File: hgversion.cmake

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votca-tools 1.2.4-1
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set(CMAKE_MODULE_PATH ${TOP_SOURCE_DIR}/CMakeModules)
find_package(Mercurial)
if (MERCURIAL_FOUND AND IS_DIRECTORY ${TOP_SOURCE_DIR}/.hg)
  MERCURIAL_HG_INFO(${TOP_SOURCE_DIR} TOOLS)
  MESSAGE("Current revision is ${TOOLS_HG_ID}")
  set (TOOLS_HG_ID "hgid: ${TOOLS_HG_ID}")
else (MERCURIAL_FOUND AND IS_DIRECTORY ${TOP_SOURCE_DIR}/.hg)
  set (TOOLS_HG_ID)
endif (MERCURIAL_FOUND AND IS_DIRECTORY ${TOP_SOURCE_DIR}/.hg)
set (HG_HEADER "hgversion.h")
set (NEW_HG_HEADER "new_hgversion.h")
file(WRITE ${NEW_HG_HEADER} "static const std::string hgversion = \"${TOOLS_HG_ID}\";\n")
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${NEW_HG_HEADER} ${HG_HEADER})
execute_process(COMMAND ${CMAKE_COMMAND} -E remove ${NEW_HG_HEADER})