Mercurial > hg > toybox
view scripts/genconfig.sh @ 1178:f8432a8872e0 draft
More work on the cleanup page, partway through describing ifconfig.
author | Rob Landley <rob@landley.net> |
---|---|
date | Wed, 01 Jan 2014 15:00:44 -0600 |
parents | a612857eb52d |
children | 565980862743 |
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#!/bin/bash # This has to be a separate file from scripts/make.sh so it can be called # before menuconfig. (It's called again from scripts/make.sh just to be sure.) mkdir -p generated source configure probeconfig() { # Probe for container support on target echo -e "# container support\nconfig TOYBOX_CONTAINER\n\tbool" || return 1 ${CROSS_COMPILE}${CC} $CFLAGS -xc -o /dev/null - 2>/dev/null << EOF #include <linux/sched.h> int x=CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET; int main(int argc, char *argv[]) { return unshare(x); } EOF [ $? -eq 0 ] && DEFAULT=y || DEFAULT=n rm a.out 2>/dev/null echo -e "\tdefault $DEFAULT\n" || return 1 } genconfig() { # I could query the directory here, but I want to control the order # and capitalization in the menu for j in toys/*/README do DIR="$(dirname "$j")" [ $(ls "$DIR" | wc -l) -lt 2 ] && continue echo "menu \"$(head -n 1 $j)\"" echo # extract config stanzas from each source file, in alphabetical order for i in $(ls -1 $DIR/*.c) do # Grab the config block for Config.in echo "# $i" sed -n '/^\*\//q;/^config [A-Z]/,$p' $i || return 1 echo done echo endmenu done } headerprobes() { ${CROSS_COMPILE}${CC} $CFLAGS -xc -o /dev/null - 2>/dev/null << EOF #include <fcntl.h> #ifndef O_NOFOLLOW #error posix 2008 was a while ago now #endif EOF if [ $? -ne 0 ] then rm -f a.out ${CROSS_COMPILE}${CC} $CFLAGS -xc - 2>/dev/null << EOF #include <stdio.h> #include <sys/types.h> #include <asm/fcntl.h> int main(int argc, char *argv[]) { printf("0x%x\n", O_NOFOLLOW); } EOF X=$(./a.out) 2>/dev/null rm -f a.out echo "#define O_NOFOLLOW ${X:-0}" fi } probeconfig > generated/Config.probed || rm generated/Config.probed genconfig > generated/Config.in || rm generated/Config.in headerprobes > generated/portability.h || rm generated/portability.h