aclocal.m4

# aclocal.m4 generated automatically by aclocal 1.6.3 -*- Autoconf -*-

# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
# Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.

# Configure path for the GNU Scientific Library
# Christopher R. Gabriel <cgabriel@linux.it>, April 2000



# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
# 
# Copyright 2004 Scott James Remnant <scott@netsplit.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# PKG_PROG_PKG_CONFIG([MIN-VERSION])
# ----------------------------------
AC_DEFUN([PKG_PROG_PKG_CONFIG],
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
fi
if test -n "$PKG_CONFIG"; then
	_pkg_min_version=m4_default([$1], [0.9.0])
	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
		PKG_CONFIG=""
	fi
		
fi[]dnl
])# PKG_PROG_PKG_CONFIG

# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
#
# Check to see whether a particular set of modules exists.  Similar
# to PKG_CHECK_MODULES(), but does not set variables or print errors.
#
#
# Similar to PKG_CHECK_MODULES, make sure that the first instance of
# this or PKG_CHECK_MODULES is called, or make sure to call
# PKG_CHECK_EXISTS manually
# --------------------------------------------------------------
AC_DEFUN([PKG_CHECK_EXISTS],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
if test -n "$PKG_CONFIG" && \
    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
  m4_ifval([$2], [$2], [:])
m4_ifvaln([$3], [else
  $3])dnl
fi])


# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
# ---------------------------------------------
m4_define([_PKG_CONFIG],
[if test -n "$$1"; then
    pkg_cv_[]$1="$$1"
 elif test -n "$PKG_CONFIG"; then
    PKG_CHECK_EXISTS([$3],
                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
		     [pkg_failed=yes])
 else
    pkg_failed=untried
fi[]dnl
])# _PKG_CONFIG

# _PKG_SHORT_ERRORS_SUPPORTED
# -----------------------------
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
        _pkg_short_errors_supported=yes
else
        _pkg_short_errors_supported=no
fi[]dnl
])# _PKG_SHORT_ERRORS_SUPPORTED


# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
# [ACTION-IF-NOT-FOUND])
#
#
# Note that if there is a possibility the first call to
# PKG_CHECK_MODULES might not happen, you should be sure to include an
# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
#
#
# --------------------------------------------------------------
AC_DEFUN([PKG_CHECK_MODULES],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl

pkg_failed=no
AC_MSG_CHECKING([for $1])

_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])

m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])

if test $pkg_failed = yes; then
        _PKG_SHORT_ERRORS_SUPPORTED
        if test $_pkg_short_errors_supported = yes; then
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
        else 
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
        fi
	# Put the nasty error message in config.log where it belongs
	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD

	ifelse([$4], , [AC_MSG_ERROR(dnl
[Package requirements ($2) were not met:

$$1_PKG_ERRORS

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

_PKG_TEXT
])],
		[AC_MSG_RESULT([no])
                $4])
elif test $pkg_failed = untried; then
	ifelse([$4], , [AC_MSG_FAILURE(dnl
[The pkg-config script could not be found or is too old.  Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.

_PKG_TEXT

To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
		[$4])
else
	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
        AC_MSG_RESULT([yes])
	ifelse([$3], , :, [$3])
fi[]dnl
])# PKG_CHECK_MODULES



AC_DEFUN([AM_PATH_GSL],
[
AC_ARG_WITH(gsl-prefix,[  --with-gsl-prefix=PFX   Prefix where GSL is installed (optional)],
            gsl_prefix="$withval", gsl_prefix="")
AC_ARG_WITH(gsl-exec-prefix,[  --with-gsl-exec-prefix=PFX Exec prefix where GSL is installed (optional)],
            gsl_exec_prefix="$withval", gsl_exec_prefix="")
AC_ARG_ENABLE(gsltest, [  --disable-gsltest       Do not try to compile and run a test GSL program],
		    , enable_gsltest=yes)

  if test "x${GSL_CONFIG+set}" != xset ; then
     if test "x$gsl_prefix" != x ; then
         GSL_CONFIG="$gsl_prefix/bin/gsl-config"
     fi
     if test "x$gsl_exec_prefix" != x ; then
        GSL_CONFIG="$gsl_exec_prefix/bin/gsl-config"
     fi
  fi

