File: CMakeLists.txt

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cmake 2.8.11.1-1~bpo70+1
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cmake_minimum_required(VERSION 2.8)
project(ExternalProjectUpdateTest NONE)

include(ExternalProject)

find_package(Git)

option(ExternalProjectUpdateTest_USE_FOLDERS "Enable folder grouping in IDEs." ON)
if(ExternalProjectUpdateTest_USE_FOLDERS)
  set_property(GLOBAL PROPERTY USE_FOLDERS ON)
else()
  set_property(GLOBAL PROPERTY USE_FOLDERS OFF)
endif()

set_property(GLOBAL PROPERTY PREDEFINED_TARGETS_FOLDER
  "CMakePredefinedTargets-in-ExternalProjectUpdateTest")

set(base "${CMAKE_BINARY_DIR}/CMakeExternals")
set(binary_base "${base}/Build")
set_property(DIRECTORY PROPERTY EP_BASE ${base})
set_property(DIRECTORY PROPERTY EP_STEP_TARGETS configure build test)

set(do_git_tests 0)

if(GIT_EXECUTABLE)
  set(do_git_tests 1)

  execute_process(
    COMMAND "${GIT_EXECUTABLE}" --version
    OUTPUT_VARIABLE ov
    OUTPUT_STRIP_TRAILING_WHITESPACE
    )
  string(REGEX REPLACE "^git version (.+)$" "\\1" git_version "${ov}")
  message(STATUS "git_version='${git_version}'")

  if(git_version VERSION_LESS 1.6.5)
    message(STATUS "No ExternalProject git tests with git client less than version 1.6.5")
    set(do_git_tests 0)
  endif()
endif()

# This should be specified from the command line.
if(NOT TEST_GIT_TAG)
  set(TEST_GIT_TAG origin/master)
endif()

if(do_git_tests)
  set(local_git_repo "../../LocalRepositories/GIT")

  # Unzip/untar the git repository in our source folder so that other
  # projects below may use it to test git args of ExternalProject_Add
  #
  set(proj SetupLocalGITRepository)
  ExternalProject_Add(${proj}
    SOURCE_DIR ${CMAKE_CURRENT_BINARY_DIR}/LocalRepositories/GIT
    URL ${CMAKE_CURRENT_SOURCE_DIR}/gitrepo.tgz
    BUILD_COMMAND ""
    CONFIGURE_COMMAND "${GIT_EXECUTABLE}" --version
    INSTALL_COMMAND ""
  )
  set_property(TARGET ${proj}
    PROPERTY FOLDER "SetupRepos/Local/Deeply/Nested/For/Testing")

  set(proj TutorialStep1-GIT)
  ExternalProject_Add(${proj}
    GIT_REPOSITORY "${local_git_repo}"
    GIT_TAG ${TEST_GIT_TAG}
    CMAKE_GENERATOR "${CMAKE_GENERATOR}"
    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
    INSTALL_COMMAND ""
    DEPENDS "SetupLocalGITRepository"
  )
  set_property(TARGET ${proj} PROPERTY FOLDER "GIT")
endif()


# Test the testable built/installed products:
#
enable_testing()


# Do at least a smoke test of a built executable from each
# project's build directory...
#
# BuildTree tests:
#

if(do_git_tests)
  add_test(TutorialStep1-GIT
    "${binary_base}/TutorialStep1-GIT/Tutorial" 81)
endif()

message(STATUS "do_git_tests='${do_git_tests}'")
message(STATUS "GIT_EXECUTABLE='${GIT_EXECUTABLE}'")