# 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_
) # For MSVC, CMake sets certain flags to defaults we want to override.
# This replacement code is taken from sample in the CMake Wiki at
# https://gitlab.kitware.com/cmake/community/wikis/FAQ#dynamic-replace.
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}}")
# We prefer more strict warning checking for building Google Test.
# Replaces /W3 with /W4 in defaults.
string(REPLACE "/W3" "/W4" ${flag_var} "${${flag_var}}")
# Prevent D9025 warning for targets that have exception handling
# turned off (/EHs-c- flag). Where required, exceptions are explicitly
# re-enabled using the cxx_exception_flags variable.
string(REPLACE "/EHsc" "" ${flag_var} "${${flag_var}}")
# Defines the compiler/linker flags used to build Google Test and
# Google Mock. You can tweak these definitions to suit your need. A
# variable's value is empty before it's explicitly assigned to.
macro(config_compiler_and_linker
) # Note: pthreads on MinGW is not supported, even if available
# instead, we use windows threading primitives
if (NOT gtest_disable_pthreads
AND NOT MINGW
) # Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
set(THREADS_PREFER_PTHREAD_FLAG
ON) if (CMAKE_USE_PTHREADS_INIT
) set(GTEST_HAS_PTHREAD
ON)
fix_default_compiler_settings_()
# Newlines inside flags variables break CMake's NMake generator.
# TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
set(cxx_base_flags
"-GS -W4 -WX -wd4251 -wd4275 -nologo -J -Zi") if (MSVC_VERSION
LESS 1400
) # 1400 is Visual Studio 2005 # Suppress spurious warnings MSVC 7.1 sometimes issues.
# Forcing value to bool.
set(cxx_base_flags
"${cxx_base_flags} -wd4800") # Copy constructor and assignment operator could not be generated.
set(cxx_base_flags
"${cxx_base_flags} -wd4511 -wd4512") # Compatibility warnings not applicable to Google Test.
# Resolved overload was found by argument-dependent lookup.
set(cxx_base_flags
"${cxx_base_flags} -wd4675") if (MSVC_VERSION
LESS 1500
) # 1500 is Visual Studio 2008 # Conditional expression is constant.
# When compiling with /W4, we get several instances of C4127
# (Conditional expression is constant). In our code, we disable that
# warning on a case-by-case basis. However, on Visual Studio 2005,
# the warning fires on std::list. Therefore on that compiler and earlier,
# we disable the warning project-wide.
set(cxx_base_flags
"${cxx_base_flags} -wd4127") if (NOT (MSVC_VERSION
LESS 1700
)) # 1700 is Visual Studio 2012. # Suppress "unreachable code" warning on VS 2012 and later.
# http://stackoverflow.com/questions/3232669 explains the issue.
set(cxx_base_flags
"${cxx_base_flags} -wd4702")
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
"-EHs-c- -D_HAS_EXCEPTIONS=0") set(cxx_no_rtti_flags
"-GR-") elseif (CMAKE_COMPILER_IS_GNUCXX
) set(cxx_base_flags
"-Wall -Wshadow -Werror") if(NOT CMAKE_CXX_COMPILER_VERSION
VERSION_LESS 7.0.0
) set(cxx_base_flags
"${cxx_base_flags} -Wno-error=dangling-else") set(cxx_exception_flags
"-fexceptions") set(cxx_no_exception_flags
"-fno-exceptions") # Until version 4.3.2, GCC doesn't define a macro to indicate
# whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
# explicitly.
set(cxx_no_rtti_flags
"-fno-rtti -DGTEST_HAS_RTTI=0") "-Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
elseif (CMAKE_CXX_COMPILER_ID
STREQUAL "SunPro") set(cxx_exception_flags
"-features=except") # Sun Pro doesn't provide macros to indicate whether exceptions and
# RTTI are enabled, so we define GTEST_HAS_* explicitly.
set(cxx_no_exception_flags
"-features=no%except -DGTEST_HAS_EXCEPTIONS=0") set(cxx_no_rtti_flags
"-features=no%rtti -DGTEST_HAS_RTTI=0") elseif (CMAKE_CXX_COMPILER_ID
STREQUAL "VisualAge" OR CMAKE_CXX_COMPILER_ID STREQUAL "XL")
# CMake 2.8 changes Visual Age's compiler ID to "XL".
set(cxx_exception_flags
"-qeh") set(cxx_no_exception_flags
"-qnoeh") # Until version 9.0, Visual Age doesn't define a macro to indicate
# whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
# explicitly.
set(cxx_no_rtti_flags
"-qnortti -DGTEST_HAS_RTTI=0") elseif (CMAKE_CXX_COMPILER_ID
STREQUAL "HP") set(cxx_base_flags
"-AA -mt") set(cxx_exception_flags
"-DGTEST_HAS_EXCEPTIONS=1") set(cxx_no_exception_flags
"+noeh -DGTEST_HAS_EXCEPTIONS=0") # RTTI can not be disabled in HP aCC compiler.
