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spice-deps: Make LZ4 check depending on function

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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.

Acked-by: Frediano Ziglio <fziglio@redhat.com>
This commit is contained in:
Pavel Grunt 2016-11-25 13:17:49 +01:00 committed by Frediano Ziglio
parent de1dee75c2
commit 48da2c6654
1 changed files with 18 additions and 4 deletions
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22
m4/spice-deps.m4
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@ -184,12 +184,26 @@ AC_DEFUN([SPICE_CHECK_LZ4], [
have_lz4="no"
if test "x$enable_lz4" != "xno"; then
PKG_CHECK_MODULES([LZ4], [liblz4 >= 129], [have_lz4="yes"], [have_lz4="no"])
# LZ4_compress_default is available in liblz4 >= 129, however liblz has changed
# versioning scheme making the check failing. Rather check for function definition
PKG_CHECK_MODULES([LZ4], [liblz4], [have_lz4="yes"], [have_lz4="no"])
if test "x$have_lz4" = "xyes"; then
AC_DEFINE(USE_LZ4, [1], [Define to build with lz4 support])
elif test "x$enable_lz4" = "xyes"; then
AC_MSG_ERROR([lz4 support requested but liblz4 could not be found])
# It is necessary to set LIBS and CFLAGS before AC_CHECK_FUNC
old_LIBS="$LIBS"
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $LZ4_CFLAGS"
LIBS="$LIBS $LZ4_LIBS"
AC_CHECK_FUNC([LZ4_compress_default], [
AC_DEFINE(USE_LZ4, [1], [Define to build with lz4 support])],
[have_lz4="no"])
LIBS="$old_LIBS"
CFLAGS="$old_CFLAGS"
fi
if test "x$enable_lz4" = "xyes" && test "x$have_lz4" = "xno"; then
AC_MSG_ERROR([lz4 support requested but liblz4 >= 129 could not be found])
fi
fi
AM_CONDITIONAL(HAVE_LZ4, test "x$have_lz4" = "xyes")