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[CMake] Update GetSVN.cmake to handle repo

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Summary:
When repo is used with git, 'clang --version' option does not display
the correct revision information (i.e. git hash on TOP) as the following:

clang version 6.0.0 --->
clang version 6.0.0 (clang version) (llvm version)

This is because repo also creates .git/svn folder as git-svn does and
this makes repo with git uses "git svn info" command, which is only for
git-svn, to retrieve its revision information, making null for the info.
To correctly distinguish between git-svn and repo with git, the folder
hierarchy to specify for git-svn should be .git/svn/refs as the "git svn
info" command depends on the revision data in .git/svn/refs. This patch
in turn makes repo with git passes through to the third macro,
get_source_info_git, in  get_source_info function, resulting in correctly
retrieving the revision information for repo with git using "git log ..."
command.

This patch is tested with git, svn, git-svn, and repo with git.

Reviewers: llvm-commits, probinson, rnk

Reviewed By: rnk

Subscribers: rnk, mehdi_amini, beanz, mgorny

Differential Revision: https://reviews.llvm.org/D35532

llvm-svn: 312864
This commit is contained in:
MinSeong Kim 2017-09-09 14:17:52 +00:00
parent fa64325142
commit 6b3d855c39
1 changed files with 1 additions and 1 deletions
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2
cmake/modules/GetSVN.cmake
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@ -84,7 +84,7 @@ endmacro()
function(get_source_info path revision repository)
if (EXISTS "${path}/.svn")
get_source_info_svn("${path}" revision repository)
elseif (EXISTS "${path}/.git/svn")
elseif (EXISTS "${path}/.git/svn/refs")
get_source_info_git_svn("${path}" revision repository)
elseif (EXISTS "${path}/.git")
get_source_info_git("${path}" revision repository)