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sane-backends.m4
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sane-backends.m4
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# from acinclude.m4 for sane-frontends
# ********************************************************************
# Configure paths for SANE
# Oliver Rauch 2000-10-30
dnl AM_PATH_SANE([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for SANE, and define SANE_CFLAGS and SANE_LIBS
dnl
AC_DEFUN([AM_PATH_SANE],
[dnl
dnl Get the cflags and libraries from the sane-config script
dnl
AC_ARG_WITH(sane-prefix,[ --with-sane-prefix=PFX Prefix where SANE is installed (optional)],
sane_config_prefix="$withval", sane_config_prefix="")
AC_ARG_WITH(sane-exec-prefix,[ --with-sane-exec-prefix=PFX Exec prefix where SANE is installed (optional)],
sane_config_exec_prefix="$withval", sane_config_exec_prefix="")
AC_ARG_ENABLE(sanetest, [ --disable-sanetest Do not try to compile and run a test SANE program], , enable_sanetest=yes)
if test x$sane_config_exec_prefix != x ; then
sane_config_args="$sane_config_args --exec-prefix=$sane_config_exec_prefix"
if test x${SANE_CONFIG+set} != xset ; then
SANE_CONFIG=$sane_config_exec_prefix/bin/sane-config
fi
fi
if test x$sane_config_prefix != x ; then
sane_config_args="$sane_config_args --prefix=$sane_config_prefix"
if test x${SANE_CONFIG+set} != xset ; then
SANE_CONFIG=$sane_config_prefix/bin/sane-config
fi
fi
AC_PATH_PROG(SANE_CONFIG, sane-config, no)
min_sane_version=ifelse([$1], ,1.0.0,$1)
AC_MSG_CHECKING(for SANE - version >= $min_sane_version)
no_sane=""
if test "$SANE_CONFIG" = "no" ; then
no_sane=yes
else
SANE_CFLAGS=`$SANE_CONFIG $sane_config_args --cflags`
SANE_LDFLAGS=`$SANE_CONFIG $sane_config_args --ldflags`
# SANE_LIBS=`$SANE_CONFIG $sane_config_args --libs`
SANE_LIBS=`$SANE_CONFIG $sane_config_args --libs | sed -e 's/-lintl//g'`
SANE_PREFIX=`$SANE_CONFIG $sane_config_args --prefix`
sane_config_major_version=`$SANE_CONFIG $sane_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
sane_config_minor_version=`$SANE_CONFIG $sane_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
sane_config_micro_version=`$SANE_CONFIG $sane_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
if test "x$enable_sanetest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LDFLAGS="$LDFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $SANE_CFLAGS"
LDFLAGS="$LDFLAGS $SANE_LDFLAGS"
LIBS="$LIBS $SANE_LIBS"
dnl
dnl Now check if the installed SANE is sufficiently new. (Also sanity
dnl checks the results of sane-config to some extent
dnl
rm -f conf.sanetest
AC_TRY_RUN([
#include <sane/sane.h>
#include <stdio.h>
int
main ()
{
int major, minor, micro;
system ("touch conf.sanetest");
if (sscanf("$min_sane_version", "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", "$min_sane_version");
exit(1);
}
if ( ($sane_config_major_version == major) &&
( ($sane_config_minor_version > minor) ||
( ($sane_config_minor_version == minor) && ($sane_config_micro_version >= micro))))
{
return 0;
}
else if ($sane_config_major_version > major)
{
printf("\n*** A too new version of SANE (%d.%d.%d) was found.\n",
$sane_config_major_version, $sane_config_minor_version, $sane_config_micro_version);
printf("*** You need a version of SANE with the major version number %d.\n", major);
}
else
{
printf("\n*** An old version of SANE (%d.%d.%d) was found.\n",
$sane_config_major_version, $sane_config_minor_version, $sane_config_micro_version);
printf("*** You need a version of SANE newer than %d.%d.%d. The latest version of\n",
major, minor, micro);
}
printf("*** SANE is always available from ftp://ftp.mostang.com\n");
printf("***\n");
printf("*** If you have already installed a sufficient version, this error\n");
printf("*** probably means that the wrong copy of the sane-config shell script is\n");
printf("*** being found. The easiest way to fix this is to remove the old version\n");
printf("*** of SANE, but you can also set the SANE_CONFIG environment to point to the\n");
printf("*** correct copy of sane-config. (In this case, you will have to\n");
printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
printf("*** so that the correct libraries are found at run-time))\n");
return 1;
}
],, no_sane=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LDFLAGS="$ac_save_LDFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
if test "x$no_sane" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test "$SANE_CONFIG" = "no" ; then
echo "*** The sane-config script installed by SANE could not be found"
echo "*** If SANE was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the SANE_CONFIG environment variable to the"
echo "*** full path to sane-config."
else
if test -f conf.sanetest ; then
:
else
echo "*** Could not run SANE test program, checking why..."
CFLAGS="$CFLAGS $SANE_CFLAGS"
LIBS="$LIBS $SANE_LIBS"
LDFLAGS="$LDFLAGS $SANE_LDFLAGS"
AC_TRY_LINK([
#include <sane/sane.h>
#include <stdio.h>
], [ return (SANE_CURRENT_MAJOR); ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding SANE or finding the wrong"
echo "*** version of SANE. If it is not finding SANE, you'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location. Also, make sure you have run ldconfig if that"
echo "*** is required on your system."
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
echo "***" ],
[ echo "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means SANE was incorrectly installed"
echo "*** or that you have moved SANE since it was installed. In the latter case, you"
echo "*** may want to edit the sane-config script: $SANE_CONFIG" ])
CFLAGS="$ac_save_CFLAGS"
LDFLAGS="$ac_save_LDFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
SANE_CFLAGS=""
SANE_LDFLAGS=""
SANE_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(SANE_LDFLAGS)
AC_SUBST(SANE_CFLAGS)
AC_SUBST(SANE_LIBS)
AC_SUBST(SANE_PREFIX)
rm -f conf.sanetest
])