init-cpm-module.cmake

if(NOT DEFINED CPM_MODULE_NAME)
  message(FATAL_ERROR "CPM_MODULE_NAME needs to be set before initializing a CPM module")
endif()
set(CPM_REPOSITORY https://github.com/iauns/cpm)
set(CPM_LIB_TARGET_NAME ${CPM_MODULE_NAME})
if ((DEFINED CPM_DIR) AND (DEFINED CPM_UNIQUE_ID) AND (DEFINED CPM_TARGET_NAME))
  set(CPM_LIB_TARGET_NAME ${CPM_TARGET_NAME})
  set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CPM_DIR})
  include(CPM)
else()
  set(CPM_DIR "${CMAKE_CURRENT_BINARY_DIR}/cpm-packages" CACHE TYPE STRING)
  find_package(Git)
  if(NOT GIT_FOUND)
    message(FATAL_ERROR "CPM requires Git.")
  endif()
  if (NOT EXISTS ${CPM_DIR}/CPM.cmake)
    execute_process(
      COMMAND "${GIT_EXECUTABLE}" clone ${CPM_REPOSITORY} ${CPM_DIR}
      RESULT_VARIABLE error_code
      OUTPUT_QUIET ERROR_QUIET)
    if(error_code)
      message(FATAL_ERROR "CPM failed to get the hash for HEAD")
    endif()
  endif()
  include(${CPM_DIR}/CPM.cmake)
endif()