#!/bin/bash
# GCC package build script (written by volkerdi@slackware.com)
#
# Copyright 2003, 2004  Slackware Linux, Inc., Concord, California, USA
# Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018  Patrick J. Volkerding, Sebeka, MN, 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 OpenJDK.
# Modified 2017, 2018 by Eric Hameleers <alien at slackware.com> for gcc5.

# Some notes, Fri May 16 12:31:32 PDT 2003:
#
# Why i486 and not i386?  Because the shared C++ libraries in gcc-3.2.x will
# require 486 opcodes even when a 386 target is used (so we already weren't
# compatible with the i386 for Slackware 9.0, didn't notice, and nobody
# complained :-).  gcc-3.3 fixes this issue and allows you to build a 386
# compiler, but the fix is done in a way that produces binaries that are not
# compatible with gcc-3.2.x compiled binaries.  To retain compatibility with
# Slackware 9.0, we'll have to use i486 (or better) as the compiler target
# for gcc-3.3.
#
# It's time to say goodbye to i386 support in Slackware.  I've surveyed 386
# usage online, and the most common thing I see people say when someone asks
# about running Linux on a 386 is to "run Slackware", but then they also 
# usually go on to say "be sure to get an OLD version, like 4.0, before glibc,
# because it'll be more efficient."  Now, if that's the general advice, then
# I see no reason to continue 386 support in the latest Slackware (and indeed
# it's no longer easily possible).

# Some more notes, Mon Aug  3 19:49:51 UTC 2015:
#
# Changing to -march=i586 for 32-bit x86 as several things (Mesa being one of
# them) no longer work if constrained to -march=i486.  We're not going to use
# -march=i686 since the only additional opcode is CMOV, which is actually less
# efficient on modern CPUs running in 32-bit mode than the alternate i586
# instructions.  No need to throw i586 CPUs under the bus (yet).

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

PRGNAM=gcc5
VERSION=${VERSION:-5.5.0}
MAJVER=$(echo ${VERSION} |cut -d. -f1)
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
fi

if [ "$ARCH" = "x86_64" ]; then
  if [ -f /usr/lib/libc.a ]; then
    # If we find a 32bit C library on 64bit Slackware, assume multilib:
    GCC_ARCHOPTS="--enable-multilib"
    MULTILIB="YES"
  else
    GCC_ARCHOPTS="--disable-multilib"
    MULTILIB="NO"
  fi
else
  GCC_ARCHOPTS="--with-arch=$ARCH"
  MULTILIB="NO"
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
  if [ ${MULTILIB} = "YES" ]; then
    echo "$PRGNAM-${VERSION}_multilib-$ARCH-$BUILD$TAG.$PKGTYPE"
  else
    echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  fi
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=i386
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=i386
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=i386
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=i386
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=s390
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  SLKLDFLAGS="-L/usr/lib64"
  LIBDIRSUFFIX="64"
  LIB_ARCH=amd64
elif [ "$ARCH" = "armv7hl" ]; then
  SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=armv7hl
else
  SLKCFLAGS="-O2"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
  LIB_ARCH=$ARCH
fi

# What do we want to build
LANGS=${LANGS:-'c,c++,java'}

echo "Building these compilers: $LANGS"

set -e

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

# Clear the build locations:
rm -fr $TMP/fastjar-* $TMP/gcc-$VERSION $TMP/gcc.build.lnx $TMP/gcc.build.log $TMP/package-$PRGNAM

mkdir -p $PKG/usr/doc/gcc-$VERSION

# Insert package description:
mkdir -p $PKG/install
if [ ${MULTILIB} = "YES" ]; then
  SLDESC="  The compilers support multilib."
else
  SLDESC=""
fi
cat $CWD/slack-desc | sed -e "s/@MULTILIB@/${SLDESC}/" \
  > $PKG/install/slack-desc

# Unpack the gcc sources:
cd $TMP
tar xvf $CWD/gcc-$VERSION.tar.?z || exit 1

# Patches based inside the gcc directory go here:
#( cd gcc-$VERSION/gcc
#  #cat $CWD/patches/gcc.66782.diff | patch -p0 --verbose || exit 1
#) || exit 1

