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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_f90_library.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_F90_LIBRARY(LIBRARY, LIB-REGEXP, FUNCTION-BODY [, SEARCH-PATH [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
#
# DESCRIPTION
#
# Set up the compiler flags to link a given fortran 90 library LIBRARY is
# the name of the library. 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) SEARCH-PATH is a colon-separated list
# of directories that will be used as the base directories for 'find' to
# look for the library file. If empty, the search path will be composed of
# $prefix/lib, $ac_default_prefix/lib, and $LD_LIBRARY_PATH. Two output
# variables named F90_LDFLAGS_xxx and F90_LIBS_xxx will be set up with the
# proper flag for substitution in Makefiles (xxx is built from the first
# argument, with autoconf traditional escapes).
#
# 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 13
AC_DEFUN([AX_F90_LIBRARY],[
AS_VAR_PUSHDEF([ax_ldflags],[ax_cv_f90_ldflags_$1])
AS_VAR_PUSHDEF([ax_libs],[ax_cv_f90_libs_$1])
AC_MSG_CHECKING([$1 Fortran 90 library])
AC_LANG_PUSH(Fortran)
AS_VAR_SET([ax_ldflags],"")
AS_VAR_SET([ax_libs],"not found")
if test "x$4" = x ; then
if test "x$prefix" != "xNONE" ; then
ax_search="$prefix:$ac_default_prefix"
else
ax_search="$ac_default_prefix"
fi
for ax_base in "" `echo $LD_LIBRARY_PATH | tr ':' '\012'` ; do
if test "x$ax_base" != x ; then
changequote(,)dnl
ax_base=`echo $ax_base | sed 's,/[^/]*$,,'`
changequote([,])dnl
ax_search="${ax_search}:${ax_base}"
fi
done
else
ax_search="$4"
fi
ax_save_LDFLAGS="$LDFLAGS"
ax_save_LIBS="$LIBS"
for ax_base in `echo $ax_search | tr ':' '\012'` ; do
if test "AS_VAR_GET(ax_libs)" = "not found" ; then
for ax_lib in "" `find $ax_base -follow -name '$2' -print` ; do
if test "x$ax_lib" != x ; then
changequote(,)dnl
ax_dir=`echo $ax_lib | sed 's,/[^/]*$,,'`
ax_lib=`echo $ax_lib | sed 's,.*/\([^/]*\)$,\1,'`
changequote([,])dnl
case "$ax_lib" in
lib*)
changequote(,)dnl
ax_lib="`echo $ax_lib | sed 's,lib\(.*\)\.[^.]*$,\1,'`"
changequote([,])dnl
AS_VAR_SET([ax_ldflags],"-L$ax_dir")
AS_VAR_SET([ax_libs],"-l$ax_lib")
;;
*)
AS_VAR_SET([ax_ldflags],"")
AS_VAR_SET(ax_libs,"$ax_lib")
;;
esac
LDFLAGS="$ax_save_LDFLAGS AS_VAR_GET(ax_ldflags)"
LIBS="AS_VAR_GET(ax_libs) $ax_save_LIBS"
AC_LINK_IFELSE([program conftest_program
$3
end program conftest_program
],[],[AS_VAR_SET(ax_ldflags,"")
AS_VAR_SET(ax_libs,"not found")
])
fi
done
fi
done
AC_LANG_POP(Fortran)
AC_MSG_RESULT([AS_VAR_GET(ax_ldflags) AS_VAR_GET(ax_libs)])
if test "AS_VAR_GET(ax_libs)" = "not found"; then
AS_TR_SH(F90_LDFLAGS_$1)=""
AS_TR_SH(F90_LIBS_$1)=""
$6
else
AS_TR_SH(F90_LDFLAGS_$1)=AS_VAR_GET(ax_ldflags)
AS_TR_SH(F90_LIBS_$1)=AS_VAR_GET(ax_libs)
$5
fi
AC_SUBST(AS_TR_SH(F90_LDFLAGS_$1))
AC_SUBST(AS_TR_SH(F90_LIBS_$1))
AS_VAR_POPDEF([ax_libs])
AS_VAR_POPDEF([ax_ldflags])
])
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