1#!/bin/sh
2
3# Compile individual versions of each busybox applet.
4
5if [ $# -eq 0 ]
6then
7
8# Clear out the build directory.  (Make clean should do this instead of here.)
9
10rm -rf build
11mkdir build
12
13# Make our prerequisites.
14
15make busybox.links include/bb_config.h $(pwd)/{libbb/libbb.a,archival/libunarchive/libunarchive.a,coreutils/libcoreutils/libcoreutils.a,networking/libiproute/libiproute.a}
16
17else
18# Could very well be that we want to build an individual applet but have no
19# 'build' dir yet..
20
21test -d ./build || mkdir build
22
23fi
24
25# About 3/5 of the applets build from one .c file (with the same name as the
26# corresponding applet), and all it needs to link against.  However, to build
27# them all we need more than that.
28
29# Figure out which applets need extra libraries added to their command line.
30
31function substithing()
32{
33  if [ "${1/ $3 //}" != "$1" ]
34  then
35    echo $2
36  fi
37}
38
39function extra_libraries()
40{
41  # gzip needs gunzip.c (when gunzip is enabled, anyway).
42  substithing " gzip " "archival/gunzip.c archival/uncompress.c" "$1"
43
44  # init needs init_shared.c
45  substithing " init " "init/init_shared.c" "$1"
46
47  # ifconfig needs interface.c
48  substithing " ifconfig " "networking/interface.c" "$1"
49
50  # Applets that need libunarchive.a
51  substithing " ar bunzip2 unlzma cpio dpkg gunzip rpm2cpio rpm tar uncompress unzip dpkg_deb gzip " "archival/libunarchive/libunarchive.a" "$1"
52
53  # Applets that need libcoreutils.a
54  substithing " cp mv " "coreutils/libcoreutils/libcoreutils.a" "$1"
55
56  # Applets that need libiproute.a
57  substithing " ip " "networking/libiproute/libiproute.a" "$1"
58
59  # What needs -libm?
60  substithing " awk dc " "-lm" "$1"
61
62  # What needs -lcrypt?
63  substithing " httpd vlock " "-lcrypt" "$1"
64}
65
66# Query applets.h to figure out which applets need special treatment
67
68strange_names=`sed -rn -e 's/\#.*//' -e 's/.*APPLET_NOUSAGE\(([^,]*),([^,]*),.*/\1 \2/p' -e 's/.*APPLET_ODDNAME\(([^,]*),([^,]*),.*, *([^)]*).*/\1 \2@\3/p' include/applets.h`
69
70function bonkname()
71{
72  while [ $# -gt 0 ]
73  do
74    if [ "$APPLET" == "$1" ]
75    then
76      APPFILT="${2/@*/}"
77      if [ "${APPFILT}" == "$2" ]
78      then
79        HELPNAME='"nousage\n"'   # These should be _fixed_.
80      else
81        HELPNAME="${2/*@/}"_full_usage
82      fi
83      break
84    fi
85    shift 2
86  done
87#echo APPLET=${APPLET} APPFILT=${APPFILT} HELPNAME=${HELPNAME} 2=${2}
88}
89
90# Iterate through every name in busybox.links
91
92function buildit ()
93{
94  export APPLET="$1"
95  export APPFILT=${APPLET}
96  export HELPNAME=${APPLET}_full_usage
97
98  bonkname $strange_names
99
100  j=`find archival console-tools coreutils debianutils editors findutils init loginutils miscutils modutils networking procps shell sysklogd util-linux -name "${APPFILT}.c"`
101  if [ -z "$j" ]
102  then
103    echo no file for $APPLET
104  else
105    echo "Building $APPLET"
106    gcc -Os -o build/$APPLET applets/individual.c $j \
107	`extra_libraries $APPFILT` libbb/libbb.a -Iinclude \
108	-DBUILD_INDIVIDUAL \
109	'-Drun_applet_and_exit(...)' '-Dfind_applet_by_name(...)=0' \
110	-DAPPLET_main=${APPFILT}_main -DAPPLET_full_usage=${HELPNAME}
111    if [ $? -ne 0 ];
112    then
113      echo "Failed $APPLET"
114    fi
115  fi
116}
117
118if [ $# -eq 0 ]
119then
120  for APPLET in `sed 's .*/  ' busybox.links`
121  do
122    buildit "$APPLET"
123  done
124else
125  buildit "$1"
126fi
127
128
129strip build/*
130