# Enable ExternalProject CMake module

include(ExternalProject)

# Set default ExternalProject root directory

set_directory_properties(PROPERTIES EP_PREFIX ${CMAKE_BINARY_DIR}/ThirdParty)

#######################

# 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()

if (NOT CMAKE_BUILD_TYPE)

message("Setting CMAKE_BUILD_TYPE to `Release`")

set(CMAKE_BUILD_TYPE Release)

endif()

# Add gtest

ExternalProject_Add(

googletest

SVN_REPOSITORY https://github.com/google/googletest/tags/release-1.7.0

#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()

# Specify MainTest's link libraries

ExternalProject_Get_Property(googletest binary_dir)

if(MSVC)

set(Suffix ".lib")

else()

set(Suffix ".a")

set(Pthread "-pthread")

endif()

set(GTEST_DEBUG_LIBS ${binary_dir}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest${Suffix})

set(GTEST_RELEASE_LIBS ${binary_dir}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}gtest${Suffix})