LXR busybox/make_single

   1#!/bin/sh
   2# This script expects that the tree was built with the desired .config:
   3# in particular, it expects that include/applets.h is generated already.
   4#
   5# The script will try to rebuild each enabled applet in isolation.
   6# All other options which chose general bbox config, applet features, etc,
   7# are not modified for the builds.
   8
   9makeopts="-j9"
  10
  11# The list of all applet config symbols
  12test -f include/applets.h || { echo "No include/applets.h file"; exit 1; }
  13apps="`
  14grep ^IF_ include/applets.h \
  15| grep -v '^IF_FEATURE_' \
  16| sed 's/IF_\([A-Z0-9._-]*\)(.*/\1/' \
  17| grep -v '^BUSYBOX$' \
  18| sort | uniq
  19`"
  20
  21# Take existing config
  22test -f .config || { echo "No .config file"; exit 1; }
  23cfg="`cat .config`"
  24
  25# Make a config with all applet symbols off
  26allno="$cfg"
  27for app in $apps; do
  28        allno="`echo "$allno" | sed "s/^CONFIG_${app}=y\$/# CONFIG_${app} is not set/"`"
  29done
  30# remove "busybox" as well
  31allno="`echo "$allno" | sed "s/^CONFIG_BUSYBOX=y\$/# CONFIG_BUSYBOX is not set/"`"
  32#echo "$allno" >.config_allno
  33
  34trap 'test -f .config.SV && mv .config.SV .config && touch .config' EXIT
  35
  36
  37# Turn on each applet individually and build single-applet executable
  38# (give config names on command line to build only those)
  39test $# = 0 && set -- $apps
  40fail=0
  41for app; do
  42        # Only if it was indeed originally enabled...
  43        { echo "$cfg" | grep -q "^CONFIG_${app}=y\$"; } || continue
  44
  45        echo "Making ${app}..."
  46        mv .config .config.SV
  47        echo "CONFIG_${app}=y" >.config
  48        echo "$allno" | sed "/^# CONFIG_${app} is not set\$/d" >>.config
  49
  50        if test x"${app}" != x"SH_IS_ASH" && test x"${app}" != x"SH_IS_HUSH"; then
  51                # $allno has all choices for "sh" aliasing set to off.
  52                # "sh" aliasing defaults to "ash", not none.
  53                # without this fix, "make oldconfig" sets it wrong,
  54                # resulting in NUM_APPLETS = 2 (the second applet is "sh")
  55                sed '/CONFIG_SH_IS_NONE/d' -i .config
  56                echo "CONFIG_SH_IS_NONE=y" >>.config
  57        fi
  58
  59        if ! yes '' | make oldconfig >busybox_make_${app}.log 2>&1; then
  60                fail=$((fail+1))
  61                echo "Config error for ${app}"
  62                mv .config busybox_config_${app}
  63        elif ! make $makeopts >>busybox_make_${app}.log 2>&1; then
  64                fail=$((fail+1))
  65                grep -i -e error: -e warning: busybox_make_${app}.log
  66                echo "Build error for ${app}"
  67                mv .config busybox_config_${app}
  68        elif ! grep -q '^#define NUM_APPLETS 1$' include/NUM_APPLETS.h; then
  69                grep -i -e error: -e warning: busybox_make_${app}.log
  70                mv busybox busybox_${app}
  71                fail=$((fail+1))
  72                echo "NUM_APPLETS != 1 for ${app}: `cat include/NUM_APPLETS.h`"
  73                mv .config busybox_config_${app}
  74        else
  75                if grep -q 'use larger COMMON_BUFSIZE' busybox_make_${app}.log; then
  76                        # FEATURE_USE_BSS_TAIL=y is selected, and build system
  77                        # recommends rebuilding. Do so, and print some
  78                        # debug info to see whether it works right:
  79                        tail -n1 busybox_make_${app}.log
  80                        nm busybox_unstripped | grep ' _end'
  81                        make >/dev/null 2>&1
  82                        nm busybox_unstripped | grep ' _end'
  83                        grep ^bb_common_bufsiz1 busybox_unstripped.map
  84                fi
  85                grep -i -e error: -e warning: busybox_make_${app}.log \
  86                || rm busybox_make_${app}.log
  87                mv busybox busybox_${app}
  88                #mv .config busybox_config_${app}
  89        fi
  90        mv .config.SV .config
  91        #exit
  92done
  93touch .config # or else next "make" can be confused
  94echo "Failures: $fail"
  95test $fail = 0 # set exitcode
  96