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click-buildtool.in
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click-buildtool.in
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#! /bin/sh
# click-buildtool -- build tools for Click
# Eddie Kohler
#
# Copyright (c) 2000-2001 Massachusetts Institute of Technology
# Copyright (c) 2000-2008 Mazu Networks, Inc.
# Copyright (c) 2001-2003 International Computer Science Institute
# Copyright (c) 2008 Meraki, Inc.
# Copyright (c) 2004-2011 Regents of the University of California
# Copyright (c) 2000-2014 Eddie Kohler
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, subject to the conditions
# listed in the Click LICENSE file. These conditions include: you must
# preserve this copyright notice, and you cannot mention the copyright
# holders in advertising related to the Software without their permission.
# The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
# notice is a summary of the Click LICENSE file; the license in that file is
# legally binding.
set_clickbuild () {
clickbuild_prefix="`echo "$1" | sed 's,/$,,'`"
clickbuild_clickdatadir="@clickbuild_clickdatadir@"
}
prefix=@prefix@
set_clickbuild "$prefix"
gmake=@GMAKE@
verbose=""
elem2=""
default_provisions="@provisions@"
driver_provisions="@DRIVERS@"
if [ -z "$CLICK_ELEM_RAND_MAX" ] ; then
CLICK_ELEM_RAND_MAX=0
fi
export LC_COLLATE=C
trap "exit 1" HUP
# find good versions of awk and grep
awk="@AWK@"
grep="@GREP@"
egrep="@EGREP@"
echo_n () {
# suns can't echo -n, and Mac OS X can't echo "x\c"
echo "$@" | tr -d '
'
}
###############
# SHORTENSYMS #
###############
shortensyms_usage () {
echo "Usage: click-buildtool shortensyms OBJ..." 1>&2
echo "Try 'click-buildtool shortensyms --help' for more information." 1>&2
exit 1
}
shortensyms () {
driver=""
date=`date`
objs=
len=56
while [ x"$1" != x ]; do
case $1 in
-n|--l|--le|--len|--leng|--lengt|--length)
if test $# -lt 2; then shortensyms_usage; fi
len="$2"; shift 2;;
-n*)
len="`echo "$1" | sed 's/^-n//'`"; shift 1;;
--l=*|--le=*|--len=*|--leng=*|--lengt=*|--length=*)
len="`echo "$1" | sed 's/^[^=]*=//'`"; shift 1;;
-h|--h|--he|--hel|--help)
cat <<'EOF' 1>&2
'Click-buildtool shortensyms' shortens the symbols in the object files listed
on the command line to be at most 56 characters long.
Usage: click-buildtool shortensyms OBJ...
Options:
-n, --length=N Set maximum symbol length to N.
-h, --help Print this message and exit.
Report bugs to <click@librelist.com>.
EOF
exit 0;;
*)
objs="$objs
$1"; shift 1;;
esac
done
test -z "$objs" && shortensyms_usage
objs=`echo "$objs" | sort | uniq`
if test -z "$NM"; then NM="@NM@"; fi
if test -z "$OBJCOPY"; then OBJCOPY="@OBJCOPY@"; fi
if test -z "$MD5SUM"; then MD5SUM="@MD5SUM@"; fi
for obj in $objs; do
longsyms=`$NM -g $obj | sed 's/^[^ ]*[ ]*.[ ]*//
/^.\{0,'$len'\}$/d'`
if test -z "$longsyms"; then
continue
elif test -z "$OBJCOPY"; then
echo "$obj: 'objcopy' missing, 'click-buildtool shortensyms' must leave long symbols unchanged" 1>&2
