testing/gtest/cmake/internal_utils.cmake - platform/external/chromium - Git at Google

 # Defines functions and macros useful for building Google Test and
 # Google Mock.
 #
 # Note:
 #
 # - This file will be run twice when building Google Mock (once via
 #   Google Test's CMakeLists.txt, and once via Google Mock's).
 #   Therefore it shouldn't have any side effects other than defining
 #   the functions and macros.
 #
 # - The functions/macros defined in this file may depend on Google
 #   Test and Google Mock's option() definitions, and thus must be
 #   called *after* the options have been defined.

 # Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
 #
 # This must be a macro(), as inside a function string() can only
 # update variables in the function scope.
 macro(fix_default_compiler_settings_)
   if (MSVC)
     # For MSVC, CMake sets certain flags to defaults we want to override.
     # This replacement code is taken from sample in the CMake Wiki at
     # http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace.
     foreach (flag_var
              CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
              CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
       if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
         # When Google Test is built as a shared library, it should also use
         # shared runtime libraries.  Otherwise, it may end up with multiple
         # copies of runtime library data in different modules, resulting in
         # hard-to-find crashes. When it is built as a static library, it is
         # preferable to use CRT as static libraries, as we don't have to rely
         # on CRT DLLs being available. CMake always defaults to using shared
         # CRT libraries, so we override that default here.
         string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
       endif()

       # We prefer more strict warning checking for building Google Test.
       # Replaces /W3 with /W4 in defaults.
       string(REPLACE "/W3" "-W4" ${flag_var} "${${flag_var}}")
     endforeach()
   endif()
 endmacro()

 # Defines the compiler/linker flags used to build Google Test and
 # Google Mock.  You can tweak these definitions to suit your need.  A
 # variable's value is empty before it's explicitly assigned to.
 macro(config_compiler_and_linker)
   if (NOT gtest_disable_pthreads)
     # Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
     find_package(Threads)
   endif()

   fix_default_compiler_settings_()
   if (MSVC)
     # Newlines inside flags variables break CMake's NMake generator.
     # TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
     set(cxx_base_flags "-GS -W4 -WX -wd4127 -wd4251 -wd4275 -nologo -J -Zi")
     set(cxx_base_flags "${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32")
     set(cxx_base_flags "${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN")
     set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
     set(cxx_no_exception_flags "-D_HAS_EXCEPTIONS=0")
     set(cxx_no_rtti_flags "-GR-")
   elseif (CMAKE_COMPILER_IS_GNUCXX)
     set(cxx_base_flags "-Wall -Wshadow")
     set(cxx_exception_flags "-fexceptions")
     set(cxx_no_exception_flags "-fno-exceptions")
     # Until version 4.3.2, GCC doesn't define a macro to indicate
     # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
     # explicitly.
     set(cxx_no_rtti_flags "-fno-rtti -DGTEST_HAS_RTTI=0")
     set(cxx_strict_flags "-Wextra")
   elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
     set(cxx_exception_flags "-features=except")
     # Sun Pro doesn't provide macros to indicate whether exceptions and
     # RTTI are enabled, so we define GTEST_HAS_* explicitly.
     set(cxx_no_exception_flags "-features=no%except -DGTEST_HAS_EXCEPTIONS=0")
     set(cxx_no_rtti_flags "-features=no%rtti -DGTEST_HAS_RTTI=0")
   elseif (CMAKE_CXX_COMPILER_ID STREQUAL "VisualAge" OR
       CMAKE_CXX_COMPILER_ID STREQUAL "XL")
     # CMake 2.8 changes Visual Age's compiler ID to "XL".
     set(cxx_exception_flags "-qeh")
     set(cxx_no_exception_flags "-qnoeh")
     # Until version 9.0, Visual Age doesn't define a macro to indicate
     # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
     # explicitly.
     set(cxx_no_rtti_flags "-qnortti -DGTEST_HAS_RTTI=0")
   endif()

   if (CMAKE_USE_PTHREADS_INIT)  # The pthreads library is available and allowed.
     set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=1")
   else()
     set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=0")
   endif()

