Ethereal-dev: [Ethereal-dev] [RESEND] [PATCH] Detect WinPcap from Unix-style build on Cygwin

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From: Noah Misch <[email protected]>
Date: Thu, 1 Jul 2004 01:51:35 -0700
This patch seems to have fallen off the radar.  Is it sound for inclusion?

On Mon, Jun 07, 2004 at 05:16:29AM -0700, Noah Misch wrote:
> This patch allows the Unix build process to find libpcap as -lwpcap, the name it
> takes when in the form of WinPcap.  This lets one build on Cygwin with a simple
> --with-pcap=/cygdrive/c/ethereal-win32-libs/wpdpack, assuming one has set up the
> libraries directory for a VC++ build.
> 
> I tested on Windows 2000 with a very recent Cygwin and the WinPcap developer
> pack that win32-setup.sh downloads.  I also tested on Fedora Core 1.  I lack
> access to an AIX(?) machine on which to test the -lcfg -lodm logic, however.
> 
> Index: acinclude.m4
> ===================================================================
> RCS file: /cvsroot/ethereal/acinclude.m4,v
> retrieving revision 1.76
> diff -u -r1.76 acinclude.m4
> --- acinclude.m4	18 May 2004 11:11:37 -0000	1.76
> +++ acinclude.m4	5 Jun 2004 04:04:06 -0000
> @@ -322,15 +322,16 @@
>  and did you also install that package?]]))
>  
>  	#
> -	# Check to see if we find "pcap_open_live" in "-lpcap".
> +	# Look for a libpcap implementation.
>  	#
> -	AC_CHECK_LIB(pcap, pcap_open_live,
> +	ac_save_LIBS="$LIBS"
> +	LIBS=""
> +	AC_SEARCH_LIBS(pcap_open_live, [pcap wpcap],
>  	  [
> -	    PCAP_LIBS=-lpcap
> +	    PCAP_LIBS="$LIBS"
>  	    AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
>  	  ], [
>  	    AC_MSG_CHECKING([for pcap_open_live in -lpcap -lcfg -lodm])
> -	    ac_save_LIBS="$LIBS"
>  	    LIBS="-lpcap -lcfg -lodm"
>  	    AC_TRY_LINK(
>  		[
> @@ -348,8 +349,8 @@
>  		AC_MSG_RESULT([no])
>  		AC_MSG_ERROR([Library libpcap not found.])
>  		])
> -	    LIBS=$ac_save_LIBS
>  	  ], $SOCKET_LIBS $NSL_LIBS)
> +	LIBS="$ac_save_LIBS"
>  	AC_SUBST(PCAP_LIBS)
>  
>  	#