# Copy ecj.jar into the TLD of the source. Needed for java compiler.
# This can be retrieved from ftp://sourceware.org/pub/java
cp $CWD/ecj-4.9.jar gcc-$VERSION/ecj.jar

# Use an antlr runtime to compile javadoc.
# The runtime can be obtained from:
#https://oss.sonatype.org/content/repositories/releases/org/antlr/antlr-runtime/
ANTLJAR=$(echo $CWD/antlr-*.jar | tail -1)

# install docs
( cd gcc-$VERSION
  # Smite the fixincludes:
  cat $CWD/patches/gcc-no_fixincludes.diff | patch -p1 --verbose --backup --suffix=.orig || exit 1

  # Add retpoline support:
  cat $CWD/patches/0001-i386-Move-struct-ix86_frame-to-machine_function.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0003-i386-More-use-reference-of-struct-ix86_frame-to-avoi.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0004-i386-Don-t-use-reference-of-struct-ix86_frame.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0005-x86-Add-mindirect-branch-doc.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0005-x86-Add-mindirect-branch.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0006-x86-Add-mfunction-return-doc.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0006-x86-Add-mfunction-return.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0007-x86-Add-mindirect-branch-register-doc.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0007-x86-Add-mindirect-branch-register.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0008-x86-Add-V-register-operand-modifier-doc.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0008-x86-Add-V-register-operand-modifier.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-.diff | patch -p2 --verbose || exit 1
  cat $CWD/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-doc.diff | patch -p2 --verbose || exit 1

  # Fix build with glibc 2.28, which no longer makes available header file <sys/ustat.h>
  cat $CWD/patches/glibc2.28-ustat.diff | patch -p0 --verbose || exit 1

  # Fix build with glibc 2.30
  cat $CWD/patches/glibc2.30-ipc_perm.diff | patch -p0 --verbose || exit 1

  # Recent linux kernels have romved the Cyclades driver
  cat $CWD/patches/kernel-5.12.diff | patch -p1 --verbose || exit 1

  # Fix perms/owners
  chown -R root:root .
  find . -perm 777 -exec chmod 755 {} \+
  find . -perm 775 -exec chmod 755 {} \+
  find . -perm 754 -exec chmod 755 {} \+
  find . -perm 664 -exec chmod 644 {} \+
  mkdir -p $PKG/usr/doc/gcc-$VERSION
  cp -a \
    COPYING* ChangeLog* INSTALL \
    LAST_UPDATED MAINTAINERS NEWS \
    README* \
  $PKG/usr/doc/gcc-$VERSION

  # We will keep part of these, but they are really big...
  if [ -r ChangeLog ]; then
    DOCSDIR=$(echo $PKG/usr/doc/gcc-$VERSION)
    cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
    touch -r ChangeLog $DOCSDIR/ChangeLog
  fi
  if [ -r NEWS ]; then
    DOCSDIR=$(echo $PKG/usr/doc/gcc-$VERSION)
    cat NEWS | head -n 1000 > $DOCSDIR/NEWS
    touch -r NEWS $DOCSDIR/NEWS
  fi

  mkdir -p $PKG/usr/doc/gcc-${VERSION}/gcc
  ( cd gcc
    cp -a \
      ABOUT* COPYING* DATESTAMP DEV-PHASE LANG* ONEWS README* SERVICE \
    $PKG/usr/doc/gcc-$VERSION/gcc
         
    mkdir -p $PKG/usr/doc/gcc-${VERSION}/gcc/java
    ( cd java
      cp -a \
        ChangeLog.tree-ssa \
      $PKG/usr/doc/gcc-${VERSION}/gcc/java
      if [ -r ChangeLog ]; then
        cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/gcc/java/ChangeLog
        touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/gcc/java/ChangeLog
      fi
    )