continue
elif test -z "$MD5SUM"; then
# We don't need security, so default to a weaker checksum.
if echo | sum >/dev/null; then MD5SUM=sum; else MD5SUM=cat; fi
fi
/bin/rm -f $obj.shortenmap $obj~
echo "$longsyms" | $awk 'BEGIN {
split("28HashContainer_const_iterator 3HCj \
22HashContainer_iterator 3HCi \
21HashContainer_adapter 3HCa \
13HashContainer 2HC \
26TokenBucketJiffyParameters 3TBJ \
12TokenBucketX 3TBX \
20can_live_reconfigure 10can_reconf \
16live_reconfigure 6reconf \
24HashTable_const_iterator 3HTj \
18HashTable_iterator 3HTi \
9HashTable 2HT \
16OrderedHashTable 3OHT \
12ErrorHandler 2EH \
10ArgContext 4Argx \
14NotifierSignal 4NSig \
9IPAddress 2IP \
12EtherAddress 3Eth \
10IP6Address 3IP6 \
13vector_memory 1v \
18typed_array_memory 1T \
18sized_array_memory 1S \
10char_array 1C \
6Vector 1V \
11StringAccum 2SA \
6String 1S \
7Element 2El \
6Packet 1P", pats, "[^A-Za-z0-9_]*");
}
{
orig = $0;
for (i = 1; length() > '$len' && pats[i]; i += 2)
gsub(pats[i], pats[i+1]);
if (length() > '$len') {
("echo " orig " | '"$MD5SUM"'") | getline hash
sub("[^A-Za-z_0-9.].*", "", hash)
$0 = substr($0, 1, '$len' - 12) "_H" substr(hash, 1, 10)
}
print orig, $0;
}' > $obj.shortenmap || exit 1
$OBJCOPY --redefine-syms=$obj.shortenmap $obj || { /bin/rm -f $obj.shortenmap; exit 1; }
/bin/rm -f $obj.shortenmap
done
}
if test "$1" = shortensyms; then
shift 1; shortensyms "$@"; exit 0
fi
#######################
# COMPILE-SHORTENSYMS #
#######################
compile_shortensyms_usage () {
echo "Usage: click-buildtool compile-shortensyms [BUILD COMMAND]..." 1>&2
echo "Try 'click-buildtool compile-shortensyms --help' for more information." 1>&2
exit 1
}
compile_shortensyms () {
args=
obj=
while [ x"$1" != x ]; do
case $1 in
-o)
if test $# -lt 2; then compile_shortensyms_usage; fi
obj="$2"; args="$args -o '$obj'"; shift 2;;
-h|--h|--he|--hel|--help)
cat <<'EOF' 1>&2
'Click-buildtool compile-shortensyms' runs a build command and then runs
'click-buildtool shortensyms' on the results. The BUILD COMMAND must contain
a '-o OBJECT' argument.
Usage: click-buildtool compile-shortensyms [BUILD COMMAND]
Options:
-h, --help Print this message and exit.
Report bugs to <click@librelist.com>.
EOF
exit 0;;
*)
args="$args '$1'"; shift 1;;
esac
done
eval $args
result=$?
test $result = 0 || exit $result
shortensyms $obj
}
if test "$1" = compile-shortensyms; then
shift 1; compile_shortensyms "$@"; exit 0
fi
############
# FINDELEM #
############
findelem_usage () {
echo "Usage: click-buildtool findelem [-a] [-V] [-p PREFIX] < [FILES AND DIRECTORIES]
Try 'click-buildtool findelem --help' for more information." 1>&2
exit 1
}
elementmap_provisions () {
elementmap="$1"
$grep "^<elementmap \|^<entry " <"$elementmap" | $awk '/ name="([^"]*)"/ {
sub(/.* name="/, "", $0);
sub(/".*/, "", $0);
prov[$0] = 1;
}
/ provides="([^"]*)"/ {
sub(/.* provides="/, "", $0);
sub(/".*/, "", $0);
split($0, d, / +/);
for (j in d) prov[d[j]] = 1;
}
END {
# delete references to drivers
delete prov["userlevel"]; delete prov["linuxmodule"];
delete prov["bsdmodule"]; delete prov["ns"];
for (j in prov) print j;
}'
}
expand_provisions () {
tr -s ', \n\r\f\t\v' '\n'
}
findelem () {
pfx=
all=
provisions=
filenames=
standards=
unprovisions='false 0'
checksum_data=
while [ x"$1" != x ]; do
case $1 in
-S|--s|--st|--sta|--stan|--stand|--standa|--standar|--standard|--standards)
standards=1; shift 1;;
-p|--pre|--pref|--prefi|--prefix)
if test $# -lt 2; then findelem_usage; fi
shift 1; pfx="$1/"; shift 1;;
-p*)
pfx="`echo "$1" | sed 's/^-p//'`"/; shift 1;;
--pre=*|--pref=*|--prefi=*|--prefix=*)
pfx="`echo "$1" | sed 's/^[^=]*=//'`"/; shift 1;;
-f|--filenames)
filenames=f; shift 1;;
-F|--filename-|--filename-p|--filename-pa|--filename-pai|--filename-pair|--filename-pairs)
filenames=F; shift 1;;