   # For building gtest's own tests and samples.
   set(cxx_exception "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_exception_flags}")
   set(cxx_no_exception
     "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_no_exception_flags}")
   set(cxx_default "${cxx_exception}")
   set(cxx_no_rtti "${cxx_default} ${cxx_no_rtti_flags}")
   set(cxx_use_own_tuple "${cxx_default} -DGTEST_USE_OWN_TR1_TUPLE=1")

   # For building the gtest libraries.
   set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
 endmacro()

 # Defines the gtest & gtest_main libraries.  User tests should link
 # with one of them.
 function(cxx_library_with_type name type cxx_flags)
   # type can be either STATIC or SHARED to denote a static or shared library.
   # ARGN refers to additional arguments after 'cxx_flags'.
   add_library(${name} ${type} ${ARGN})
   set_target_properties(${name}
     PROPERTIES
     COMPILE_FLAGS "${cxx_flags}")
   if (BUILD_SHARED_LIBS OR type STREQUAL "SHARED")
     set_target_properties(${name}
       PROPERTIES
       COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
   endif()
   if (CMAKE_USE_PTHREADS_INIT)
     target_link_libraries(${name} ${CMAKE_THREAD_LIBS_INIT})
   endif()
 endfunction()

 ########################################################################
 #
 # Helper functions for creating build targets.

 function(cxx_shared_library name cxx_flags)
   cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
 endfunction()

 function(cxx_library name cxx_flags)
   cxx_library_with_type(${name} "" "${cxx_flags}" ${ARGN})
 endfunction()

 # cxx_executable_with_flags(name cxx_flags libs srcs...)
 #
 # creates a named C++ executable that depends on the given libraries and
 # is built from the given source files with the given compiler flags.
 function(cxx_executable_with_flags name cxx_flags libs)
   add_executable(${name} ${ARGN})
   if (cxx_flags)
     set_target_properties(${name}
       PROPERTIES
       COMPILE_FLAGS "${cxx_flags}")
   endif()
   if (BUILD_SHARED_LIBS)
     set_target_properties(${name}
       PROPERTIES
       COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
   endif()
   # To support mixing linking in static and dynamic libraries, link each
   # library in with an extra call to target_link_libraries.
   foreach (lib "${libs}")
     target_link_libraries(${name} ${lib})
   endforeach()
 endfunction()

 # cxx_executable(name dir lib srcs...)
 #
 # creates a named target that depends on the given libs and is built
 # from the given source files.  dir/name.cc is implicitly included in
 # the source file list.
 function(cxx_executable name dir libs)
   cxx_executable_with_flags(
     ${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
 endfunction()

 # Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
 find_package(PythonInterp)

 # cxx_test_with_flags(name cxx_flags libs srcs...)
 #
 # creates a named C++ test that depends on the given libs and is built
 # from the given source files with the given compiler flags.
 function(cxx_test_with_flags name cxx_flags libs)
   cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
   add_test(${name} ${name})
 endfunction()

 # cxx_test(name libs srcs...)
 #
 # creates a named test target that depends on the given libs and is
 # built from the given source files.  Unlike cxx_test_with_flags,
 # test/name.cc is already implicitly included in the source file list.
 function(cxx_test name libs)
   cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
     "test/${name}.cc" ${ARGN})
 endfunction()

 # py_test(name)
 #
 # creates a Python test with the given name whose main module is in
 # test/name.py.  It does nothing if Python is not installed.
 function(py_test name)
   # We are not supporting Python tests on Linux yet as they consider
   # all Linux environments to be google3 and try to use google3 features.
   if (PYTHONINTERP_FOUND)
     # ${CMAKE_BINARY_DIR} is known at configuration time, so we can
     # directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
     # only at ctest runtime (by calling ctest -c <Configuration>), so
     # we have to escape $ to delay variable substitution here.
     add_test(${name}
       ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
           --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE})
   endif()
 endfunction()
	# Defines functions and macros useful for building Google Test and
	# Google Mock.
	#
	# Note:
	#
	# - This file will be run twice when building Google Mock (once via
	# Google Test's CMakeLists.txt, and once via Google Mock's).
	# Therefore it shouldn't have any side effects other than defining
	# the functions and macros.
	#
	# - The functions/macros defined in this file may depend on Google
	# Test and Google Mock's option() definitions, and thus must be
	# called after the options have been defined.

	# Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
	#
	# This must be a macro(), as inside a function string() can only
	# update variables in the function scope.
	macro(fix_default_compiler_settings_)
	if (MSVC)
	# For MSVC, CMake sets certain flags to defaults we want to override.
	# This replacement code is taken from sample in the CMake Wiki at
	# http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace.
	foreach (flag_var
	CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
	CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
	if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
	# When Google Test is built as a shared library, it should also use
	# shared runtime libraries. Otherwise, it may end up with multiple
	# copies of runtime library data in different modules, resulting in
	# hard-to-find crashes. When it is built as a static library, it is
	# preferable to use CRT as static libraries, as we don't have to rely
	# on CRT DLLs being available. CMake always defaults to using shared
	# CRT libraries, so we override that default here.
	string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
	endif()

	# We prefer more strict warning checking for building Google Test.
	# Replaces /W3 with /W4 in defaults.
	string(REPLACE "/W3" "-W4" ${flag_var} "${${flag_var}}")
	endforeach()
	endif()
	endmacro()

	# Defines the compiler/linker flags used to build Google Test and
	# Google Mock. You can tweak these definitions to suit your need. A
	# variable's value is empty before it's explicitly assigned to.
	macro(config_compiler_and_linker)
	if (NOT gtest_disable_pthreads)
	# Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
	find_package(Threads)
	endif()

	fix_default_compiler_settings_()
	if (MSVC)
	# Newlines inside flags variables break CMake's NMake generator.
	# TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
	set(cxx_base_flags "-GS -W4 -WX -wd4127 -wd4251 -wd4275 -nologo -J -Zi")
	set(cxx_base_flags "${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32")
	set(cxx_base_flags "${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN")
	set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
	set(cxx_no_exception_flags "-D_HAS_EXCEPTIONS=0")
	set(cxx_no_rtti_flags "-GR-")
	elseif (CMAKE_COMPILER_IS_GNUCXX)
	set(cxx_base_flags "-Wall -Wshadow")
	set(cxx_exception_flags "-fexceptions")
	set(cxx_no_exception_flags "-fno-exceptions")
	# Until version 4.3.2, GCC doesn't define a macro to indicate
	# whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
	# explicitly.
	set(cxx_no_rtti_flags "-fno-rtti -DGTEST_HAS_RTTI=0")
	set(cxx_strict_flags "-Wextra")
	elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
	set(cxx_exception_flags "-features=except")
	# Sun Pro doesn't provide macros to indicate whether exceptions and
	# RTTI are enabled, so we define GTEST_HAS_* explicitly.
	set(cxx_no_exception_flags "-features=no%except -DGTEST_HAS_EXCEPTIONS=0")
	set(cxx_no_rtti_flags "-features=no%rtti -DGTEST_HAS_RTTI=0")
	elseif (CMAKE_CXX_COMPILER_ID STREQUAL "VisualAge" OR
	CMAKE_CXX_COMPILER_ID STREQUAL "XL")
	# CMake 2.8 changes Visual Age's compiler ID to "XL".
	set(cxx_exception_flags "-qeh")
	set(cxx_no_exception_flags "-qnoeh")
	# Until version 9.0, Visual Age doesn't define a macro to indicate
	# whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
	# explicitly.
	set(cxx_no_rtti_flags "-qnortti -DGTEST_HAS_RTTI=0")
	endif()

	if (CMAKE_USE_PTHREADS_INIT) # The pthreads library is available and allowed.
	set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=1")
	else()
	set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=0")
	endif()

