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configure_file: Test that CMake re-runs on input change or output missing 

With the Makefile generators we expect that touching or modifying the
input file of a configure_file, or removing its output, will cause CMake
to re-run on the next build.  Extend the RunCMake.configure_file test
with a case covering this.  Also check that CMake does not re-run if
nothing has changed.
This commit is contained in:
Brad King 2015-01-23 10:02:04 -05:00
parent daf95a3827
commit 7f2dc8dc54
6 changed files with 50 additions and 0 deletions
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1
Tests/RunCMake/configure_file/RerunCMake-rerun-stderr.txt Normal file
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@ -0,0 +1 @@
^Running CMake on RerunCMake$

3
Tests/RunCMake/configure_file/RerunCMake-rerun-stdout.txt Normal file
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@ -0,0 +1,3 @@
-- Configuring done
-- Generating done
-- Build files have been written to: .*/Tests/RunCMake/configure_file/RerunCMake-build

1
Tests/RunCMake/configure_file/RerunCMake-stderr.txt Normal file
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@ -0,0 +1 @@
^Running CMake on RerunCMake$

3
Tests/RunCMake/configure_file/RerunCMake-stdout.txt Normal file
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@ -0,0 +1,3 @@
-- Configuring done
-- Generating done
-- Build files have been written to: .*/Tests/RunCMake/configure_file/RerunCMake-build

8
Tests/RunCMake/configure_file/RerunCMake.cmake Normal file
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@ -0,0 +1,8 @@
message("Running CMake on RerunCMake") # write to stderr if cmake reruns
configure_file(
"${CMAKE_CURRENT_BINARY_DIR}/ConfigureFileInput.txt.in"
"${CMAKE_CURRENT_BINARY_DIR}/ConfigureFileOutput.txt"
@ONLY
)
# make sure CMakeCache.txt is newer than ConfigureFileOutput.txt
execute_process(COMMAND ${CMAKE_COMMAND} -E sleep 1)

34
Tests/RunCMake/configure_file/RunCMakeTest.cmake
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@ -7,3 +7,37 @@ run_cmake(UTF16BE-BOM)
run_cmake(UTF32LE-BOM)
run_cmake(UTF32BE-BOM)
run_cmake(UnknownArg)
if(RunCMake_GENERATOR MATCHES "Make")
# Use a single build tree for a few tests without cleaning.
set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/RerunCMake-build)
set(RunCMake_TEST_NO_CLEAN 1)
file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
set(in_conf "${RunCMake_TEST_BINARY_DIR}/ConfigureFileInput.txt.in")
file(WRITE "${in_conf}" "1")
message(STATUS "RerunCMake: first configuration...")
run_cmake(RerunCMake)
run_cmake_command(RerunCMake-nowork ${CMAKE_COMMAND} --build .)
execute_process(COMMAND ${CMAKE_COMMAND} -E sleep 1) # handle 1s resolution
message(STATUS "RerunCMake: touch configure_file input...")
file(WRITE "${in_conf}" "1")
run_cmake_command(RerunCMake-rerun ${CMAKE_COMMAND} --build .)
run_cmake_command(RerunCMake-nowork ${CMAKE_COMMAND} --build .)
execute_process(COMMAND ${CMAKE_COMMAND} -E sleep 1) # handle 1s resolution
message(STATUS "RerunCMake: modify configure_file input...")
file(WRITE "${in_conf}" "2")
run_cmake_command(RerunCMake-rerun ${CMAKE_COMMAND} --build .)
run_cmake_command(RerunCMake-nowork ${CMAKE_COMMAND} --build .)
message(STATUS "RerunCMake: remove configure_file output...")
file(REMOVE "${RunCMake_TEST_BINARY_DIR}/ConfigureFileOutput.txt")
run_cmake_command(RerunCMake-rerun ${CMAKE_COMMAND} --build .)
run_cmake_command(RerunCMake-nowork ${CMAKE_COMMAND} --build .)
unset(RunCMake_TEST_BINARY_DIR)
unset(RunCMake_TEST_NO_CLEAN)
endif()