[Spice-devel] [PATCH spice-common] spice-deps: Make LZ4 check depending on function

[Pavel Grunt]

LZ4 changed versioning scheme from r131 to v1.7.3 making our configure
fail with (1.7.3 < 129).

Switch from version checking to checking that the necessary function
is available.
---
 m4/spice-deps.m4 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/m4/spice-deps.m4 b/m4/spice-deps.m4
index adedec4..43a7d4a 100644
--- a/m4/spice-deps.m4
+++ b/m4/spice-deps.m4
@@ -185,12 +185,14 @@ AC_DEFUN([SPICE_CHECK_LZ4], [
 
     have_lz4="no"
     if test "x$enable_lz4" != "xno"; then
-      PKG_CHECK_MODULES([LZ4], [liblz4 >= 129], [have_lz4="yes"], [have_lz4="no"])
+      PKG_CHECK_MODULES([LZ4], [liblz4], [
+          AC_SEARCH_LIBS([LZ4_compress_default], [lz4], [have_lz4="yes"], [have_lz4="no"])],
+          [have_lz4="no"])
 
       if test "x$have_lz4" = "xyes"; then
         AC_DEFINE(USE_LZ4, [1], [Define to build with lz4 support])
       elif test "x$enable_lz4" = "xyes"; then
-        AC_MSG_ERROR([lz4 support requested but liblz4 could not be found])
+        AC_MSG_ERROR([lz4 support requested but liblz4 >= 129 could not be found])
       fi
     fi
     AM_CONDITIONAL(HAVE_LZ4, test "x$have_lz4" = "xyes")
-- 
2.10.2