  AC_PATH_PROG(GSL_CONFIG, gsl-config, no)
  min_gsl_version=ifelse([$1], ,0.2.5,$1)
  AC_MSG_CHECKING(for GSL - version >= $min_gsl_version)
  no_gsl=""
  if test "$GSL_CONFIG" = "no" ; then
    no_gsl=yes
  else
    GSL_CFLAGS=`$GSL_CONFIG --cflags`
    GSL_LIBS=`$GSL_CONFIG --libs`

    gsl_major_version=`$GSL_CONFIG --version | \
           sed 's/^\([[0-9]]*\).*/\1/'`
    if test "x${gsl_major_version}" = "x" ; then
       gsl_major_version=0
    fi

    gsl_minor_version=`$GSL_CONFIG --version | \
           sed 's/^\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\).*/\2/'`
    if test "x${gsl_minor_version}" = "x" ; then
       gsl_minor_version=0
    fi

    gsl_micro_version=`$GSL_CONFIG --version | \
           sed 's/^\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\).*/\3/'`
    if test "x${gsl_micro_version}" = "x" ; then
       gsl_micro_version=0
    fi

    if test "x$enable_gsltest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $GSL_CFLAGS"
      LIBS="$LIBS $GSL_LIBS"

      rm -f conf.gsltest
      AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char* my_strdup (const char *str);

char*
my_strdup (const char *str)
{
  char *new_str;
  
  if (str)
    {
      new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
      strcpy (new_str, str);
    }
  else
    new_str = NULL;
  
  return new_str;
}

int main (void)
{
  int major = 0, minor = 0, micro = 0;
  int n;
  char *tmp_version;

  system ("touch conf.gsltest");

  /* HP/UX 9 (%@#!) writes to sscanf strings */
  tmp_version = my_strdup("$min_gsl_version");

  n = sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) ;

  if (n != 2 && n != 3) {
     printf("%s, bad version string\n", "$min_gsl_version");
     exit(1);
   }

   if (($gsl_major_version > major) ||
      (($gsl_major_version == major) && ($gsl_minor_version > minor)) ||
      (($gsl_major_version == major) && ($gsl_minor_version == minor) && ($gsl_micro_version >= micro)))
    {
      exit(0);
    }
  else
    {
      printf("\n*** 'gsl-config --version' returned %d.%d.%d, but the minimum version\n", $gsl_major_version, $gsl_minor_version, $gsl_micro_version);
      printf("*** of GSL required is %d.%d.%d. If gsl-config is correct, then it is\n", major, minor, micro);
      printf("*** best to upgrade to the required version.\n");
      printf("*** If gsl-config was wrong, set the environment variable GSL_CONFIG\n");
      printf("*** to point to the correct copy of gsl-config, and remove the file\n");
      printf("*** config.cache before re-running configure\n");
      exit(1);
    }
}

],, no_gsl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi
  if test "x$no_gsl" = x ; then
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$GSL_CONFIG" = "no" ; then
       echo "*** The gsl-config script installed by GSL could not be found"
       echo "*** If GSL was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the GSL_CONFIG environment variable to the"
       echo "*** full path to gsl-config."
     else
       if test -f conf.gsltest ; then
        :
       else
          echo "*** Could not run GSL test program, checking why..."
          CFLAGS="$CFLAGS $GSL_CFLAGS"
          LIBS="$LIBS $GSL_LIBS"
          AC_TRY_LINK([
#include <stdio.h>
],      [ return 0; ],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding GSL or finding the wrong"
          echo "*** version of GSL. If it is not finding GSL, 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 GSL was incorrectly installed"
          echo "*** or that you have moved GSL since it was installed. In the latter case, you"
          echo "*** may want to edit the gsl-config script: $GSL_CONFIG" ])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi
#     GSL_CFLAGS=""
#     GSL_LIBS=""
     ifelse([$3], , :, [$3])
  fi
  AC_SUBST(GSL_CFLAGS)
  AC_SUBST(GSL_LIBS)
  rm -f conf.gsltest
])



AC_DEFUN([ACX_BLAS], [
AC_PREREQ(2.50)
AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])
acx_blas_ok=no

