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cmake: really stop at top of source code tree

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Previously, we were recursing right up to /

Patch submitted by Tony Davies via https://tracker.ceph.com

Fixes: https://tracker.ceph.com/issues/43895
Signed-off-by: Tony Davies <anthony.t.davies@gmail.com>
This commit is contained in:
Nathan Cutler 2020-04-02 12:02:37 +02:00
parent b2d160468f
commit 0437adc33a
1 changed files with 3 additions and 2 deletions
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5
cmake/modules/GetGitRevisionDescription.cmake
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@ -42,11 +42,12 @@ get_filename_component(_gitdescmoddir ${CMAKE_CURRENT_LIST_FILE} PATH)
function(get_git_head_revision _refspecvar _hashvar)
set(GIT_PARENT_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
set(GIT_DIR "${GIT_PARENT_DIR}/.git")
set(TOP_LEVEL_DIR "${CMAKE_SOURCE_DIR}")
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 ${GIT_PARENT_DIR} PATH)
if(GIT_PARENT_DIR STREQUAL GIT_PREVIOUS_PARENT)
# We have reached the root directory, we are not in git
if(GIT_PARENT_DIR STREQUAL TOP_LEVEL_DIR)
# We have reached the top of the source tree, we are not in git
set(${_refspecvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
set(${_hashvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
return()