github.com/jlmucb/cloudproxy@v0.0.0-20170830161738-b5aa0b619bc4/src/third_party/googlemock/gtest/cmake/internal_utils.cmake (about)

     1  # Defines functions and macros useful for building Google Test and
     2  # Google Mock.
     3  #
     4  # Note:
     5  #
     6  # - This file will be run twice when building Google Mock (once via
     7  #   Google Test's CMakeLists.txt, and once via Google Mock's).
     8  #   Therefore it shouldn't have any side effects other than defining
     9  #   the functions and macros.
    10  #
    11  # - The functions/macros defined in this file may depend on Google
    12  #   Test and Google Mock's option() definitions, and thus must be
    13  #   called *after* the options have been defined.
    14  
    15  # Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
    16  #
    17  # This must be a macro(), as inside a function string() can only
    18  # update variables in the function scope.
    19  macro(fix_default_compiler_settings_)
    20    if (MSVC)
    21      # For MSVC, CMake sets certain flags to defaults we want to override.
    22      # This replacement code is taken from sample in the CMake Wiki at
    23      # http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace.
    24      foreach (flag_var
    25               CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
    26               CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
    27        if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
    28          # When Google Test is built as a shared library, it should also use
    29          # shared runtime libraries.  Otherwise, it may end up with multiple
    30          # copies of runtime library data in different modules, resulting in
    31          # hard-to-find crashes. When it is built as a static library, it is
    32          # preferable to use CRT as static libraries, as we don't have to rely
    33          # on CRT DLLs being available. CMake always defaults to using shared
    34          # CRT libraries, so we override that default here.
    35          string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
    36        endif()
    37  
    38        # We prefer more strict warning checking for building Google Test.
    39        # Replaces /W3 with /W4 in defaults.
    40        string(REPLACE "/W3" "-W4" ${flag_var} "${${flag_var}}")
    41      endforeach()
    42    endif()
    43  endmacro()
    44  
    45  # Defines the compiler/linker flags used to build Google Test and
    46  # Google Mock.  You can tweak these definitions to suit your need.  A
    47  # variable's value is empty before it's explicitly assigned to.
    48  macro(config_compiler_and_linker)
    49    if (NOT gtest_disable_pthreads)
    50      # Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
    51      find_package(Threads)
    52    endif()
    53  
    54    fix_default_compiler_settings_()
    55    if (MSVC)
    56      # Newlines inside flags variables break CMake's NMake generator.
    57      # TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
    58      set(cxx_base_flags "-GS -W4 -WX -wd4127 -wd4251 -wd4275 -nologo -J -Zi")
    59      if (MSVC_VERSION LESS 1400)
    60        # Suppress spurious warnings MSVC 7.1 sometimes issues.
    61        # Forcing value to bool.
    62        set(cxx_base_flags "${cxx_base_flags} -wd4800")
    63        # Copy constructor and assignment operator could not be generated.
    64        set(cxx_base_flags "${cxx_base_flags} -wd4511 -wd4512")
    65        # Compatibility warnings not applicable to Google Test.
    66        # Resolved overload was found by argument-dependent lookup.
    67        set(cxx_base_flags "${cxx_base_flags} -wd4675")
    68      endif()
    69      set(cxx_base_flags "${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32")
    70      set(cxx_base_flags "${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN")
    71      set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
    72      set(cxx_no_exception_flags "-D_HAS_EXCEPTIONS=0")
    73      set(cxx_no_rtti_flags "-GR-")
    74    elseif (CMAKE_COMPILER_IS_GNUCXX)
    75      set(cxx_base_flags "-Wall -Wshadow")
    76      set(cxx_exception_flags "-fexceptions")
    77      set(cxx_no_exception_flags "-fno-exceptions")
    78      # Until version 4.3.2, GCC doesn't define a macro to indicate
    79      # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
    80      # explicitly.
    81      set(cxx_no_rtti_flags "-fno-rtti -DGTEST_HAS_RTTI=0")
    82      set(cxx_strict_flags
    83        "-Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
    84    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
    85      set(cxx_exception_flags "-features=except")
    86      # Sun Pro doesn't provide macros to indicate whether exceptions and
    87      # RTTI are enabled, so we define GTEST_HAS_* explicitly.
    88      set(cxx_no_exception_flags "-features=no%except -DGTEST_HAS_EXCEPTIONS=0")
    89      set(cxx_no_rtti_flags "-features=no%rtti -DGTEST_HAS_RTTI=0")
    90    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "VisualAge" OR
    91        CMAKE_CXX_COMPILER_ID STREQUAL "XL")
    92      # CMake 2.8 changes Visual Age's compiler ID to "XL".
    93      set(cxx_exception_flags "-qeh")
    94      set(cxx_no_exception_flags "-qnoeh")
    95      # Until version 9.0, Visual Age doesn't define a macro to indicate
    96      # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
    97      # explicitly.
