[PATCH] erofs-utils: fix configure.ac

[Gao Xiang]

Hi Haruue,

On Fri, Nov 22, 2019 at 04:58:59PM +0800, Haruue Icymoon wrote:
> ./configure will fail when --with-lz4-libdir is not set, since
> $with_lz4_libdir will be an empty string and generate an empty -L
> into LDFLAGS. This patch fixes it.
> 
> Signed-off-by: Haruue Icymoon <i at haruue.moe>
> ---
>  configure.ac | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/configure.ac b/configure.ac
> index f925358..870dfb9 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -174,7 +174,7 @@ if test "x$enable_lz4" = "xyes"; then
>  
>    if test "x${have_lz4h}" = "xyes" ; then
>      saved_LDFLAGS=${LDFLAGS}
> -    LDFLAGS="-L$with_lz4_libdir ${LDFLAGS}"
> +    test -z "${with_lz4_libdir}" || LDFLAGS="-L$with_lz4_libdir ${LDFLAGS}"
>      AC_CHECK_LIB(lz4, LZ4_compress_destSize, [
>        have_lz4="yes"
>        have_lz4hc="yes"
> -- 
> 2.24.0

Thanks for your patch. *thumb*

Applied to experimental branch now, and I will move it to dev branch
tomorrow since it's a useful trivial build fix for some debian builds
as well [1].

[1] https://buildd.debian.org/status/package.php?p=erofs-utils
    https://buildd.debian.org/status/fetch.php?pkg=erofs-utils&arch=hppa&ver=1.0-3&stamp=1573917897&raw=0

Thanks,
Gao Xiang

> 
> 
> -- 
> Haruue Icymoon
> GPG: E16D 3FA4 E636 A602 2684  0D38 A54A 7E9C 812E EB09
> https://haruue.moe/
>