| #!/bin/bash |
| |
| # Grab default values for $CFLAGS and such. |
| |
| source ./configure |
| |
| echo "Extract configuration information from toys/*.c files..." |
| scripts/genconfig.sh |
| |
| echo "Generate headers from toys/*.c..." |
| |
| # Create a list of all the applets toybox can provide. Note that the first |
| # entry is out of order on purpose (the toybox multiplexer applet must be the |
| # first element of the array). The rest must be sorted in alphabetical order |
| # for fast binary search. |
| |
| function newtoys() |
| { |
| for i in toys/*.c |
| do |
| sed -n -e '1,/^config [A-Z]/s/^USE_/&/p' $i || exit 1 |
| done |
| } |
| echo "NEWTOY(toybox, NULL, TOYFLAG_STAYROOT)" > generated/newtoys.h |
| newtoys | sed 's/\(.*TOY(\)\([^,]*\),\(.*\)/\2 \1\2,\3/' | sort -k 1,1 \ |
| | sed 's/[^ ]* //' >> generated/newtoys.h |
| |
| # Extract global structure definitions and flag definitions from toys/*.c |
| |
| function getglobals() |
| { |
| for i in toys/*.c |
| do |
| NAME="$(echo $i | sed 's@toys/\(.*\)\.c@\1@')" |
| |
| echo -e "// $i\n" |
| sed -n -e '/^DEFINE_GLOBALS(/,/^)/b got;b;:got' \ |
| -e 's/^DEFINE_GLOBALS(/struct '"$NAME"'_data {/' \ |
| -e 's/^)/};/' -e 'p' $i |
| |
| # And get flag definitions |
| FLAGS="$(sed -n \ |
| -e "s/.*TOY($NAME"',[ \t]*"\([^"]*\)"[ \t]*,.*)/\1/' \ |
| -e 't keep;d;:keep' \ |
| -e 's/[><=][0-9][0-9]*//g' \ |
| -e 's/+.//g' \ |
| -e 's/([^)]*)//g' \ |
| -e 's/[-?^:&#|@*]//g' \ |
| -e 'p' \ |
| generated/newtoys.h)" |
| X=0 |
| while [ $X -lt ${#FLAGS} ] |
| do |
| echo -ne "#define OPTFLAG_${NAME}_${FLAGS:$X:1}\t" |
| X=$(($X+1)) |
| echo "(1<<$((${#FLAGS}-$X)))" |
| done |
| done |
| } |
| |
| GLOBSTRUCT="$(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 |
| |
| # Only recreate generated/help.h if python is installed |
| if [ ! -z "$(which python)" ] && [ ! -z "$(grep 'CONFIG_HELP=y' .config)" ] |
| then |
| echo "Extract help text from Config.in." |
| scripts/config2help.py Config.in > generated/help.h || exit 1 |
| fi |
| |
| echo "Make generated/config.h from .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' \ |
| .config > generated/config.h || exit 1 |
| |
| # Extract a list of toys/*.c files to compile from the data in ".config" with |
| # sed, sort, and tr: |
| |
| # 1) Grab the XXX part of all CONFIG_XXX entries, removing everything after the |
| # second underline |
| # 2) Sort the list, keeping only one of each entry. |
| # 3) Convert to lower case. |
| # 4) Remove toybox itself from the list (as that indicates global symbols). |
| # 5) Add "toys/" prefix and ".c" suffix. |
| |
| TOYFILES=$(cat .config | sed -nre 's/^CONFIG_(.*)=y/\1/;t skip;b;:skip;s/_.*//;p' | sort -u | tr A-Z a-z | grep -v '^toybox$' | sed 's@\(.*\)@toys/\1.c@' ) |
| |
| echo "Library probe..." |
| |
| 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 |