build-sys: use pkgconfig and lz4 and bump version

The new frame api was released in v. 125.

diff --git a/configure.ac b/configure.ac
index 2024939..1739fe7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -557,9 +557,9 @@ AM_CONDITIONAL(HAVE_BZIP2, [test "$have_bzip2" = "yes"])
 have_lz4=no
 AC_ARG_ENABLE(lz4, AS_HELP_STRING([--enable-lz4], [Enable optional LZ4 support]))
 AS_IF([test "x$enable_lz4" = "xyes"], [
-        AC_CHECK_HEADERS(lz4.h,
+        PKG_CHECK_MODULES(LZ4, [ liblz4 >= 125 ],
                [AC_DEFINE(HAVE_LZ4, 1, [Define in LZ4 is available]) have_lz4=yes],
-               [AC_MSG_ERROR([*** LZ4 support requested but headers not found])])
+               [AC_MSG_ERROR([*** LZ4 support requested but libraries not found])])
 ])
 AM_CONDITIONAL(HAVE_LZ4, [test "$have_lz4" = "yes"])