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How to add google test as an downloadable external project
########################### GTEST
# Enable ExternalProject CMake module
INCLUDE(ExternalProject)
# Set default ExternalProject root directory
SET_DIRECTORY_PROPERTIES(PROPERTIES EP_PREFIX ${CMAKE_BINARY_DIR}/third_party)
# Add gtest
# http://stackoverflow.com/questions/9689183/cmake-googletest
ExternalProject_Add(
googletest
URL http://googletest.googlecode.com/files/gtest-1.6.0.zip
# TIMEOUT 10
# # 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_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)
set(GTEST_INCLUDE_DIR ${source_dir}/include)
# Library
ExternalProject_Get_Property(googletest binary_dir)
set(GTEST_LIBRARY_PATH ${binary_dir}/${CMAKE_FIND_LIBRARY_PREFIXES}gtest.a)
set(GTEST_LIBRARY gtest)
add_library(${GTEST_LIBRARY} UNKNOWN IMPORTED)
set_property(TARGET ${GTEST_LIBRARY} PROPERTY IMPORTED_LOCATION
${GTEST_LIBRARY_PATH} )
add_dependencies(${GTEST_LIBRARY} googletest)
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