a8d0d13376
Toybox single binaries are now made directly with the new name instead of stomping toybox and getting renamed. Unstripped files now live in generated/unstripped. Target to run all tests is now "make tests" to avoid conflict with "make test". .singleconfig now has .PHONY: entries for all test_$NAME targets. Default install location changed to /usr/toybox, code.html now says how to change it (set $PREFIX). scripts/install.sh --uninstall works now. (And you get to keep the pieces!)
312 lines
8.8 KiB
Bash
Executable File
312 lines
8.8 KiB
Bash
Executable File
#!/bin/bash
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# Grab default values for $CFLAGS and such.
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export LANG=c
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export LC_ALL=C
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set -o pipefail
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source ./configure
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[ -z "$KCONFIG_CONFIG" ] && KCONFIG_CONFIG=.config
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[ -z "$OUTNAME" ] && OUTNAME=toybox
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UNSTRIPPED="generated/unstripped/$(basename "$OUTNAME")"
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# Since each cc invocation is short, launch half again as many processes
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# as we have processors so they don't exit faster than we can start them.
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[ -z "$CPUS" ] &&
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CPUS=$((($(echo /sys/devices/system/cpu/cpu[0-9]* | wc -w)*3)/2))
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# Respond to V= by echoing command lines as well as running them
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DOTPROG=
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do_loudly()
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{
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[ ! -z "$V" ] && echo "$@" || echo -n "$DOTPROG"
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"$@"
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}
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# Is anything under directory $2 newer than file $1
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isnewer()
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{
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[ ! -z "$(find "$2" -newer "$1" 2>/dev/null || echo yes)" ]
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}
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echo "Generate headers from toys/*/*.c..."
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mkdir -p generated/unstripped
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if isnewer generated/Config.in toys
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then
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echo "Extract configuration information from toys/*.c files..."
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scripts/genconfig.sh
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fi
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# Create a list of all the commands toybox can provide. Note that the first
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# entry is out of order on purpose (the toybox multiplexer command must be the
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# first element of the array). The rest must be sorted in alphabetical order
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# for fast binary search.
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if isnewer generated/newtoys.h toys
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then
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echo -n "generated/newtoys.h "
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echo "USE_TOYBOX(NEWTOY(toybox, NULL, TOYFLAG_STAYROOT))" > generated/newtoys.h
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sed -n -e 's/^USE_[A-Z0-9_]*(/&/p' toys/*/*.c \
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| sed 's/\(.*TOY(\)\([^,]*\),\(.*\)/\2 \1\2,\3/' | sort -s -k 1,1 \
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| sed 's/[^ ]* //' >> generated/newtoys.h || exit 1
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fi
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[ ! -z "$V" ] && echo "Which C files to build..."
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# Extract a list of toys/*/*.c files to compile from the data in $KCONFIG_CONFIG
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# (First command names, then filenames with relevant {NEW,OLD}TOY() macro.)
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GITHASH="$(git describe --tags --abbrev=12 2>/dev/null)"
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[ ! -z "$GITHASH" ] && GITHASH="-DTOYBOX_VERSION=\"$GITHASH\""
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TOYFILES="$(sed -n 's/^CONFIG_\([^=]*\)=.*/\1/p' "$KCONFIG_CONFIG" | xargs | tr ' [A-Z]' '|[a-z]')"
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TOYFILES="$(egrep -l "TOY[(]($TOYFILES)[ ,]" toys/*/*.c)"
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CFLAGS="$CFLAGS $(cat generated/cflags)"
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BUILD="$(echo ${CROSS_COMPILE}${CC} $CFLAGS -I . $OPTIMIZE $GITHASH)"
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FILES="$(echo lib/*.c main.c $TOYFILES)"
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if [ "${TOYFILES/pending//}" != "$TOYFILES" ]
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then
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echo -e "\n\033[1;31mwarning: using unfinished code from toys/pending\033[0m"
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fi
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genbuildsh()
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{
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# Write a canned build line for use on crippled build machines.
