/usr/share/aclocal/ax_f90_library_setup.m4 is in autoconf-archive 20140228-1.1.
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# http://www.gnu.org/software/autoconf-archive/ax_f90_library_setup.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_F90_LIBRARY_SETUP(LIBRARY, HEADER-REGEXP, MODULE-REGEXP, LIB-REGEXP, FUNCTION-BODY)
#
# DESCRIPTION
#
# Convenience macro to set up a fortran 90 library in a simplified way.
# LIBRARY is the name of the library. HEADER-REGEXP is a regular
# expression (used by find) matched by the header file to look for (may be
# empty). MODULE-REGEXP is a regular expression (used by find) matched by
# the filename of the module (may be empty). LIB-REGEXP is a regular
# expression (used by find) matched by the filename of the library, this
# is useful either if the library filename does not follow the traditional
# libxxx.a or libxxx.so pattern, or if some specific information is
# embedded into the name, like compiler used, debugging status ...).
# FUNCTION-BODY is the body of a function (including the 'use' statements
# and the call to a function defined by the library).
#
# This macro is a simple wrapper around AX_F90_MODULE and AX_F90_LIBRARY
# that uses the parameters provided by the end user through a --with-xxx
# option to set up the search path. Both a module and a library will be
# tested, the same path will be used for both tests, so the path must be
# set up with a common parent directory of both the library file and the
# module file. The macro also automatically updates the FCFLAGS, LDFLAGS
# and LIBS variables in addition to providing the F90_HEADER_xxx,
# F90_MODULE_xxx, F90_LDFLAGS_xxx and F90_LIBS_xxx output variables.
#
# Example: suppose you have /home/nostradamus/esoteric/lib/libalchemy.a
# and /home/nostradamus/esoteric/mod/alchemy.mod which provides a function
# transmute_into_gold, you can use the following in you configure.ac:
#
# AX_F90_MODULE_EXTENSION
# if test x$ax_cv_f90_modext = xunknown ; then
# AC_MSG_ERROR([unable to find f90 modules extension])
# fi
# AX_F90_LIBRARY_SETUP(alchemy,[],alchemy.$ax_cv_f90_modext,libalchemy*,[
# use alchemy
# call transmute_into_gold('lead')
# ])
#
# and the user could configure your package using a command like this:
#
# ./configure --with-alchemy=$HOME/esoteric
#
# LICENSE
#
# Copyright (c) 2009 Luc Maisonobe <luc@spaceroots.org>
#
# 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 9
AC_DEFUN([AX_F90_LIBRARY_SETUP],[
AC_ARG_WITH([$1],[ --with-$1=path specify search path form $1 module and library],
[if test x${withval} = xno ; then
AC_MSG_WARN([$1 disabled at user option])
fi],[withval=""])
if test x$2 != x ; then
AX_F90_HEADER([$1],[$2],[$5],$withval,[
FCFLAGS="$FCFLAGS $AS_TR_SH(F90_HEADER_$1)"
],[])
fi
if test x$3 != x ; then
AX_F90_MODULE([$1],[$3],[$5],$withval,[
FCFLAGS="$FCFLAGS $AS_TR_SH(F90_MODULE_$1)"
],[])
fi
AX_F90_LIBRARY([$1],[$4],[$5],$withval,[
LDFLAGS="$LDFLAGS $AS_TR_SH(F90_LDFLAGS_$1)"
LIBS="$AS_TR_SH(F90_LIBS_$1) $LIBS"
],[])
])
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