-V|--verb|--verbo|--verbos|--verbose)
verbose=1; shift 1;;
-a|--a|--al|--all)
all=1; shift 1;;
-r|--pro|--prov|--provi|--provid|--provide)
if test $# -lt 2; then findelem_usage; fi
provisions="`echo "$2" | expand_provisions`
$provisions"; shift 2;;
-r*)
provisions="`echo "$1" | sed 's/^-r//' | expand_provisions`
$provisions"; shift 1;;
--pro=*|--prov=*|--provi=*|--provid=*|--provide=*)
provisions="`echo "$1" | sed 's/^[^=]*=//' | expand_provisions`
$provisions"; shift 1;;
-x|--u|--un|--unp|--unpr|--unpro|--unprov|--unprovi|--unprovid|--unprovide)
if test $# -lt 2; then findelem_usage; fi
unprovisions="`echo "$2" | expand_provisions`
$unprovisions"; shift 2;;
-x*)
unprovisions="`echo "$1" | sed 's/^-x//' | expand_provisions`
$unprovisions"; shift 1;;
--u=*|--un=*|--unp=*|--unpr=*|--unpro=*|--unprov=*|--unprovi=*|--unprovid=*|--unprovide=*)
unprovisions="`echo "$1" | sed 's/^[^=]*=//' | expand_provisions`
$unprovisions"; shift 1;;
-X|--unprovide-|--unprovide-f|--unprovide-fi|--unprovide-fil|--unprovide-file)
if test $# -lt 2; then findelem_usage; fi
shift 1; if test -f "$1"; then unprovisions="`cat "$1"`
$unprovisions"; fi; shift 1;;
-X*)
f="`echo "$1" | sed 's/^-X//'`"; if test -f "$f"; then unprovisions="`cat "$f"`
$unprovisions"; fi; shift 1;;
--unprovide-=*|--unprovide-f=*|--unprovide-fi=*|--unprovide-fil=*|--unprovide-file=*)
f="`echo "$1" | sed 's/^[^=]*=//'`"; if test -f "$f"; then unprovisions="`cat "$f"`
$unprovisions"; fi; shift 1;;
-e|--e|--el|--ele|--elem|--eleme|--elemen|--element|--elementm|--elementma|--elementmap)
if test $# -lt 2; then findelem_usage; fi
shift 1; provisions="`elementmap_provisions "$1"`
$provisions"; shift 1;;
-e*)
emap="`echo "$1" | sed 's/^-e//'`"
provisions="`elementmap_provisions "$emap"`
$provisions"; shift 1;;
--e=*|--el=*|--ele=*|--elem=*|--eleme=*|--elemen=*|--element=*|--elementm=*|--elementma=*|--elementmap=*)
emap="`echo '$1' | sed 's/^[^=]*=//'`"
provisions="`elementmap_provisions "$emap"`
$provisions"; shift 1;;
-P|--pa|--pac|--pack|--packa|--packag|--package)
provisions="`elementmap_provisions "${clickbuild_clickdatadir}/elementmap.xml"`
$provisions"; shift 1;;
--c|--ch|--che|--chec|--check|--checks|--checksu|--checksum)
if test $# -lt 2; then findelem_usage; fi
checksum_data="$2"; shift 2;;
-h|--h|--he|--hel|--help)
cat <<'EOF' 1>&2
'Click-buildtool findelem' locates valid Click element source code. It starts
with a collection of source code, then eliminates files whose requirements
are not available until reaching a stable set of sources. It expects a list of
files and directories on standard input. Directories are searched for .cc/.c
source files. Only files containing EXPORT_ELEMENT() or ELEMENT_PROVIDES() are
considered. The initial list of available requirements is the list of
requirements specified with '-r', plus the list of EXPORT_ELEMENT() and
ELEMENT_PROVIDES() keywords.
Usage: click-buildtool findelem [OPTIONS] < [FILES AND DIRECTORIES]
Options:
-a, --all Include all subdirectories of 'elements' rather
than reading standard input, and pretend all
requirements are available (except for '-x').
-V, --verbose Print more information about dependency checking.
-p, --prefix PREFIX Prepend PREFIX to every file and/or directory.
-r, --provide REQ Provide requirement(s) in REQ.
-e, --elementmap EMAP Provide requirement(s) from EMAP.
-P, --package Provide requirement(s) from default elementmap.
-S, --standards Mark standard elements as available.
-x, --unprovide REQ Reject requirement(s) in REQ.
-X, --unprovide-file FILE Reject requirement(s) from FILE.
-f, --filenames Output filenames only.
-F, --filename-pairs Output "sourcefile:headerfile" pairs for elements.
--checksum FILE Write checksum data to FILE.
-h, --help Print this message and exit.
Report bugs to <click@librelist.com>.