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echo "#!/bin/sh"
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echo
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echo "BUILD=\"$BUILD\""
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echo
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echo "FILES=\"$FILES\""
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echo
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echo "LINK=\"$LINK\""
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echo
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echo
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echo '$BUILD $FILES $LINK'
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}
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if ! cmp -s <(genbuildsh | head -n 3) \
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<(head -n 3 generated/build.sh 2>/dev/null)
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then
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echo -n "Library probe"
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# We trust --as-needed to remove each library if we don't use any symbols
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# out of it, this loop is because the compiler has no way to ignore a library
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# that doesn't exist, so we have to detect and skip nonexistent libraries
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# for it.
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> generated/optlibs.dat
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for i in util crypt m resolv selinux smack attr rt
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do
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echo "int main(int argc, char *argv[]) {return 0;}" | \
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${CROSS_COMPILE}${CC} $CFLAGS -xc - -o generated/libprobe -Wl,--as-needed -l$i > /dev/null 2>/dev/null &&
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echo -l$i >> generated/optlibs.dat
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echo -n .
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done
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rm -f generated/libprobe
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echo
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fi
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# LINK needs optlibs.dat, above
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LINK="$(echo $LDOPTIMIZE $LDFLAGS -o "$UNSTRIPPED" -Wl,--as-needed $(cat generated/optlibs.dat))"
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genbuildsh > generated/build.sh && chmod +x generated/build.sh || exit 1
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echo "Make generated/config.h from $KCONFIG_CONFIG."
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# This long and roundabout sed invocation is to make old versions of sed happy.
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# New ones have '\n' so can replace one line with two without all the branches
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# and tedious mucking about with hold space.
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sed -n \
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-e 's/^# CONFIG_\(.*\) is not set.*/\1/' \
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-e 't notset' \
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-e 's/^CONFIG_\(.*\)=y.*/\1/' \
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-e 't isset' \
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-e 's/^CONFIG_\([^=]*\)=\(.*\)/#define CFG_\1 \2/p' \
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-e 'd' \
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-e ':notset' \
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-e 'h' \
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-e 's/.*/#define CFG_& 0/p' \
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-e 'g' \
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-e 's/.*/#define USE_&(...)/p' \
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-e 'd' \
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-e ':isset' \
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-e 'h' \
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-e 's/.*/#define CFG_& 1/p' \
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-e 'g' \
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-e 's/.*/#define USE_&(...) __VA_ARGS__/p' \
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$KCONFIG_CONFIG > generated/config.h || exit 1
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if [ generated/mkflags -ot scripts/mkflags.c ]
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then
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do_loudly $HOSTCC scripts/mkflags.c -o generated/mkflags || exit 1
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fi
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echo -n "generated/flags.h "
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# Process config.h and newtoys.h to generate FLAG_x macros. Note we must
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# always #define the relevant macro, even when it's disabled, because we
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# allow multiple NEWTOY() in the same C file. (When disabled the FLAG is 0,
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# so flags&0 becomes a constant 0 allowing dead code elimination.)
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# Parse files through C preprocessor twice, once to get flags for current
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# .config and once to get flags for allyesconfig
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for I in A B
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do
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(
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# define macros and select header files with option string data
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echo "#define NEWTOY(aa,bb,cc) aa $I bb"
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echo '#define OLDTOY(...)'
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if [ "$I" == A ]
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then
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cat generated/config.h
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else
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sed '/USE_.*([^)]*)$/s/$/ __VA_ARGS__/' generated/config.h
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fi
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cat generated/newtoys.h
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# Run result through preprocessor, glue together " " gaps leftover from USE
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# macros, delete comment lines, print any line with a quoted optstring,
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# turn any non-quoted opstring (NULL or 0) into " " (because fscanf can't
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# handle "" with nothing in it, and mkflags uses that).
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) | ${CROSS_COMPILE}${CC} -E - | \
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sed -n -e 's/" *"//g;/^#/d;t clear;:clear;s/"/"/p;t;s/\( [AB] \).*/\1 " "/p'
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# Sort resulting line pairs and glue them together into triplets of
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# command "flags" "allflags"
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# to feed into mkflags C program that outputs actual flag macros
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# If no pair (because command's disabled in config), use " " for flags
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# so allflags can define the appropriate zero macros.
