[Buildroot] [git commit] pkg-autotools: fix patching libtool for version 2.4

[Thomas Petazzoni]

commit: http://git.buildroot.net/buildroot/commit/?id=383287ce33c7e8780db3b2a3374aa0b2e57af889
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/master

If the libtool used by the package is 2.4 (i.e. with no patchlevel), we
end up with a confusing message:

    /bin/sh: line 0: test: -gt: unary operator expected

That's because patchlevel is empty, and thus there is nothing to comapre
to 2, and test complains.

Fake a patchlevel of 0 (which is really what a missing patchlevel means
anyway) in that case.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Peter Korsgaard <jacmet at uclibc.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
 package/pkg-autotools.mk |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/package/pkg-autotools.mk b/package/pkg-autotools.mk
index b20e20e..b6b83f8 100644
--- a/package/pkg-autotools.mk
+++ b/package/pkg-autotools.mk
@@ -69,7 +69,7 @@ define LIBTOOL_PATCH_HOOK
 		elif test $${ltmain_version} = "2.2"; then\
 			$(APPLY_PATCHES) $${i%/*} support/libtool buildroot-libtool-v2.2.patch; \
 		elif test $${ltmain_version} = "2.4"; then\
-			if test $${ltmain_patchlevel} -gt 2; then\
+			if test $${ltmain_patchlevel:-0} -gt 2; then\
 				$(APPLY_PATCHES) $${i%/*} support/libtool buildroot-libtool-v2.4.4.patch; \
 			else \
 				$(APPLY_PATCHES) $${i%/*} support/libtool buildroot-libtool-v2.4.patch; \