Index: test/lit.cfg =================================================================== --- test/lit.cfg +++ test/lit.cfg @@ -252,7 +252,6 @@ self.configure_use_clang_verify() self.configure_ccache() self.configure_env() - self.configure_std_flag() self.configure_compile_flags() self.configure_link_flags() self.configure_sanitizer() @@ -450,14 +449,26 @@ self.config.available_features.add('long_tests') def configure_compile_flags(self): - # Configure extra compiler flags. + # Try and get the std version from the command line. Fall back to + # default given in lit.site.cfg is not present. If default is not + # present then force c++11. + std = self.get_lit_conf('std', 'c++11') + self.compile_flags += ['-std={0}'.format(std)] + self.config.available_features.add(std) + # Configure include paths self.compile_flags += ['-nostdinc++'] - self.compile_flags += ['-I' + self.src_root + '/include', - '-I' + self.src_root + '/test/support'] + self.compile_flags += ['-I' + self.src_root + '/test/support'] + libcxx_headers = self.get_lit_conf('libcxx_headers', + self.src_root + '/include') + if not os.path.isdir(libcxx_headers): + self.lit_config.fatal("libcxx_headers='%s' is not a directory." + % libcxx_headers) + self.compile_flags += ['-I' + libcxx_headers] if sys.platform.startswith('linux'): self.compile_flags += ['-D__STDC_FORMAT_MACROS', '-D__STDC_LIMIT_MACROS', '-D__STDC_CONSTANT_MACROS'] + # Configure feature flags. enable_exceptions = self.get_lit_bool('enable_exceptions', True) if enable_exceptions: self.config.available_features.add('exceptions') @@ -483,64 +494,70 @@ elif not enable_monotonic_clock: self.lit_config.fatal('enable_monotonic_clock cannot be false when' ' enable_threads is true.') + # Use verbose output for better errors + self.compile_flags += ['-v'] + # Configure extra compile flags. + compile_flags_str = self.get_lit_conf('compile_flags', '') + self.compile_flags += shlex.split(compile_flags_str) def configure_link_flags(self): self.link_flags += ['-nodefaultlibs'] - # Configure library search paths + libcxx_library = self.get_lit_conf('libcxx_library') + # Configure libc++ library paths. + if libcxx_library is not None: + # Check that the given value for libcxx_library is valid. + if not os.path.isfile(libcxx_library): + self.lit_config.fatal( + "libcxx_library='%s' is not a valid file." % libcxx_library) + if self.use_system_lib: + self.lit_config.fatal("Conflicting options: 'libcxx_library'" + " cannot be used with 'use_system_lib=true'") + self.link_flags += ['-Wl,-rpath,' + os.path.dirname(libcxx_library)] + elif not self.use_system_lib: + self.link_flags += ['-L' + self.library_root, + '-Wl,-rpath,' + self.library_root] + # Configure ABI library paths. abi_library_path = self.get_lit_conf('abi_library_path', '') - if not self.use_system_lib: - self.link_flags += ['-L' + self.library_root] - self.link_flags += ['-Wl,-rpath,' + self.library_root] if abi_library_path: self.link_flags += ['-L' + abi_library_path, '-Wl,-rpath,' + abi_library_path] # Configure libraries - self.link_flags += ['-lc++'] - link_flags_str = self.get_lit_conf('link_flags') - if link_flags_str is None: - cxx_abi = self.get_lit_conf('cxx_abi', 'libcxxabi') - if cxx_abi == 'libstdc++': - self.link_flags += ['-lstdc++'] - elif cxx_abi == 'libsupc++': - self.link_flags += ['-lsupc++'] - elif cxx_abi == 'libcxxabi': - self.link_flags += ['-lc++abi'] - elif cxx_abi == 'libcxxrt': - self.link_flags += ['-lcxxrt'] - elif cxx_abi == 'none': - pass - else: - self.lit_config.fatal( - 'C++ ABI setting %s unsupported for tests' % cxx_abi) - - if sys.platform == 'darwin': - self.link_flags += ['-lSystem'] - elif sys.platform.startswith('linux'): - self.link_flags += ['-lgcc_eh', '-lc', '-lm', '-lpthread', - '-lrt', '-lgcc_s'] - elif sys.platform.startswith('freebsd'): - self.link_flags += ['-lc', '-lm', '-pthread', '-lgcc_s'] - else: - self.lit_config.fatal("unrecognized system: %r" % sys.platform) - - if link_flags_str: - self.link_flags += shlex.split(link_flags_str) + if libcxx_library: + self.link_flags += [libcxx_library] + else: + self.link_flags += ['-lc++'] + cxx_abi = self.get_lit_conf('cxx_abi', 'libcxxabi') + if cxx_abi == 'libstdc++': + self.link_flags += ['-lstdc++'] + elif cxx_abi == 'libsupc++': + self.link_flags += ['-lsupc++'] + elif cxx_abi == 'libcxxabi': + self.link_flags += ['-lc++abi'] + elif cxx_abi == 'libcxxrt': + self.link_flags += ['-lcxxrt'] + elif cxx_abi == 'none': + pass + else: + self.lit_config.fatal( + 'C++ ABI setting %s unsupported for tests' % cxx_abi) + # Configure extra libraries. + if sys.platform == 'darwin': + self.link_flags += ['-lSystem'] + elif sys.platform.startswith('linux'): + self.link_flags += ['-lgcc_eh', '-lc', '-lm', '-lpthread', + '-lrt', '-lgcc_s'] + elif sys.platform.startswith('freebsd'): + self.link_flags += ['-lc', '-lm', '-pthread', '-lgcc_s'] + else: + self.lit_config.fatal("unrecognized system: %r" % sys.platform) + link_flags_str = self.get_lit_conf('link_flags', '') + self.link_flags += shlex.split(link_flags_str) - def configure_std_flag(self): - # Try and get the std version from the command line. Fall back to - # default given in lit.site.cfg is not present. If default is not - # present then force c++11. - std = self.get_lit_conf('std') - if std is None: - std = 'c++11' - self.lit_config.note('using default std: \'-std=c++11\'') - self.compile_flags += ['-std={0}'.format(std)] - self.config.available_features.add(std) def configure_sanitizer(self): - san = self.get_lit_conf('llvm_use_sanitizer', '').strip() + san = self.get_lit_conf('use_sanitizer', '').strip() if san: # Search for llvm-symbolizer along the compiler path first # and then along the PATH env variable. @@ -606,7 +623,12 @@ def configure_env(self): if sys.platform == 'darwin' and not self.use_system_lib: - self.env['DYLD_LIBRARY_PATH'] = self.library_root + libcxx_library = self.get_lit_conf('libcxx_library') + if libcxx_library: + library_root = os.path.dirname(libcxx_library) + else: + library_root = self.library_root + self.env['DYLD_LIBRARY_PATH'] = library_root # name: The name of this test suite. config.name = 'libc++' Index: test/lit.site.cfg.in =================================================================== --- test/lit.site.cfg.in +++ test/lit.site.cfg.in @@ -11,7 +11,7 @@ config.enable_threads = "@LIBCXX_ENABLE_THREADS@" config.enable_monotonic_clock = "@LIBCXX_ENABLE_MONOTONIC_CLOCK@" config.cxx_abi = "@LIBCXX_CXX_ABI_LIBNAME@" -config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@" +config.use_sanitizer = "@LLVM_USE_SANITIZER@" config.abi_library_path = "@LIBCXX_CXX_ABI_LIBRARY_PATH@" # Let the main config do the real work. Index: www/index.html =================================================================== --- www/index.html +++ www/index.html @@ -470,6 +470,7 @@
  • <type_traits>
  • Excellent notes by Marshall Clow
  • Status of debug mode
    • +
  • LIT usage guide
    • Index: www/lit_usage.html =================================================================== --- /dev/null +++ www/lit_usage.html @@ -0,0 +1,168 @@ + + + + + + Testing libc++ using LIT + + + + + + + + +
    + +