EOF
exit 0;;
*)
findelem_usage;;
esac
done
if test -n "$verbose" -a -n "$pfx"; then
echo "Prefix: $pfx" 1>&2
fi
# add defaults to provisions
provisions="$provisions $default_provisions"
# add standards to provisions if necessary
if test "x$standards" != x; then
provisions="$provisions AddressInfo AlignmentInfo ErrorElement PortInfo ScheduleInfo Storage"
fi
# add 'multithread' provision based on driver
if echo "$provisions" | $grep userlevel >/dev/null 2>&1; then
if echo "$provisions" | $grep umultithread >/dev/null 2>&1; then
provisions="$provisions multithread"
fi
fi
if echo "$provisions" | $grep linuxmodule >/dev/null 2>&1; then
if echo "$provisions" | $grep smpclick >/dev/null 2>&1; then
provisions="$provisions multithread"
fi
fi
# expand provisions and unprovisions: require one per line
provisions=`echo "$provisions" | tr -s ' \011\015\014\013' '\012'`
unprovisions=`echo "$unprovisions" | tr -s ' \011\015\014\013' '\012'`
if test -n "$verbose" -a -n "$provisions"; then
echo 1>&2
echo "Provisions: $provisions" 1>&2
fi
if test -n "$verbose" -a -n "$unprovisions"; then
echo 1>&2
echo "Unprovisions: $unprovisions" 1>&2
fi
# expand list of files
if test -n "$all"; then
first_files=${pfx}
test -d ${pfx}elements && first_files=${pfx}elements
first_files=`cd $first_files >/dev/null && ls`
else
first_files=`cat`
fi
# eliminate unprovisions
bad_first_files=`echo "$first_files
$unprovisions" | sort | uniq -d`
first_files=`echo "$first_files
$bad_first_files" | sort | uniq -u`
# create first list of files
files=""
checksum_files=
for i in $first_files; do
ppfx="$pfx"
if test -d "${pfx}elements/$i" && echo "$i" | $grep -v '^\.' >/dev/null; then
ppfx="${pfx}elements/"
fi
if test -d "${ppfx}$i"; then
files="$files
"`find ${ppfx}$i -follow \( -name \*.cc -o -name \*.c \) -print | $grep -v '/[.,][^/]*$'`
elif test -r "${ppfx}$i"; then
files="$files
${ppfx}$i"
fi
if expr "$checksum_data" != "" '&' "${ppfx}$i" : '[^$
]*$' >/dev/null; then
checksum_files="$checksum_files ${ppfx}$i"
elif test -n "$checksum_data"; then rm -f "$checksum_data"; checksum_data=; fi
done
files=`echo "$files" | sort | uniq | $grep .`
# create checksum to help run "make elemlist" automatically
if test -n "$checksum_data"; then
rm -f "$checksum_data"
if test -z "$MD5SUM"; then MD5SUM="@MD5SUM@"; fi
if test -n "$MD5SUM"; then
checksum_command="LC_ALL=C ls -1R $checksum_files | $MD5SUM | sed 's/[^0-9a-f].*//'"
checksum=`eval "$checksum_command"`
echo "ELEMENT_CHECKSUM=$checksum" >"$checksum_data"
echo "ELEMENT_CHECKSUMCOMMAND=$checksum_command" >>"$checksum_data"
fi
fi
# die if no files
if test -z "$files"; then
echo "no files found" 1>&2
exit 1
fi
# if '$all', then accept all dependencies except the unprovisions
dep_test='<='
if test -n "$all"; then
dep_test='<'
fi
# check dependencies: generate a list of bad files, then remove those files
# from the list of good files
# first remove files that provide an unprovision
awk_exports=`echo "$unprovisions" | sed 's/\(..*\)/dep["\1"]=-1;/'`
bad_files=`$egrep '^EXPORT_ELEMENT|^ELEMENT_PROVIDES' $files | sed 's/EXPORT_ELEMENT[ ]*(\(.*\)).*/\1/
s/ELEMENT_PROVIDES[ ]*(\(.*\)).*/\1/' | $awk -F: 'BEGIN {OFS="";'"$awk_exports"'}
{
split($2, deps, / +/);
for (j in deps) {
if (dep[deps[j]] < 0) {
print $1;
break;
}
}
}' | sort | uniq`
if test -n "$verbose" -a -n "$bad_files"; then
echo 1>&2
echo "Files: $files" 1>&2
echo 1>&2
echo "Bad files: $bad_files" 1>&2
fi
if test -n "$bad_files"; then
files=`echo "$files
$bad_files" | sort | uniq -u`
fi
# then cycle, removing files that require something not provided
while true; do
provides=`$egrep '^EXPORT_ELEMENT|^ELEMENT_PROVIDES' $files | sed 's/.*(\(.*\)).*/\1/' | tr ' \011' '\012'`
awk_exports=`echo "$provides"'