  ) || exit 1

  mkdir -p $PKG/usr/doc/gcc-${VERSION}/libffi
  ( cd libffi
    cp -a \
      ChangeLog.libgcj ChangeLog.v1 \
      LICENSE* README* \
    $PKG/usr/doc/gcc-${VERSION}/libffi
    if [ -r ChangeLog ]; then
      cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libffi/ChangeLog
      touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libffi/ChangeLog
    fi
  )

  mkdir -p $PKG/usr/doc/gcc-${VERSION}/libjava
  ( cd libjava
    cp -a \
      COPYING* HACKING LIBGCJ_LICENSE \
      NEWS README* THANKS \
    $PKG/usr/doc/gcc-${VERSION}/libjava
    if [ -r ChangeLog ]; then
      cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libjava/ChangeLog
      touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libjava/ChangeLog
    fi
  )

  if [ -d libmudflap ]; then
    mkdir -p $PKG/usr/doc/gcc-${VERSION}/libmudflap
    ( cd libmudflap
      if [ -r ChangeLog ]; then
        cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libmudflap/ChangeLog
        touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libmudflap/ChangeLog
      fi
    )
  fi

  mkdir -p $PKG/usr/doc/gcc-${VERSION}/libgomp
  ( cd libgomp
    if [ -r ChangeLog ]; then
      cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libgomp/ChangeLog
      touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libgomp/ChangeLog
    fi
  )
  
  mkdir -p $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3
  ( cd libstdc++-v3
    cp -a \
      README* \
      doc/html/faq.html \
    $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3
    if [ -r ChangeLog ]; then
      cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3/ChangeLog
      touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3/ChangeLog
    fi
  )
)

# Add fastjar to the gcc5 package:
( cd $TMP
  FASTJARVER=$(echo $CWD/fastjar-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)
  echo
  echo "Building fastjar-$FASTJARVER first"
  echo
  rm -rf fastjar-$FASTJARVER
  tar xvf $CWD/fastjar-$FASTJARVER.tar.?z* || exit 1
  cd fastjar-$FASTJARVER || exit 1
  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 {} \+
  for patch in $CWD/fastjar-patches/* ; do
    cat $patch | patch -p1 --verbose || exit 1
  done
  LDFLAGS="$SLKLDFLAGS" \
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  ./configure \
     --prefix=/usr \
     --libdir=/usr/lib$LIBDIRSUFFIX \
     --mandir=/usr/man \
     --infodir=/usr/info \
     --build=$TARGET
  make || exit 1
  make install DESTDIR=$PKG || exit 1
  mkdir -p $PKG/usr/doc/fastjar-$FASTJARVER
  cp -a \
    AUTHORS CHANGES COPYING* INSTALL NEWS README* TODO \
    $PKG/usr/doc/fastjar-$FASTJARVER
  # 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 $PKG/usr/doc/fastjar-$FASTJARVER)
    cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
    touch -r ChangeLog $DOCSDIR/ChangeLog
  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 and if needed symlink the man pages:
  if [ -d $PKG/usr/man ]; then
    ( cd $PKG/usr/man
      for manpagedir in $(find . -type d -name "man*") ; do
        ( cd $manpagedir
          for eachpage in $( find . -type l -maxdepth 1) ; do
            ln -s $( readlink $eachpage ).gz $eachpage.gz
            rm $eachpage
          done
          gzip -9 *.?
        )
      done
    )
  fi
  # Compress info files, if any:
  if [ -d $PKG/usr/info ]; then
    ( cd $PKG/usr/info
      rm -f dir
      gzip -9 *
    )
  fi
  echo
) || exit 1

# build gcc
( mkdir gcc.build.lnx;
  cd gcc.build.lnx;

  # I think it's incorrect to include this option (as it'll end up set
  # to i586 on x86 platforms), and we want to tune the binary structure
  # for i686, as that's where almost all of the optimization speedups
  # are to be found.
  # Correct me if my take on this is wrong.
  #  --with-cpu=$ARCH 
 
  # NOTE:  For Slackware 15.0, look into removing --with-default-libstdcxx-abi=gcc4-compatible,
  # which will then require rebuilding all C++ libraries.  That is, if there's any benefit.

