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251 lines
7.0 KiB
251 lines
7.0 KiB
#!/bin/bash
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# Script to build all cross and native compilers supported by musl-libc.
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# This isn't directly used by toybox, but is useful for testing.
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trap "exit 1" INT
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if [ ! -d litecross ]
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then
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echo Run this script in musl-cross-make directory to make "ccc" directory.
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echo
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echo " "git clone https://github.com/richfelker/musl-cross-make
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echo " "cd musl-cross-make
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echo ' ~/toybox/scripts/mcm-buildall.sh'
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exit 1
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fi
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# All toolchains after the first are themselves cross compiled (so they
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# can be statically linked against musl on the host, for binary portability.)
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# static i686 binaries are basically "poor man's x32".
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BOOTSTRAP=i686-linux-musl
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[ -z "$OUTPUT" ] && OUTPUT="$PWD/ccc"
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if [ "$1" == clean ]
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then
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rm -rf "$OUTPUT" host-* *.log
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make clean
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exit
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fi
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make_toolchain()
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{
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# Set cross compiler path
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LP="$PATH"
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if [ -z "$TYPE" ]
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then
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OUTPUT="$PWD/host-$TARGET"
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EXTRASUB=y
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else
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if [ "$TYPE" == static ]
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then
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HOST=$BOOTSTRAP
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[ "$TARGET" = "$HOST" ] && LP="$PWD/host-$HOST/bin:$LP"
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TYPE=cross
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EXTRASUB=y
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LP="$OUTPUT/$HOST-cross/bin:$LP"
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else
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HOST="$TARGET"
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export NATIVE=y
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LP="$OUTPUT/${RENAME:-$TARGET}-cross/bin:$LP"
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[ -z "$(PATH="$LP" which $TARGET-cc)" ] &&
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echo "no $TARGET-cc in $LP" && return
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fi
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COMMON_CONFIG="CC=\"$HOST-gcc -static --static\" CXX=\"$HOST-g++ -static --static\""
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export -n HOST
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OUTPUT="$OUTPUT/${RENAME:-$TARGET}-$TYPE"
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fi
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if [ -e "$OUTPUT.sqf" ] || [ -e "$OUTPUT/bin/$TARGET-cc" ] ||
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[ -e "$OUTPUT/bin/cc" ]
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then
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return
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fi
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# Change title bar to say what we're currently building
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echo === building $TARGET-$TYPE
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echo -en "\033]2;$TARGET-$TYPE\007"
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rm -rf build/"$TARGET" "$OUTPUT" &&
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[ -z "$CPUS" ] && CPUS=$(($(nproc)+1))
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set -x &&
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PATH="$LP" make OUTPUT="$OUTPUT" TARGET="$TARGET" \
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GCC_CONFIG="--disable-nls --disable-libquadmath --disable-decimal-float --disable-multilib --enable-languages=c,c++ $GCC_CONFIG" \
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COMMON_CONFIG="CFLAGS=\"$CFLAGS -g0 -Os\" CXXFLAGS=\"$CXXFLAGS -g0 -Os\" LDFLAGS=\"$LDFLAGS -s\" $COMMON_CONFIG" \
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install -j$CPUS || exit 1
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set +x
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echo -e '#ifndef __MUSL__\n#define __MUSL__ 1\n#endif' \
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>> "$OUTPUT/${EXTRASUB:+$TARGET/}include/features.h"
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if [ ! -z "$RENAME" ] && [ "$TYPE" == cross ]
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then
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CONTEXT="output/$RENAME-cross/bin"
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for i in "$CONTEXT/$TARGET-"*
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do
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X="$(echo $i | sed "s@.*/$TARGET-\([^-]*\)@\1@")"
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ln -sf "$TARGET-$X" "$CONTEXT/$RENAME-$X"
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done
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fi
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# Prevent cross compiler reusing dynamically linked host build files for
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# $BOOTSTRAP arch
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[ -z "$TYPE" ] && make clean
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if [ "$TYPE" == native ]
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then
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# gcc looks in "../usr/include" but not "/bin/../include" (relative to the
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# executable). That means /usr/bin/gcc looks in /usr/usr/include, so that's
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# not a fix either. So add a NOP symlink as a workaround for The Crazy.
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ln -s . "$OUTPUT/usr" || exit 1
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[ ! -z "$(which mksquashfs 2>/dev/null)" ] &&
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mksquashfs "$OUTPUT" "$OUTPUT.sqf" -all-root &&
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[ -z "$CLEANUP" ] && rm -rf "$OUTPUT"
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fi
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}
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# Expand compressed target into binutils/gcc "tuple" and call make_toolchain
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make_tuple()
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{
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PART1=${1/:*/}
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PART3=${1/*:/}
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PART2=${1:$((${#PART1}+1)):$((${#1}-${#PART3}-${#PART1}-2))}
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# Do we need to rename this toolchain after building it?
