CMake + GoogleTest 質問する

これは珍しいケースです。ほとんどのプロジェクトではインストール ルールが指定されています。

CMake のExternalProject_Addモジュールは、おそらくこの作業に最適なツールです。これにより、プロジェクト内から gtest をダウンロード、構成、ビルドし、gtest ライブラリにリンクすることができます。

次の CMakeLists.txt を Windows の Visual Studio 10 および 11、Ubuntu の GCC 4.8 および Clang 3.2 でテストしました。他のプラットフォーム/コンパイラでは調整が必要になる可能性があります。

cmake_minimum_required(VERSION 2.8.7 FATAL_ERROR)
project(Test)

# Create main.cpp which uses gtest
file(WRITE src/main.cpp "#include \"gtest/gtest.h\"\n\n")
file(APPEND src/main.cpp "TEST(A, B) { SUCCEED(); }\n")
file(APPEND src/main.cpp "int main(int argc, char **argv) {\n")
file(APPEND src/main.cpp "  testing::InitGoogleTest(&argc, argv);\n")
file(APPEND src/main.cpp "  return RUN_ALL_TESTS();\n")
file(APPEND src/main.cpp "}\n")

# Create patch file for gtest with MSVC 2012
if(MSVC_VERSION EQUAL 1700)
  file(WRITE gtest.patch "Index: cmake/internal_utils.cmake\n")
  file(APPEND gtest.patch "===================================================================\n")
  file(APPEND gtest.patch "--- cmake/internal_utils.cmake   (revision 660)\n")
  file(APPEND gtest.patch "+++ cmake/internal_utils.cmake   (working copy)\n")
  file(APPEND gtest.patch "@@ -66,6 +66,9 @@\n")
  file(APPEND gtest.patch "       # Resolved overload was found by argument-dependent lookup.\n")
  file(APPEND gtest.patch "       set(cxx_base_flags \"\${cxx_base_flags} -wd4675\")\n")
  file(APPEND gtest.patch "     endif()\n")
  file(APPEND gtest.patch "+    if (MSVC_VERSION EQUAL 1700)\n")
  file(APPEND gtest.patch "+      set(cxx_base_flags \"\${cxx_base_flags} -D_VARIADIC_MAX=10\")\n")
  file(APPEND gtest.patch "+    endif ()\n")
  file(APPEND gtest.patch "     set(cxx_base_flags \"\${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32\")\n")
  file(APPEND gtest.patch "     set(cxx_base_flags \"\${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN\")\n")
  file(APPEND gtest.patch "     set(cxx_exception_flags \"-EHsc -D_HAS_EXCEPTIONS=1\")\n")
else()
  file(WRITE gtest.patch "")
endif()

# Enable ExternalProject CMake module
include(ExternalProject)

# Set the build type if it isn't already
if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Release)
endif()

# Set default ExternalProject root directory
set_directory_properties(PROPERTIES EP_PREFIX ${CMAKE_BINARY_DIR}/ThirdParty)

# Add gtest
ExternalProject_Add(
    googletest
    SVN_REPOSITORY http://googletest.googlecode.com/svn/trunk/
    SVN_REVISION -r 660
    TIMEOUT 10
    PATCH_COMMAND svn patch ${CMAKE_SOURCE_DIR}/gtest.patch ${CMAKE_BINARY_DIR}/ThirdParty/src/googletest
    # Force separate output paths for debug and release builds to allow easy
    # identification of correct lib in subsequent TARGET_LINK_LIBRARIES commands
    CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
               -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG:PATH=DebugLibs
               -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE:PATH=ReleaseLibs
               -Dgtest_force_shared_crt=ON
    # Disable install step
    INSTALL_COMMAND ""
    # Wrap download, configure and build steps in a script to log output
    LOG_DOWNLOAD ON
    LOG_CONFIGURE ON
    LOG_BUILD ON)

# Specify include dir
ExternalProject_Get_Property(googletest source_dir)
include_directories(${source_dir}/include)

# Add compiler flag for MSVC 2012
if(MSVC_VERSION EQUAL 1700)
  add_definitions(-D_VARIADIC_MAX=10)
endif()

# Add test executable target
add_executable(MainTest ${PROJECT_SOURCE_DIR}/src/main.cpp)

# Create dependency of MainTest on googletest
add_dependencies(MainTest googletest)

# Specify MainTest's link libraries
ExternalProject_Get_Property(googletest binary_dir)
if(MSVC)
  set(Suffix ".lib")
else()
  set(Suffix ".a")
  set(Pthread "-pthread")
endif()
target_link_libraries(
    MainTest
    debug ${binary_dir}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest${Suffix}
    optimized ${binary_dir}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest${Suffix}
    ${Pthread})

cd MyTest
mkdir build
cd build
cmake ..