cmake: accommodate for UNIT_TEST_SOURCES

[dscho]

This fix is needed to build Git using CMake in the wake of the recent migration of the reftable tests from being regression tests written in Unix shell script to being unit tests in pure C.

[dscho]

/submit

[gitgitgadget]

Submitted as [email protected]

To fetch this version into FETCH_HEAD:

git fetch https://github.com/gitgitgadget/git/ pr-1947/dscho/reftable-vs-cmake-v1

To fetch this version to local tag pr-1947/dscho/reftable-vs-cmake-v1:

git fetch --no-tags https://github.com/gitgitgadget/git/ tag pr-1947/dscho/reftable-vs-cmake-v1

[dscho]

/preview

[gitgitgadget]

Preview email sent as [email protected]

[gitgitgadget]

On the Git mailing list, Johannes Schindelin wrote (reply to this):

Hi Junio,

this patch is still required; I sent this before -rc0 was released so that
it could be included in v2.51.0 final. Could you please still merge it?

Thanks,
Johannes

On Sun, 3 Aug 2025, Johannes Schindelin via GitGitGadget wrote:

> From: Johannes Schindelin <[email protected]>
> 
> As part of 9bbc981c6f2 (t/unit-tests: finalize migration of
> reftable-related tests, 2025-07-24), the explicit list of
> `UNIT_TEST_PROGRAMS` was turned into a wildcard pattern-derived list.
> 
> Let's do the same in the CMake definition.
> 
> This fixes build errors with symptoms like this:
> 
>   CMake Error at CMakeLists.txt:132 (string):
>     string sub-command REPLACE requires at least four arguments.
>   Call Stack (most recent call first):
>     CMakeLists.txt:1037 (parse_makefile_for_scripts)
> 
> Signed-off-by: Johannes Schindelin <[email protected]>
> ---
>     cmake: accommodate for UNIT_TEST_SOURCES
>     
>     This fix is needed to build Git using CMake in the wake of the recent
>     migration of the reftable tests from being regression tests written in
>     Unix shell script to being unit tests in pure C.
> 
> Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1947%2Fdscho%2Freftable-vs-cmake-v1
> Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1947/dscho/reftable-vs-cmake-v1
> Pull-Request: https://github.com/gitgitgadget/git/pull/1947
> 
>  contrib/buildsystems/CMakeLists.txt | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
> index 25b495fa737..edb0fc04ad7 100644
> --- a/contrib/buildsystems/CMakeLists.txt
> +++ b/contrib/buildsystems/CMakeLists.txt
> @@ -1005,7 +1005,9 @@ parse_makefile_for_sources(clar-test_SOURCES ${CMAKE_SOURCE_DIR}/Makefile "CLAR_
>  list(TRANSFORM clar-test_SOURCES REPLACE "\\$\\(UNIT_TEST_DIR\\)/" "${CMAKE_SOURCE_DIR}/t/unit-tests/")
>  add_library(clar-test-lib STATIC ${clar-test_SOURCES})
>  
> -parse_makefile_for_scripts(unit_test_PROGRAMS "UNIT_TEST_PROGRAMS" "")
> +file(GLOB unit_test_PROGRAMS "${CMAKE_SOURCE_DIR}/t/unit-tests/t-*.c")
> +list(TRANSFORM unit_test_PROGRAMS REPLACE "${CMAKE_SOURCE_DIR}/" "")
> +list(TRANSFORM unit_test_PROGRAMS REPLACE ".c" "")
>  foreach(unit_test ${unit_test_PROGRAMS})
>  	add_executable("${unit_test}" "${CMAKE_SOURCE_DIR}/t/unit-tests/${unit_test}.c")
>  	target_link_libraries("${unit_test}" unit-test-lib clar-test-lib common-main)
> 
> base-commit: 866e6a391f466baeeb98bc585845ea638322c04b
> -- 
> gitgitgadget
> 
>