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Fix finding .git directory in CMake when z3 is a submodule of some other repository (#4850)

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* Fix finding .git directory in CMake when z3 is a submodule of some other repository

* Check that z3 is a submodule
This commit is contained in:
Alexey Vishnyakov 2020-12-06 05:27:35 +03:00 • committed by GitHub
parent b0cecf7747
commit 0c93c7ae03
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1 changed files with 13 additions and 4 deletions
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17
cmake/git_utils.cmake
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@ -34,11 +34,20 @@ function(add_git_dir_dependency GIT_DOT_FILE SUCCESS_VAR)
# Figure out where real git directory lives
set(GIT_COMMON_DIR_FILE "${GIT_WORKTREE_DIR}/commondir")
if (NOT EXISTS "${GIT_COMMON_DIR_FILE}")
message(FATAL_ERROR "Found git worktree dir but could not find \"${GIT_COMMON_DIR_FILE}\"")
get_filename_component(GIT_WORKTREE_PARENT "${GIT_WORKTREE_DIR}" DIRECTORY)
get_filename_component(GIT_WORKTREE_PARENT "${GIT_WORKTREE_PARENT}" NAME)
if ("${GIT_WORKTREE_PARENT}" STREQUAL "modules")
# Z3 is a git submodule
set(GIT_HEAD_FILE "${CMAKE_SOURCE_DIR}/${GIT_HEAD_FILE}")
set(GIT_DIR "${CMAKE_SOURCE_DIR}/${GIT_WORKTREE_DIR}")
else()
message(FATAL_ERROR "Found git worktree dir but could not find \"${GIT_COMMON_DIR_FILE}\"")
endif()
else()
file(READ "${GIT_COMMON_DIR_FILE}" GIT_COMMON_DIR_FILE_DATA LIMIT 512)
string(STRIP "${GIT_COMMON_DIR_FILE_DATA}" GIT_COMMON_DIR_FILE_DATA_STRIPPED)
get_filename_component(GIT_DIR "${GIT_WORKTREE_DIR}/${GIT_COMMON_DIR_FILE_DATA_STRIPPED}" ABSOLUTE)
endif()
file(READ "${GIT_COMMON_DIR_FILE}" GIT_COMMON_DIR_FILE_DATA LIMIT 512)
string(STRIP "${GIT_COMMON_DIR_FILE_DATA}" GIT_COMMON_DIR_FILE_DATA_STRIPPED)
get_filename_component(GIT_DIR "${GIT_WORKTREE_DIR}/${GIT_COMMON_DIR_FILE_DATA_STRIPPED}" ABSOLUTE)
if (NOT IS_DIRECTORY "${GIT_DIR}")
message(FATAL_ERROR "Failed to compute path to git directory from git worktree")
endif()