#!/bin/bash

# Copyright 2005-2021  Patrick J. Volkerding, Sebeka, Minnesota, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Modified 2011 by Eric Hameleers <alien at slackware.com> for ARM port.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=binutils
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
MARCH=$( uname -m )
if [ -z "$ARCH" ]; then
  case "$MARCH" in
    i?86)    export ARCH=i586 ;;
    armv7hl) export ARCH=$MARCH ;;
    arm*)    export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *)       export ARCH=$MARCH ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

# Set to ld.gold or ld.bfd:
DEFAULT_LD=ld.bfd

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  # The config option below is currently needed to compile on x86:
  WERROR="--enable-werror=no"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  # The config option below is currently needed to compile on x86:
  WERROR="--enable-werror=no"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "armv7hl" ]; then
  SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16"
  LIBDIRSUFFIX=""
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

case "$ARCH" in
    arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
    *)    TARGET=$ARCH-slackware-linux ;;
esac

TMP=${TMP:-/tmp}
PKG=$TMP/package-binutils

rm -rf $PKG
mkdir -p $TMP $PKG

cd $TMP
rm -rf binutils-$VERSION
tar xvf $CWD/binutils-$VERSION.tar.?z || exit 1
cd binutils-$VERSION || exit 1

# Various upstream patches:
# (none currently)

# These were shipped empty and will need to be regenerated:
rm -f binutils/doc/*.1 binutils/doc/*.man gprof/gprof.1 ld/ld.1 gas/doc/as.1

# Export the demangle.h header file (I suspect this is obsolete...):
zcat $CWD/patches/binutils-export-demangle.h.patch.gz | patch -p1 --verbose || exit 1

# Don't check to see if "config.h" was included in the installed headers:
zcat $CWD/patches/binutils-no-config-h-check.patch.gz | patch -p1 --verbose || exit 1

# Set %version to something halfway meaningful:
zcat $CWD/patches/binutils-version.patch.gz | patch -p1 --verbose || exit 1
sed -i -e 's/%''{release}/slack15/g' bfd/Makefile{.am,.in}

# Use the "unsigned long long" type for pointers on hosts where long is a
# 32-bit type but pointers are a 64-bit type.  Necessary because users expect
# to be able to install both the x86 and x86_64 versions of binutils on the
# same machine, so they need identical versions of the bfd.h header file.
zcat $CWD/patches/binutils-use-long-long.patch.gz | patch -p1 --verbose || exit 1

# Work around a bug caused by binutils using an ancient libtool:
zcat $CWD/patches/binutils-libtool-lib64.patch.gz | patch -p1 --verbose || exit 1

# Various regression fixes:
zcat $CWD/patches/binutils-2.27-aarch64-ifunc.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-CVE-2019-1010204.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-bfd-close-fds.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-do-not-link-with-static-libstdc++.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-dwarf-5-dir0.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-filename-in-error-messages.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-fix-testsuite-failures.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-gold-i386-gnu-property-notes.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-gold-mismatched-section-flags.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-gold-warn-unsupported.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-missing-man-pages.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-readelf-other-sym-info.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-revert-PLT-elision.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-special-sections-in-groups.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/binutils-testsuite-fixes.patch.gz | patch -p1 --verbose || exit 1

# Thanks to Fedora:
# Dependencies are not set up to rebuild the configure files
# in the subdirectories.  So we just rebuild the ones we care
# about after applying the configure patches
pushd libiberty
autoconf
popd
pushd intl
autoconf
popd

chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \+ -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \+

# End of preparations
if echo "$*" | grep -qw -- --prep ; then
  exit 0
fi

# Build for an x86 glibc2-based Linux system:
CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --infodir=/usr/info \
  --with-docdir=/usr/doc/binutils-$VERSION \
  --disable-compressed-debug-sections \
  --enable-shared \
  --enable-multilib \
  --enable-64-bit-bfd \
  --enable-plugins \
  --enable-threads \
  --enable-targets=i386-efi-pe,${TARGET} \
  --enable-install-libiberty \
  --enable-gold=yes \
  --enable-ld=default \
  --enable-initfini-array \
  $WERROR \
  --build=$TARGET \
  || exit 1

