1
0
mirror of https://github.com/djcb/mu.git synced 2024-06-20 06:46:50 +02:00
mu/m4/ax_append_link_flags.m4
Dirk-Jan C. Binnema 8aa433b56b m4: grab newer upstream m4 (for code-coverage)
Grab some newer version of the autotools m4 archive, as we need those to
setup code-coverage.

Remove some unneeded ones.
2020-01-01 15:56:47 +02:00

45 lines
1.7 KiB
Plaintext

# ===========================================================================
# 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>
#
# 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 7
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