Commit 905bfba7 authored by Pietro Incardona's avatar Pietro Incardona

PETSC introduction

parent e28bda91
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_lib_petsc.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_LIB_PETSC()
#
# DESCRIPTION
#
# This macro provides tests of the availability of PETSC library.
#
#
# The macro adds a --with-petsc option accepting one of three values:
#
# no - do not check for the PETSC library.
# yes - do check for PETSC library in standard locations.
# path - complete path to the PETSC library.
#
# If PETSC is successfully found, this macro calls
#
# AC_SUBST(PETSC_INCLUDE)
# AC_SUBST(PETSC_LIB)
# AC_DEFINE(HAVE_PETSC)
#
# and sets with_petsc="yes"
#
# If PETSC is disabled or not found, this macros sets with_petsc="no"
#
# Your configuration script can test $with_petsc to take any further
# actions. PETSC_{INCLUDE,LIB} may be used when building with C or C++.
#
# To use the macro, one would code one of the following in "configure.ac"
# before AC_OUTPUT:
#
# 1) dnl Check for PETSC support
# AX_LIB_PETSC()
#
# One could test $with_petsc for the outcome or display it as follows
#
# echo "PETSC support: $with_petsc"
#
# You could also for example, override the default CC in "configure.ac"
#
# LICENSE
#
# Copyright (c) 2009 Timothy Brown <tbrown@freeshell.org>
# Copyright (c) 2010 Rhys Ulerich <rhys.ulerich@gmail.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 12
AC_DEFUN([AX_LIB_PETSC], [
AC_MSG_CHECKING(for PETSC library)
AC_REQUIRE([AC_PROG_CC])
#
# User hints...
#
AC_ARG_VAR([PETSC], [PETSC library location])
AC_ARG_WITH([petsc],
[AC_HELP_STRING([--with-petsc],
[user defined path to PETSC library])],
[
if test -n "$PETSC" ; then
AC_MSG_RESULT(yes)
with_petsc=$PETSC
elif test "$withval" != no ; then
AC_MSG_RESULT(yes)
with_petsc=$withval
else
AC_MSG_RESULT(no)
fi
],
[
if test -n "$PETSC" ; then
with_petsc=$PETSC
AC_MSG_RESULT(yes)
else
with_petsc=/usr
if test ! -f "$with_petsc/include/petsc.h" ; then
with_petsc=/usr/local
if test ! -f "$with_petsc/include/petsc.h" ; then
with_petsc=""
AC_MSG_RESULT(failed)
else
AC_MSG_RESULT(yes)
fi
else
AC_MSG_RESULT(yes)
fi
fi
])
#
# locate PETSC library
#
if test -n "$with_petsc" ; then
old_CC=$CC
old_CFLAGS=$CFLAGS
old_LDFLAGS=$LDFLAGS
CFLAGS="-I$with_petsc/include"
LDFLAGS="-L$with_petsc/lib"
CC=$CXX
AC_LANG_SAVE
AC_LANG_C
AC_CHECK_HEADER([petsc.h],petsc_h=yes,## Copy LIB and include in the target directory
AC_MSG_WARN([could not find header file petsc.h]))
AC_CHECK_LIB([petsc],[PetscTrMalloc],petsc_lib=yes,AC_MSG_WARN([could not find libpetsc]))
AC_LANG_RESTORE
CFLAGS=$old_CFLAGS
LDFLAGS=$old_LDFLAGS
CC=$old_CC
AC_MSG_CHECKING(PETSC in $with_petsc)
if test "$petsc_lib" = "yes" -a "$petsc_h" = "yes" ; then
AC_SUBST(PETSC_INCLUDE, [-I$with_petsc/include])
AC_SUBST(PETSC_LIB, [-L$with_petsc/lib])
AC_MSG_RESULT(ok)
AC_DEFINE(HAVE_PETSC,1,[Define if you have PETSC library])
else
AC_MSG_RESULT(failed)
fi
fi
#
#
#
if test x = x"$PETSC_LIB" ; then
ifelse([$2],,[AC_MSG_ERROR(Failed to find valid PETSC library)],[$2])
:
else
ifelse([$1],,[],[$1])
:
fi
])dnl AX_LIB_PETSC
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