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From 8200002233bd40acda4bbfb991a31d87f4224fea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Wed, 23 Nov 2016 10:18:30 -0500
Subject: [PATCH 21/21] build-sys: check for lz4 in the old and new numbering
scheme (#4717)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
lz4 upstream decided to switch to an incompatible numbering scheme
(1.7.3 follows 131, to match the so version).
PKG_CHECK_MODULES does not allow two version matches for the same package,
so e.g. lz4 < 10 || lz4 >= 125 cannot be used. Check twice, once for
"new" numbers (anything below 10 is assume to be new), once for the "old"
numbers (anything above >= 125). This assumes that the "new" versioning
will not get to 10 to quickly. I think that's a safe assumption, lz4 is a
mature project.
Fixed #4690.
Upstream-Status: Backport
Signed-off-by: Stefan Müller-Klieser <s.mueller-klieser@phytec.de>
---
configure.ac | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index 279ce28..782b5d7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -640,10 +640,13 @@ AM_CONDITIONAL(HAVE_BZIP2, [test "$have_bzip2" = "yes"])
have_lz4=no
AC_ARG_ENABLE(lz4, AS_HELP_STRING([--disable-lz4], [Disable optional LZ4 support]))
AS_IF([test "x$enable_lz4" != "xno"], [
- PKG_CHECK_MODULES(LZ4, [ liblz4 >= 125 ],
- [AC_DEFINE(HAVE_LZ4, 1, [Define in LZ4 is available])
+ PKG_CHECK_MODULES(LZ4, [ liblz4 < 10 ],
+ [AC_DEFINE(HAVE_LZ4, 1, [Define if LZ4 is available])
have_lz4=yes],
- have_lz4=no)
+ [PKG_CHECK_MODULES(LZ4, [ liblz4 >= 125 ],
+ [AC_DEFINE(HAVE_LZ4, 1, [Define if LZ4 is available])
+ have_lz4=yes],
+ have_lz4=no)])
AS_IF([test "x$have_lz4" = xno -a "x$enable_lz4" = xyes],
[AC_MSG_ERROR([*** LZ4 support requested but libraries not found])])
])
--
1.9.1
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