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- #!/bin/bash
- # Script to build all cross and native compilers supported by musl-libc.
- # This isn't directly used by toybox, but is useful for testing.
- trap "exit 1" INT
- if [ ! -d litecross ]
- then
- echo Run this script in musl-cross-make directory to make "ccc" directory.
- echo
- echo " "git clone https://github.com/richfelker/musl-cross-make
- echo " "cd musl-cross-make
- echo ' ~/toybox/scripts/mcm-buildall.sh'
- exit 1
- fi
- # All toolchains after the first are themselves cross compiled (so they
- # can be statically linked against musl on the host, for binary portability.)
- # static i686 binaries are basically "poor man's x32".
- BOOTSTRAP=i686-linux-musl
- [ -z "$OUTPUT" ] && OUTPUT="$PWD/ccc"
- if [ "$1" == clean ]
- then
- rm -rf "$OUTPUT" host-* *.log
- make clean
- exit
- fi
- make_toolchain()
- {
- # Set cross compiler path
- LP="$PATH"
- if [ -z "$TYPE" ]
- then
- OUTPUT="$PWD/host-$TARGET"
- EXTRASUB=y
- else
- if [ "$TYPE" == static ]
- then
- HOST=$BOOTSTRAP
- [ "$TARGET" = "$HOST" ] && LP="$PWD/host-$HOST/bin:$LP"
- TYPE=cross
- EXTRASUB=y
- LP="$OUTPUT/$HOST-cross/bin:$LP"
- else
- HOST="$TARGET"
- export NATIVE=y
- LP="$OUTPUT/${RENAME:-$TARGET}-cross/bin:$LP"
- [ -z "$(PATH="$LP" which $TARGET-cc)" ] &&
- echo "no $TARGET-cc in $LP" && return
- fi
- COMMON_CONFIG="CC=\"$HOST-gcc -static --static\" CXX=\"$HOST-g++ -static --static\""
- export -n HOST
- OUTPUT="$OUTPUT/${RENAME:-$TARGET}-$TYPE"
- fi
- if [ -e "$OUTPUT.sqf" ] || [ -e "$OUTPUT/bin/$TARGET-cc" ] ||
- [ -e "$OUTPUT/bin/cc" ]
- then
- return
- fi
- # Change title bar to say what we're currently building
- echo === building $TARGET-$TYPE
- echo -en "\033]2;$TARGET-$TYPE\007"
- rm -rf build/"$TARGET" "$OUTPUT" &&
- [ -z "$CPUS" ] && CPUS=$(($(nproc)+1))
- set -x &&
- PATH="$LP" make OUTPUT="$OUTPUT" TARGET="$TARGET" \
- GCC_CONFIG="--disable-nls --disable-libquadmath --disable-decimal-float --disable-multilib --enable-languages=c,c++ $GCC_CONFIG" \
- COMMON_CONFIG="CFLAGS=\"$CFLAGS -g0 -Os\" CXXFLAGS=\"$CXXFLAGS -g0 -Os\" LDFLAGS=\"$LDFLAGS -s\" $COMMON_CONFIG" \
- install -j$CPUS || exit 1
- set +x
- echo -e '#ifndef __MUSL__\n#define __MUSL__ 1\n#endif' \
- >> "$OUTPUT/${EXTRASUB:+$TARGET/}include/features.h"
- if [ ! -z "$RENAME" ] && [ "$TYPE" == cross ]
- then
- CONTEXT="output/$RENAME-cross/bin"
- for i in "$CONTEXT/$TARGET-"*
- do
- X="$(echo $i | sed "s@.*/$TARGET-\([^-]*\)@\1@")"
- ln -sf "$TARGET-$X" "$CONTEXT/$RENAME-$X"
- done
- fi
- # Prevent cross compiler reusing dynamically linked host build files for
- # $BOOTSTRAP arch
- [ -z "$TYPE" ] && {
- [ -e musl-git-master ] && mv musl-git-master keep-this-dir
- make clean
- [ -e keep-this-dir ] && mv keep-this-dir musl-git-master
- }
- if [ "$TYPE" == native ]
- then
- # gcc looks in "../usr/include" but not "/bin/../include" (relative to the
- # executable). That means /usr/bin/gcc looks in /usr/usr/include, so that's
- # not a fix either. So add a NOP symlink as a workaround for The Crazy.
- ln -s . "$OUTPUT/usr" || exit 1
- [ ! -z "$(which mksquashfs 2>/dev/null)" ] &&
- mksquashfs "$OUTPUT" "$OUTPUT.sqf" -all-root &&
- [ -z "$CLEANUP" ] && rm -rf "$OUTPUT"
- fi
- }
- # Expand compressed target into binutils/gcc "tuple" and call make_toolchain
- make_tuple()
- {
- PART1=${1/:*/}
- PART3=${1/*:/}
- PART2=${1:$((${#PART1}+1)):$((${#1}-${#PART3}-${#PART1}-2))}
- # Do we need to rename this toolchain after building it?
