summary

The feature check is already in place when building the library but wasn't honored for the tests.

[EricWF]

LGTM after the inline question is addressed.

test/libcxxabi/test/config.py

38

I would rather default this value to True. Would this break in your case?

[Hahnfeld]

test/libcxxabi/test/config.py

38

Not when running all tests from make or directly with llvm-lit and relative directories. But it would break when starting llvm-lit with an absolute path because it then takes the default configuration. I won't ever do that though because I know that this test doesn't work with my version of glibc ;-)

Will change and commit tomorrow, thanks!

test/CMakeLists.txt

 macro(pythonize_bool var)
   if (${var})
     set(${var} True)
   else()
     set(${var} False)
   endif()
 endmacro()
 
 pythonize_bool(LLVM_BUILD_32_BITS)
 pythonize_bool(LIBCXXABI_ENABLE_SHARED)
 pythonize_bool(LIBCXXABI_ENABLE_THREADS)
 pythonize_bool(LIBCXXABI_USE_LLVM_UNWINDER)
+pythonize_bool(LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL)
 set(LIBCXXABI_TARGET_INFO "libcxx.test.target_info.LocalTI" CACHE STRING
     "TargetInfo to use when setting up test environment.")
 set(LIBCXXABI_EXECUTOR "None" CACHE STRING
     "Executor to use when running tests.")
 
 set(AUTO_GEN_COMMENT "## Autogenerated by libcxxabi configuration.\n# Do not edit!")
 configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in

test/cxa_thread_atexit_test.pass.cpp

 //===--------------------- cxa_thread_atexit_test.cpp ---------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is dual licensed under the MIT and the University of Illinois Open
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: linux
+// REQUIRES: thread_atexit
 
 #include <assert.h>
 #include <cxxabi.h>
 
 static bool AtexitImplCalled = false;
 
 extern "C" int __cxa_thread_atexit_impl(void (*dtor)(void *), void *obj,
                                         void *dso_symbol) {

test/libcxxabi/test/config.py

def configure_src_root(self):
         self.libcxx_src_root = self.get_lit_conf(
             'libcxx_src_root',
             os.path.join(self.libcxxabi_src_root, '/../libcxx'))
 
     def configure_obj_root(self):
         self.libcxxabi_obj_root = self.get_lit_conf('libcxxabi_obj_root')
         super(Configuration, self).configure_obj_root()
 
+    def configure_features(self):
+        super(Configuration, self).configure_features()
+        if self.get_lit_bool('thread_atexit', False):
+            self.config.available_features.add('thread_atexit')
+
     def configure_compile_flags(self):
         self.cxx.compile_flags += ['-DLIBCXXABI_NO_TIMER']
         self.cxx.compile_flags += ['-funwind-tables']
         if not self.get_lit_bool('enable_threads', True):
             self.cxx.compile_flags += ['-DLIBCXXABI_HAS_NO_THREADS=1']
         super(Configuration, self).configure_compile_flags()    
     
     def configure_compile_flags_header_includes(self):

test/lit.site.cfg.in

 @AUTO_GEN_COMMENT@
 config.cxx_under_test           = "@LIBCXXABI_COMPILER@"
 config.project_obj_root         = "@CMAKE_BINARY_DIR@"
 config.libcxxabi_src_root       = "@LIBCXXABI_SOURCE_DIR@"
 config.libcxxabi_obj_root       = "@LIBCXXABI_BINARY_DIR@"
 config.abi_library_path         = "@LIBCXXABI_LIBRARY_DIR@"
 config.libcxx_src_root          = "@LIBCXXABI_LIBCXX_PATH@"
 config.cxx_headers              = "@LIBCXXABI_LIBCXX_INCLUDES@"
 config.cxx_library_root         = "@LIBCXXABI_LIBCXX_LIBRARY_PATH@"
 config.llvm_unwinder            = "@LIBCXXABI_USE_LLVM_UNWINDER@"
 config.enable_threads           = "@LIBCXXABI_ENABLE_THREADS@"
 config.use_sanitizer            = "@LLVM_USE_SANITIZER@"
 config.enable_32bit             = "@LLVM_BUILD_32_BITS@"
 config.target_info              = "@LIBCXXABI_TARGET_INFO@"
 config.executor                 = "@LIBCXXABI_EXECUTOR@"
+config.thread_atexit            = "@LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL@"
 
 # Let the main config do the real work.
 lit_config.load_config(config, "@LIBCXXABI_SOURCE_DIR@/test/lit.cfg")