dnl as-arts.m4 0.1.0dnl $Id: as-arts.m4,v 1.1 2005/01/18 07:28:04 ds Exp $dnl if you copy this file to your cvs,dnl add this file using cvs -ko add to retain this headerdnl This is an example arts .m4 adapted and scrubbed by thomasvs# Configure paths for ARTS# Philip Stadermann   2001-06-21# stolen from esd.m4dnl AM_PATH_ARTS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])dnl Test for ARTS, and define ARTS_CXXFLAGS and ARTS_LIBSdnlAC_DEFUN([AM_PATH_ARTS],[dnl dnl Get the cflags and libraries from the artsc-config scriptdnlAC_ARG_WITH(arts-prefix,  AC_HELP_STRING([--with-arts-prefix=PFX],                 [prefix where ARTS is installed (optional)]),  arts_prefix="$withval", arts_prefix="")AC_ARG_WITH(arts-exec-prefix,  AC_HELP_STRING([--with-arts-exec-prefix=PFX],                 [exec prefix where ARTS is installed (optional)]),  arts_exec_prefix="$withval", arts_exec_prefix="")AC_ARG_ENABLE(artstest,   AC_HELP_STRING([--disable-artstest],                 [do not try to compile and run a test ARTS program]),  , enable_artstest=yes)  if test x$arts_exec_prefix != x ; then    arts_args="$arts_args --exec-prefix=$arts_exec_prefix"    if test x${ARTS_CONFIG+set} != xset ; then      ARTS_CONFIG=$arts_exec_prefix/bin/artsc-config    fi  fi  if test x$arts_prefix != x ; then    arts_args="$arts_args --prefix=$arts_prefix"    if test x${ARTS_CONFIG+set} != xset ; then      ARTS_CONFIG=$arts_prefix/bin/artsc-config    fi  fi  AC_PATH_PROG(ARTS_CONFIG, artsc-config, no)  min_arts_version=ifelse([$1], ,0.9.5,$1)  AC_MSG_CHECKING(for ARTS artsc - version >= $min_arts_version)  no_arts=""  if test "$ARTS_CONFIG" = "no" ; then    no_arts=yes  else    # FIXME: thomas added this sed to get arts path instead of artsc    # replace -I.../artsc with -I.../arts    ARTS_CXXFLAGS=`$ARTS_CONFIG $artsconf_args --cflags | artsc-config --cflags | sed 's/\(-I.*\)artsc/\1arts/'`    ARTS_LIBS=`$ARTS_CONFIG $artsconf_args --libs | sed 's/artsc$/arts/'`    arts_major_version=`$ARTS_CONFIG $arts_args --version | \           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`    arts_minor_version=`$ARTS_CONFIG $arts_args --version | \           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`    arts_micro_version=`$ARTS_CONFIG $arts_config_args --version | \           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`    if test "x$enable_artstest" = "xyes" ; then      dnl ac_save_CXXFLAGS="$CXXFLAGS"      dnl ac_save_LIBS="$LIBS"      dnl CFLAGS="$CFLAGS $ARTS_CXXFLAGS"      dnl LIBS="$LIBS $ARTS_LIBS"dnldnl Now check if the installed ARTS is sufficiently new. (Also sanitydnl checks the results of artsc-config to some extent)dnldnl a*s: to successfully compile the C++ test app, we need to dnl first make sure we're going to compile it as C++ (with AC_LANG_PUSH),dnl then add the CFLAGS and CLIBS of arts which we just discovered to thednl C++ compilation and linking flags.dnl We also need to clean up after the test; this means using AC_LANG_POPdnl and restoring the CPPFLAGS and LDFLAGS from the saved values we take dnl here.dnl ask nicely for C++ compilation      AC_LANG_PUSH(C++)dnl save compilation and link flags and make our own      ac_save_CPPFLAGS="$CPPFLAGS"      ac_save_LDFLAGS="$LDFLAGS"      AC_SUBST(CPPFLAGS,"$CPPFLAGS $ARTS_CXXFLAGS")      AC_SUBST(LDFLAGS,"$LDFLAGS $ARTS_CLIBS")       rm -f conf.artstest      AC_TRY_RUN([#include <stdio.h>#include <stdlib.h>#include <string.h>#include <artsflow.h>char*my_strdup (char *str){  char *new_str;    if (str)    {      // thomas: the original test did not have the typecast      new_str = (char *) malloc ((strlen (str) + 1) * sizeof(char));      strcpy (new_str, str);    }  else    new_str = NULL;    return new_str;}int main (){  int major, minor, micro;  char *tmp_version;  system ("touch conf.artstest");  /* HP/UX 9 (%@#!) writes to sscanf strings */  tmp_version = my_strdup("$min_arts_version");  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {     printf("%s, bad version string\n", "$min_arts_version");     exit(1);   }   if (($arts_major_version > major) ||      (($arts_major_version == major) && ($arts_minor_version > minor)) ||      (($arts_major_version == major) && ($arts_minor_version == minor) && ($arts_micro_version >= micro)))    {      return 0;    }  else    {      printf("\n*** 'artsc-config --version' returned %d.%d.%d, but the minimum version\n", $arts_major_version, $arts_minor_version, $arts_micro_version);      printf("*** of ARTS required is %d.%d.%d. If artsc-config is correct, then it is\n", major, minor, micro);      printf("*** best to upgrade to the required version.\n");      printf("*** If artsc-config was wrong, set the environment variable ARTS_CONFIG\n");      printf("*** to point to the correct copy of artsc-config, and remove the file\n");      printf("*** config.cache before re-running configure\n");      return 1;    }}],, no_arts=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])      dnl CFLAGS="$ac_save_CFLAGS"      dnl LIBS="$ac_save_LIBS"      dnl a*s this is were we clean up after the test      AC_LANG_POP(C++)      CXXFLAGS="$ac_save_CXXFLAGS"      LDFLAGS="$ac_save_LDFLAGS"      dnl a*s we are sure that these are right, so we make them active      AC_SUBST(CXXFLAGS,"$CXXFLAGS")      AC_SUBST(LDFLAGS,"$LDFLAGS")    fi  fi  if test "x$no_arts" = x ; then    AC_MSG_RESULT(yes)    ifelse([$2], , :, [$2])       else    AC_MSG_RESULT(no)    if test "$ARTS_CONFIG" = "no" ; then      echo "*** The artsc-config script installed by ARTS could not be found"      echo "*** If ARTS was installed in PREFIX, make sure PREFIX/bin is in"      echo "*** your path, or set the ARTS_CONFIG environment variable to the"      echo "*** full path to artsc-config."    else      if test -f conf.artstest ; then        :      else         echo "*** Could not run ARTS test program, checking why..."         CFLAGS="$CFLAGS $ARTS_CXXFLAGS"         LIBS="$LIBS $ARTS_LIBS"         AC_TRY_LINK([#include <stdio.h>#include <artsflow.h>],      [ return 0; ],        [ echo "*** The test program compiled, but did not run. This usually means"          echo "*** that the run-time linker is not finding ARTS or finding the wrong"          echo "*** version of ARTS. If it is not finding ARTS, 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 "*** The test program failed to compile or link. See the file config.log for the"          echo "*** exact error that occured. This usually means ARTS was incorrectly installed"          echo "*** or that you have moved ARTS since it was installed. In the latter case, you"          echo "*** may want to edit the artsc-config script: $ARTS_CONFIG" ])          CFLAGS="$ac_save_CFLAGS"          LIBS="$ac_save_LIBS"      fi    fi    ARTS_CXXFLAGS=""    ARTS_LIBS=""    ifelse([$3], , :, [$3])  fi  AC_SUBST(ARTS_CXXFLAGS)  AC_SUBST(ARTS_LIBS)  rm -f conf.artstest])dnl release C++ question