stages/1/06-gcc

   1 # Build script for gcc.
   2 #
   3 # Copyright (c) 2016-2021 Matias Fonzo, <selk@dragora.org>.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #    http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 version=10-20211217
  18
  19 # Prerequisites
  20 gmp_version=6.2.1
  21 mpfr_version=4.1.0
  22 mpc_version=1.2.1
  23 isl_version=0.24
  24
  25 cd -- "$TMPDIR"
  26
  27 rm -rf gcc-${version} gmp-${gmp_version} \
  28        mpfr-${mpfr_version} mpc-${mpc_version} isl-${isl_version}
  29 unpack "${worktree}/sources/gcc-${version}.tar.xz" \
  30        "${worktree}/sources/gmp-${gmp_version}.tar.lz" \
  31        "${worktree}/sources/mpfr-${mpfr_version}.tar.bz2" \
  32        "${worktree}/sources/mpc-${mpc_version}.tar.gz" \
  33        "${worktree}/sources/isl-${isl_version}.tar.bz2"
  34
  35 # Build instructions
  36 cd gcc-${version}
  37
  38 # Apply specific patches for the support in musl.
  39 # https://port70.net/~nsz/musl/gcc-10.3.0/
  40
  41 patch -Np1 -i "${worktree}/patches/gcc/10/0002-posix_memalign.patch"
  42 patch -Np1 -i "${worktree}/patches/gcc/10/0003-j2.patch"
  43 patch -Np1 -i "${worktree}/patches/gcc/10/0004-static-pie.patch"
  44 patch -Np1 -i "${worktree}/patches/gcc/10/0005-libstdc-futex-time64.patch"
  45 patch -Np1 -i "${worktree}/patches/gcc/10/0006-m68k-sqrt.patch"
  46
  47 # Apply extra patches to increment the security
  48 patch -Np1 -i "${worktree}/patches/gcc/10/extra-relro-in-dragora.patch"
  49 patch -Np1 -i "${worktree}/patches/gcc/10/extra-musl_libssp.patch"
  50
  51 # Apply patches from "Alpine Linux" in order to improve the security (Thanks!)
  52 patch -Np1 -i "${worktree}/patches/gcc/0004-Turn-on-D_FORTIFY_SOURCE-2-by-default-for-C-C-ObjC-O.patch"
  53 patch -Np1 -i "${worktree}/patches/gcc/0005-On-linux-targets-pass-as-needed-by-default-to-the-li.patch"
  54 patch -Np1 -i "${worktree}/patches/gcc/0006-Enable-Wformat-and-Wformat-security-by-default.patch"
  55 patch -Np1 -i "${worktree}/patches/gcc/0007-Enable-Wtrampolines-by-default.patch"
  56 patch -Np1 -i "${worktree}/patches/gcc/0008-Disable-ssp-on-nostdlib-nodefaultlibs-and-ffreestand.patch"
  57 patch -Np1 -i "${worktree}/patches/gcc/0020-add-fortify-headers-paths.patch"
  58
  59 # Hard code default ld path to look at /tools
  60
  61 find . -type f -name '*.h' -exec grep -l "/lib/ld-" {} + | while read -r file
  62 do
  63     test -f "$file" || continue;
  64     cp -f "$file" "${file}.orig"
  65
  66     sed -e 's@/lib\(64\)\{0,1\}\(32\)\{0,1\}/ld@/tools&@g' \
  67         -e 's@/usr@/tools@g' "${file}.orig" > "$file"
  68     echo '
  69 #undef STANDARD_STARTFILE_PREFIX_1
  70 #undef STANDARD_STARTFILE_PREFIX_2
  71 #define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"
  72 #define STANDARD_STARTFILE_PREFIX_2 ""' >> "$file"
  73 done
  74
  75 # Make symlinks for requisites
  76 ln -s ../gmp-${gmp_version} gmp
  77 ln -s ../mpfr-${mpfr_version} mpfr
  78 ln -s ../mpc-${mpc_version} mpc
  79 ln -s ../isl-${isl_version} isl
  80
  81 # Apply patches for MPFR
  82 (
  83     cd mpfr || exit 1
  84
  85     for file in "${worktree}"/patches/mpfr/*
  86     do
  87         if test -f "$file"
  88         then
  89             rm -f PATCHES
  90             patch -p1 < "$file"
  91         fi
  92     done
  93 )
  94
  95 # Update detection for hosts based on musl
  96
  97 cp -f "${worktree}/archive/common/config.guess" gmp/configfsf.guess
  98 cp -f "${worktree}/archive/common/config.sub" gmp/config.sub
  99
 100 cp -f "${worktree}/archive/common/config.guess" isl/config.guess
 101 cp -f "${worktree}/archive/common/config.sub" isl/config.sub
 102
 103 # Build in a separate directory
 104 rm -rf ../gcc-build
 105 mkdir ../gcc-build
 106 cd ../gcc-build
 107
 108 # Import and export toolchain variables
 109 . "${worktree}/stages/env.d/cross-staticenv"
 110
 111 ../gcc-${version}/configure \
 112 AR="$AR" AS="$AS" LD="$LD" RANLIB="$RANLIB" READELF="$READELF" STRIP="$STRIP" \
 113 CC="$BTCC" CXX="$BTCXX" \
 114 CFLAGS="$BTCFLAGS" CXXFLAGS="$BTCXXFLAGS" LDFLAGS="$BTLDFLAGS" \
 115  --prefix=/tools \
 116  --libdir=/tools/lib${libSuffix} \
 117  --build=$host \
 118  --host=$target \
 119  --target=$target \
 120  --enable-languages=c,c++ \
 121  --enable-clocale=generic \
 122  --enable-cet=auto \
 123  --enable-initfini-array \
 124  --enable-tls \
 125  --enable-libstdcxx-time \
 126  --enable-fully-dynamic-string \
 127  --enable-default-ssp \
 128  --enable-default-pie \
 129  --enable-libssp \
 130  --disable-symvers \
 131  --disable-bootstrap \
 132  --disable-libstdcxx-pch \
 133  --disable-gnu-indirect-function \
 134  --disable-libsanitizer \
 135  --disable-nls \
 136  --disable-install-libiberty \
 137  --with-linker-hash-style=gnu \
 138  --with-local-prefix=/tools \
 139  --with-native-system-header-dir=/tools/include \
 140  $multilib_options \
 141  $gcc_options
 142
 143 make -j${jobs} all \
 144  AS_FOR_TARGET="$AS" \
 145  LD_FOR_TARGET="$LD"
 146
 147 make -j${jobs} install
 148
 149 # Provide minimal libssp_nonshared.a
 150
 151 $BTCC -c "${worktree}/archive/gcc/__stack_chk_fail_local.c" \
 152       -o __stack_chk_fail_local.o
 153 $AR rc libssp_nonshared.a __stack_chk_fail_local.o
 154 $RANLIB libssp_nonshared.a
 155 cp -p libssp_nonshared.a /tools/lib${libSuffix}
 156
 157 # Unset some imported variables from file
 158 unset AR AS LD RANLIB READELF STRIP
 159
 160 cd -- "$TMPDIR"
 161
 162 cleanup()
 163 {
 164     rm -rf gcc-${version} gcc-build \
 165      gmp-${gmp_version} mpfr-${mpfr_version} \
 166      mpc-${mpc_version} isl-${isl_version}
 167 }
 168