build.sh

   1 #!/bin/sh
   2 # Build a cross-compiler
   3 #
   4 # Copyright (C) 2012 Gregor Richards
   5 #
   6 # Permission to use, copy, modify, and/or distribute this software for any
   7 # purpose with or without fee is hereby granted, provided that the above
   8 # copyright notice and this permission notice appear in all copies.
   9 #
  10 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
  11 # REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  12 # AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
  13 # INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  14 # LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
  15 # OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  16 # PERFORMANCE OF THIS SOFTWARE.
  17
  18 if [ ! "$MUSL_CC_BASE" ]
  19 then
  20     MUSL_CC_BASE=`dirname "$0"`
  21 fi
  22
  23 # Fail on any command failing, show commands:
  24 set -ex
  25
  26 BINUTILS_CONFFLAGS=
  27 GCC_BOOTSTRAP_CONFFLAGS=
  28 MUSL_CONFFLAGS=
  29 GCC_CONFFLAGS=
  30 . "$MUSL_CC_BASE"/defs.sh
  31
  32 # Switch to the CC prefix for all of this
  33 PREFIX="$CC_PREFIX"
  34
  35 # make the sysroot usr directory
  36 if [ ! -e "$PREFIX"/"$TRIPLE"/usr ]
  37 then
  38     mkdir -p "$PREFIX"/"$TRIPLE"
  39     ln -sf . "$PREFIX"/"$TRIPLE"/usr
  40 fi
  41
  42 # binutils
  43 if [ "$BINUTILS_VERSION" = "2.17" ]
  44 then
  45     # The version of the latest GPLv2 binutils on gnu.org is a lie...
  46     fetchextract http://landley.net/aboriginal/mirror/ binutils-$BINUTILS_VERSION .tar.bz2
  47 else
  48     fetchextract http://ftp.gnu.org/gnu/binutils/ binutils-$BINUTILS_VERSION .tar.bz2
  49 fi
  50
  51 sed -i 's,MAKEINFO="$MISSING makeinfo",MAKEINFO=true,g' \
  52     binutils-$BINUTILS_VERSION/configure
  53 buildinstall 1 binutils-$BINUTILS_VERSION --target=$TRIPLE --disable-werror \
  54     --with-sysroot="$PREFIX"/"$TRIPLE" \
  55     $BINUTILS_CONFFLAGS
  56
  57 # gcc 1
  58 fetchextract http://ftp.gnu.org/gnu/gcc/gcc-$GCC_VERSION/ gcc-$GCC_VERSION .tar.bz2
  59 [ "$GCC_BUILTIN_PREREQS" = "yes" ] && gccprereqs
  60 buildinstall 1 gcc-$GCC_VERSION --target=$TRIPLE \
  61     --with-sysroot="$PREFIX"/"$TRIPLE" \
  62     --enable-languages=c --with-newlib --disable-multilib --disable-libssp \
  63     --disable-libquadmath --disable-threads --disable-decimal-float \
  64     --disable-shared --disable-libmudflap --disable-libgomp --disable-libatomic \
  65     $GCC_BOOTSTRAP_CONFFLAGS
  66
  67 # linux headers
  68 fetchextract http://www.kernel.org/pub/linux/kernel/v3.0/ linux-$LINUX_HEADERS_VERSION .tar.bz2
  69 if [ ! -e linux-$LINUX_HEADERS_VERSION/configured ]
  70 then
  71     (
  72     cd linux-$LINUX_HEADERS_VERSION
  73     make $LINUX_DEFCONFIG ARCH=$LINUX_ARCH
  74     touch configured
  75     )
  76 fi
  77 if [ ! -e linux-$LINUX_HEADERS_VERSION/installedheaders ]
  78 then
  79     (
  80     cd linux-$LINUX_HEADERS_VERSION
  81     make headers_install ARCH=$LINUX_ARCH INSTALL_HDR_PATH="$CC_PREFIX/$TRIPLE"
  82     touch installedheaders
  83     )
  84 fi
  85
  86 if [ "$MUSL_VERSION" != "no" ]
  87 then
  88     # musl in CC prefix
  89     PREFIX="$CC_PREFIX/$TRIPLE"
  90     muslfetchextract
  91     buildinstall '' musl-$MUSL_VERSION \
  92         --enable-debug CC="$TRIPLE-gcc" $MUSL_CONFFLAGS
  93     unset PREFIX
  94     PREFIX="$CC_PREFIX"
  95
  96     # if it didn't build libc.so, disable dynamic linking
  97     if [ ! -e "$CC_PREFIX/$TRIPLE/lib/libc.so" ]
  98     then
  99         GCC_CONFFLAGS="--disable-shared $GCC_CONFFLAGS"
 100     fi
 101
 102     # gcc 2
 103     buildinstall 2 gcc-$GCC_VERSION --target=$TRIPLE \
 104         --with-sysroot="$PREFIX"/"$TRIPLE" \
 105         --enable-languages=$LANGUAGES --disable-multilib --disable-libmudflap \
 106         --disable-libsanitizer \
 107         $GCC_CONFFLAGS
 108 fi
 109
 110 # un"fix" headers
 111 rm -rf "$CC_PREFIX/lib/gcc/$TRIPLE"/*/include-fixed/ "$CC_PREFIX/lib/gcc/$TRIPLE"/*/include/stddef.h
 112
 113 # make backwards-named compilers for easier cross-compiling
 114 (
 115     cd "$CC_PREFIX/bin"
 116     for tool in $TRIPLE-*
 117     do
 118         btool=`echo "$tool" | sed 's/-linux-musl/-musl-linux/'`
 119         [ "$tool" != "$btool" -a ! -e "$btool" ] && ln -s $tool $btool
 120     done
 121 )