root/branches/mcstas-1.x/configure.in

#
#   This file is part of the McStas neutron ray-trace simulation package
#   Copyright (C) 1997-2008, All rights reserved
#   Risoe National Laborartory, Roskilde, Denmark
#   Institut Laue Langevin, Grenoble, France
#
#   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; version 2 of the License.
#
#   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
#
dnl Process this file with autoconf to produce a configure script.

AC_INIT(McStas, 1.12c, www.mcstas.org)
AC_REVISION($Revision: 1.58 $)
AC_COPYRIGHT([Copyright (C) 1997-2011  Copyright (C) 1997-2011, All rights reserved
Risoe National Laborartory, Roskilde, Denmark
Institut Laue Langevin, Grenoble, France
This software is covered by the GNU LESSER GENERAL PUBLIC LICENSE
see file COPYING for further information])

AC_ARG_WITH([cc], AC_HELP_STRING([--with-cc=c compiler], [Specify name of C compiler]),
        [with_cc=$withval], [with_cc=yes])
if test x"$with_cc" != x"no" ; then
        if test x"$with_cc" != x"yes" ; then CC="$with_cc"; fi
        AC_PROG_CC
else
        AC_MSG_ERROR([You need a C compiler to compile this package])
fi

AC_PROG_INSTALL
CF_ANSI_CC_CHECK
MC_ANSI_MATH_PROTO
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_FUNC_STRTOD
AC_CHECK_FUNCS(strcasecmp fdopen qsort)

AC_PATH_PROGS(PERL,   [perl5 perl /usr/bin/perl /usr/local/bin/perl], no)
AC_PATH_PROGS(SCILAB, [scilab runscilab /usr/local/bin/scilab /usr/lib/scilab/bin/scilab /lib/scilab/bin/scilab scilex], no)
AC_PATH_PROGS(MATLAB, [matlab /usr/local/bin/matlab], no)
AC_PATH_PROGS(GNUPLOT, [gnuplot /usr/local/bin/gnuplot], no)
AC_PATH_PROGS(PGPLOT, [pgxwin_server /usr/local/bin/pgxwin_server /usr/local/pgplot/pgxwin_server], no)
AC_PATH_PROGS(TCLTK,  [wish /usr/local/bin/wish tclsh], no)
AC_PATH_PROGS(SSH,    [ssh plink /usr/local/bin/ssh], no)
AC_PATH_PROGS(SCP,    [scp pscp /usr/local/bin/scp], no)
AC_PATH_PROGS(DASH,   [dash /bin/dash /usr/bin/dash], no)
AC_PATH_PROGS(MPIRUN, [mpirun /usr/local/bin/mpirun], no)
AC_PATH_PROGS(MPICC,  [mpicc hcc mpxlc_r mpxlc mpcc cmpicc /usr/local/bin/mpicc], no)
AC_PATH_PROGS(BROWSER,[konqueror firefox mozilla-firefox mozilla netscape gnome-open epiphany galeon start msie /Applications/Safari.app/Contents/MacOS/Safari /Applications/Firefox.app/Contents/MacOS/firefox], no)
AC_PATH_PROGS(EDITOR, [nedit kate gedit xemacs xedit vim notepad wordpad], no)
AC_PATH_PROGS(VRMLVIEW, [octagaplayer freewrl gtklookat qtlookat xmlookat maclookat fltklookat lookat], no)
AC_PATH_PROGS(WGET, [wget], no)
AC_PATH_PROGS(PERLDL,   [perldl /usr/local/bin/perldl /usr/bin/perldl], no)
AC_PATH_PROGS(G77, [g77 f77 gfortran g95 f95], no)
AC_PATH_PROGS(MINGW, [i586-mingw32msvc-gcc], no)
AC_PATH_PROGS(MAKE,   [make gmake], no)
AC_PATH_PROGS(AT,  [at], no)
AC_PATH_PROGS(HDFVIEW,  [hdfview /usr/local/bin/hdfview /usr/local/hdfview/hdfview], no)
# Important here: gnome-terminal is broken:
#  Any commandline arguments after -e must contain escaped spaces.
# BUT: If escaped in the perl code, use of xterm/konsole is broken....
# Hence we allow only gnome-terminal.wrapper which is debian only
# :(
AC_PATH_PROGS(TERMINAL,   [xterm konsole gnome-terminal.wrapper], no)

