From: Johannes Schindelin <johannes.schindelin@xxxxxx>
In 7f5397a07c6c (cmake: support for testing git when building out of the
source tree, 2020-06-26), we implemented support for running Git's test
scripts even after building Git in a different directory than the source
directory.
The way we did this was to edit the file `t/test-lib.sh` to override
`GIT_BUILD_DIR` to point somewhere else than the parent of the `t/`
directory.
This is unideal because it always leaves a tracked file marked as
modified, and it is all too easy to commit that change by mistake.
Let's change the strategy by teaching `t/test-lib.sh` to detect the
presence of a file called `GIT-BUILD-DIR` in the source directory. If it
exists, the contents are interpreted as the location to the _actual_
build directory. We then write this file as part of the CTest
definition.
To support building Git via a regular `make` invocation after building
it using CMake, we ensure that the `GIT-BUILD-DIR` file is deleted (for
convenience, this is done as part of the Makefile rule that is already
run with every `make` invocation to ensure that `GIT-BUILD-OPTIONS` is
up to date).
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
.gitignore | 1 +
Makefile | 1 +
contrib/buildsystems/CMakeLists.txt | 7 +------
t/test-lib.sh | 10 ++++++++++
4 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/.gitignore b/.gitignore
index 73df7295795..89ad7e68b4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
/fuzz_corpora
+/GIT-BUILD-DIR
/GIT-BUILD-OPTIONS
/GIT-CFLAGS
/GIT-LDFLAGS
diff --git a/Makefile b/Makefile
index 88178c5b466..886614340c7 100644
--- a/Makefile
+++ b/Makefile
@@ -3029,6 +3029,7 @@ else
@echo RUNTIME_PREFIX=\'false\' >>$@+
endif
@if cmp $@+ $@ >/dev/null 2>&1; then $(RM) $@+; else mv $@+ $@; fi
+ @if test -f GIT-BUILD-DIR; then rm GIT-BUILD-DIR; fi
### Detect Python interpreter path changes
ifndef NO_PYTHON
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
index 0c741e7d878..1d8cebb4cfe 100644
--- a/contrib/buildsystems/CMakeLists.txt
+++ b/contrib/buildsystems/CMakeLists.txt
@@ -1067,14 +1067,9 @@ endif()
#Make the tests work when building out of the source tree
get_filename_component(CACHE_PATH ${CMAKE_CURRENT_LIST_DIR}/../../CMakeCache.txt ABSOLUTE)
if(NOT ${CMAKE_BINARY_DIR}/CMakeCache.txt STREQUAL ${CACHE_PATH})
- file(RELATIVE_PATH BUILD_DIR_RELATIVE ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR}/CMakeCache.txt)
- string(REPLACE "/CMakeCache.txt" "" BUILD_DIR_RELATIVE ${BUILD_DIR_RELATIVE})
#Setting the build directory in test-lib.sh before running tests
file(WRITE ${CMAKE_BINARY_DIR}/CTestCustom.cmake
- "file(STRINGS ${CMAKE_SOURCE_DIR}/t/test-lib.sh GIT_BUILD_DIR_REPL REGEX \"GIT_BUILD_DIR=(.*)\")\n"
- "file(STRINGS ${CMAKE_SOURCE_DIR}/t/test-lib.sh content NEWLINE_CONSUME)\n"
- "string(REPLACE \"\${GIT_BUILD_DIR_REPL}\" \"GIT_BUILD_DIR=\\\"$TEST_DIRECTORY/../${BUILD_DIR_RELATIVE}\\\"\" content \"\${content}\")\n"
- "file(WRITE ${CMAKE_SOURCE_DIR}/t/test-lib.sh \${content})")
+ "file(WRITE ${CMAKE_SOURCE_DIR}/GIT-BUILD-DIR \"${CMAKE_BINARY_DIR}\")")
#misc copies
file(COPY ${CMAKE_SOURCE_DIR}/t/chainlint.sed DESTINATION ${CMAKE_BINARY_DIR}/t/)
file(COPY ${CMAKE_SOURCE_DIR}/po/is.po DESTINATION ${CMAKE_BINARY_DIR}/po/)
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 120f11812c3..dfc0144ed3b 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -47,6 +47,16 @@ then
echo "PANIC: Running in a $TEST_DIRECTORY that doesn't end in '/t'?" >&2
exit 1
fi
+if test -f "$GIT_BUILD_DIR/GIT-BUILD-DIR"
+then
+ GIT_BUILD_DIR="$(cat "$GIT_BUILD_DIR/GIT-BUILD-DIR")" || exit 1
+ # On Windows, we must convert Windows paths lest they contain a colon
+ case "$(uname -s)" in
+ *MINGW*)
+ GIT_BUILD_DIR="$(cygpath -au "$GIT_BUILD_DIR")"
+ ;;
+ esac
+fi
# Prepend a string to a VAR using an arbitrary ":" delimiter, not
# adding the delimiter if VAR or VALUE is empty. I.e. a generalized:
--
gitgitgadget