AC_ARG_WITH(blas,
        [AC_HELP_STRING([--with-blas=<lib>], [use BLAS library <lib>])])
case $with_blas in
        yes | "") ;;
        no) acx_blas_ok=disable ;;
        -* | */* | *.a | *.so | *.so.* | *.o) BLAS_LIBS="$with_blas" ;;
        *) BLAS_LIBS="-l$with_blas" ;;
esac

# Get fortran linker names of BLAS functions to check for.
AC_F77_FUNC(sgemm)
AC_F77_FUNC(dgemm)

acx_blas_save_LIBS="$LIBS"
LIBS="$LIBS $FLIBS"

# First, check BLAS_LIBS environment variable
if test $acx_blas_ok = no; then
if test "x$BLAS_LIBS" != x; then
        save_LIBS="$LIBS"; LIBS="$BLAS_LIBS $LIBS"
        AC_MSG_CHECKING([for $sgemm in $BLAS_LIBS])
        AC_TRY_LINK_FUNC($sgemm, [acx_blas_ok=yes], [BLAS_LIBS=""])
        AC_MSG_RESULT($acx_blas_ok)
        LIBS="$save_LIBS"
fi
fi

# BLAS linked to by default?  (happens on some supercomputers)
if test $acx_blas_ok = no; then
        save_LIBS="$LIBS"; LIBS="$LIBS"
        AC_CHECK_FUNC($sgemm, [acx_blas_ok=yes])
        LIBS="$save_LIBS"
fi

# BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(atlas, ATL_xerbla,
                [AC_CHECK_LIB(f77blas, $sgemm,
                [AC_CHECK_LIB(cblas, cblas_dgemm,
                        [acx_blas_ok=yes
                         BLAS_LIBS="-lcblas -lf77blas -latlas"],
                        [], [-lf77blas -latlas])],
                        [], [-latlas])])
fi

# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(blas, $sgemm,
                [AC_CHECK_LIB(dgemm, $dgemm,
                [AC_CHECK_LIB(sgemm, $sgemm,
                        [acx_blas_ok=yes; BLAS_LIBS="-lsgemm -ldgemm -lblas"],
                        [], [-lblas])],
                        [], [-lblas])])
fi

# BLAS in Alpha CXML library?
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(cxml, $sgemm, [acx_blas_ok=yes;BLAS_LIBS="-lcxml"])
fi

# BLAS in Alpha DXML library? (now called CXML, see above)
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(dxml, $sgemm, [acx_blas_ok=yes;BLAS_LIBS="-ldxml"])
fi

# BLAS in Sun Performance library?
if test $acx_blas_ok = no; then
        if test "x$GCC" != xyes; then # only works with Sun CC
                AC_CHECK_LIB(sunmath, acosp,
                        [AC_CHECK_LIB(sunperf, $sgemm,
                                [BLAS_LIBS="-xlic_lib=sunperf -lsunmath"
                                 acx_blas_ok=yes],[],[-lsunmath])])
        fi
fi

# BLAS in SCSL library?  (SGI/Cray Scientific Library)
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(scs, $sgemm, [acx_blas_ok=yes; BLAS_LIBS="-lscs"])
fi

# BLAS in SGIMATH library?
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(complib.sgimath, $sgemm,
                     [acx_blas_ok=yes; BLAS_LIBS="-lcomplib.sgimath"])
fi

# BLAS in IBM ESSL library? (requires generic BLAS lib, too)
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(blas, $sgemm,
                [AC_CHECK_LIB(essl, $sgemm,
                        [acx_blas_ok=yes; BLAS_LIBS="-lessl -lblas"],
                        [], [-lblas $FLIBS])])
fi

# Generic BLAS library?
if test $acx_blas_ok = no; then
        AC_CHECK_LIB(blas, $sgemm, [acx_blas_ok=yes; BLAS_LIBS="-lblas"])
fi

AC_SUBST(BLAS_LIBS)

LIBS="$acx_blas_save_LIBS"

# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x"$acx_blas_ok" = xyes; then
        ifelse([$1],,AC_DEFINE(HAVE_BLAS,1,[Define if you have a BLAS library.]),[$1])
        :
else
        acx_blas_ok=no
        $2
fi
])dnl ACX_BLAS