LXR toybox/scripts/mcm-buildall.sh

   1#!/bin/bash
   2
   3# Script to build all cross and native compilers supported by musl-libc.
   4# This isn't directly used by toybox, but is useful for testing.
   5
   6trap "exit 1" INT
   7
   8if [ ! -d litecross ]
   9then
  10  echo Run this script in musl-cross-make directory to make "ccc" directory.
  11  echo
  12  echo "  "git clone https://github.com/richfelker/musl-cross-make
  13  echo "  "cd musl-cross-make
  14  echo '  ~/toybox/scripts/mcm-buildall.sh'
  15  exit 1
  16fi
  17
  18# All toolchains after the first are themselves cross compiled (so they
  19# can be statically linked against musl on the host, for binary portability.)
  20# static i686 binaries are basically "poor man's x32".
  21BOOTSTRAP=i686-linux-musl
  22
  23[ -z "$OUTPUT" ] && OUTPUT="$PWD/ccc"
  24
  25if [ "$1" == clean ]
  26then
  27  rm -rf "$OUTPUT" host-* *.log
  28  make clean
  29  exit
  30fi
  31
  32make_toolchain()
  33{
  34  # Set cross compiler path
  35  LP="$PATH"
  36  if [ -z "$TYPE" ]
  37  then
  38    OUTPUT="$PWD/host-$TARGET"
  39    EXTRASUB=y
  40  else
  41    if [ "$TYPE" == static ]
  42    then
  43      HOST=$BOOTSTRAP
  44      [ "$TARGET" = "$HOST" ] && LP="$PWD/host-$HOST/bin:$LP"
  45      TYPE=cross
  46      EXTRASUB=y
  47      LP="$OUTPUT/$HOST-cross/bin:$LP"
  48    else
  49      HOST="$TARGET"
  50      export NATIVE=y
  51      LP="$OUTPUT/${RENAME:-$TARGET}-cross/bin:$LP"
  52      [ -z "$(PATH="$LP" which $TARGET-cc)" ] &&
  53         echo "no $TARGET-cc in $LP" && return
  54    fi
  55    COMMON_CONFIG="CC=\"$HOST-gcc -static --static\" CXX=\"$HOST-g++ -static --static\""
  56    export -n HOST
  57    OUTPUT="$OUTPUT/${RENAME:-$TARGET}-$TYPE"
  58  fi
  59
  60  if [ -e "$OUTPUT.sqf" ] || [ -e "$OUTPUT/bin/$TARGET-cc" ] ||
  61     [ -e "$OUTPUT/bin/cc" ]
  62  then
  63    return
  64  fi
  65
  66  # Change title bar to say what we're currently building
  67
  68  echo === building $TARGET-$TYPE
  69  echo -en "\033]2;$TARGET-$TYPE\007"
  70
  71  rm -rf build/"$TARGET" "$OUTPUT" &&
  72  [ -z "$CPUS" ] && CPUS=$(($(nproc)+1))
  73  set -x &&
  74  PATH="$LP" make OUTPUT="$OUTPUT" TARGET="$TARGET" \
  75    GCC_CONFIG="--disable-nls --disable-libquadmath --disable-decimal-float --disable-multilib --enable-languages=c,c++ $GCC_CONFIG" \
  76    COMMON_CONFIG="CFLAGS=\"$CFLAGS -g0 -Os\" CXXFLAGS=\"$CXXFLAGS -g0 -Os\" LDFLAGS=\"$LDFLAGS -s\" $COMMON_CONFIG" \
  77    install -j$CPUS || exit 1
  78  set +x
  79  echo -e '#ifndef __MUSL__\n#define __MUSL__ 1\n#endif' \
  80    >> "$OUTPUT/${EXTRASUB:+$TARGET/}include/features.h"
  81
  82  if [ ! -z "$RENAME" ] && [ "$TYPE" == cross ]
  83  then
  84    CONTEXT="output/$RENAME-cross/bin"
  85    for i in "$CONTEXT/$TARGET-"*
  86    do
  87      X="$(echo $i | sed "s@.*/$TARGET-\([^-]*\)@\1@")"
  88      ln -sf "$TARGET-$X" "$CONTEXT/$RENAME-$X"
  89    done
  90  fi
  91
  92  # Prevent cross compiler reusing dynamically linked host build files for
  93  # $BOOTSTRAP arch
  94  [ -z "$TYPE" ] && make clean
  95
  96  if [ "$TYPE" == native ]
  97  then
  98    # gcc looks in "../usr/include" but not "/bin/../include" (relative to the
  99    # executable). That means /usr/bin/gcc looks in /usr/usr/include, so that's
 100    # not a fix either. So add a NOP symlink as a workaround for The Crazy.
 101    ln -s . "$OUTPUT/usr" || exit 1
 102    [ ! -z "$(which mksquashfs 2>/dev/null)" ] &&
 103      mksquashfs "$OUTPUT" "$OUTPUT.sqf" -all-root &&
 104      [ -z "$CLEANUP" ] && rm -rf "$OUTPUT"
 105  fi
 106}
 107
 108# Expand compressed target into binutils/gcc "tuple" and call make_toolchain
 109make_tuple()
 110{
 111  PART1=${1/:*/}
 112  PART3=${1/*:/}
 113  PART2=${1:$((${#PART1}+1)):$((${#1}-${#PART3}-${#PART1}-2))}
 114
 115  # Do we need to rename this toolchain after building it?
