make_single_applets.sh

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