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done | sort -s | sed -n 's/ A / /;t pair;h;s/\([^ ]*\).*/\1 " "/;x;b single;:pair;h;n;:single;s/[^ ]* B //;H;g;s/\n/ /;p' | tee generated/flags.raw | \
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generated/mkflags > generated/flags.h || exit 1
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# Extract global structure definitions and flag definitions from toys/*/*.c
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function getglobals()
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{
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for i in toys/*/*.c
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do
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NAME="$(echo $i | sed 's@.*/\(.*\)\.c@\1@')"
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DATA="$(sed -n -e '/^GLOBALS(/,/^)/b got;b;:got' \
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-e 's/^GLOBALS(/struct '"$NAME"'_data {/' \
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-e 's/^)/};/' -e 'p' $i)"
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[ ! -z "$DATA" ] && echo -e "// $i\n\n$DATA\n"
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done
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}
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if isnewer generated/globals.h toys
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then
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echo -n "generated/globals.h "
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GLOBSTRUCT="$(getglobals)"
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(
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echo "$GLOBSTRUCT"
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echo
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echo "extern union global_union {"
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echo "$GLOBSTRUCT" | \
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sed -n 's/struct \(.*\)_data {/ struct \1_data \1;/p'
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echo "} this;"
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) > generated/globals.h
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fi
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if [ generated/mktags -ot scripts/mktags.c ]
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then
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do_loudly $HOSTCC scripts/mktags.c -o generated/mktags || exit 1
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fi
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if isnewer generated/tags.h toys
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then
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echo -n "generated/tags.h "
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sed -n '/TAGGED_ARRAY(/,/^)/{s/.*TAGGED_ARRAY[(]\([^,]*\),/\1/;p}' \
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toys/*/*.c lib/*.c | generated/mktags > generated/tags.h
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fi
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echo "generated/help.h"
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if [ generated/config2help -ot scripts/config2help.c ]
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then
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do_loudly $HOSTCC scripts/config2help.c -I . lib/xwrap.c lib/llist.c \
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lib/lib.c lib/portability.c -o generated/config2help || exit 1
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fi
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generated/config2help Config.in $KCONFIG_CONFIG > generated/help.h || exit 1
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[ ! -z "$NOBUILD" ] && exit 0
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echo -n "Compile toybox"
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[ ! -z "$V" ] && echo
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DOTPROG=.
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# This is a parallel version of: do_loudly $BUILD $FILES $LINK || exit 1
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X="$(ls -1t generated/obj/* 2>/dev/null | tail -n 1)"
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if [ ! -e "$X" ] || [ ! -z "$(find toys -name "*.h" -newer "$X")" ]
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then
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rm -rf generated/obj && mkdir -p generated/obj || exit 1
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else
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rm -f generated/obj/{main,lib_help}.o || exit 1
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fi
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PENDING=
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LFILES=
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DONE=0
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COUNT=0
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for i in $FILES
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do
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# build each generated/obj/*.o file in parallel
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X=${i/lib\//lib_}
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X=${X##*/}
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OUT="generated/obj/${X%%.c}.o"
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LFILES="$LFILES $OUT"
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[ "$OUT" -nt "$i" ] && continue
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do_loudly $BUILD -c $i -o $OUT &
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PENDING="$PENDING $!"
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COUNT=$(($COUNT+1))
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# ratelimit to $CPUS many parallel jobs, detecting errors
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for j in $PENDING
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do
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[ "$COUNT" -lt "$CPUS" ] && break;
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wait $j
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DONE=$(($DONE+$?))
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COUNT=$(($COUNT-1))
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PENDING="${PENDING## $j}"
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done
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[ $DONE -ne 0 ] && break
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done
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# wait for all background jobs, detecting errors
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for i in $PENDING
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do
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wait $i
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DONE=$(($DONE+$?))
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done
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[ $DONE -ne 0 ] && exit 1
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do_loudly $BUILD $LFILES $LINK || exit 1
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if [ ! -z "$NOSTRIP" ] ||
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! do_loudly ${CROSS_COMPILE}strip "$UNSTRIPPED" -o "$OUTNAME"
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then
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echo "strip failed, using unstripped" && cp "$UNSTRIPPED" "$OUTNAME" ||
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exit 1
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fi
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# gcc 4.4's strip command is buggy, and doesn't set the executable bit on
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# its output the way SUSv4 suggests it do so. While we're at it, make sure
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# we don't have the "w" bit set so things like bzip2's "cp -f" install don't
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# overwrite our binary through the symlink.
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do_loudly chmod 555 "$OUTNAME" || exit 1
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echo
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