'"$provisions" | sed 's/\(..*\)/dep["\1"]=1;/'`"
"`echo "$unprovisions" | sed 's/\(..*\)/dep["\1"]=-1;/'`
new_bad_files=`$grep '^ELEMENT_REQUIRES' $files | sed 's/ELEMENT_REQUIRES[ ]*(\(.*\)).*/\1/' | $awk -F: 'BEGIN {OFS="";'"$awk_exports"'dep["true"]=1; dep["1"]=1;}
{
split($2, deps, / +/);
for (j in deps) {
if (deps[j] ~ /^!/) {
i = substr(deps[j],2)
if (dep[i] > 0) {
print $1;
break;
}
} else {
i = deps[j]
if (dep[i] <= 0) {
bad = 1;
split(i, or_deps, /\|+/);
for (k in or_deps) {
if (!(dep[or_deps[k]] '"$dep_test"' 0))
bad = 0;
}
if (bad) {
print $1;
break;
}
}
}
}
}' | sort | uniq`
if test -n "$verbose"; then
echo 1>&2
echo "Files: $files" 1>&2
echo 1>&2
echo "Bad files: $new_bad_files" 1>&2
fi
if test -z "$new_bad_files"; then
break
else
files=`echo "$files
$new_bad_files" | sort | uniq -u`
bad_files="$new_bad_files
$bad_files"
fi
done
header_files=`echo "$files" | sed 's/\.cc/\.hh/'`
# generate output
if test "$filenames" = f; then
outscriptlet=i
elif test "$filenames" = F; then
outscriptlet='i, ":", header[i]'
else
echo "# Generated by 'click-buildtool findelem' on" `date`
outscriptlet='i, "\t", header[i], "\t", ex'
fi
$egrep '^(ELEMENT_|EXPORT_|class|[ ]*(virtual[ ]*)?const[ ]*char[ ]*\*[ ]*class_name|[ ]*static[ ]*void[ ]*static_[ic]|[ ]*(virtual[ ]*)?[bv]o..[ ]*run_t|[ ]*(virtual[ ]*)?int[ ]*initial_home|[}])' $files $header_files /dev/null 2>/dev/null | $awk -F: 'BEGIN {
OFS = ""; cur_class = ""; errors = 0; class_name_warned = 0; nexports = 0
}
/:class[ ]/ {
sub(/^class[ ]*/, "", $2);
sub(/[ ].*$/, "", $2);
cur_class = $2;
next
}
/:}/ {
cur_class = "";
next
}
/:EXPORT_ELEMENT/ {
sub(/.*EXPORT_ELEMENT[ ]*\([ ]*/, "", $2);
sub(/[ ]*\).*/, "", $2);
if (exports[$1] != "") {
exports[$1] = exports[$1] " " $2
} else {
exports[$1] = $2; nexports++
}
next
}
/:ELEMENT_PROVIDES/ {
sub(/.*ELEMENT_PROVIDES[ ]*\([ ]*/, "", $2);
sub(/[ ]*\).*/, "", $2);
split($2, provs, / /)
for (i in provs) {
if (provs[i] != "") {
if (exports[$1] == "")
nexports++;
else
exports[$1] = exports[$1] " ";
exports[$1] = exports[$1] "*" provs[i]
}
}
next
}
/:ELEMENT_HEADER/ {
sub(/.*ELEMENT_HEADER[ ]*\(/, "", $2)
sub(/\).*/, "", $2)
header[$1] = $2
next
}
/:ELEMENT_FEATURES/ {
sub(/.*ELEMENT_FEATURES[ ]*\(/, "", $2)
sub(/\).*/, "", $2)
features[$1] = $2
next
}
/:ELEMENT_LIBS/ {
sub(/.*ELEMENT_LIBS[ ]*\(\(?/, "", $2)
sub(/\)?\).*/, "", $2)
gsub(/[ ][ ]*/, ";", $2)
gsub(/-L;/, "-L", $2)
libs[$1] = $2
next
}
/class_name.*return[ ]*"/ {
sub(/.*return[ ]*"/, "", $0);
sub(/".*/, "", $0);
class_name[cur_class] = $0
next
}
/class_name/ {
print $1, ": ", cur_class, "::class_name method malformed" | "cat 1>&2"
if (++class_name_warned == 1)
print " (class_name methods must be written on a single line.)" | "cat 1>&2"
++errors
}
/static_initialize/ {
static_initialize[cur_class] = 1;
next
}
/static_cleanup/ {
static_cleanup[cur_class] = 1
next
}
/void[ ]*run_task/ {
print $1, ": ", cur_class, "::run_task must return bool" | "cat 1>&2"
++errors
}
/[^_a-z]run_task *\( *\)/ {
print $1, ": ", cur_class, "::run_task should take a Task * argument" | "cat 1>&2"
++errors
}
/[^_a-z]run_timer *\( *\)/ {
print $1, ": ", cur_class, "::run_timer should take a Timer * argument" | "cat 1>&2"
++errors
}
/[^_a-z]initial_home_thread_id *\([ ]*E/ {
print $1, ": ", cur_class, "::initial_home_thread_id should take ONLY a const Element * argument" | "cat 1>&2"
++errors
}
END {
if (nexports == 0)
print "click-buildtool: No elements found" | "cat 1>&2"
if (errors || nexports == 0)
system("kill -HUP '$$'")
for (i in exports) {
if (header[i] == "") {
header[i] = "\"" i "\""; sub(/\.cc/, ".hh", header[i])
}
ex = exports[i]
split(ex, exes, / /); ex = ""
for (j in exes) {
star = index(exes[j], "*")
dash = index(exes[j], "-")
if (star == 0 && dash == 0) {
