File: check.cmake

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cmake 3.25.1-1
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# Give Git access to the real home directory to get user's settings.
if(DEFINED ENV{CTEST_REAL_HOME})
  set(ENV{HOME} "$ENV{CTEST_REAL_HOME}")
endif()

execute_process(
  COMMAND "${GIT_EXECUTABLE}" status
  WORKING_DIRECTORY "${CMake_SOURCE_DIR}"
  OUTPUT_VARIABLE output
  ERROR_VARIABLE output
  RESULT_VARIABLE result
  )
string(REPLACE "\n" "\n  " output "  ${output}")
if(NOT result EQUAL 0)
  message(FATAL_ERROR "'git status' failed (${result}):\n${output}")
endif()

if(output MATCHES "\n[ \t#]*(Changes |new file:|modified:|Untracked )")
  message(FATAL_ERROR "The source tree is not clean.  'git status' reports:\n${output}")
endif()

message(STATUS "The source tree is clean.")