    Testing libc++ using LIT

    + +

    +libc++ uses LIT to configure and run its tests. The primary way to run the +libc++ tests is by using make check-libcxx. However since libc++ +can be used in any number of possible configurations it is important to +customize the way LIT builds and runs the tests. This guide provides +information on how to use LIT directly to test libc++. +

    +

    +Documentation for LIT can be found +here. +

    + + +

    Getting Started

    + +

    +After building libc++ use the following commands before you start using LIT to +test. +

    + +

    +You can now run the libc++ tests by running: +

    + +

    +To only run a subsection of the tests use: +

    + + +

    Customization Options

    + +

    +libc++'s testsuite provides multiple options to configure the way the tests +are build and run. To use these options you pass them on the LIT command line +as --param NAME or --param NAME=VALUE. Some options +have default values specified during CMake's configuration. Passing the option +on the command line will override the default. +

    + + +

    +

    libcxx_site_config=<path/to/lit.site.cfg>

    +
    +Specify the site configuration to use when running the tests. This option +overrides the enviroment variable LIBCXX_SITE_CONFIG +
    +

    + +

    +

    libcxx_headers=<path/to/headers>

    +
    +Specify the libc++ headers that are tested. By default the headers in the source +tree are used. +
    +

    + +

    +

    libcxx_library=<path/to/libc++.so>

    +
    +Specify the libc++ library that is tested. By default the library in the build +directory is used. This option cannot be used when use_system_lib +is provided. +
    +

    + +

    +

    use_system_lib=<bool>

    +
    +Default: False
    +Enable or disable testing against the installed version of libc++ library. +Note: This does not use the installed headers. +
    +

    + +

    +

    compile_flags="<list-of-args>"

    +
    +Specify additional compile flags as a space delimited string. +Note: This options should not be used to change the standard version used. +
    +

    + +

    +

    link_flags="<list-of-args>"

    +
    +Specify additional link flags as a space delimited string. +
    +

    + +

    +

    std=<standard version>

    +
    +Values: c++98, c++03, c++11, c++14, c++1z
    +Change the standard version used when building the tests. +
    +

    + +

    +

    use_sanitizer=<sanitizer name>

    +
    +Values: Memory, MemoryWithOrigins, Address, Undefined
    +Run the tests using the given sanitizer. If LLVM_USE_SANITIZER +was given when building libc++ then that sanitizer will be used by default. +
    +

    + +
    + +