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247 lines
10 KiB
CMake
247 lines
10 KiB
CMake
# Defines functions and macros useful for building Google Test and
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# Google Mock.
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#
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# Note:
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#
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# - This file will be run twice when building Google Mock (once via
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# Google Test's CMakeLists.txt, and once via Google Mock's).
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# Therefore it shouldn't have any side effects other than defining
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# the functions and macros.
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#
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# - The functions/macros defined in this file may depend on Google
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# Test and Google Mock's option() definitions, and thus must be
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# called *after* the options have been defined.
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# Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
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#
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# This must be a macro(), as inside a function string() can only
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# update variables in the function scope.
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macro(fix_default_compiler_settings_)
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if (MSVC)
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# For MSVC, CMake sets certain flags to defaults we want to override.
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# This replacement code is taken from sample in the CMake Wiki at
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# http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace.
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foreach (flag_var
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CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
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# When Google Test is built as a shared library, it should also use
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# shared runtime libraries. Otherwise, it may end up with multiple
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# copies of runtime library data in different modules, resulting in
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# hard-to-find crashes. When it is built as a static library, it is
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# preferable to use CRT as static libraries, as we don't have to rely
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# on CRT DLLs being available. CMake always defaults to using shared
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# CRT libraries, so we override that default here.
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string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
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endif()
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# We prefer more strict warning checking for building Google Test.
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# Replaces /W3 with /W4 in defaults.
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string(REPLACE "/W3" "/W4" ${flag_var} "${${flag_var}}")
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endforeach()
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endif()
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endmacro()
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# Defines the compiler/linker flags used to build Google Test and
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# Google Mock. You can tweak these definitions to suit your need. A
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# variable's value is empty before it's explicitly assigned to.
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macro(config_compiler_and_linker)
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if (NOT gtest_disable_pthreads AND NOT MINGW)
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# Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
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find_package(Threads)
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endif()
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fix_default_compiler_settings_()
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if (MSVC)
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# Newlines inside flags variables break CMake's NMake generator.
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# TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
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set(cxx_base_flags "-GS -W4 -WX -wd4251 -wd4275 -nologo -J -Zi")
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if (MSVC_VERSION LESS 1400) # 1400 is Visual Studio 2005
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# Suppress spurious warnings MSVC 7.1 sometimes issues.
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# Forcing value to bool.
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set(cxx_base_flags "${cxx_base_flags} -wd4800")
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# Copy constructor and assignment operator could not be generated.
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set(cxx_base_flags "${cxx_base_flags} -wd4511 -wd4512")
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# Compatibility warnings not applicable to Google Test.
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# Resolved overload was found by argument-dependent lookup.
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set(cxx_base_flags "${cxx_base_flags} -wd4675")
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endif()
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if (MSVC_VERSION LESS 1500) # 1500 is Visual Studio 2008
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# Conditional expression is constant.
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# When compiling with /W4, we get several instances of C4127
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# (Conditional expression is constant). In our code, we disable that
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# warning on a case-by-case basis. However, on Visual Studio 2005,
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# the warning fires on std::list. Therefore on that compiler and earlier,
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# we disable the warning project-wide.
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set(cxx_base_flags "${cxx_base_flags} -wd4127")
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endif()
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if (NOT (MSVC_VERSION LESS 1700)) # 1700 is Visual Studio 2012.
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# Suppress "unreachable code" warning on VS 2012 and later.
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# http://stackoverflow.com/questions/3232669 explains the issue.
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set(cxx_base_flags "${cxx_base_flags} -wd4702")
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endif()
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set(cxx_base_flags "${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32")
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set(cxx_base_flags "${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN")
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set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
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set(cxx_no_exception_flags "-D_HAS_EXCEPTIONS=0")
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set(cxx_no_rtti_flags "-GR-")
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elseif (CMAKE_COMPILER_IS_GNUCXX)
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set(cxx_base_flags "-Wall -Wshadow -fPIC")
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set(cxx_exception_flags "-fexceptions")
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set(cxx_no_exception_flags "-fno-exceptions")
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# Until version 4.3.2, GCC doesn't define a macro to indicate
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# whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
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# explicitly.
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set(cxx_no_rtti_flags "-fno-rtti -DGTEST_HAS_RTTI=0")
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set(cxx_strict_flags
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"-Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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set(cxx_base_flags "-Wall -Wshadow -fPIC")
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set(cxx_exception_flags "-fexceptions")
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set(cxx_no_exception_flags "-fno-exceptions")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
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set(cxx_exception_flags "-features=except")
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# Sun Pro doesn't provide macros to indicate whether exceptions and
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# RTTI are enabled, so we define GTEST_HAS_* explicitly.
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set(cxx_no_exception_flags "-features=no%except -DGTEST_HAS_EXCEPTIONS=0")
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set(cxx_no_rtti_flags "-features=no%rtti -DGTEST_HAS_RTTI=0")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "VisualAge" OR
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CMAKE_CXX_COMPILER_ID STREQUAL "XL")
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# CMake 2.8 changes Visual Age's compiler ID to "XL".