  LDFLAGS="$SLKLDFLAGS" \
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  ../gcc-$VERSION/configure \
     --prefix=/usr \
     --libdir=/usr/lib$LIBDIRSUFFIX \
     --mandir=/usr/man \
     --infodir=/usr/info \
     --enable-shared \
     --enable-bootstrap \
     --enable-languages=${LANGS} \
     --enable-threads=posix \
     --enable-checking=release \
     --enable-objc-gc \
     --with-system-zlib \
     --with-python-dir=/lib$LIBDIRSUFFIX/python2.7/site-packages \
     --enable-libstdcxx-dual-abi \
     --with-default-libstdcxx-abi=gcc4-compatible \
     --disable-libunwind-exceptions \
     --enable-__cxa_atexit \
     --enable-libssp \
     --enable-lto \
     --disable-install-libiberty \
     --with-gnu-ld \
     --without-isl \
     --verbose \
     --enable-java-home \
     --with-java-home=/usr/lib$LIBDIRSUFFIX/jvm/jre \
     --with-jvm-root-dir=/usr/lib$LIBDIRSUFFIX/jvm \
     --with-jvm-jar-dir=/usr/lib$LIBDIRSUFFIX/jvm/jvm-exports \
     --with-arch-directory=$LIB_ARCH \
     --with-antlr-jar=$ANTLJAR \
     --program-suffix=-${MAJVER} \
     --enable-version-specific-runtime-libs \
     $GCC_ARCHOPTS \
     --target=${TARGET} \
     --build=${TARGET} \
     --host=${TARGET} \
     CXX='g++ -std=c++14' || exit 1
     #--enable-java-awt=gtk \
     #--disable-gtktest \

  # Start the build:

  # Include all debugging info (for now):
  make bootstrap
  make info
  make install DESTDIR=$PKG

# KLUDGE ALERT
# These *gdb.py files are causing ldconfig to complain, so they are going
# to be REMOVED for now...  at some point, they might be moved somewhere
# else, in which case things should Just Work(tm).  Keep an eye on it.
rm -f $PKG/usr/lib*/*gdb.py

# Be sure the "specs" file is installed.
if [ ! -r $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/specs ]; then
  cat stage1-gcc/specs > $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/specs
fi

if [ ${MULTILIB} = "NO" ]; then
  # Make our 64bit gcc look for 32bit gcc binaries in ./32 subdirectory:
  # (only needed if gcc was compiled with disable-multilib)
  if [ "$ARCH" = "x86_64" ]; then
    sed -i 's#;.\(:../lib !m64 m32;\)$#;32\1#' \
      $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/specs
  fi
fi

make -i install-info DESTDIR=$PKG

# Move potentially conflicting stuff to version specific subdirectory:
if [ -d $PKG/usr/lib${LIBDIRSUFFIX} ]; then
  mv $PKG/usr/lib${LIBDIRSUFFIX}/lib* $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/
fi
if [ -d $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/lib${LIBDIRSUFFIX}/ ]; then
  mv $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/lib${LIBDIRSUFFIX}/lib* $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/
fi
chmod 755 $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/libgcc_s.so.1
if [ ${MULTILIB} = "YES" ]; then
  if [ -d $PKG/usr/lib ]; then
    mv $PKG/usr/lib/lib* $PKG/usr/lib/gcc/${TARGET}/${VERSION}/
  fi
  if [ -d $PKG/usr/lib/gcc/${TARGET}/lib/ ]; then
    mv $PKG/usr/lib/gcc/${TARGET}/lib/lib* $PKG/usr/lib/gcc/${TARGET}/${VERSION}/
  fi
  chmod 755 $PKG/usr/lib/gcc/${TARGET}/${VERSION}/libgcc_s.so.1
fi

# The (huge) static GNU java libraries are not packaged.  In nearly all
# cases one or more dependencies will not be available as static anyway.
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/libgcj.a
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/libgcj-tools.a
rm -f $PKG/usr/lib/libgcj.a
rm -f $PKG/usr/lib/libgcj-tools.a

