#!/usr/bin/env bash
#
#   Script for various external toolchain tasks, refer to
#   the --help output for more information.
#
#   Copyright (C) 2012 Jo-Philipp Wich <jow@openwrt.org>
#
#   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 2 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, write to the Free Software
#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

CC=""
CXX=""
CPP=""

CFLAGS=""
TOOLCHAIN="."

LIBC_TYPE=""


# Library specs
LIB_SPECS="
	c:        ld-* lib{anl,c,cidn,crypt,dl,m,nsl,nss_dns,nss_files,resolv,util}
	rt:       librt-* librt
	pthread:  libpthread-* libpthread
	stdcpp:   libstdc++
	gcc:      libgcc_s
	ssp:      libssp
	gfortran: libgfortran
"

# Binary specs
BIN_SPECS="
	ldd:       ldd
	ldconfig:  ldconfig
	gdb:       gdb
	gdbserver: gdbserver
"


test_c() {
	cat <<-EOT | "${CC:-false}" $CFLAGS -o /dev/null -x c - 2>/dev/null
		#include <stdio.h>

		int main(int argc, char **argv)
		{
			printf("Hello, world!\n");
			return 0;
		}
	EOT
}

test_cxx() {
	cat <<-EOT | "${CXX:-false}" $CFLAGS -o /dev/null -x c++ - 2>/dev/null
		#include <iostream>

		using namespace std;

		int main()
		{
			cout << "Hello, world!" << endl;
			return 0;
		}
	EOT
}

test_softfloat() {
	cat <<-EOT | "$CC" $CFLAGS -msoft-float -o /dev/null -x c - 2>/dev/null
		int main(int argc, char **argv)
		{
			double a = 0.1;
			double b = 0.2;
			double c = (a + b) / (a * b);
			return 1;
		}
	EOT
}

test_uclibc() {
	local sysroot="$("$CC" $CFLAGS -print-sysroot 2>/dev/null)"
	if [ -d "${sysroot:-$TOOLCHAIN}" ]; then
		local lib
		for lib in "${sysroot:-$TOOLCHAIN}"/{lib,usr/lib,usr/local/lib}/ld-uClibc*.so*; do
			if [ -f "$lib" ] && [ ! -h "$lib" ]; then
				return 0
			fi
		done
	fi
	return 1
}

test_feature() {
	local feature="$1"; shift

	# find compilers, libc type
	probe_cc
	probe_cxx
	probe_libc

	# common toolchain feature tests
	case "$feature" in
		c)     test_c;         return $? ;;
		c++)   test_cxx;       return $? ;;
		soft*) test_softfloat; return $? ;;
	esac

	# assume eglibc/glibc supports all libc features
	if [ "$LIBC_TYPE" != "uclibc" ]; then
		return 0
	fi

	# uclibc feature tests
	local inc
	local sysroot="$("$CC" "$@" -muclibc -print-sysroot 2>/dev/null)"
	for inc in "include" "usr/include" "usr/local/include"; do
		local conf="${sysroot:-$TOOLCHAIN}/$inc/bits/uClibc_config.h"
		if [ -f "$conf" ]; then
			case "$feature" in
				lfs)     grep -q '__UCLIBC_HAS_LFS__ 1'     "$conf"; return $?;;
				ipv6)    grep -q '__UCLIBC_HAS_IPV6__ 1'    "$conf"; return $?;;
				rpc)     grep -q '__UCLIBC_HAS_RPC__ 1'     "$conf"; return $?;;
				locale)  grep -q '__UCLIBC_HAS_LOCALE__ 1'  "$conf"; return $?;;
				wchar)   grep -q '__UCLIBC_HAS_WCHAR__ 1'   "$conf"; return $?;;
				threads) grep -q '__UCLIBC_HAS_THREADS__ 1' "$conf"; return $?;;
			esac
		fi
	done

	return 1
}


find_libs() {
	local spec="$(echo "$LIB_SPECS" | sed -ne "s#^[[:space:]]*$1:##ip")"

	if [ -n "$spec" ] && probe_cpp; then
		local libdir libdirs
		for libdir in $(
			"$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \
				sed -ne 's#:# #g; s#^LIBRARY_PATH=##p'
		); do
			if [ -d "$libdir" ]; then
				libdirs="$libdirs $(cd "$libdir"; pwd)/"
			fi
		done

		local pattern
		for pattern in $(eval echo $spec); do
			find $libdirs -name "$pattern.so*" | sort -u
		done

		return 0
	fi

	return 1
}

find_bins() {
	local spec="$(echo "$BIN_SPECS" | sed -ne "s#^[[:space:]]*$1:##ip")"

	if [ -n "$spec" ] && probe_cpp; then
		local sysroot="$("$CPP" -print-sysroot)"

		local bindir bindirs
		for bindir in $(
			echo "${sysroot:-$TOOLCHAIN}/bin";
			echo "${sysroot:-$TOOLCHAIN}/usr/bin";
			echo "${sysroot:-$TOOLCHAIN}/usr/local/bin";
 			"$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \
				sed -ne 's#:# #g; s#^COMPILER_PATH=##p'
		); do
			if [ -d "$bindir" ]; then
				bindirs="$bindirs $(cd "$bindir"; pwd)/"
			fi
		done

