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######################################################################
# $Id: README.configure 9580 2004-08-25 21:52:54Z guido $
######################################################################
#
# This file gives some hints on how to use autoconf and configure.in
# to write configuration options for deal.II
######################################################################
######################################################################
# Including optional libraries
######################################################################
For the library blob, after finding it, we fill with appropriate values:
AC_DEFINE(HAVE_BLOB) # goes into base/include/base/config.h
AC_SUBST(BLOB_LIB) # Additional libraries
AC_SUBST(BLOB_INCLUDE_DIR) # Starts with -I; include path for compiler
The last two go int common/Make.global_options.
######################################################################
# I. Libraries without headers in ld's include path
######################################################################
In order to allow for configuring an optional library blob, add the
following lines to configure.in:
AC_ARG_WITH(blob,
[ --with-blob=bloblib use the blob library],
DEAL_II_WITH_BLOB($withval))
If the library should be included by default, use:
AC_ARG_WITH(blob,
[ --with-blob=bloblib use the blob library],
DEAL_II_WITH_BLOB($withval),
DEAL_II_WITH_BLOB(yes))
Now, in aclocal.m4, define the macro DEAL_II_WITH_BLOB like:
AC_DEFUN(DEAL_II_WITH_BLOB, dnl
[
if test "x$1" != "xyes" ; then
AC_CHECK_LIB($1, my_function,
[
AC_SUBST(BLOB_LIB,"-l$1")
],
AC_MSG_RESULT(not found),
$F77LIBS)
else
AC_CHECK_LIB(blob, daxpy_,
[
AC_SUBST(BLOB_LIB,"-lblob")
],
AC_MSG_RESULT(not found),
$F77LIBS)
fi
AC_DEFINE(HAVE_BLOB)
AC_SUBST(NEEDS_F77LIBS, "yes")
if test "x$with_plip" = "x" ; then
with_plip = "yes;
fi
])
We have to distinguish the cases where --with-blob has an argument or
not. If it has, it is the name of the library (like -lblas is
-lperflib on Solaris). If it has no argument, the argument to this
function is "yes" and must be replaced by "blob" in the second part.
The additional variable F77LIBS occuring several times shos how to
handle FORTRAN libraries. These usually require additional supporting
libraries specified somewhere else by configure.
Finally, if -lblob requires -lplip, we set the option --with-plip in
the end in order to include this optional library, too. Make sure you
check for plip after blob.
######################################################################
# II. Libraries with header files
######################################################################
to be continued
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