	# For building gtest's own tests and samples.
	set(cxx_exception "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_exception_flags}")
	set(cxx_no_exception
	"${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_no_exception_flags}")
	set(cxx_default "${cxx_exception}")
	set(cxx_no_rtti "${cxx_default} ${cxx_no_rtti_flags}")
	set(cxx_use_own_tuple "${cxx_default} -DGTEST_USE_OWN_TR1_TUPLE=1")

	# For building the gtest libraries.
	set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
	endmacro()

	# Defines the gtest & gtest_main libraries. User tests should link
	# with one of them.
	function(cxx_library_with_type name type cxx_flags)
	# type can be either STATIC or SHARED to denote a static or shared library.
	# ARGN refers to additional arguments after 'cxx_flags'.
	add_library(${name} ${type} ${ARGN})
	set_target_properties(${name}
	PROPERTIES
	COMPILE_FLAGS "${cxx_flags}")
	if (BUILD_SHARED_LIBS OR type STREQUAL "SHARED")
	set_target_properties(${name}
	PROPERTIES
	COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
	endif()
	if (CMAKE_USE_PTHREADS_INIT)
	target_link_libraries(${name} ${CMAKE_THREAD_LIBS_INIT})
	endif()
	endfunction()

	########################################################################
	#
	# Helper functions for creating build targets.

	function(cxx_shared_library name cxx_flags)
	cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
	endfunction()

	function(cxx_library name cxx_flags)
	cxx_library_with_type(${name} "" "${cxx_flags}" ${ARGN})
	endfunction()

	# cxx_executable_with_flags(name cxx_flags libs srcs...)
	#
	# creates a named C++ executable that depends on the given libraries and
	# is built from the given source files with the given compiler flags.
	function(cxx_executable_with_flags name cxx_flags libs)
	add_executable(${name} ${ARGN})
	if (cxx_flags)
	set_target_properties(${name}
	PROPERTIES
	COMPILE_FLAGS "${cxx_flags}")
	endif()
	if (BUILD_SHARED_LIBS)
	set_target_properties(${name}
	PROPERTIES
	COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
	endif()
	# To support mixing linking in static and dynamic libraries, link each
	# library in with an extra call to target_link_libraries.
	foreach (lib "${libs}")
	target_link_libraries(${name} ${lib})
	endforeach()
	endfunction()

	# cxx_executable(name dir lib srcs...)
	#
	# creates a named target that depends on the given libs and is built
	# from the given source files. dir/name.cc is implicitly included in
	# the source file list.
	function(cxx_executable name dir libs)
	cxx_executable_with_flags(
	${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
	endfunction()

	# Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
	find_package(PythonInterp)

	# cxx_test_with_flags(name cxx_flags libs srcs...)
	#
	# creates a named C++ test that depends on the given libs and is built
	# from the given source files with the given compiler flags.
	function(cxx_test_with_flags name cxx_flags libs)
	cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
	add_test(${name} ${name})
	endfunction()

	# cxx_test(name libs srcs...)
	#
	# creates a named test target that depends on the given libs and is
	# built from the given source files. Unlike cxx_test_with_flags,
	# test/name.cc is already implicitly included in the source file list.
	function(cxx_test name libs)
	cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
	"test/${name}.cc" ${ARGN})
	endfunction()

	# py_test(name)
	#
	# creates a Python test with the given name whose main module is in
	# test/name.py. It does nothing if Python is not installed.
	function(py_test name)
	# We are not supporting Python tests on Linux yet as they consider
	# all Linux environments to be google3 and try to use google3 features.
	if (PYTHONINTERP_FOUND)
	# ${CMAKE_BINARY_DIR} is known at configuration time, so we can
	# directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
	# only at ctest runtime (by calling ctest -c <Configuration>), so
	# we have to escape $ to delay variable substitution here.
	add_test(${name}
	${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
	--build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE})
	endif()
	endfunction()