[Xen-devel] Changeset / commit id not incorporated in build after switch to git

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hi All,

After the switching from mercurial to git, the changeset isn't incorporated 
anymore in the build.
This makes error reports possibly a bit less verbose (xl dmesg, serial logs and 
xl info now omit the changeset (or commit) info)

Git doesn't have the concept of changesets afaik and mercurial is, while 
deprecated, still used as mirror.

So what would be wise:
   - just replace the changeset with the git commit sha-1 hash (always)
   - use changeset when a mercurial tree is detected or the last git commit 
sha-1 (and date ?) when a git tree is detected
   - make a separate "commit" entry besides the changeset and leave one 
undefined

xen/Makefile currently has:

# compile.h contains dynamic build info. Rebuilt on every 'make' invocation.
include/xen/compile.h: include/xen/compile.h.in .banner
        @sed -e 's/@@date@@/$(shell LC_ALL=C date)/g' \
            -e 's/@@time@@/$(shell LC_ALL=C date +%T)/g' \
            -e 's/@@whoami@@/$(XEN_WHOAMI)/g' \
            -e 's/@@domain@@/$(XEN_DOMAIN)/g' \
            -e 's/@@hostname@@/$(shell hostname)/g' \
            -e 's!@@compiler@@!$(shell $(CC) $(CFLAGS) --version 2>&1 | head 
-1)!g' \
            -e 's/@@version@@/$(XEN_VERSION)/g' \
            -e 's/@@subversion@@/$(XEN_SUBVERSION)/g' \
            -e 's/@@extraversion@@/$(XEN_EXTRAVERSION)/g' \
            -e 's!@@changeset@@!$(shell ((hg parents --template "{date|date} 
{rev}:{node|short}" >/dev/null && hg parents --template "{date|date} 
{rev}:{node|short}") || echo "unavailable") 2>/dev/null)!g' \
            < include/xen/compile.h.in > $@.new
        @grep \" .banner >> $@.new
        @grep -v \" .banner
        @mv -f $@.new $@

--
Sander


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