| #!/bin/bash |
| |
| # Grab default values for $CFLAGS and such. |
| |
| export LANG=c |
| source ./configure |
| |
| [ -z "$KCONFIG_CONFIG" ] && KCONFIG_CONFIG=".config" |
| |
| if [ -z "$KCONFIG_CONFIG" ] |
| then |
| echo "No $KCONFIG_CONFIG (see "make help" for configuration options)." |
| exit 1 |
| fi |
| |
| echo "Make generated/config.h from $KCONFIG_CONFIG." |
| |
| # This long and roundabout sed invocation is to make old versions of sed happy. |
| # New ones have '\n' so can replace one line with two without all the branches |
| # and tedious mucking about with hold space. |
| |
| sed -n \ |
| -e 's/^# CONFIG_\(.*\) is not set.*/\1/' \ |
| -e 't notset' \ |
| -e 's/^CONFIG_\(.*\)=y.*/\1/' \ |
| -e 't isset' \ |
| -e 's/^CONFIG_\([^=]*\)=\(.*\)/#define CFG_\1 \2/p' \ |
| -e 'd' \ |
| -e ':notset' \ |
| -e 'h' \ |
| -e 's/.*/#define CFG_& 0/p' \ |
| -e 'g' \ |
| -e 's/.*/#define USE_&(...)/p' \ |
| -e 'd' \ |
| -e ':isset' \ |
| -e 'h' \ |
| -e 's/.*/#define CFG_& 1/p' \ |
| -e 'g' \ |
| -e 's/.*/#define USE_&(...) __VA_ARGS__/p' \ |
| $KCONFIG_CONFIG > generated/config.h || exit 1 |
| |
| |
| echo "Extract configuration information from toys/*.c files..." |
| scripts/genconfig.sh |
| |
| echo "Generate headers from toys/*/*.c..." |
| |
| # Create a list of all the commands toybox can provide. Note that the first |
| # entry is out of order on purpose (the toybox multiplexer command must be the |
| # first element of the array). The rest must be sorted in alphabetical order |
| # for fast binary search. |
| |
| echo "generated/newtoys.h" |
| |
| echo "USE_TOYBOX(NEWTOY(toybox, NULL, TOYFLAG_STAYROOT))" > generated/newtoys.h |
| sed -n -e 's/^USE_[A-Z0-9_]*(/&/p' toys/*/*.c \ |
| | sed 's/\(.*TOY(\)\([^,]*\),\(.*\)/\2 \1\2,\3/' | sort -k 1,1 \ |
| | sed 's/[^ ]* //' >> generated/newtoys.h |
| sed -n -e 's/.*(NEWTOY(\([^,]*\), *\(\("[^"]*"[^,]*\)*\),.*/#define OPTSTR_\1\t\2/p' \ |
| generated/newtoys.h > generated/oldtoys.h |
| |
| # Extract list of command letters from processed header file |
| |
| function getflags() |
| { |
| FLX="$1" |
| shift |
| sed -n -e "s/.*TOY($FLX"',[ \t]*"\([^"]*\)"[ \t]*,.*)/\1/' \ |
| -e 't keep;d;:keep' -e 's/^[<>=][0-9]//' -e 's/[?&^]//' \ |
| -e 't keep' -e 's/[><=][0-9][0-9]*//g' -e 's/+.//g' \ |
| -e 's/\[[^]]*\]//g' -e 's/[-?^:&#|@* ;]//g' "$@" -e 'p' |
| } |
| |
| # Extract global structure definitions and flag definitions from toys/*/*.c |
| |
| function getglobals() |
| { |
| # Run newtoys.h through the compiler's preprocessor to resolve USE macros |
| # against current config. |
| NEWTOYS="$(cat generated/config.h generated/newtoys.h | $CC -E - | sed 's/" *"//g')" |
| |
| # Grab allyesconfig for comparison |
| ALLTOYS="$((sed '/USE_.*([^)]*)$/s/$/ __VA_ARGS__/' generated/config.h && cat generated/newtoys.h) | $CC -E - | sed 's/" *"//g')" |
| |
| for i in toys/*/*.c |
| do |
| NAME="$(echo $i | sed 's@.*/\(.*\)\.c@\1@')" |
| |
| echo -e "// $i\n" |
| sed -n -e '/^GLOBALS(/,/^)/b got;b;:got' \ |
| -e 's/^GLOBALS(/struct '"$NAME"'_data {/' \ |
| -e 's/^)/};/' -e 'p' $i |
| |
| LONGFLAGS="$(echo "$NEWTOYS" | getflags "$NAME" -e 's/\(\(([^)]*)\)*\).*/\1/' -e 's/(//g' -e 's/)/ /g')" |
| FLAGS="$(echo "$NEWTOYS" | getflags "$NAME" -e 's/([^)]*)//g')" |
| ZFLAGS="$(echo "$ALLTOYS" | getflags "$NAME" -e 's/([^)]*)//g' -e 's/[-'"$FLAGS"']//g')" |
