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cmake: support git worktree

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Use rev-parse to get the HEAD directory instead of manually looking for
it. This method works in the main repository, worktrees and submodules.

Closes https://github.com/espressif/esp-idf/issues/4136
This commit is contained in:
Renz Christian Bagaporo 2019-11-04 20:19:13 +08:00
parent 308e4fcce1
commit e4137cc6ca
2 changed files with 88 additions and 79 deletions
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8
tools/ci/test_build_system_cmake.sh
View File

@ -554,6 +554,14 @@ endmenu\n" >> ${IDF_PATH}/Kconfig;
mv CMakeLists.txt.bak CMakeLists.txt
rm -rf CMakeLists.txt.bak
print_status "Supports git worktree"
clean_build_dir
git branch test_build_system
git worktree add ../esp-idf-template-test test_build_system
diff <(idf.py reconfigure | grep "Project version") <(cd ../esp-idf-template-test && idf.py reconfigure | grep "Project version") \
|| failure "Version on worktree should have been properly resolved"
git worktree remove ../esp-idf-template-test
print_status "All tests completed"
if [ -n "${FAILURES}" ]; then
echo "Some failures were detected:"

37
tools/cmake/third_party/GetGitRevisionDescription.cmake vendored
View File

@ -43,26 +43,25 @@ set(__get_git_revision_description YES)
get_filename_component(_gitdescmoddir ${CMAKE_CURRENT_LIST_FILE} PATH)
function(get_git_head_revision _refspecvar _hashvar _repo_dir)
set(GIT_PARENT_DIR "${_repo_dir}")
set(GIT_DIR "${GIT_PARENT_DIR}/.git")
while(NOT EXISTS "${GIT_DIR}") # .git dir not found, search parent directories
set(GIT_PREVIOUS_PARENT "${GIT_PARENT_DIR}")
get_filename_component(GIT_PARENT_DIR ${GIT_PARENT_DIR} PATH)
if(GIT_PARENT_DIR STREQUAL GIT_PREVIOUS_PARENT)
# We have reached the root directory, we are not in git
set(${_refspecvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
set(${_hashvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
execute_process(COMMAND
"${GIT_EXECUTABLE}"
rev-parse
--git-dir
WORKING_DIRECTORY
${_repo_dir}
RESULT_VARIABLE
res
OUTPUT_VARIABLE
GIT_DIR
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT res EQUAL 0)
return()
endif()
set(GIT_DIR "${GIT_PARENT_DIR}/.git")
endwhile()
# check if this is a submodule
if(NOT IS_DIRECTORY ${GIT_DIR})
file(READ ${GIT_DIR} submodule)
string(REGEX REPLACE "gitdir: (.*)\n$" "\\1" GIT_DIR_RELATIVE ${submodule})
get_filename_component(SUBMODULE_DIR ${GIT_DIR} PATH)
get_filename_component(GIT_DIR ${SUBMODULE_DIR}/${GIT_DIR_RELATIVE} ABSOLUTE)
endif()
get_filename_component(GIT_DIR "${GIT_DIR}" ABSOLUTE BASE_DIR "${_repo_dir}")
set(GIT_DATA "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/git-data")
if(NOT EXISTS "${GIT_DATA}")
file(MAKE_DIRECTORY "${GIT_DATA}")
@ -71,6 +70,7 @@ function(get_git_head_revision _refspecvar _hashvar _repo_dir)
if(NOT EXISTS "${GIT_DIR}/HEAD")
return()
endif()
set(HEAD_FILE "${GIT_DATA}/HEAD")
configure_file("${GIT_DIR}/HEAD" "${HEAD_FILE}" COPYONLY)
@ -95,6 +95,7 @@ function(git_describe _var _repo_dir)
if(NOT hash)
set(${_var} "HEAD-HASH-NOTFOUND" PARENT_SCOPE)
return()
endif()
# TODO sanitize