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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.)
- source scripts/portability.sh
- mkdir -p "$GENDIR"
- probecc()
- {
- ${CROSS_COMPILE}${CC} $CFLAGS $LDFLAGS -xc -o /dev/null - "$@"
- }
- # Probe for a single config symbol with a "compiles or not" test.
- # Symbol name is first argument, flags second, feed C file to stdin
- probesymbol()
- {
- probecc "${@:2}" 2>/dev/null && DEFAULT=y || DEFAULT=n
- rm a.out 2>/dev/null
- echo -e "config $1\n\tbool" || exit 1
- echo -e "\tdefault $DEFAULT\n" || exit 1
- }
- probeconfig()
- {
- # Probe for container support on target
- probesymbol TOYBOX_CONTAINER << EOF
- #include <stdio.h>
- #include <sys/syscall.h>
- #include <linux/sched.h>
- int x=CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET;
- int main(int argc, char *argv[]){printf("%d", x+SYS_unshare+ SYS_setns);}
- EOF
- probesymbol TOYBOX_FIFREEZE -c << EOF
- #include <linux/fs.h>
- #ifndef FIFREEZE
- #error nope
- #endif
- EOF
- # Work around some uClibc limitations
- probesymbol TOYBOX_ICONV -c << EOF
- #include "iconv.h"
- EOF
-
- # Android and some other platforms miss utmpx
- probesymbol TOYBOX_UTMPX -c << EOF
- #include <utmpx.h>
- #ifndef BOOT_TIME
- #error nope
- #endif
- int main(int argc, char *argv[]) {
- struct utmpx *a;
- if (0 != (a = getutxent())) return 0;
- return 1;
- }
- EOF
- # Android is missing shadow.h
- probesymbol TOYBOX_SHADOW -c << EOF
- #include <shadow.h>
- int main(int argc, char *argv[]) {
- struct spwd *a = getspnam("root"); return 0;
- }
- EOF
- # Some commands are android-specific
- probesymbol TOYBOX_ON_ANDROID -c << EOF
- #ifndef __ANDROID__
- #error nope
- #endif
- EOF
- probesymbol TOYBOX_ANDROID_SCHEDPOLICY << EOF
- #include <processgroup/sched_policy.h>
- int main(int argc,char *argv[]) { get_sched_policy_name(0); }
- EOF
- # nommu support
- probesymbol TOYBOX_FORK << EOF
- #include <unistd.h>
- int main(int argc, char *argv[]) { return fork(); }
- EOF
- echo -e '\tdepends on !TOYBOX_FORCE_NOMMU'
- probesymbol TOYBOX_PRLIMIT << EOF
- #include <sys/types.h>
- #include <sys/time.h>
- #include <sys/resource.h>
- int prlimit(pid_t pid, int resource, const struct rlimit *new_limit,
- struct rlimit *old_limit);
- int main(int argc, char *argv[]) { prlimit(0, 0, 0, 0); }
- EOF
- probesymbol TOYBOX_GETRANDOM << EOF
- #include <sys/random.h>
- int main(void) { char buf[100]; getrandom(buf, 100, 0); }
- EOF
- # glibc requires #define GNU to get the wrapper for this Linux system call,
- # so just use syscall().
- probesymbol TOYBOX_COPYFILERANGE << EOF
- #include <sys/syscall.h>
- #include <unistd.h>
- int main(void) { syscall(__NR_copy_file_range, 0, 0, 1, 0, 123, 0); }
- EOF
- probesymbol TOYBOX_HASTIMERS << EOF
- #include <signal.h>
- #include <time.h>
- int main(void) {void *x=0;timer_create(CLOCK_MONOTONIC,x,x);}
- EOF
- }
- genconfig()
- {
- # Reverse sort puts posix first, examples last.
- for j in $(ls toys/*/README | sort -s -r)
- do
- DIR="$(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' $i || return 1
- echo
- done
- echo endmenu
- done
- }
- probeconfig > "$GENDIR"/Config.probed || rm "$GENDIR"/Config.probed
- genconfig > "$GENDIR"/Config.in || rm "$GENDIR"/Config.in
- # Find names of commands that can be built standalone in these C files
- toys()
- {
- grep 'TOY(.*)' "$@" | grep -v TOYFLAG_NOFORK | grep -v "0))" | \
- $SED -En 's/([^:]*):.*(OLD|NEW)TOY\( *([a-zA-Z][^,]*) *,.*/\1:\3/p'
- }
- WORKING=
- PENDING=
- toys toys/*/*.c | (
- while IFS=":" read FILE NAME
- do
- [ "$NAME" == help ] && continue
- [ "$NAME" == install ] && continue
- [ "$NAME" == sh ] && FILE="toys/*/*.c"
- echo -e "$NAME: $FILE *.[ch] lib/*.[ch]\n\tscripts/single.sh $NAME\n"
- echo -e "test_$NAME:\n\tscripts/test.sh $NAME\n"
- [ "${FILE/pending//}" != "$FILE" ] &&
- PENDING="$PENDING $NAME" ||
- WORKING="$WORKING $NAME"
- done &&
- echo -e "clean::\n\t@rm -f $WORKING $PENDING" &&
- echo -e "list:\n\t@echo $(echo $WORKING | tr ' ' '\n' | sort | xargs)" &&
- echo -e "list_pending:\n\t@echo $(echo $PENDING | tr ' ' '\n' | sort | xargs)" &&
- echo -e ".PHONY: $WORKING $PENDING" | $SED 's/ \([^ ]\)/ test_\1/g'
- ) > .singlemake
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