# Fix stuff up:
( cd $PKG/usr/info
  rm dir
  for eachinfo in *.info ; do
    mv $eachinfo $(basename $eachinfo .info)-${MAJVER}.info
  done
  gzip -9 *
)

( cd $PKG/usr/bin
  ln -sf g++-${MAJVER} c++-${MAJVER}
  ln -sf gcc-${MAJVER} cc-${MAJVER}
  # Improved versions of the Slackware c?9 scripts,
  # it is safe to overwrite the originals:
  cat $CWD/c89.sh > c89
  cat $CWD/c99.sh > c99
  chmod 755 c89 c99
)

( cd $PKG/usr/man
  rm -r man7  # Part of the system gcc package
  gzip -9 */*
  cd man1
  ln -sf g++-${MAJVER}.1.gz c++-${MAJVER}.1.gz
  ln -sf gcc-${MAJVER}.1.gz cc-${MAJVER}.1.gz
)  

# keep a log
) 2>&1 | tee $TMP/gcc.build.log

# Add profile scripts (non-executable by default) to make it easier
# to set the environment for compiling with gcc5:
mkdir -p $PKG/etc/profile.d
cat $CWD/profile.d/gcc5.sh > $PKG/etc/profile.d/gcc5.sh
cat $CWD/profile.d/gcc5.csh > $PKG/etc/profile.d/gcc5.csh
chmod 644  $PKG/etc/profile.d/*

# The ecj wrapper script:
cat $CWD/ecj.sh | sed -e "s,@JAVADIR@,/usr/share/java," > $PKG/usr/bin/ecj
chmod 755 $PKG/usr/bin/ecj
# Some compatibility links.
for JAVAPROG in gcj gcjh gcj-dbtool gjar gjarsigner gjavah ; do
  ln -s ${JAVAPROG}-${MAJVER} $PKG/usr/bin/${JAVAPROG}
done
( cd $PKG
  for JAVALIB in usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/libgcj* ; do
    ln -s /${JAVALIB} $PKG/usr/lib${LIBDIRSUFFIX}/
  done
)
# And add the missing javac symlink:
ln -s ../../../bin/ecj $PKG/usr/lib$LIBDIRSUFFIX/jvm/bin/javac
# Don't package libffi stuff anymore.  GCC will link the internal version
# statically, and we'll need a newer one elsewhere.
find . -name "ffi*.h" | xargs rm -f
find . -name "libffi*" | xargs rm -fR
rm -f usr/man/man3/ffi* || true
rm -f usr/info/libffi* || true
# Install a proper pkgconfig file for libgcj:
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/pkgconfig/libgcj*pc
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/32/pkgconfig/libgcj*pc || true
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig
cat $CWD/libgcj-5.pc \
  | sed -e "s,@LIBDIRSUFFIX@,${LIBDIRSUFFIX}," \
  | sed -e "s,@TARGET@,${TARGET}," \
  | sed -e "s,@VERSION@,${VERSION}," \
  > $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/libgcj-5.pc

# Filter all .la files (thanks much to Mark Post for the sed script):
( cd $PKG
  for file in $(find . -type f -name "*.la") ; do
    cat $file | sed -e 's%-L'${TMP}'[[:graph:]]* % %g' > $TMP/tmp-la-file
    cat $TMP/tmp-la-file > $file
  done
  rm $TMP/tmp-la-file
)

## Strip bloated binaries and libraries:
( cd $PKG
  find . -name "lib*so*" -exec strip --strip-unneeded "{}" \+
  find . -name "lib*a" -exec strip -g "{}" \+
  strip --strip-unneeded usr/bin/* 2> /dev/null
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
) || true

# Remove localizations overlapping with Slackware's gcc
rm -rf $PKG/usr/share/locale

( cd $PKG
  if [ ${MULTILIB} = "YES" ]; then
    /sbin/makepkg -l y -c n $OUTPUT/${PRGNAM}-${VERSION}_multilib-$ARCH-$BUILD$TAG.$PKGTYPE
  else
    /sbin/makepkg -l y -c n $OUTPUT/${PRGNAM}-${VERSION}-$ARCH-$BUILD$TAG.$PKGTYPE
  fi
)