1#!/bin/bash 2 3# This has to be a separate file from scripts/make.sh so it can be called 4# before menuconfig. (It's called again from scripts/make.sh just to be sure.) 5 6mkdir -p generated 7 8source configure 9 10probecc() 11{ 12 ${CROSS_COMPILE}${CC} $CFLAGS -xc -o /dev/null $1 - 13} 14 15# Probe for a single config symbol with a "compiles or not" test. 16# Symbol name is first argument, flags second, feed C file to stdin 17probesymbol() 18{ 19 probecc $2 2>/dev/null && DEFAULT=y || DEFAULT=n 20 rm a.out 2>/dev/null 21 echo -e "config $1\n\tbool" || exit 1 22 echo -e "\tdefault $DEFAULT\n" || exit 1 23} 24 25probeconfig() 26{ 27 > generated/cflags 28 # llvm produces its own really stupid warnings about things that aren't wrong, 29 # and although you can turn the warning off, gcc reacts badly to command line 30 # arguments it doesn't understand. So probe. 31 [ -z "$(probecc -Wno-string-plus-int <<< \#warn warn 2>&1 | grep string-plus-int)" ] && 32 echo -Wno-string-plus-int >> generated/cflags 33 34 # Probe for container support on target 35 probesymbol TOYBOX_CONTAINER << EOF 36 #include <linux/sched.h> 37 int x=CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET; 38 39 int main(int argc, char *argv[]) { return unshare(x); } 40EOF 41 42 probesymbol TOYBOX_FIFREEZE -c << EOF 43 #include <linux/fs.h> 44 #ifndef FIFREEZE 45 #error nope 46 #endif 47EOF 48 49 # Work around some uClibc limitations 50 probesymbol TOYBOX_ICONV -c << EOF 51 #include "iconv.h" 52EOF 53 probesymbol TOYBOX_FALLOCATE << EOF 54 #include <fcntl.h> 55 56 int main(int argc, char *argv[]) { return posix_fallocate(0,0,0); } 57EOF 58 59 # Android and some other platforms miss utmpx 60 probesymbol TOYBOX_UTMPX -c << EOF 61 #include <utmpx.h> 62 #ifndef BOOT_TIME 63 #error nope 64 #endif 65 int main(int argc, char *argv[]) { 66 struct utmpx *a; 67 if (0 != (a = getutxent())) return 0; 68 return 1; 69 } 70EOF 71 72 # Android is missing shadow.h 73 probesymbol TOYBOX_SHADOW -c << EOF 74 #include <shadow.h> 75 int main(int argc, char *argv[]) { 76 struct spwd *a = getspnam("root"); return 0; 77 } 78EOF 79 80 # Some commands are android-specific 81 probesymbol TOYBOX_ON_ANDROID -c << EOF 82 #ifndef __ANDROID__ 83 #error nope 84 #endif 85EOF 86 87 # nommu support 88 probesymbol TOYBOX_FORK << EOF 89 #include <unistd.h> 90 int main(int argc, char *argv[]) { return fork(); } 91EOF 92 echo -e '\tdepends on !TOYBOX_MUSL_NOMMU_IS_BROKEN' 93} 94 95genconfig() 96{ 97 # Reverse sort puts posix first, examples last. 98 for j in $(ls toys/*/README | sort -r) 99 do 100 DIR="$(dirname "$j")" 101 102 [ $(ls "$DIR" | wc -l) -lt 2 ] && continue 103 104 echo "menu \"$(head -n 1 $j)\"" 105 echo 106 107 # extract config stanzas from each source file, in alphabetical order 108 for i in $(ls -1 $DIR/*.c) 109 do 110 # Grab the config block for Config.in 111 echo "# $i" 112 sed -n '/^\*\//q;/^config [A-Z]/,$p' $i || return 1 113 echo 114 done 115 116 echo endmenu 117 done 118} 119 120probeconfig > generated/Config.probed || rm generated/Config.probed 121genconfig > generated/Config.in || rm generated/Config.in 122 123# Find names of commands that can be built standalone in these C files 124toys() 125{ 126 grep 'TOY(.*)' "$@" | grep -v TOYFLAG_NOFORK | grep -v "0))" | \ 127 sed -rn 's/([^:]*):.*(OLD|NEW)TOY\( *([a-zA-Z][^,]*) *,.*/\1:\3/p' 128} 129 130WORKING= 131PENDING= 132toys toys/*/*.c | ( 133while IFS=":" read FILE NAME 134do 135 [ "$NAME" == help ] && continue 136 [ "$NAME" == install ] && continue 137 echo -e "$NAME: $FILE *.[ch] lib/*.[ch]\n\tscripts/single.sh $NAME\n" 138 echo -e "test_$NAME:\n\tscripts/test.sh $NAME\n" 139 [ "${FILE/pending//}" != "$FILE" ] && 140 PENDING="$PENDING $NAME" || 141 WORKING="$WORKING $NAME" 142done > .singlemake && 143echo -e "clean::\n\trm -f $WORKING $PENDING" >> .singlemake && 144echo -e "list:\n\t@echo $(echo $WORKING $PENDING | tr ' ' '\n' | sort | xargs)"\ 145 >> .singlemake && 146echo -e "list_working:\n\t@echo $(echo $WORKING | tr ' ' '\n' | sort | xargs)" \ 147 >> .singlemake && 148echo -e "list_pending:\n\t@echo $(echo $PENDING | tr ' ' '\n' | sort | xargs)" \ 149 >> .singlemake 150) 151