set(cxx_no_rtti_flags
"")
# The pthreads library is available and allowed?
if (DEFINED GTEST_HAS_PTHREAD
) set(GTEST_HAS_PTHREAD_MACRO
"-DGTEST_HAS_PTHREAD=1") set(GTEST_HAS_PTHREAD_MACRO
"-DGTEST_HAS_PTHREAD=0") set(cxx_base_flags
"${cxx_base_flags} ${GTEST_HAS_PTHREAD_MACRO}")
# For building gtest's own tests and samples.
set(cxx_exception
"${cxx_base_flags} ${cxx_exception_flags}") "${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} ${cxx_strict_flags}")
# Defines the gtest & gtest_main libraries. User tests should link
# with one of them.
function(cxx_library_with_type name type cxx_flags
) # type can be either STATIC or SHARED to denote a static or shared library.
# ARGN refers to additional arguments after 'cxx_flags'.
PROPERTIES
COMPILE_FLAGS "${cxx_flags}")
# Generate debug library name with a postfix.
PROPERTIES
DEBUG_POSTFIX "d")
if (BUILD_SHARED_LIBS
OR type
STREQUAL "SHARED") PROPERTIES
COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
if (NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11") target_compile_definitions(${name} INTERFACE
$<INSTALL_INTERFACE:GTEST_LINKED_AS_SHARED_LIBRARY=1>)
if (DEFINED GTEST_HAS_PTHREAD
) if ("${CMAKE_VERSION}" VERSION_LESS "3.1.0") set(threads_spec
${CMAKE_THREAD_LIBS_INIT}) set(threads_spec Threads::Threads
)
########################################################################
#
# Helper functions for creating build targets.
function(cxx_shared_library name cxx_flags
) cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
cxx_library_with_type(${name} "" "${cxx_flags}" ${ARGN})
# cxx_executable_with_flags(name cxx_flags libs srcs...)
#
# creates a named C++ executable that depends on the given libraries and
# is built from the given source files with the given compiler flags.
function(cxx_executable_with_flags name cxx_flags libs
) if (MSVC
AND (NOT (MSVC_VERSION
LESS 1700
))) # 1700 is Visual Studio 2012. # BigObj required for tests.
set(cxx_flags
"${cxx_flags} -bigobj") PROPERTIES
COMPILE_FLAGS "${cxx_flags}")
PROPERTIES
COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
# To support mixing linking in static and dynamic libraries, link each
# library in with an extra call to target_link_libraries.
# 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.
cxx_executable_with_flags(
${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
# Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
# cxx_test_with_flags(name cxx_flags libs srcs...)
#
# creates a named C++ test that depends on the given libs and is built
# from the given source files with the given compiler flags.
function(cxx_test_with_flags name cxx_flags libs
) cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
# cxx_test(name libs srcs...)
#
# creates a named test target that depends on the given libs and is
# built from the given source files. Unlike cxx_test_with_flags,
# test/name.cc is already implicitly included in the source file list.
cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
"test/${name}.cc" ${ARGN})
# py_test(name)
#
# creates a Python test with the given name whose main module is in
# test/name.py. It does nothing if Python is not installed.
if (${CMAKE_MAJOR_VERSION}.
${CMAKE_MINOR_VERSION} GREATER 3.1
) if (CMAKE_CONFIGURATION_TYPES
) # Multi-configuration build generators as for Visual Studio save
# output in a subdirectory of CMAKE_CURRENT_BINARY_DIR (Debug,
# Release etc.), so we have to provide it here.
NAME ${name}
COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
--build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG> ${ARGN})
else (CMAKE_CONFIGURATION_TYPES
) # Single-configuration build generators like Makefile generators
# don't have subdirs below CMAKE_CURRENT_BINARY_DIR.
NAME ${name}
COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
--build_dir=${CMAKE_CURRENT_BINARY_DIR} ${ARGN})
endif (CMAKE_CONFIGURATION_TYPES
) else (${CMAKE_MAJOR_VERSION}.
${CMAKE_MINOR_VERSION} GREATER 3.1
) # ${CMAKE_CURRENT_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.
${name}
${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
--build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE} ${ARGN})
endif (${CMAKE_MAJOR_VERSION}.
${CMAKE_MINOR_VERSION} GREATER 3.1
) endif(PYTHONINTERP_FOUND
)
# install_project(targets...)
#
# Installs the specified targets and configures the associated pkgconfig files.
install(DIRECTORY "${PROJECT_SOURCE_DIR}/include/" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
# Install the project targets.
EXPORT ${targets_export_name}
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
# Configure and install pkgconfig files.
set(configured_pc
"${generated_dir}/${t}.pc") "${configured_pc}" @ONLY)
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")