		local pattern
		for pattern in $(eval echo $spec); do
			find $bindirs -name "$pattern" | sort -u
		done

		return 0
	fi

	return 1
}


wrap_bin_cc() {
	local out="$1"
	local bin="$2"

	echo    '#!/bin/sh'                                                > "$out"
	echo    'for arg in "$@"; do'                                     >> "$out"
	echo    ' case "$arg" in -l*|-L*|-shared|-static)'                >> "$out"
	echo -n '  exec "'"$bin"'" '"$CFLAGS"' ${STAGING_DIR:+'           >> "$out"
	echo -n '-idirafter "$STAGING_DIR/usr/include" '                  >> "$out"
	echo -n '-L "$STAGING_DIR/usr/lib" '                              >> "$out"
	echo    '-Wl,-rpath-link,"$STAGING_DIR/usr/lib"} "$@" ;;'         >> "$out"
	echo    ' esac'                                                   >> "$out"
	echo    'done'                                                    >> "$out"
	echo -n 'exec "'"$bin"'" '"$CFLAGS"' ${STAGING_DIR:+'             >> "$out"
	echo    '-idirafter "$STAGING_DIR/usr/include"} "$@"'             >> "$out"

	chmod +x "$out"
}

wrap_bin_ld() {
	local out="$1"
	local bin="$2"

	echo    '#!/bin/sh'                                                > "$out"
	echo -n 'exec "'"$bin"'" ${STAGING_DIR:+'                         >> "$out"
	echo -n '-L "$STAGING_DIR/usr/lib" '                              >> "$out"
	echo    '-rpath-link "$STAGING_DIR/usr/lib"} "$@"'                >> "$out"

	chmod +x "$out"
}

wrap_bin_other() {
	local out="$1"
	local bin="$2"

	echo    '#!/bin/sh'                                                > "$out"
	echo    'exec "'"$bin"'" "$@"'                                    >> "$out"

	chmod +x "$out"
}

wrap_bins() {
	if probe_cc; then
		mkdir -p "$1" || return 1

		local cmd
		for cmd in "${CC%-*}-"*; do
			if [ -x "$cmd" ]; then
				local out="$1/${cmd##*/}"
				local bin="$cmd"

				if [ -x "$out" ] && ! grep -q STAGING_DIR "$out"; then
					mv "$out" "$out.bin"
					bin='$(dirname "$0")/'"${out##*/}"'.bin'
				fi

				case "${cmd##*/}" in
					*-*cc|*-*cc-*|*-*++|*-*++-*|*-cpp)
						wrap_bin_cc "$out" "$bin"
					;;
					*-ld)
						wrap_bin_ld "$out" "$bin"
					;;
					*)
						wrap_bin_other "$out" "$bin"
					;;
				esac
			fi
		done

		return 0
	fi

	return 1
}


print_config() {
	local mktarget="$1"
	local mksubtarget

	local target="$("$CC" $CFLAGS -dumpmachine)"
	local cpu<style>pre { line-height: 125%; margin: 0; }
td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight { background: #ffffff; }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="c"># </span>
<span class="c"># Copyright (C) 2006 OpenWrt.org</span>
<span class="c">#</span>
<span class="c"># This is free software, licensed under the GNU General Public License v2.</span>
<span class="c"># See /LICENSE for more information.</span>
<span class="c">#</span>
<span class="c"># $Id$</span>

<span class="cp">include $(TOPDIR)/rules.mk</span>

<span class="nv">PKG_NAME</span><span class="o">:=</span>linux-atm
<span class="nv">PKG_VERSION</span><span class="o">:=</span><span class="m">2</span>.4.1
<span class="nv">PKG_RELEASE</span><span class="o">:=</span><span class="m">1</span>

<span class="nv">PKG_SOURCE</span><span class="o">:=</span><span class="k">$(</span>PKG_NAME<span class="k">)</span>_<span class="k">$(</span>PKG_VERSION<span class="k">)</span>.orig.tar.gz
<span class="nv">PKG_SOURCE_URL</span><span class="o">:=</span>http://ftp.debian.org/debian/pool/main/l/linux-atm/
<span class="nv">PKG_MD5SUM</span><span class="o">:=</span>84fef49cc39ff2605204246666f65864
<span class="nv">PKG_CAT</span><span class="o">:=</span>zcat

<span class="nv">PKG_BUILD_DIR</span><span class="o">:=</span><span class="k">$(</span>BUILD_DIR<span class="k">)</span>/<span class="k">$(</span>PKG_NAME<span class="k">)</span>-<span class="k">$(</span>PKG_VERSION<span class="k">)</span>
<span class="nv">PKG_INSTALL_DIR</span><span class="o">:=</span><span class="k">$(</span>PKG_BUILD_DIR<span class="k">)</span>/ipkg-install

