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|
#!/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/*.h..."
# 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, 0)" > generated/newtoys.h
newtoys | sed 's/\(.*TOY(\)\([^,]*\),\(.*\)/\2 \1\2,\3/' | sort -k 1,1 \
| sed 's/[^ ]* //' >> generated/newtoys.h
# Extract global structure 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' $i
done
}
GLOBSTRUCT="$(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 '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 "Compile toybox..."
$DEBUG $CC $CFLAGS -I . -o toybox_unstripped $OPTIMIZE main.c lib/*.c \
$TOYFILES -Wl,--as-needed,-lutil,--no-as-needed || exit 1
$DEBUG $STRIP toybox_unstripped -o toybox || exit 1
|
