[PATCH:libfontenc] Fail configure if zlib.h & -lz not found

[Dan Nicholson]

On Fri, Nov 19, 2010 at 10:04 PM, Alan Coopersmith
<alan.coopersmith at oracle.com> wrote:
> Fixes https://bugs.freedesktop.org/show_bug.cgi?id=31595
>
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
> ---
>  configure.ac |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/configure.ac b/configure.ac
> index fb0b1af..9419909 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -48,8 +48,10 @@ XORG_FONT_MACROS_VERSION(1.1)
>  XORG_FONTSUBDIR([ENCODINGSDIR], [encodingsdir], [encodings])
>
>  # zlib
> -
> -AC_CHECK_LIB(z, gzclose)
> +AC_CHECK_HEADER([zlib.h], [],
> +                AC_MSG_FAILURE([zlib.h is required to compile libfontenc]))
> +AC_CHECK_LIB(z, gzclose, [],
> +             AC_MSG_FAILURE([zlib is required to compile libfontenc]))
>
>  # Check for dependencies
>  PKG_CHECK_MODULES(FONTENC, xproto)

I think this breaks zlib linking. Normally if you use AC_CHECK_LIB
with no third argument, it appends -l$1 to LIBS, and all objects get
linked against $LIBS. Now since you're suppressing the default action
by passing a third argument, I think you may not get -lz in $LIBS. Can
you check?

--
Dan