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# Makefile for toybox.
# Copyright 2006 Rob Landley <rob@landley.net>
CFLAGS = -Wall -Wundef -Wno-char-subscripts -Os
CC = $(CROSS_COMPILE)gcc $(CFLAGS) -funsigned-char
STRIP = $(CROSS_COMPILE)strip
HOST_CC = gcc $(CFLAGS) -funsigned-char
all: toybox
.PHONY: clean
include kconfig/Makefile
.config: Config.in toys/Config.in
# The long and roundabout sed is to make old versions of sed happy. New ones
# have '\n' so can replace one line with two without all the branches and
# mucking about with hold space.
gen_config.h: .config
sed -n -e 's/^# CONFIG_\(.*\) is not set.*/\1/' \
-e 't notset' -e 'b tryisset' -e ':notset' \
-e 'h' -e 's/.*/#define CFG_& 0/p' \
-e 'g' -e 's/.*/#define USE_&(...)/p' -e 'd' -e ':tryisset' \
-e 's/^CONFIG_\(.*\)=y.*/\1/' -e 't isset' -e 'd' -e ':isset' \
-e 'h' -e 's/.*/#define CFG_& 1/p' \
-e 'g' -e 's/.*/#define USE_&(...) __VA_ARGS__/p' $< > $@
# Development targets
baseline: toybox_unstripped
@cp toybox_unstripped toybox_old
bloatcheck: toybox_old toybox_unstripped
@scripts/bloat-o-meter toybox_old toybox_unstripped
# Actual build
toyfiles = main.c toys/*.c lib/*.c
toybox_unstripped: gen_config.h $(toyfiles) toys/toylist.h lib/lib.h toys.h
$(CC) $(CFLAGS) -I . $(toyfiles) -o toybox_unstripped \
-ffunction-sections -fdata-sections -Wl,--gc-sections \
2>&1 | sed -n -e '/may be used uninitialized/{s/.*/\n/;h;b};1{x;b};: print;x;/\n/b thing;p;: thing;${x;p}' >&2
toybox: toybox_unstripped
$(STRIP) toybox_unstripped -o toybox
clean::
rm -f toybox toybox_old toybox_unstripped gen_config.h
distclean: clean
rm -f .config*
help::
@echo ' baseline - Create busybox_old for use by bloatcheck.'
@echo ' bloatcheck - Report size differences between old and current versions'
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