File: configure.in

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imgvtopgm 2.0-2
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dnl
dnl configure.in
dnl	autoconf input file for imgvtopgm.
dnl
dnl Copyright (C) 1998 Eric A. Howe
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
dnl
dnl   Authors:	Eric A. Howe (mu@trends.net)
dnl

dnl
dnl Process this file with autoconf to produce a configure script.
dnl
AC_INIT(imgvtopnm.c)
AM_INIT_AUTOMAKE(imgvtopgm, 2.0)

dnl
dnl This is a trick to get my CVS ident string into configure.
dnl AC_REVISION could be used but that strips out the dollar signs and
dnl thus prevents `ident' from figuring out the revision information.
dnl
AC_OUTPUT_COMMANDS([# @(#)$Mu: imgvtopgm/configure.in 1.6 1999/05/12 15:54:10 $])

MU_PROG_CC
AC_C_BIGENDIAN
if test $ac_cv_c_bigendian = "yes"; then
	CFLAGS="-DMU_BIGENDIAN $CFLAGS"
else
	CFLAGS="-DMU_LITTLEENDIAN $CFLAGS"
fi

AC_PATH_XTRA

dnl ==========================================================================
dnl Makefile things.
dnl ==========================================================================

AC_ARG_ENABLE(maintainer,
[  --enable-maintainer     enable maintainer rules [default=no]])
AM_CONDITIONAL(MU_MAINTAINER, test x$enable_maintainer = xyes)

dnl
dnl Checks for libraries.
dnl
MU_FIND_PNM
LIBS="$LIBS $X_EXTRA_LIBS"
CFLAGS="$CFLAGS $X_CFLAGS"
CPPFLAGS="$CPPFLAGS $X_CFLAGS"
LDFLAGS="$LDFLAGS $X_LIBS"

PBM_LIBS=""
AC_CHECK_LIB(pbm, pbm_init, PBM_LIBS="$PNM_LIBS -lpbm")
if test "$PBM_LIBS" = ""; then
AC_MSG_ERROR([The PBM library '-lpbm' could not be found.
		Please use the configure options '--with-pnm-includes=DIR'
		and '--with-pnm-libraries=DIR' to specify the netpbm location.
		See the 'config.log' file for further diagnostics.])
fi
AC_SUBST(PBM_LIBS)

PGM_LIBS=""
AC_CHECK_LIB(pgm, pgm_init, PGM_LIBS="$PNM_LIBS -lpgm", , $PNM_LIBS ${PBM_LIBS})
if test "$PGM_LIBS" = ""; then
AC_MSG_ERROR([The PGM library '-lpgm' could not be found.
		Please use the configure options '--with-pnm-includes=DIR'
		and '--with-pnm-libraries=DIR' to specify the netpbm location.
		See the 'config.log' file for further diagnostics.])
fi
AC_SUBST(PGM_LIBS)

dnl
dnl The pbmplus.h header (stupidly) provides K&R prototypes for some
dnl functions from libc (sigh) so we define SYSV to hopefully work around
dnl the brain damage; this works for me on Linux, YMMV.  Another option is
dnl to use -ansi with gcc but I don't know how to get auto* to do The Right
dnl Thing.
dnl
AC_MSG_CHECKING([whether we need -DSYSV])
AC_TRY_COMPILE([
#define SYSV
#include <pbmplus.h>],
	[exit(0);],
  AC_MSG_RESULT(yes)
  AC_DEFINE(SYSV),
  AC_MSG_RESULT(no)
)

AC_OUTPUT([Makefile imgvinfo.1 imgvtopnm.1 imgvview.1 pbmtoimgv.1 pgmtoimgv.1 ppmimgvquant.1 imgvview ppmimgvquant])