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set(cxx_exception_flags "-qeh")
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set(cxx_no_exception_flags "-qnoeh")
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# Until version 9.0, Visual Age doesn't define a macro to indicate
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# whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
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# explicitly.
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set(cxx_no_rtti_flags "-qnortti -DGTEST_HAS_RTTI=0")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "HP")
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set(cxx_base_flags "-AA -mt")
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set(cxx_exception_flags "-DGTEST_HAS_EXCEPTIONS=1")
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set(cxx_no_exception_flags "+noeh -DGTEST_HAS_EXCEPTIONS=0")
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# RTTI can not be disabled in HP aCC compiler.
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set(cxx_no_rtti_flags "")
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endif()
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if (CMAKE_USE_PTHREADS_INIT) # The pthreads library is available and allowed.
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set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=1")
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else()
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set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=0")
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endif()
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# For building gtest's own tests and samples.
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set(cxx_exception "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_exception_flags}")
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set(cxx_no_exception
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"${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_no_exception_flags}")
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set(cxx_default "${cxx_exception}")
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set(cxx_no_rtti "${cxx_default} ${cxx_no_rtti_flags}")
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set(cxx_use_own_tuple "${cxx_default} -DGTEST_USE_OWN_TR1_TUPLE=1")
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# For building the gtest libraries.
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set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
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endmacro()
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# Defines the gtest & gtest_main libraries. User tests should link
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# with one of them.
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function(cxx_library_with_type name type cxx_flags)
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# type can be either STATIC or SHARED to denote a static or shared library.
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# ARGN refers to additional arguments after 'cxx_flags'.
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add_library(${name} ${type} ${ARGN})
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set_target_properties(${name}
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PROPERTIES
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COMPILE_FLAGS "${cxx_flags}")
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if (BUILD_SHARED_LIBS OR type STREQUAL "SHARED")
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set_target_properties(${name}
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PROPERTIES
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COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
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endif()
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if (CMAKE_USE_PTHREADS_INIT)
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target_link_libraries(${name} ${CMAKE_THREAD_LIBS_INIT})
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endif()
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endfunction()
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########################################################################
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#
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# Helper functions for creating build targets.
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function(cxx_shared_library name cxx_flags)
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cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
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endfunction()
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function(cxx_library name cxx_flags)
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cxx_library_with_type(${name} "" "${cxx_flags}" ${ARGN})
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endfunction()
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# cxx_executable_with_flags(name cxx_flags libs srcs...)
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#
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# creates a named C++ executable that depends on the given libraries and
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# is built from the given source files with the given compiler flags.
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function(cxx_executable_with_flags name cxx_flags libs)
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add_executable(${name} ${ARGN})
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if (cxx_flags)
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set_target_properties(${name}
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PROPERTIES
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COMPILE_FLAGS "${cxx_flags}")
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endif()
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if (BUILD_SHARED_LIBS)
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set_target_properties(${name}
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PROPERTIES
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COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
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endif()
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# To support mixing linking in static and dynamic libraries, link each
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# library in with an extra call to target_link_libraries.
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foreach (lib "${libs}")
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target_link_libraries(${name} ${lib})
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endforeach()
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endfunction()
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# cxx_executable(name dir lib srcs...)
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#
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# creates a named target that depends on the given libs and is built
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# from the given source files. dir/name.cc is implicitly included in
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# the source file list.
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function(cxx_executable name dir libs)
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cxx_executable_with_flags(
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${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
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endfunction()
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# Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
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find_package(PythonInterp)
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# cxx_test_with_flags(name cxx_flags libs srcs...)
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#
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# creates a named C++ test that depends on the given libs and is built
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# from the given source files with the given compiler flags.
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function(cxx_test_with_flags name cxx_flags libs)
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cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
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add_test(${name} ${name})
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endfunction()
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# cxx_test(name libs srcs...)
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#
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# creates a named test target that depends on the given libs and is
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# built from the given source files. Unlike cxx_test_with_flags,
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# test/name.cc is already implicitly included in the source file list.
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function(cxx_test name libs)
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cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
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"test/${name}.cc" ${ARGN})
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endfunction()
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# py_test(name)
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#
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# creates a Python test with the given name whose main module is in
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# test/name.py. It does nothing if Python is not installed.
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function(py_test name)
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# We are not supporting Python tests on Linux yet as they consider
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# all Linux environments to be google3 and try to use google3 features.
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if (PYTHONINTERP_FOUND)
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# ${CMAKE_BINARY_DIR} is known at configuration time, so we can
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# directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
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# only at ctest runtime (by calling ctest -c <Configuration>), so
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# we have to escape $ to delay variable substitution here.
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add_test(${name}
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${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
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--build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE})
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endif()
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endfunction()
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