# handle PIC options
AC_ARG_WITH([pic],
  [AS_HELP_STRING([--with-pic],
     [enable support for PIC libraries (required to compile PGPLOT on some systems)])],
  [USE_PIC=$withval],
  [USE_PIC=no])
AC_SUBST(USE_PIC)

# check for OpenMP threads and option to use at compile
AC_CHECK_HEADER(omp.h, [ HAVE_THREADS=yes ])
if test "$HAVE_THREADS" = yes; then
  # test flag to use for compilation
  AC_CACHE_CHECK([for OpenMP flag of _AC_LANG compiler], ax_cv_[]_AC_LANG_ABBREV[]_openmp, [save[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
  ax_cv_[]_AC_LANG_ABBREV[]_openmp=unknown
  # Flags to try:  -fopenmp (gcc), -openmp (icc), -mp (SGI & PGI),
  #                -xopenmp (Sun), -omp (Tru64), -qsmp=omp (AIX), none
  ax_openmp_flags="-fopenmp -openmp -mp -xopenmp -omp -qsmp=omp none"
  if test "x$OPENMP_[]_AC_LANG_PREFIX[]FLAGS" != x; then
    ax_openmp_flags="$OPENMP_[]_AC_LANG_PREFIX[]FLAGS $ax_openmp_flags"
  fi
  for ax_openmp_flag  dnl will test flags to pass to compiler
  in "-fopenmp -lgomp"                                                          dnl gcc 4.2 with explicit libgomp
  "-fopenmp "                                                                                     dnl gcc 4.2 
  "-openmp -parallel"                                                             dnl icc with explicit parallel flag
  "-openmp "                                                                                                    dnl icc
  "-mp"                                                                                                                         dnl pgi
  "-xopenmp"                                                                                                    dnl Sun
  "-omp"                                                                                                                        dnl Tru64
  "-qsmp=omp"                                                                                           dnl     AIX
  "none"                                                                                                                        dnl no openmp
  "$OPENMP_[]_AC_LANG_PREFIX[]FLAGS"  dnl flags defined by user
  #
  do
    case $ax_openmp_flag in
      none) []_AC_LANG_PREFIX[]FLAGS=$save[]_AC_LANG_PREFIX[] ;;
      *) []_AC_LANG_PREFIX[]FLAGS="$save[]_AC_LANG_PREFIX[]FLAGS $ax_openmp_flag" ;;
    esac
    AC_TRY_LINK_FUNC(omp_set_num_threads,
          [ax_cv_[]_AC_LANG_ABBREV[]_openmp=$ax_openmp_flag; break])
  done
  []_AC_LANG_PREFIX[]FLAGS=$save[]_AC_LANG_PREFIX[]FLAGS
  ]) # end AC_CACHE_CHECK
  if test "x$ax_cv_[]_AC_LANG_ABBREV[]_openmp" != "xnone"; then
    OPENMP_[]_AC_LANG_PREFIX[]FLAGS=$ax_cv_[]_AC_LANG_ABBREV[]_openmp
  fi
  # now set DEFINE for mcstas_config
  AC_SUBST([HAVE_THREADS], ["-DUSE_THREADS $OPENMP_CFLAGS "])
  AC_DEFINE([HAVE_THREADS], ["-DUSE_THREADS $OPENMP_CFLAGS "])
else
  AC_SUBST([HAVE_THREADS], [])
  AC_DEFINE([HAVE_THREADS], [])
fi

# check for MPI
if test "$MPICC" != "no"; then
  AC_CHECK_HEADER(mpi.h, , [ echo "WARNING: $MPICC may fail to compile without mpi.h" ] )
fi

# check for NeXus libraries
AC_ARG_WITH([nexus],
  [AS_HELP_STRING([--with-nexus],
     [enable support for NeXus/HDF libraries])])
if test "${with_nexus+set}" = set; then
  AC_SUBST([HAVE_NEXUS], ["-DUSE_NEXUS -lNeXus "])
  AC_DEFINE([HAVE_NEXUS], ["-DUSE_NEXUS -lNeXus "])
else
  AC_SUBST([HAVE_NEXUS], [])
  AC_DEFINE([HAVE_NEXUS], [])
fi

