1*7c568831SAndroid Build Coastguard Worker# =========================================================================== 2*7c568831SAndroid Build Coastguard Worker# https://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html 3*7c568831SAndroid Build Coastguard Worker# =========================================================================== 4*7c568831SAndroid Build Coastguard Worker# 5*7c568831SAndroid Build Coastguard Worker# SYNOPSIS 6*7c568831SAndroid Build Coastguard Worker# 7*7c568831SAndroid Build Coastguard Worker# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) 8*7c568831SAndroid Build Coastguard Worker# 9*7c568831SAndroid Build Coastguard Worker# DESCRIPTION 10*7c568831SAndroid Build Coastguard Worker# 11*7c568831SAndroid Build Coastguard Worker# For every FLAG1, FLAG2 it is checked whether the linker works with the 12*7c568831SAndroid Build Coastguard Worker# flag. If it does, the flag is added FLAGS-VARIABLE 13*7c568831SAndroid Build Coastguard Worker# 14*7c568831SAndroid Build Coastguard Worker# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is 15*7c568831SAndroid Build Coastguard Worker# used. During the check the flag is always added to the linker's flags. 16*7c568831SAndroid Build Coastguard Worker# 17*7c568831SAndroid Build Coastguard Worker# If EXTRA-FLAGS is defined, it is added to the linker's default flags 18*7c568831SAndroid Build Coastguard Worker# when the check is done. The check is thus made with the flags: "LDFLAGS 19*7c568831SAndroid Build Coastguard Worker# EXTRA-FLAGS FLAG". This can for example be used to force the linker to 20*7c568831SAndroid Build Coastguard Worker# issue an error when a bad flag is given. 21*7c568831SAndroid Build Coastguard Worker# 22*7c568831SAndroid Build Coastguard Worker# INPUT gives an alternative input source to AC_COMPILE_IFELSE. 23*7c568831SAndroid Build Coastguard Worker# 24*7c568831SAndroid Build Coastguard Worker# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG. 25*7c568831SAndroid Build Coastguard Worker# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS. 26*7c568831SAndroid Build Coastguard Worker# 27*7c568831SAndroid Build Coastguard Worker# LICENSE 28*7c568831SAndroid Build Coastguard Worker# 29*7c568831SAndroid Build Coastguard Worker# Copyright (c) 2011 Maarten Bosmans <[email protected]> 30*7c568831SAndroid Build Coastguard Worker# 31*7c568831SAndroid Build Coastguard Worker# Copying and distribution of this file, with or without modification, are 32*7c568831SAndroid Build Coastguard Worker# permitted in any medium without royalty provided the copyright notice 33*7c568831SAndroid Build Coastguard Worker# and this notice are preserved. This file is offered as-is, without any 34*7c568831SAndroid Build Coastguard Worker# warranty. 35*7c568831SAndroid Build Coastguard Worker 36*7c568831SAndroid Build Coastguard Worker#serial 7 37*7c568831SAndroid Build Coastguard Worker 38*7c568831SAndroid Build Coastguard WorkerAC_DEFUN([AX_APPEND_LINK_FLAGS], 39*7c568831SAndroid Build Coastguard Worker[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) 40*7c568831SAndroid Build Coastguard WorkerAX_REQUIRE_DEFINED([AX_APPEND_FLAG]) 41*7c568831SAndroid Build Coastguard Workerfor flag in $1; do 42*7c568831SAndroid Build Coastguard Worker AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3], [$4]) 43*7c568831SAndroid Build Coastguard Workerdone 44*7c568831SAndroid Build Coastguard Worker])dnl AX_APPEND_LINK_FLAGS 45