    98      set(cxx_no_rtti_flags "-qnortti -DGTEST_HAS_RTTI=0")
    99    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "HP")
   100      set(cxx_base_flags "-AA -mt")
   101      set(cxx_exception_flags "-DGTEST_HAS_EXCEPTIONS=1")
   102      set(cxx_no_exception_flags "+noeh -DGTEST_HAS_EXCEPTIONS=0")
   103      # RTTI can not be disabled in HP aCC compiler.
   104      set(cxx_no_rtti_flags "")
   105    endif()
   106  
   107    if (CMAKE_USE_PTHREADS_INIT)  # The pthreads library is available and allowed.
   108      set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=1")
   109    else()
   110      set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=0")
   111    endif()
   112  
   113    # For building gtest's own tests and samples.
   114    set(cxx_exception "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_exception_flags}")
   115    set(cxx_no_exception
   116      "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_no_exception_flags}")
   117    set(cxx_default "${cxx_exception}")
   118    set(cxx_no_rtti "${cxx_default} ${cxx_no_rtti_flags}")
   119    set(cxx_use_own_tuple "${cxx_default} -DGTEST_USE_OWN_TR1_TUPLE=1")
   120  
   121    # For building the gtest libraries.
   122    set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
   123  endmacro()
   124  
   125  # Defines the gtest & gtest_main libraries.  User tests should link
   126  # with one of them.
   127  function(cxx_library_with_type name type cxx_flags)
   128    # type can be either STATIC or SHARED to denote a static or shared library.
   129    # ARGN refers to additional arguments after 'cxx_flags'.
   130    add_library(${name} ${type} ${ARGN})
   131    set_target_properties(${name}
   132      PROPERTIES
   133      COMPILE_FLAGS "${cxx_flags}")
   134    if (BUILD_SHARED_LIBS OR type STREQUAL "SHARED")
   135      set_target_properties(${name}
   136        PROPERTIES
   137        COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
   138    endif()
   139    if (CMAKE_USE_PTHREADS_INIT)
   140      target_link_libraries(${name} ${CMAKE_THREAD_LIBS_INIT})
   141    endif()
   142  endfunction()
   143  
   144  ########################################################################
   145  #
   146  # Helper functions for creating build targets.
   147  
   148  function(cxx_shared_library name cxx_flags)
   149    cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
   150  endfunction()
   151  
   152  function(cxx_library name cxx_flags)
   153    cxx_library_with_type(${name} "" "${cxx_flags}" ${ARGN})
   154  endfunction()
   155  
   156  # cxx_executable_with_flags(name cxx_flags libs srcs...)
   157  #
   158  # creates a named C++ executable that depends on the given libraries and
   159  # is built from the given source files with the given compiler flags.
   160  function(cxx_executable_with_flags name cxx_flags libs)
   161    add_executable(${name} ${ARGN})
   162    if (cxx_flags)
   163      set_target_properties(${name}
   164        PROPERTIES
   165        COMPILE_FLAGS "${cxx_flags}")
   166    endif()
   167    if (BUILD_SHARED_LIBS)
   168      set_target_properties(${name}
   169        PROPERTIES
   170        COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
   171    endif()
   172    # To support mixing linking in static and dynamic libraries, link each
   173    # library in with an extra call to target_link_libraries.
   174    foreach (lib "${libs}")
   175      target_link_libraries(${name} ${lib})
   176    endforeach()
   177  endfunction()
   178  
   179  # cxx_executable(name dir lib srcs...)
   180  #
   181  # creates a named target that depends on the given libs and is built
   182  # from the given source files.  dir/name.cc is implicitly included in
   183  # the source file list.
   184  function(cxx_executable name dir libs)
   185    cxx_executable_with_flags(
   186      ${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
   187  endfunction()
   188  
   189  # Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
   190  find_package(PythonInterp)
   191  
   192  # cxx_test_with_flags(name cxx_flags libs srcs...)
   193  #
   194  # creates a named C++ test that depends on the given libs and is built
   195  # from the given source files with the given compiler flags.
   196  function(cxx_test_with_flags name cxx_flags libs)
   197    cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
   198    add_test(${name} ${name})
   199  endfunction()
   200  
   201  # cxx_test(name libs srcs...)
   202  #
   203  # creates a named test target that depends on the given libs and is
   204  # built from the given source files.  Unlike cxx_test_with_flags,
   205  # test/name.cc is already implicitly included in the source file list.
   206  function(cxx_test name libs)
   207    cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
   208      "test/${name}.cc" ${ARGN})
   209  endfunction()
   210  
   211  # py_test(name)
   212  #
   213  # creates a Python test with the given name whose main module is in
   214  # test/name.py.  It does nothing if Python is not installed.
   215  function(py_test name)
   216    # We are not supporting Python tests on Linux yet as they consider
   217    # all Linux environments to be google3 and try to use google3 features.
   218    if (PYTHONINTERP_FOUND)
   219      # ${CMAKE_BINARY_DIR} is known at configuration time, so we can
   220      # directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
   221      # only at ctest runtime (by calling ctest -c <Configuration>), so
   222      # we have to escape $ to delay variable substitution here.
   223      add_test(${name}
   224        ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
   225            --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE})
   226    endif()
   227  endfunction()