# $NetBSD: arg-pp-main,v 1.8 2018/08/22 20:48:37 maya Exp $
#
# Copyright (c) 2005 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Johnny C. Lam.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

case $arg in
######################################################################
# Split direct paths to shared libraries into the "-Ldir -llib"
# equivalent.
######################################################################
/*/lib*.so|/*/lib*.so.[0-9]*)
	dir="${arg%/lib*}"
	lib="${arg#$dir/lib}"
	case $lib in
	*/*)		argok=yes; argmatch=yes ;;
	*.so)		lib="${lib%.so}" ;;
	*.so.[0-9]*)	lib="${lib%.so.[0-9]*}" ;;
	esac
	case $argmatch in
	yes)	;;
	*)	prepend_queue argbuf "-l$lib"
		$debug_log $wrapperlog "    (arg-pp-main) pre:  -l$lib"
		prepend_queue argbuf "-L$dir"
		$debug_log $wrapperlog "    (arg-pp-main) pre:  -L$dir"
		argmatch=yes
		;;
	esac
	;;
/*/lib*.sl|/*/lib*.sl.[0-9]*)	# HP-UX
	dir="${arg%/lib*}"
	lib="${arg#$dir/lib}"
	case $lib in
	*/*)		argok=yes; argmatch=yes ;;
	*.sl)		lib="${lib%.sl}" ;;
	*.sl.[0-9]*)	lib="${lib%.sl.[0-9]*}" ;;
	esac
	case $argmatch in
	yes)	;;
	*)	prepend_queue argbuf "-l$lib"
		$debug_log $wrapperlog "    (arg-pp-main) pre:  -l$lib"
		prepend_queue argbuf "-L$dir"
		$debug_log $wrapperlog "    (arg-pp-main) pre:  -L$dir"
		argmatch=yes
		;;
	esac
	;;
######################################################################
# Remove extraneous comma in "-Wl,-R,/dir" and in "-Wl,-L,/dir".
######################################################################
-Wl,-L,*)
	arg="-Wl,-L${arg#-Wl,-L,}"
	$debug_log $wrapperlog "    (arg-pp-main) pre:  $arg"
	prepend_queue argbuf "$arg"
	argmatch=yes
	;;
-Wl,-R,*)
	arg="-Wl,-R${arg#-Wl,-R,}"
	$debug_log $wrapperlog "    (arg-pp-main) pre:  $arg"
	prepend_queue argbuf "$arg"
	argmatch=yes
	;;
######################################################################
# Merge "-Wl,-R -Wl,/dir" into a single "-Wl,-R/dir".  Same for -Wl,-L,
# -Wl,-rpath and -Wl,-rpath-link.
######################################################################
-Wl,-[LR])
	pop_queue argbuf nextarg
	$debug_log $wrapperlog "    (arg-pp-main) pop:  $nextarg"
	nextarg="${nextarg#-Wl,}"
	$debug_log $wrapperlog "    (arg-pp-main) pre:  $arg$nextarg"
	prepend_queue argbuf "$arg$nextarg"
	argmatch=yes
	;;
-Wl,-rpath|-Wl,-rpath-link|-Wl,--rpath)
	pop_queue argbuf nextarg
	$debug_log $wrapperlog "    (arg-pp-main) pop:  $nextarg"
	nextarg="${nextarg#-Wl,}"
	$debug_log $wrapperlog "    (arg-pp-main) pre:  $arg,$nextarg"
	prepend_queue argbuf "$arg,$nextarg"
	argmatch=yes
	;;
######################################################################
# Remove rpath options that try to add relative paths to the runtime
# library search path.  This basically cleans up after lazy programmers
# who can't write Makefiles.
######################################################################
-R[!/]*|-Wl,-R[!/]*|\
-Wl,-rpath,[!/]*|-Wl,-rpath-link,[!/]*|-Wl,--rpath,[!/]*)
	$debug_log $wrapperlog "    (arg-pp-main) drop: $arg"
	argmatch=yes
	;;
######################################################################
# Remove consecutive, repeated library options.
######################################################################
-l*)
	head_queue argbuf nextarg
	while $test "$nextarg" = "$arg"; do
		pop_queue argbuf nextarg
		$debug_log $wrapperlog "    (arg-pp-main) drop: $nextarg"
		if queue_is_empty argbuf; then
			break
		else
			head_queue argbuf nextarg
		fi
	done
	argok=yes
	argmatch=yes
	;;
#######################################################################
# The -o option takes an extra argument that should be passed unmodified.
#######################################################################
-o)
	skipargs=1
	argok=yes
	argmatch=yes
	;;
#######################################################################
# GNU ld uses "--dynamic-linker /path/to/shared/object" to set the
# dynamic linker code for ELF executables.
#######################################################################
--dynamic-linker)
	skipargs=1
	argok=yes
	argmatch=yes
	;;
esac