 116  RENAME=${PART1/*@/}
 117  [ "$RENAME" == "$PART1" ] && RENAME=
 118  PART1=${PART1/@*/}
 119  TARGET=${PART1}-linux-musl${PART2} 
 120
 121  [ -z "$NOCLEAN" ] && rm -rf build
 122
 123  for TYPE in static native
 124  do
 125    TYPE=$TYPE TARGET=$TARGET GCC_CONFIG="$PART3" RENAME="$RENAME" \
 126      make_toolchain 2>&1 | tee "$OUTPUT"/log/${RENAME:-$PART1}-${TYPE}.log
 127  done
 128}
 129
 130# Packages detect nommu via the absence of fork(). Musl provides a broken fork()
 131# on nommu builds that always returns -ENOSYS at runtime. Rip it out.
 132# (Currently only for superh/jcore.)
 133fix_nommu()
 134{
 135  # Rich won't merge this
 136  sed -i 's/--enable-fdpic$/& --enable-twoprocess/' litecross/Makefile
 137
 138  PP=patches/musl-"$(sed -n 's/MUSL_VER[ \t]*=[ \t]*//p' Makefile)"
 139  mkdir -p "$PP" &&
 140  cat > "$PP"/0001-nommu.patch << 'EOF'
 141--- a/include/features.h
 142+++ b/include/features.h
 143@@ -3,2 +3,4 @@
 144 
 145+#define __MUSL__ 1
 146+
 147 #if defined(_ALL_SOURCE) && !defined(_GNU_SOURCE)
 148--- a/src/legacy/daemon.c
 149+++ b/src/legacy/daemon.c
 150@@ -17,3 +17,3 @@
 151 
 152-       switch(fork()) {
 153+       switch(vfork()) {
 154        case 0: break;
 155@@ -25,3 +25,3 @@
 156 
 157-       switch(fork()) {
 158+       switch(vfork()) {
 159        case 0: break;
 160--- a/src/misc/forkpty.c
 161+++ b/src/misc/forkpty.c
 162@@ -8,2 +8,3 @@
 163 
 164+#ifndef __SH_FDPIC__
 165 int forkpty(int *pm, char *name, const struct termios *tio, const struct winsize *ws)
 166@@ -57,1 +58,2 @@
 167 }
 168+#endif
 169--- a/src/misc/wordexp.c
 170+++ b/src/misc/wordexp.c
 171@@ -25,2 +25,3 @@
 172 
 173+#ifndef __SH_FDPIC__
 174 static int do_wordexp(const char *s, wordexp_t *we, int flags)
 175@@ -177,2 +178,3 @@
 176 }
 177+#endif
 178 
 179--- a/src/process/fork.c
 180+++ b/src/process/fork.c
 181@@ -7,2 +7,3 @@
 182 
 183+#ifndef __SH_FDPIC__
 184 static void dummy(int x)
 185@@ -37,1 +38,2 @@
 186 }
 187+#endif
 188--- a/Makefile
 189+++ b/Makefile
 190@@ -100,3 +100,3 @@
 191        cp $< $@
 192-       sed -n -e s/__NR_/SYS_/p < $< >> $@
 193+       sed -e s/__NR_/SYS_/ < $< >> $@
 194 
 195--- a/arch/sh/bits/syscall.h.in
 196+++ b/arch/sh/bits/syscall.h.in
 197@@ -2,3 +2,5 @@
 198 #define __NR_exit                   1
 199+#ifndef __SH_FDPIC__
 200 #define __NR_fork                   2
 201+#endif
 202 #define __NR_read                   3
 203EOF
 204
 205  # I won't sign the FSF's copyright assignment
 206  tee $(for i in patches/gcc-*; do echo $i/099-vfork.patch; done) > /dev/null << 'EOF'
 207--- gcc-8.3.0/fixincludes/procopen.c    2005-08-14 19:50:43.000000000 -0500
 208+++ gcc-bak/fixincludes/procopen.c      2020-02-06 23:27:15.408071708 -0600
 209@@ -116,3 +116,3 @@
 210    */
 211-  ch_id = fork ();
 212+  ch_id = vfork ();
 213   switch (ch_id)
 214EOF
 215}
 216
 217fix_nommu || exit 1
 218mkdir -p "$OUTPUT"/log
 219
 220# Make bootstrap compiler (no $TYPE, dynamically linked against host libc)
 221# We build the rest of the cross compilers with this so they're linked against
 222# musl-libc, because glibc doesn't fully support static linking and dynamic
 223# binaries aren't really portable between distributions
 224TARGET=$BOOTSTRAP make_toolchain 2>&1 | tee -a "$OUTPUT/log/$BOOTSTRAP"-host.log
 225
 226if [ $# -gt 0 ]
 227then
 228  for i in "$@"
 229  do
 230    make_tuple "$i"
 231  done
 232else
 233  # Here's the list of cross compilers supported by this build script.
 234
 235  # First target builds a proper version of the $BOOTSTRAP compiler above,
 236  # which is used to build the rest (in alphabetical order)
 237  for i in i686:: \
 238         aarch64:eabi: armv4l:eabihf:"--with-arch=armv5t --with-float=soft" \
 239         "armv5l:eabihf:--with-arch=armv5t --with-fpu=vfpv2 --with-float=hard" \
 240         "armv7l:eabihf:--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard" \
 241         "armv7m:eabi:--with-arch=armv7-m --with-mode=thumb --disable-libatomic --enable-default-pie" \
 242         armv7r:eabihf:"--with-arch=armv7-r --enable-default-pie" \
 243         i486:: m68k:: microblaze:: mips:: mips64:: mipsel:: powerpc:: \
 244         powerpc64:: powerpc64le:: s390x:: sh2eb:fdpic:--with-cpu=mj2 \
 245         sh4::--enable-incomplete-targets x86_64::--with-mtune=nocona \
 246         x86_64@x32:x32:
 247  do
 248    make_tuple "$i"
 249  done
 250fi
 251