dash = length(exes[j]);
if (class_name[exes[j]] == "")
exes[j] = exes[j] "-" exes[j];
else
exes[j] = exes[j] "-" class_name[exes[j]];
}
if (star == 0) {
ex = ex exes[j] " "
klass = substr(exes[j], 1, dash)
} else
klass = substr(exes[j], star + 1)
if (static_initialize[klass]) {
if (!class_name[klass]) {
print header[i], ": ", klass, "::static_initialied can only be used with a class_name method!" | "cat 1>&2"
++errors
}
ex = ex klass "-!si ";
static_initialize[klass] = 0
}
if (static_cleanup[klass]) {
ex = ex klass "-!sc ";
static_cleanup[klass] = 0
}
if (libs[i]) {
ex = ex "-!lib" libs[i] " "
}
if (features[i]) {
ex = ex "-!features" features[i] " "
}
}
print '"$outscriptlet"'
}
}' | sort
# attempt to detect reuse of a header protection #define
for x in $header_files; do
xp=`echo "$x" | tr -c -d 'a-zA-Z0-9 /_.@~=:+;,?-'`
head -n 10 $x 2>/dev/null | sed 's,^,'"$xp"':,'
done | $awk -F: 'BEGIN {
OFS = ""; errors = 0
}
/: *# *ifndef/ {
sub(/ *# *ifndef[ ]*/, "", $2);
sub(/[ \/].*/, "", $2);
if (!protector[$1]) {
protector[$1] = $2;
if (protecting[$2]) {
print $1, ": header protector #ifndef ", $2, " reused" | "cat 1>&2";
print protecting[$2], ": first use was here" | "cat 1>&2";
if (errors == 0)
print " (Every element header must use a different #ifndef symbol.)" | "cat 1>&2";
++errors;
} else
protecting[$2] = $1;
}
}
END {
if (errors)
system("kill -HUP '$$'");
}'
exit $?
}
##########################
# ELEM2MAKE/ELEM2PACKAGE #
##########################
elem2xxx_usage () {
echo_n "Usage: click-buildtool elem2$elem2 [-p PREFIX] [-V]" 1>&2
if test "$elem2" = package; then echo_n " PKGNAME" 1>&2; fi
echo " < elements.conf
Try 'click-buildtool elem2$elem2 --help' for more information." 1>&2
exit 1
}
elem2make () {
driver=""
makevar=""
date=`date`
linux=x
bsdmake=0
while [ x"$1" != x ]; do
case $1 in
-t|--d|--dr|--dri|--driv|--drive|--driver)
if test $# -lt 2; then elem2xxx_usage; fi
shift 1; driver="$1"; shift 1;;
-t*)
driver=`echo "$1" | sed 's/^-D//'`; shift 1;;
--d=*|--dr=*|--dri=*|--driv=*|--drive=*|--driver=*)
driver=`echo "$1" | sed 's/^[^=]*=//'`; shift 1;;
--t|--ta|--tar|--targ|--targe|--target)
if test $# -lt 2; then elem2xxx_usage; fi
shift 1; driver="$1"; shift 1;;
--t=*|--ta=*|--tar=*|--targ=*|--targe=*|--target=*)
driver=`echo "$1" | sed 's/^[^=]*=//'`; shift 1;;
-v|--m|--ma|--mak|--make|--make-|--make-v|--make-va|--make-var|--make-vari|--make-varia|--make-variab|--make-variabl|--make-variable)
if test $# -lt 2; then elem2xxx_usage; fi
shift 1; makevar="$1"; shift 1;;
-v*)
makevar=`echo "$1" | sed 's/^-v//'`; shift 1;;
--m=*|--ma=*|--mak=*|--make=*|--make-=*|--make-v=*|--make-va=*|--make-var=*|--make-vari=*|--make-varia=*|--make-variab=*|--make-variabl=*|--make-variable=*)
makevar=`echo "$1" | sed 's/^[^=]*=//'`; shift 1;;
-x|--e|--ex|--exc|--excl|--exclu|--exclud|--exclude)
if test $# -lt 2; then elem2xxx_usage; fi
shift 1
for i in $1; do excludes=";/^$i"' \\$'"/d$excludes"; done
shift 1;;
-x*)
this_exclude=`echo "$1" | sed 's/^-p//'`
for i in $this_exclude; do excludes=";/^$i"' \\$'"/d$excludes"; done
shift 1;;
--e=*|--ex=*|--exc=*|--excl=*|--exclu=*|--exclud=*|--exclude=*)
this_exclude=`echo "$1" | sed 's/^[^=]*=//'`
for i in $this_exclude; do excludes=";/^$i"' \\$'"/d$excludes"; done
shift 1;;
--l|--li|--lin|--linu|--linux)
linux=1; shift 1;;
--b|--bs|--bsd)
bsdmake=1; shift 1;;
--no-l|--no-li|--no-lin|--no-linu|--no-linux)
linux=0; shift 1;;
-V|--verb|--verbo|--verbos|--verbose)
verbose=1; shift 1;;
-h|--h|--he|--hel|--help)
cat <<'EOF' 1>&2
'Click-buildtool elem2make' reads an 'elements.conf' file generated by
'click-buildtool findelem' on the standard input, and writes a Makefile
fragment defining the ELEMENT_OBJS variable to the standard output.