<span class="cp">include $(INCLUDE_DIR)/package.mk</span>

<span class="cp">define Package/linux-atm/Default</span>
  URL:<span class="o">=</span>http://linux-atm.sourceforge.net/
<span class="cp">endef</span>

<span class="cp">define Package/linux-atm</span>
  <span class="k">$(</span>call Package/linux-atm/Default<span class="k">)</span>
  SECTION:<span class="o">=</span>libs
  CATEGORY:<span class="o">=</span>Libraries
  TITLE:<span class="o">=</span>Linux ATM Library
  DESCRIPTION:<span class="o">=</span><span class="se">\</span>
	This package contains a library <span class="k">for</span> accessing the Linux ATM subsystem.
<span class="cp">endef</span>

<span class="cp">define Package/br2684ctl</span>
  <span class="k">$(</span>call Package/linux-atm/Default<span class="k">)</span>
  SECTION:<span class="o">=</span>net
  CATEGORY:<span class="o">=</span>Network
  DEPENDS:<span class="o">=</span>+linux-atm
  TITLE:<span class="o">=</span>RFC2684 bridging utility
  DESCRIPTION:<span class="o">=</span><span class="se">\</span>
	This package contains an ATM RFC2684 bridging utility.
<span class="cp">endef</span>

<span class="cp">define Build/Configure</span>
	<span class="k">$(</span>call Build/Configure/Default<span class="k">)</span>
<span class="c">	# prevent autoheader invocation</span>
	touch <span class="k">$(</span>PKG_BUILD_DIR<span class="k">)</span>/stamp-h.in
<span class="cp">endef</span>

<span class="cp">define Build/Compile</span>
	<span class="k">$(</span>call Build/Compile/Default, <span class="se">\</span>
		<span class="nv">DESTDIR</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>PKG_INSTALL_DIR<span class="k">)</span><span class="s2">&quot;</span> <span class="se">\</span>
		all install <span class="se">\</span>
	<span class="k">)</span>
<span class="cp">endef</span>

<span class="cp">define Build/InstallDev</span>
	mkdir -p <span class="k">$(</span>STAGING_DIR<span class="k">)</span>/usr/include
	<span class="k">$(</span>CP<span class="k">)</span>	<span class="k">$(</span>PKG_INSTALL_DIR<span class="k">)</span>/usr/include/atm<span class="o">{</span>,d,sap<span class="o">}</span>.h <span class="se">\</span>
		<span class="k">$(</span>STAGING_DIR<span class="k">)</span>/usr/include/
	mkdir -p <span class="k">$(</span>STAGING_DIR<span class="k">)</span>/usr/lib
	<span class="k">$(</span>CP<span class="k">)</span>	<span class="k">$(</span>PKG_INSTALL_DIR<span class="k">)</span>/usr/lib/libatm.<span class="o">{</span>a,so*<span class="o">}</span> <span class="se">\</span>
		<span class="k">$(</span>STAGING_DIR<span class="k">)</span>/usr/lib/
<span class="cp">endef</span>

<span class="cp">define Build/UninstallDev</span>
	rm -rf	<span class="k">$(</span>STAGING_DIR<span class="k">)</span>/usr/include/atm<span class="o">{</span>,d,sap<span class="o">}</span>.h <span class="se">\</span>
		<span class="k">$(</span>STAGING_DIR<span class="k">)</span>/usr/lib/libatm.<span class="o">{</span>a,so*<span class="o">}</span>
<span class="cp">endef</span>

<span class="cp">define Package/linux-atm/install</span>
	install -d -m0755 <span class="k">$(</span><span class="m">1</span><span class="k">)</span>/usr/lib
	cp -f <span class="k">$(</span>PKG_INSTALL_DIR<span class="k">)</span>/usr/lib/libatm.so.1 <span class="k">$(</span><span class="m">1</span><span class="k">)</span>/usr/lib
<span class="cp">endef</span>

<span class="cp">define Package/br2684ctl/install</span>
	install -d -m0755 <span class="k">$(</span><span class="m">1</span><span class="k">)</span>/usr/sbin
	<span class="k">$(</span>CP<span class="k">)</span> <span class="k">$(</span>PKG_INSTALL_DIR<span class="k">)</span>/usr/sbin/br2684ctl <span class="k">$(</span><span class="m">1</span><span class="k">)</span>/usr/sbin/
	install -d -m0755 <span class="k">$(</span><span class="m">1</span><span class="k">)</span>/etc/hotplug.d/net
	install -m0644 ./files/br2684.hotplug <span class="k">$(</span><span class="m">1</span><span class="k">)</span>/etc/hotplug.d/net/30-br2684
<span class="cp">endef</span>

<span class="k">$(</span><span class="nv">eval</span> <span class="k">$(</span><span class="nv">call</span> <span class="nv">BuildPackage</span>,<span class="nv">linux-atm</span><span class="k">))</span>
<span class="k">$(</span><span class="nv">eval</span> <span class="k">$(</span><span class="nv">call</span> <span class="nv">BuildPackage</span>,<span class="nv">br2684ctl</span><span class="k">))</span>
</pre></div>
</code></pre></td></tr></table>
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