- RENAME=${PART1/*@/}
- [ "$RENAME" == "$PART1" ] && RENAME=
- PART1=${PART1/@*/}
- TARGET=${PART1}-linux-musl${PART2}
- [ -z "$NOCLEAN" ] && rm -rf build
- for TYPE in static native
- do
- TYPE=$TYPE TARGET=$TARGET GCC_CONFIG="$PART3" RENAME="$RENAME" \
- make_toolchain 2>&1 | tee "$OUTPUT"/log/${RENAME:-$PART1}-${TYPE}.log
- done
- }
- # Packages detect nommu via the absence of fork(). Musl provides a broken fork()
- # on nommu builds that always returns -ENOSYS at runtime. Rip it out.
- # (Currently only for superh/jcore.)
- fix_nommu()
- {
- # Rich won't merge this
- sed -i 's/--enable-fdpic$/& --enable-twoprocess/' litecross/Makefile
- PP=patches/musl-"$(sed -n 's/MUSL_VER[ \t]*=[ \t]*//p' Makefile)"
- mkdir -p "$PP" &&
- cat > "$PP"/0001-nommu.patch << 'EOF'
- --- a/src/legacy/daemon.c
- +++ b/src/legacy/daemon.c
- @@ -17,3 +17,3 @@
-
- - switch(fork()) {
- + switch(vfork()) {
- case 0: break;
- @@ -25,3 +25,3 @@
-
- - switch(fork()) {
- + switch(vfork()) {
- case 0: break;
- --- a/src/misc/forkpty.c
- +++ b/src/misc/forkpty.c
- @@ -8,2 +8,3 @@
-
- +#ifndef __SH_FDPIC__
- int forkpty(int *pm, char *name, const struct termios *tio, const struct winsize *ws)
- @@ -57,1 +58,2 @@
- }
- +#endif
- --- a/src/misc/wordexp.c
- +++ b/src/misc/wordexp.c
- @@ -25,2 +25,3 @@
-
- +#ifndef __SH_FDPIC__
- static int do_wordexp(const char *s, wordexp_t *we, int flags)
- @@ -177,2 +178,3 @@
- }
- +#endif
-
- --- a/src/process/fork.c
- +++ b/src/process/fork.c
- @@ -7,2 +7,3 @@
-
- +#ifndef __SH_FDPIC__
- static void dummy(int x)
- @@ -37,1 +38,2 @@
- }
- +#endif
- --- a/Makefile
- +++ b/Makefile
- @@ -100,3 +100,3 @@
- cp $< $@
- - sed -n -e s/__NR_/SYS_/p < $< >> $@
- + sed -e s/__NR_/SYS_/ < $< >> $@
-
- --- a/arch/sh/bits/syscall.h.in
- +++ b/arch/sh/bits/syscall.h.in
- @@ -2,3 +2,5 @@
- #define __NR_exit 1
- +#ifndef __SH_FDPIC__
- #define __NR_fork 2
- +#endif
- #define __NR_read 3
- EOF
- # I won't sign the FSF's copyright assignment
- tee $(for i in patches/gcc-*; do echo $i/099-vfork.patch; done) > /dev/null << 'EOF'
- --- gcc-8.3.0/fixincludes/procopen.c 2005-08-14 19:50:43.000000000 -0500
- +++ gcc-bak/fixincludes/procopen.c 2020-02-06 23:27:15.408071708 -0600
- @@ -116,3 +116,3 @@
- */
- - ch_id = fork ();
- + ch_id = vfork ();
- switch (ch_id)
- EOF
- }
- fix_nommu || exit 1
- mkdir -p "$OUTPUT"/log
- # Make bootstrap compiler (no $TYPE, dynamically linked against host libc)
- # We build the rest of the cross compilers with this so they're linked against
- # musl-libc, because glibc doesn't fully support static linking and dynamic
- # binaries aren't really portable between distributions
- TARGET=$BOOTSTRAP make_toolchain 2>&1 | tee -a "$OUTPUT/log/$BOOTSTRAP"-host.log
- if [ $# -gt 0 ]
- then
- for i in "$@"
- do
- make_tuple "$i"
- done
- else
- # Here's the list of cross compilers supported by this build script.
- # First target builds a proper version of the $BOOTSTRAP compiler above,
- # which is used to build the rest (in alphabetical order)
- for i in i686:: \
- aarch64:eabi: armv4l:eabihf:"--with-arch=armv5t --with-float=soft" \
- "armv5l:eabihf:--with-arch=armv5t --with-fpu=vfpv2 --with-float=hard" \
- "armv7l:eabihf:--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard" \
- "armv7m:eabi:--with-arch=armv7-m --with-mode=thumb --disable-libatomic --enable-default-pie" \
- armv7r:eabihf:"--with-arch=armv7-r --enable-default-pie" \
- i486:: m68k:: microblaze:: mips:: mips64:: mipsel:: powerpc:: \
- powerpc64:: powerpc64le:: s390x:: sh2eb:fdpic:--with-cpu=mj2 \
- sh4::--enable-incomplete-targets x86_64::--with-mtune=nocona \
- x86_64@x32:x32:
- do
- make_tuple "$i"
- done
- fi
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