Usage: click-buildtool elem2make [-t DRIVER] [-V] < elements.conf
Options:
-t, --driver DRIVER Set target driver to DRIVER ('userlevel',
'linuxmodule', 'bsdmodule', 'ns', or 'tool').
-v, --make-variable N Use make variable N.
--linux Generate Linux style makefile fragment.
--bsd Generate BSD make compatible Makefile.
-x, --exclude FILE Do not include FILE.
-V, --verbose Print more information.
-h, --help Print this message and exit.
Report bugs to <click@librelist.com>.
EOF
exit 0;;
*)
elem2xxx_usage;;
esac
done
L=
defmakevar="ELEMENT_OBJS"
if test -n "$driver"; then
if test "$driver" = 'user' -o "$driver" = 'userlevel'; then
L=u
elif test "$driver" = 'kernel' -o "$driver" = 'linuxmodule'; then
L=k
elif test "$driver" = 'bsdmodule'; then
L=b
elif test "$driver" = 'ns' -o "$driver" = 'nsmodule'; then
L=n
elif test "$driver" = 'tool'; then
L=t
else
echo "Unknown driver $driver" 1>&2
exit 1
fi
fi
if test "$L" = k -a "$linux" = x -a "$bsdmake" = 0; then
linux=1
fi
if test "$linux" = 1 -a "$bsdmake" = 1; then
echo "--linux and --bsd are mutually exclusive" 1>&2
exit 1
fi
if test -n "$L"; then osuffix=".$L.o"; else osuffix=".o"; fi
if test -z "$makevar"; then
makevar=$defmakevar
fi
# expand list of files
elemconf=`cat`
files=`echo "$elemconf" | $grep -v '^#' | sed 's/[ ].*//'`
# find libraries
libs=`echo "$elemconf" | sed '/-!lib/!d;s/^.*-!lib//g;s/;/ /g' | $grep .`
if test -n "$libs"; then
libs=`echo "$libs" | sed 's/^\([^ ][^ ]*\) *$/\1 \1/'`
while echo "$libs" | $grep ' [^ ].* [^ ]' >/dev/null; do
libs=`echo "$libs" | sed '/ [^ ].* [^ ]/s/^\([^ ][^ ]*\) *\([^ ][^ ]*\) /\1 \2\\
\2 /'`
done
fi
test -n "$libs" && libs=`echo "$libs" | tsort`
features=""
# massage awk script based on Linux 2.6 or not
if test "$linux" = 1; then
set_subdir_scriptlet='
if (dir != "" && substr(dir, 1, 1) == "/")
subdirs[dirid] = dir;
else
subdirs[dirid] = "$(obj)/" dir;
'
pattern_scriptlet='$(addprefix $(obj)/,$('"$makevar"'__", i, "))'
obj_scriptlet=' obj = "$(obj)/%'"$osuffix"'";'
action_scriptlet=' action["c" obj] = " $(call if_changed_dep,ccompile)";
action["C" obj] = " $(call if_changed_dep,cxxcompile)";'
else
set_subdir_scriptlet='subdirs[dirid] = dir;'
pattern_scriptlet='$('"$makevar"'__", i, ")'
obj_scriptlet=' obj = "%'"$osuffix"'";'
action_scriptlet=' action["c" obj] = " $(call ccompile,-c $< -o $@,CC)";
action["C" obj] = " $(call cxxcompile,-c $< -o $@,CXX)";
action["c%.i"] = " $(call ccompile_nodep,-E $< -o $@,CPP)";
action["C%.ii"] = " $(call cxxcompile_nodep,-E $< -o $@,CXXCPP)";
action["c%.s"] = " $(call ccompile_nodep,-S $< -o $@,CC -S)";
action["C%.s"] = " $(call cxxcompile_nodep,-S $< -o $@,CXX -S)";'
if test -n "$L"; then
action_scriptlet="$action_scriptlet"'
action["c" obj] = action["c" obj] "\n $(FIXDEP)";
action["C" obj] = action["C" obj] "\n $(FIXDEP)";'
fi
fi
# output
echo "# Generated by 'click-buildtool elem2make' on" `date`
echo "$files" | $awk '
BEGIN { OFS = "";
'"$obj_scriptlet"'
'"$action_scriptlet"'
}
{ filetype = ($0 ~ /\.c$/ ? "c" : "C");
sub(/\.cc*$/, "'"$osuffix"'");
i = match($0, /\/[^\/]*$/);
if (i == 0) {
dir = "";
file = $0;
} else {
dir = substr($0, 1, RSTART);
