[0/6] cmake: guard OS-specific code & cleanup & chmod +x on *nix

Message

Ævar Arnfjörð Bjarmason Dec. 19, 2022, 6:39 p.m. UTC

As with [1] and [2] submitted today these are extracted from the
ejected [2]. This is independent from [1] and [2]. These are all the
cmake changes I'll be submitting for now.

This series:

 - Cleans up some dead code in the recipe (1/6)
 - Adds a missing USE_LIBPCRE2 to GIT-BUILD-OPTIONS. We didn't see
   failures due to this because the win+VS job doesn't build with
   libpcre2 (2/6)
 - Wraps Windows-specific code in "if" checks for that platform
   (3-4/6). We already support cmake on *nix, this makes it clearer
   which bits are OS-specific
 - We had failing p4 tests due to omitting copying over
   git-p4.py. This is anotehr case where we didn't see a failure
   because the "win+VS" job doesn't test that part.
 - Do a "chmod +x" of the bin-wrappers, Windows didn't care, but on
   *nix running the tests would fail *a lot* due to this.

All in all on my *nix box this brings us from:

	80% tests passed, 194 tests failed out of 983

To:

	99% tests passed, 3 tests failed out of 983

The remaining failures are due to "gitweb" being broken, but that's a
general known shortcoming of the "cmake" recipe (which again, isn't
spotted by "win+VS" in CI because it skips those tests).

The remaining bits in [3] will get us to 100% passing. I still think
those are worthwhile, but there were some outstanding concerns about
them (e.g. changing how "GIT-BUILD-DIR" worked, and adding a *nix CI
job for cmake).

I don't think there's any outstanding comments or known or potential
concerns/breakages with these changes that have to be addressed, these
are all straightforward fixes.

CI & branch for this at [4] (where I have it on top of [1] and [2])

1. https://lore.kernel.org/git/[e-mail]
2. https://lore.kernel.org/git/[e-mail]/
3. https://lore.kernel.org/git/[e-mail]/
4. https://github.com/avar/git/tree/avar/cmake-flags-and-os-specific

Ævar Arnfjörð Bjarmason (6):
  cmake: don't copy chainlint.pl to build directory
  cmake: set "USE_LIBPCRE2" in "GIT-BUILD-OPTIONS" for test-lib.sh
  cmake: increase test timeout on Windows only
  cmake: only look for "sh" in "C:/Program Files" on Windows
  cmake: copy over git-p4.py for t983[56] perforce test
  cmake: chmod +x the bin-wrappers/* & SCRIPT_{SH,PERL} & git-p4

 contrib/buildsystems/CMakeLists.txt | 55 +++++++++++++++++++++--------
 1 file changed, 41 insertions(+), 14 deletions(-)

Range-diff:
 1:  fc190b379cd <  -:  ----------- cmake: don't invoke msgfmt with --statistics
 2:  1a11aa233a3 <  -:  ----------- cmake: use "-S" and "-B" to specify source and build directories
 3:  b9ddb5db1d3 <  -:  ----------- cmake: update instructions for portable CMakeLists.txt
 4:  7b7850c00ee =  1:  95a6ce2f1c7 cmake: don't copy chainlint.pl to build directory
 7:  973c8038f54 =  2:  a1653607aaf cmake: set "USE_LIBPCRE2" in "GIT-BUILD-OPTIONS" for test-lib.sh
12:  4905ce5321d !  3:  2b5a9d2c628 cmake: increase test timeout on Windows only
    @@ Commit message
         Signed-off-by: Ævar Arnfjörð Bjarmason <[e-mail]>
     
      ## contrib/buildsystems/CMakeLists.txt ##
    -@@ contrib/buildsystems/CMakeLists.txt: if(NOT GIT_CTEST_SETS_BUILD_DIR)
    - endif()
    +@@ contrib/buildsystems/CMakeLists.txt: foreach(tsh ${test_scipts})
    + 		WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/t)
      endforeach()
      
     -# This test script takes an extremely long time and is known to time out even
13:  6c6b530965d =  4:  c23f659c054 cmake: only look for "sh" in "C:/Program Files" on Windows
14:  563f1b9b045 !  5:  70a7f3e19b2 cmake: copy over git-p4.py for t983[56] perforce test
    @@ contrib/buildsystems/CMakeLists.txt
     @@ contrib/buildsystems/CMakeLists.txt: endforeach()
      file(STRINGS ${CMAKE_SOURCE_DIR}/git-p4.py content NEWLINE_CONSUME)
      string(REPLACE "#!/usr/bin/env python" "#!/usr/bin/python" content "${content}")
    - write_script(${CMAKE_BINARY_DIR}/git-p4 "${content}")
    + file(WRITE ${CMAKE_BINARY_DIR}/git-p4 ${content})
     +file(COPY ${CMAKE_SOURCE_DIR}/git-p4.py DESTINATION ${CMAKE_BINARY_DIR}/)
      
      #perl modules
 5:  82ecb797915 !  6:  3724cad82e0 cmake: chmod +x the bin-wrappers/* & SCRIPT_{SH,PERL} & git-p4
    @@ contrib/buildsystems/CMakeLists.txt: foreach(script ${git_perl_scripts})
      string(REPLACE "#!/usr/bin/env python" "#!/usr/bin/python" content "${content}")
     -file(WRITE ${CMAKE_BINARY_DIR}/git-p4 ${content})
     +write_script(${CMAKE_BINARY_DIR}/git-p4 "${content}")
    + file(COPY ${CMAKE_SOURCE_DIR}/git-p4.py DESTINATION ${CMAKE_BINARY_DIR}/)
      
      #perl modules
    - file(GLOB_RECURSE perl_modules "${CMAKE_SOURCE_DIR}/perl/*.pm")
     @@ contrib/buildsystems/CMakeLists.txt: foreach(script ${wrapper_scripts})
      	file(STRINGS ${CMAKE_SOURCE_DIR}/wrap-for-bin.sh content NEWLINE_CONSUME)
      	string(REPLACE "@@BUILD_DIR@@" "${CMAKE_BINARY_DIR}" content "${content}")
 6:  1f326944a07 <  -:  ----------- cmake & test-lib.sh: add a $GIT_SOURCE_DIR variable
 8:  b8448c7a8a6 <  -:  ----------- Makefile + test-lib.sh: don't prefer cmake-built to make-built git
 9:  5135e40969e <  -:  ----------- test-lib.sh: support a "GIT_TEST_BUILD_DIR"
10:  65204463730 <  -:  ----------- cmake: optionally be able to run tests before "ctest"
11:  e25992b16f1 <  -:  ----------- cmake: support GIT_TEST_OPTS, abstract away WIN32 defaults
15:  917a884eb65 <  -:  ----------- CI: add a "linux-cmake-test" to run cmake & ctest on linux