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RocksDB for Erlang

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rocksdb deps snappy third_party benchmark cmake GetGitVersion.cmake
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deps/snappy/third_party/benchmark/cmake/GetGitVersion.cmake 

# - Returns a version string from Git tags

#

# This function inspects the annotated git tags for the project and returns a string

# into a CMake variable

#

#  get_git_version(<var>)

#

# - Example

#

# include(GetGitVersion)

# get_git_version(GIT_VERSION)

#

# Requires CMake 2.8.11+

find_package(Git)



if(__get_git_version)

  return()

endif()

set(__get_git_version INCLUDED)



function(get_git_version var)

  if(GIT_EXECUTABLE)

      execute_process(COMMAND ${GIT_EXECUTABLE} describe --tags --match "v[0-9]*.[0-9]*.[0-9]*" --abbrev=8

          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}

          RESULT_VARIABLE status

          OUTPUT_VARIABLE GIT_DESCRIBE_VERSION

          ERROR_QUIET)

      if(status)

          set(GIT_DESCRIBE_VERSION "v0.0.0")

      endif()

      

      string(STRIP ${GIT_DESCRIBE_VERSION} GIT_DESCRIBE_VERSION)

      if(GIT_DESCRIBE_VERSION MATCHES v[^-]*-) 

         string(REGEX REPLACE "v([^-]*)-([0-9]+)-.*" "\\1.\\2"  GIT_VERSION ${GIT_DESCRIBE_VERSION})

      else()

         string(REGEX REPLACE "v(.*)" "\\1" GIT_VERSION ${GIT_DESCRIBE_VERSION})

      endif()



      # Work out if the repository is dirty

      execute_process(COMMAND ${GIT_EXECUTABLE} update-index -q --refresh

          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}

          OUTPUT_QUIET

          ERROR_QUIET)

      execute_process(COMMAND ${GIT_EXECUTABLE} diff-index --name-only HEAD --

          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}

          OUTPUT_VARIABLE GIT_DIFF_INDEX

          ERROR_QUIET)

      string(COMPARE NOTEQUAL "${GIT_DIFF_INDEX}" "" GIT_DIRTY)

      if (${GIT_DIRTY})

          set(GIT_DESCRIBE_VERSION "${GIT_DESCRIBE_VERSION}-dirty")

      endif()

      message(STATUS "git version: ${GIT_DESCRIBE_VERSION} normalized to ${GIT_VERSION}")

  else()

      set(GIT_VERSION "0.0.0")

  endif()



  set(${var} ${GIT_VERSION} PARENT_SCOPE)

endfunction()