file = substr($0, RSTART + 1);
}
decdir = filetype dir;
if (decdir in subdirid)
dirid = subdirid[decdir];
else {
dirid = nsubdirs++;
subdirid[decdir] = dirid;
subdirtype[dirid] = filetype;
'"$set_subdir_scriptlet"'
}
elements[dirid] = elements[dirid] file " \\\n";
}
END {
for (i = 0; i < nsubdirs; i++) {
print "'"$makevar"'__", i, " = \\\n", elements[i];
allsubdirs = allsubdirs "$('"$makevar"'__" i ") \\\n";
}
print "'"$makevar"' = \\\n", allsubdirs;
for (i = 0; i < nsubdirs; i++) {
for (j in action) {
if (substr(j, 1, 1) != subdirtype[i])
continue;
suffix = (subdirtype[i] == "C" ? "%.cc" : "%.c");
x = substr(j, 2) ": " subdirs[i] suffix;
if (substr(j, 2) == obj)
print "'"$pattern_scriptlet"': ", x;
else
print "$(patsubst %'"$osuffix"',", substr(j, 2), ",'"$pattern_scriptlet"'): ", x;
print action[j];
}
print "";
}
}' | sed "$excludes"
if test -n "$libs"; then
libvar=`echo $makevar | sed 's/OBJS$/LIBS/'`
echo $libvar = $libs
fi
}
elem2xxx () {
package=""
packagestatic=""
date=`date`
standards=''
includes=''
while [ x"$1" != x ]; do
case $1 in
-S|--s|--st|--sta|--stan|--stand|--standa|--standar|--standard|--standards)
standards=1; shift 1;;
-V|--verb|--verbo|--verbos|--verbose)
verbose=1; shift 1;;
-i|--i|--in|--inc|--incl|--inclu|--includ|--include)
if test $# -lt 2; then elem2xxx_usage; fi
includes="$includes print '#include $2';"; shift 2;;
-i*)
this_include=`echo "$1" | sed 's/^-i//'`
includes="$includes print '#include $this_include';"; shift 1;;
--i=*|--in=*|--inc=*|--incl=*|--inclu=*|--includ=*|--include=*)
this_include=`echo "$1" | sed 's/^[^=]*=//'`
includes="$includes print '#include $this_include';"; shift 1;;
-h|--h|--he|--hel|--help)
if test "$elem2" = export; then
cat <<'EOF' 1>&2
'Click-buildtool elem2export' reads an 'elements.conf' file generated by
'click-buildtool findelem' on the standard input, examines those files for
exported elements, and writes a C++ source file defining the
click_export_elements() function to the standard output.
Usage: click-buildtool elem2export [-V] < elements.conf
EOF
elif test "$elem2" = package; then
cat <<'EOF' 1>&2
'Click-buildtool elem2package' reads an 'elements.conf' file generated by
'click-buildtool findelem' on the standard input, examines those files for
exported elements, and writes a C++ source file suitable for creating a
dynamically linked package with those elements to the standard output. PKGNAME
is the name of the package.
Usage: click-buildtool elem2package [-p PREFIX] [-V] PKGNAME < elements.conf
EOF
elif test "$elem2" = list; then
cat <<'EOF' 1>&2
'Click-buildtool elem2list' reads an 'elements.conf' file generated by
'click-buildtool findelem' on the standard input, examines those files for
exported elements, and writes a list of element names.
Usage: click-buildtool elem2list < elements.conf
EOF
elif test "$elem2" = exportstatic; then
cat <<'EOF' 1>&2
'Click-buildtool elem2exportstatic' reads an 'elements.conf' file generated by
'click-buildtool findelem' on the standard input, examines those files for
exported elements, and writes a C++ source file defining the
click_export_elements() function to the standard output.