| LONGFLAGLEN="$(echo "$LONGFLAGS" | wc -w)" |
| |
| echo "#ifdef FOR_${NAME}" |
| X=0 |
| # Provide values for --longopts with no corresponding short flags |
| for i in $LONGFLAGS |
| do |
| X=$(($X+1)) |
| echo -e "#define FLAG_$i\t(1<<$(($LONGFLAGLEN+${#FLAGS}-$X)))" |
| done |
| |
| # Provide values for active flags |
| X=0 |
| while [ $X -lt ${#FLAGS} ] |
| do |
| echo -ne "#define FLAG_${FLAGS:$X:1}\t" |
| X=$(($X+1)) |
| echo "(1<<$((${#FLAGS}-$X)))" |
| done |
| |
| # Provide zeroes for inactive flags |
| X=0 |
| while [ $X -lt ${#ZFLAGS} ] |
| do |
| echo "#define FLAG_${ZFLAGS:$X:1} 0" |
| X=$(($X+1)) |
| done |
| echo "#define TT this.${NAME}" |
| echo "#endif" |
| done |
| } |
| |
| echo "generated/globals.h" |
| |
| GLOBSTRUCT="$(getglobals)" |
| ( |
| echo "$GLOBSTRUCT" |
| echo |
| echo "extern union global_union {" |
| echo "$GLOBSTRUCT" | sed -n 's/struct \(.*\)_data {/ struct \1_data \1;/p' |
| echo "} this;" |
| ) > generated/globals.h |
| |
| echo "generated/help.h" |
| # Only recreate generated/help.h if python2 is installed. Does not work with 3. |
| PYTHON="$(which python2 || which python2.6 || which python2.7)" |
| if [ ! -z "$(grep 'CONFIG_TOYBOX_HELP=y' $KCONFIG_CONFIG)" ]; |
| then |
| if [ -z "$PYTHON" ]; |
| then |
| echo "Python 2.x required to rebuild generated/help.h" |
| # exit 1 |
| else |
| echo "Extract help text from Config.in." |
| "$PYTHON" scripts/config2help.py Config.in > generated/help.h || exit 1 |
| fi |
| fi |
| |
| # Extract a list of toys/*/*.c files to compile from the data in $KCONFIG_CONFIG |
| |
| # 1) Get a list of C files in toys/* and glue them together into a regex we can |
| # feed to grep that will match any one of them (whole word, not substring). |
| TOYFILES="^$(ls toys/*/*.c | sed -n 's@^.*/\(.*\)\.c$@\1@;s/-/_/g;H;${g;s/\n//;s/\n/$|^/gp}')\$" |
| |
| # 2) Grab the XXX part of all CONFIG_XXX entries, removing everything after the |
| # second underline |
| # 3) Sort the list, keeping only one of each entry. |
| # 4) Convert to lower case. |
| # 5) Remove any config symbol not recognized as a filename from step 1. |
| # 6) Add "toys/*/" prefix and ".c" suffix. |
| |
| TOYFILES=$(sed -nre 's/^CONFIG_(.*)=y/\1/p' < "$KCONFIG_CONFIG" \ |
| | sort -u | tr A-Z a-z | grep -E "$TOYFILES" | sed 's@\(.*\)@toys/\*/\1.c@') |
| |
| echo "Library probe..." |
| |
| # We trust --as-needed to remove each library if we don't use any symbols |
| # out of it, this loop is because the compiler has no way to ignore a library |
| # that doesn't exist, so we have to detect and skip nonexistent libraries |
| # for it. |
| |
| OPTLIBS="$(for i in util crypt m; do echo "int main(int argc, char *argv[]) {return 0;}" | ${CROSS_COMPILE}${CC} -xc - -o /dev/null -Wl,--as-needed -l$i > /dev/null 2>/dev/null && echo -l$i; done)" |
| |
| echo "Compile toybox..." |
| |
| do_loudly() |
| { |
| [ ! -z "$V" ] && echo "$@" |
| "$@" |
| } |
| |
| do_loudly ${CROSS_COMPILE}${CC} $CFLAGS -I . -o toybox_unstripped $OPTIMIZE \ |
| main.c lib/*.c $TOYFILES -Wl,--as-needed $OPTLIBS || exit 1 |
| do_loudly ${CROSS_COMPILE}${STRIP} toybox_unstripped -o toybox || exit 1 |
| # gcc 4.4's strip command is buggy, and doesn't set the executable bit on |
| # its output the way SUSv4 suggests it do so. |
| do_loudly chmod +x toybox || exit 1 |