# ===========================================================================

#   https://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html

# ===========================================================================

#

# SYNOPSIS

#

#   AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT])

#

# DESCRIPTION

#

#   For every FLAG1, FLAG2 it is checked whether the linker works with the

#   flag.  If it does, the flag is added FLAGS-VARIABLE

#

#   If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is

#   used. During the check the flag is always added to the linker's flags.

#

#   If EXTRA-FLAGS is defined, it is added to the linker's default flags

#   when the check is done.  The check is thus made with the flags: "LDFLAGS

#   EXTRA-FLAGS FLAG".  This can for example be used to force the linker to

#   issue an error when a bad flag is given.

#

#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.

#

#   NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG.

#   Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS.

#

# LICENSE

#

#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>

#

#   This program is free software: you can redistribute it and/or modify it

#   under the terms of the GNU General Public License as published by the

#   Free Software Foundation, either version 3 of the License, or (at your

#   option) any later version.

#

#   This program is distributed in the hope that it will be useful, but

#   WITHOUT ANY WARRANTY; without even the implied warranty of

#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General

#   Public License for more details.

#

#   You should have received a copy of the GNU General Public License along

#   with this program. If not, see <https://www.gnu.org/licenses/>.

#

#   As a special exception, the respective Autoconf Macro's copyright owner

#   gives unlimited permission to copy, distribute and modify the configure

#   scripts that are the output of Autoconf when processing the Macro. You

#   need not follow the terms of the GNU General Public License when using

#   or distributing such scripts, even though portions of the text of the

#   Macro appear in them. The GNU General Public License (GPL) does govern

#   all other use of the material that constitutes the Autoconf Macro.

#

#   This special exception to the GPL applies to versions of the Autoconf

#   Macro released by the Autoconf Archive. When you make and distribute a

#   modified version of the Autoconf Macro, you may extend this special

#   exception to the GPL to apply to your modified version as well.

#serial 6

AC_DEFUN([AX_APPEND_LINK_FLAGS],

[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])

AX_REQUIRE_DEFINED([AX_APPEND_FLAG])

for flag in $1; do

  AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3], [$4])

done

])dnl AX_APPEND_LINK_FLAGS