[Rd] [PATCH v2] Makefile: add support for git svn clones

[Felipe Balbi]

git has an interface for cloning SVN repositories into git which
some users might decide to use. For those users' surprise, the
repository will always fail to build on svnonly target and it will
exit early.

The problem is simple enough to fix by just checking if a .git
directory exists in top_builddir and, if so, call git svn info insstead
of svn info.

Note, however, that this only supports Linux (and possibly Mac) users,
as I have no means of writing/testing an equivalent patch for the
Windows Makefiles.

Signed-off-by: Felipe Balbi <balbi at kernel.org>
---

Due to lack of a Windows system, this has only been tested on my linux
box, if someone could give this a whirl on windows and Mac OS X, I'd be
really glad.

cheers

 Makefile.in              | 5 ++++-
 src/include/Makefile.win | 7 +++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 44b0a3b4b99f..10415abd442b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -9,6 +9,9 @@ top_builddir = .
 
 include $(top_builddir)/Makeconf
 
+GIT := `if [ -d "$(top_builddir)/.git" ]; then \
+	echo "git"; fi`
+
 distdir = $(PACKAGE)-$(VERSION)
 INSTFILES = COPYING
 NON_SVN_INSTFILES = SVN-REVISION
@@ -104,7 +107,7 @@ svnonly:
 	@if test ! -f "$(srcdir)/doc/FAQ" || test -f non-tarball ; then \
 	  (cd doc/manual && $(MAKE) front-matter html-non-svn) ; \
 	  touch non-tarball ; \
-	  (cd $(srcdir); LC_ALL=C TZ=GMT svn info || $(ECHO) "Revision: -99") 2> /dev/null \
+	  (cd $(srcdir); LC_ALL=C TZ=GMT $(GIT) svn info || $(ECHO) "Revision: -99") 2> /dev/null \
 	    | sed -n -e '/^Revision/p' -e '/^Last Changed Date/'p \
 	    | cut -d' ' -f1,2,3,4 > SVN-REVISION-tmp ; \
 	  if test "`cat SVN-REVISION-tmp`" = "Revision: -99"; then \
diff --git a/src/include/Makefile.win b/src/include/Makefile.win
index 28361ef9cfa3..d81941f80f4f 100644
--- a/src/include/Makefile.win
+++ b/src/include/Makefile.win
@@ -2,6 +2,9 @@
 include ../gnuwin32/MkRules
 R_HOME = ../..
 
+GIT := `if [ -d "$(top_builddir)/.git" ]; then \
+	echo "git"; fi`
+
 VER = $(shell sed -e 's/\([^ ]*\).*/\1/' ../../VERSION)
 
 ## keep these in step with ./Makefile.in
@@ -67,14 +70,14 @@ ifdef USE_SVNVERSION
 	@LC_ALL=C svnversion ../.. | sed -n 's/^/Revision: /p' > svn-tmp || rm -f svn-tmp
 	@grep -v exported svn-tmp > /dev/null || rm -f svn-tmp
 else
-	@(cd ../..; LC_ALL=C svn info || echo "Revision: unknown") 2> /dev/null \
+	@(cd ../..; LC_ALL=C $(GIT) svn info || echo "Revision: unknown") 2> /dev/null \
 	  | sed -n '/^Revision/p' > svn-tmp
 	@if grep unknown svn-tmp > /dev/null ; then \
 	  rm svn-tmp; \
 	fi
 endif
 	@if test -f svn-tmp ; then \
-	  (cd ../..; LC_ALL=C TZ=GMT svn info || echo "Last Changed Date: unknown") 2> /dev/null \
+	  (cd ../..; LC_ALL=C TZ=GMT $(GIT) svn info || echo "Last Changed Date: unknown") 2> /dev/null \
 	    | sed -n '/^Last Changed Date:/p' | sed 's/[0-9][0-9]:.*//' \
 	    >> svn-tmp ; \
 	else \
-- 
2.3.0-rc1