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RENAME=${PART1/*@/}
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[ "$RENAME" == "$PART1" ] && RENAME=
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PART1=${PART1/@*/}
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TARGET=${PART1}-linux-musl${PART2}
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[ -z "$NOCLEAN" ] && rm -rf build
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for TYPE in static native
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do
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TYPE=$TYPE TARGET=$TARGET GCC_CONFIG="$PART3" RENAME="$RENAME" \
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make_toolchain 2>&1 | tee "$OUTPUT"/log/${RENAME:-$PART1}-${TYPE}.log
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done
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}
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# Packages detect nommu via the absence of fork(). Musl provides a broken fork()
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# on nommu builds that always returns -ENOSYS at runtime. Rip it out.
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# (Currently only for superh/jcore.)
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fix_nommu()
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{
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# Rich won't merge this
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sed -i 's/--enable-fdpic$/& --enable-twoprocess/' litecross/Makefile
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PP=patches/musl-"$(sed -n 's/MUSL_VER[ \t]*=[ \t]*//p' Makefile)"
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mkdir -p "$PP" &&
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cat > "$PP"/0001-nommu.patch << 'EOF'
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--- a/include/features.h
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+++ b/include/features.h
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@@ -3,2 +3,4 @@
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+#define __MUSL__ 1
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+
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#if defined(_ALL_SOURCE) && !defined(_GNU_SOURCE)
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--- a/src/legacy/daemon.c
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+++ b/src/legacy/daemon.c
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@@ -17,3 +17,3 @@
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- switch(fork()) {
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+ switch(vfork()) {
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case 0: break;
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@@ -25,3 +25,3 @@
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- switch(fork()) {
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+ switch(vfork()) {
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case 0: break;
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--- a/src/misc/forkpty.c
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+++ b/src/misc/forkpty.c
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@@ -8,2 +8,3 @@
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+#ifndef __SH_FDPIC__
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int forkpty(int *pm, char *name, const struct termios *tio, const struct winsize *ws)
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@@ -57,1 +58,2 @@
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}
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+#endif
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--- a/src/misc/wordexp.c
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+++ b/src/misc/wordexp.c
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@@ -25,2 +25,3 @@
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+#ifndef __SH_FDPIC__
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static int do_wordexp(const char *s, wordexp_t *we, int flags)
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@@ -177,2 +178,3 @@
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}
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+#endif
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--- a/src/process/fork.c
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+++ b/src/process/fork.c
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@@ -7,2 +7,3 @@
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+#ifndef __SH_FDPIC__
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static void dummy(int x)
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@@ -37,1 +38,2 @@
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}
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+#endif
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--- a/Makefile
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+++ b/Makefile
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@@ -100,3 +100,3 @@
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cp $< $@
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- sed -n -e s/__NR_/SYS_/p < $< >> $@
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+ sed -e s/__NR_/SYS_/ < $< >> $@
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--- a/arch/sh/bits/syscall.h.in
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+++ b/arch/sh/bits/syscall.h.in
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@@ -2,3 +2,5 @@
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#define __NR_exit 1
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+#ifndef __SH_FDPIC__
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#define __NR_fork 2
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+#endif
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#define __NR_read 3
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EOF
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# I won't sign the FSF's copyright assignment
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tee $(for i in patches/gcc-*; do echo $i/099-vfork.patch; done) > /dev/null << 'EOF'
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--- gcc-8.3.0/fixincludes/procopen.c 2005-08-14 19:50:43.000000000 -0500
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+++ gcc-bak/fixincludes/procopen.c 2020-02-06 23:27:15.408071708 -0600
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@@ -116,3 +116,3 @@
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*/
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- ch_id = fork ();
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+ ch_id = vfork ();
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switch (ch_id)
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EOF
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}
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fix_nommu || exit 1
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mkdir -p "$OUTPUT"/log
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# Make bootstrap compiler (no $TYPE, dynamically linked against host libc)
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# We build the rest of the cross compilers with this so they're linked against
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# musl-libc, because glibc doesn't fully support static linking and dynamic
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# binaries aren't really portable between distributions
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TARGET=$BOOTSTRAP make_toolchain 2>&1 | tee -a "$OUTPUT/log/$BOOTSTRAP"-host.log
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if [ $# -gt 0 ]
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then
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for i in "$@"
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do
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make_tuple "$i"
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done
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else
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# Here's the list of cross compilers supported by this build script.
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# First target builds a proper version of the $BOOTSTRAP compiler above,
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# which is used to build the rest (in alphabetical order)
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for i in i686:: \
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aarch64:eabi: armv4l:eabihf:"--with-arch=armv5t --with-float=soft" \
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"armv5l:eabihf:--with-arch=armv5t --with-fpu=vfpv2 --with-float=hard" \
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"armv7l:eabihf:--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard" \
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"armv7m:eabi:--with-arch=armv7-m --with-mode=thumb --disable-libatomic --enable-default-pie" \
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armv7r:eabihf:"--with-arch=armv7-r --enable-default-pie" \
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i486:: m68k:: microblaze:: mips:: mips64:: mipsel:: powerpc:: \
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powerpc64:: powerpc64le:: s390x:: sh2eb:fdpic:--with-cpu=mj2 \
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sh4::--enable-incomplete-targets x86_64::--with-mtune=nocona \
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x86_64@x32:x32:
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do
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make_tuple "$i"
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done
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fi
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