AC_OUTPUT(Makefile lib/tools/perl/mcstas_config.perl support/pgplot/pgplot.sh support/scilab/scilab.sh)

chmod a+x support/pgplot/pgplot.sh
chmod a+x support/scilab/scilab.sh
chmod a+x lib/tools/perl/mcstas_reconfigure

# warnings and errors
if test "$MAKE" == "no" ; then
  echo "ERROR: McStas installation requires 'make' or 'gmake'"
  exit
fi

if test "$PERL" = "no" ; then
  echo "WARNING: No Perl executable could be found !"
  echo "You will have to use"
  echo "   mcstas <file>.instr"
  echo "   $CC -o <file>.out <file>.instr -lm"
  echo "   <file>.out [simulation parameters]"
fi
if test "$TCLTK" = "no" ; then
  echo "WARNING: No Tcl/Tk installation could be found !"
  echo "You might not be able to use McGUI interface"
fi
if test "$BROWSER" = "no" ; then
  echo "WARNING: No HTML browser could be found !"
fi
if test "$SCILAB" == "no" && test "$MATLAB" == "no" && test "$PGPLOT" == "no" && test "$VRMLVIEW" == "no" ; then
  echo "WARNING: No Plotter (Matlab, Scilab, PGPLOT, VRML) could be found !"
fi

# final message at end of configure
if test "$USE_PIC" != "no" ; then
echo "Activating PIC compilation for: make install-pgplot"
fi
if test "x$HAVE_NEXUS" != "x" ; then
echo "Activating NeXus support in McStas ($HAVE_NEXUS)"
fi
if test "x$HAVE_THREADS" != "x" ; then
echo "Activating OpenMP multi-threading support in McStas ($HAVE_THREADS)"
fi
echo ""
if test "$WGET" != no ; then
  echo "Gnome support: If you experience crashes of mcgui when running in the "
  echo "  Gnome environment, please come back here and do a"
  echo "# make tk"
  echo "will install our patched version of perl-tk from the net"
fi
if test "$PGPLOT" == "no" ; then
  echo "To install PGPLOT for McStas, you need:"
  echo "= perl-PDL (perldl, pdl)"
  echo "= a fortran compiler (g77, gfortran)"
  echo "= X11-dev libraries/includes (libx11-dev, xserver-xorg-dev, libxt-dev)"
fi
if test "$PGPLOT" == "no" && test "$PERLDL" != "no" && test "$G77" != "no" ; then
  echo "PGPLOT install: you may try our automatic PGPLOT installation with"
  echo "# make install-pgplot; ./configure; make; make install"
  echo "(For 64-bit machines, reconfigure first: # ./configure --with-pic )"
else if test "$PGPLOT" == "no" ; then
  echo "Install these and re-run McStas installation ./configure"
  fi
fi
if test "$SCILAB" == "no" ; then
  echo "Scilab install: you may try our automatic Scilab installation with"
  echo ""
  echo "# make install-scilab; ./configure; make; make install"
  echo ""
  echo "(requires Linux/Intel, wget and root priviliges)"
fi
echo ""
echo "To setup the plotting environment, execute either"
echo "# make config (automatically selects plotter, "
echo "       prefers PGPLOT before Matlab before Scilab before VRML)"
if test "$SCILAB" != "no" ; then
echo "# make scilab (selects scilab)"
fi
if test "$MATLAB" != "no" ; then
echo "# make matlab (selects matlab)"
fi
if test "$PGPLOT" != "no" ; then
echo "# make pgplot (selects pgplot)"
fi
if test "$VRMLVIEW" != "no" ; then
echo "# make vrml   (selects vrml)"
fi
echo ""
echo "After (optional) plotter config, build and install McStas by executing"
echo "# make; make install"
echo ""
if test "$DASH" != "no" ; then
echo
echo WARNING: Your system includes the $DASH shell which is known to cause problems.
echo On Debian/Ubuntu systems, please dpkg-reconfigure dash and say 'no' to install dash as /bin/sh
fi