From 44084aa98147cce8fc3cf598f9b9da1f97b20689 Mon Sep 17 00:00:00 2001 From: Thomas De Schampheleire Date: Wed, 30 Jan 2019 21:15:08 +0100 Subject: [PATCH] support/scripts/setlocalversion: ignore user settings for Mercurial setlocalversion will use 'hg id' to determine whether or not the current revision is tagged. If there is no tag, the Mercurial revision is printed, otherwise nothing is printed. The problem is that the user may have custom configuration settings (in their ~/.hgrc file or similar) that changes the output of 'hg id' in a way that the script does not expect. In such cases, the Mercurial revision may not be printed or printed incorrectly. It is good practice to ignore the user environment when calling Mercurial commands from a well-defined script, by setting the environment variable HGRCPATH to the empty string. See also 'hg help environment'. In the particular case of Nokia, a custom extension adds dynamic tags in the repository, i.e. tags that are stored in a file external to the repository and only visible when the extension is active. These tags should not influence the behavior of setlocalversion as they are not official Buildroot tags, i.e. even if a revision is tagged, the Mercurial revision should still be printed. Note that this still does not solve the problem where an organization adds _real_ tags in their Buildroot repository. For example, there might be a moving tag 'last-validated' or tags indicating in which product release that Buildroot revision was used. In these cases, setlocalversion will still not behave as expected, i.e. show the Mercurial revision. Signed-off-by: Thomas De Schampheleire Signed-off-by: Thomas Petazzoni --- support/scripts/setlocalversion | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/support/scripts/setlocalversion b/support/scripts/setlocalversion index 45f4283bb1..b39b751f03 100755 --- a/support/scripts/setlocalversion +++ b/support/scripts/setlocalversion @@ -53,7 +53,7 @@ if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then fi # Check for mercurial and a mercurial repo. -if hgid=`hg id --id --tags 2>/dev/null`; then +if hgid=`HGRCPATH= hg id --id --tags 2>/dev/null`; then tag=`printf '%s' "$hgid" | cut -d' ' -f2 --only-delimited` # Do we have an untagged version?