Adding missing file

m4/ax_petsc_lib.m4

+# ===========================================================================
+#        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 $HDF5_INCLUDE $METIS_INCLUDE "
+                        LDFLAGS="-L$with_petsc/lib $HDF5_LDFLAGS  $HDF5_LIBS $METIS_LIB -lmetis "
+			CC=$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 $with_petsc)
+                        if test x"$petsc_lib" = x"yes" -a x"$petsc_h" = x"yes" ; then
+                                AC_SUBST(PETSC_INCLUDE, [-I$with_petsc/include])
+                                AC_SUBST(PETSC_LIB, ["-L$with_petsc/lib -lpetsc"])
+                                AC_MSG_RESULT(ok)
+ 				AC_DEFINE(HAVE_PETSC,1,[Define if you have PETSC library])
+                        else
+                                AC_MSG_RESULT(failed)
+                        fi
+                fi
+                #
+                #
+                #
+                if test x = x"$PETSC_LIB" ; then
+                        ifelse([$2],,[],[$2])
+                        :
+                else
+                        ifelse([$1],,[],[$1])
+                        :
+                fi
+        ])dnl AX_LIB_PETSC