# Use "tooldir=/usr" to avoid internal references to the /usr/${TARGET}/
# directory. While binutils won't actually use that directory after this,
# we'll still create it since some people have made local use of it.
# Note that this will place ldscripts in /usr/lib, even on $ARCH that
# use LIBDIRSUFFIX=64. According to Ian Lance Taylor, the ldscripts have
# been built into the linker for quite some time and the ones in the
# filesystem aren't actually loaded. For the most part they are now
# documentation and it doesn't matter where they reside.
make clean || exit 1
make tooldir=/usr $NUMJOBS || make tooldir=/usr || exit 1
make tooldir=/usr install DESTDIR=$PKG || exit 1

# Using tooldir=/usr also makes the /usr/${TARGET}/lib${LIBDIRSUFFIX}
# directory obsolete, and the build will no longer install it. But since
# some people might be making local use of that directory, we'll install
# it anyway:
mkdir -p $PKG/usr/${TARGET}/lib${LIBDIRSUFFIX}
# Same with /usr/${TARGET}/bin:
mkdir -p $PKG/usr/${TARGET}/bin

# Don't ship .la files:
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

# COMMENTED OUT, since a valid use case was provided for windres on Linux.
# None of these tools are very large, and unless they can be shown to be
# non-functional, there's no good reason to exclude them.
## Remove Windows specific tools / docs (if they exist):
#rm -f $PKG/usr/bin/{dlltool,nlmconv,windres,windmc}
#rm -f $PKG/usr/man/man1/{dlltool,nlmconv,windres,windmc}*

# Add a symlink since binutils's version of strings used to be called
# "strings-GNU" on Slackware, and it's possible that people have scripts
# that use that name:
( cd $PKG/usr/bin ; ln -sf strings strings-GNU )

## Copy demangle.h, since some things might be looking for it in /usr/include,
## and others in /usr/include/libiberty:
#if [ -e $PKG//usr/include/libiberty/demangle.h -a ! -e $PKG//usr/include/demangle.h ]; then
#  cp -a $PKG//usr/include/libiberty/demangle.h $PKG//usr/include/demangle.h
#fi

## OBSOLETE, since we're using tooldir=/usr. But we'll keep this cruft as a
## reference until we get the all clear on the tooldir= changes. :-)
## Move ldscripts to /usr/lib${LIBDIRSUFFIX}, and then put symlinks in place
#mv $PKG/usr/${TARGET}/lib/ldscripts $PKG/usr/lib${LIBDIRSUFFIX}
#( cd $PKG/usr/${TARGET}
#  ln -s /usr/lib${LIBDIRSUFFIX}/ldscripts lib/ldscripts
#  for FILE in ar as ld ld.bfd ld.gold nm objcopy objdump ranlib strip ; do
#    if [ -r "/usr/bin/$FILE" ]; then
#      rm -f bin/$FILE
#      ln -s /usr/bin/$FILE bin/$FILE
#    fi
#  done
#)

# If the requested default linker is present, make it the default:
# Set the link differently on the system to change the default at runtime.
if [ -r $PKG/usr/bin/$DEFAULT_LD ]; then
  ( cd $PKG/usr/bin ; rm -f ld ; ln -sf $DEFAULT_LD ld )
fi

find $PKG | xargs file | grep -e "executable" -e "shared object" \
  | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress manual pages:
find $PKG/usr/man -type f -exec gzip -9 {} \+
for i in $( find $PKG/usr/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz
  rm $i
done

# Compress info pages
rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*

mkdir -p $PKG/usr/doc/binutils-$VERSION
cp \
  $CWD/release.binutils-* \
  COPYING* ChangeLog.linux MAI* README* \
  $PKG/usr/doc/binutils-$VERSION

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/*-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

chown -R root:root $PKG/usr/doc/binutils-$VERSION

# Add slack-desc:
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/binutils-$VERSION-$ARCH-$BUILD.txz

cat << EOF

#############################
oprofile links to libbfd so
be sure to recompile that
#############################

EOF