#!/bin/sh
# build gcc for Slackware

VERSION=3.2.2
ARCH=i386
BUILD=2

CWD=`pwd`
TARGET=$ARCH-slackware-linux
TMP=/gcc
PKG=$TMP/package-gcc

# Clear the build locations:
rm -rf $PKG $TMP/gcc-$VERSION $TMP/gcc.build.lnx
mkdir -p $PKG

# These are to install the docs for easy package splitting.
# Comment these out if you plan to leave gcc as a single large package.
DF=gcc-g77/
DX=gcc-gxx/
DJ=gcc-java/
DO=gcc-objc/

cd $TMP
tar xjvf $CWD/gcc-$VERSION.tar.bz2
# install docs
( cd gcc-$VERSION
  # 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
  # Only the most recent ChangeLog... shouldn't be too big. :)
  cp -a \
    BUGS COPYING COPYING.LIB ChangeLog FAQ GNATS INSTALL MAINTAINERS README *.html \
    $PKG/usr/doc/gcc-$VERSION
  mkdir -p $PKG/usr/doc/gcc-${VERSION}/gcc
  mkdir -p $PKG/usr/doc/${DF}gcc-${VERSION}/gcc/f
  ( cd gcc
    cp -a ABOUT* COPYING* LANG* NEWS README* SERVICE \
       $PKG/usr/doc/gcc-$VERSION/gcc
    cd f
    cp -a BUGS NEWS README RELEASE-PREP \
       $PKG/usr/doc/${DF}gcc-${VERSION}/gcc/f
    cd ../objc
    mkdir -p $PKG/usr/doc/${DO}gcc-${VERSION}/gcc/objc
    cp -a README $PKG/usr/doc/${DO}gcc-${VERSION}/gcc/objc
  )
  mkdir -p $PKG/usr/doc/${DJ}gcc-${VERSION}/fastjar
  ( cd fastjar
    cp -a \
      AUTHORS CHANGES COPYING ChangeLog NEWS README \
      $PKG/usr/doc/${DJ}gcc-${VERSION}/fastjar
  )
  mkdir -p $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c
  mkdir -p $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c/libF77
  mkdir -p $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c/libI77
  mkdir -p $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c/libU77
  ( cd libf2c
    cp -a \
      README TODO disclaimer.netlib permission.netlib readme.netlib \
      $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c
      ( cd libF77
        cp -a Notice README.netlib \
          $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c/libF77
      )
      ( cd libI77
        cp -a Notice README.netlib \
          $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c/libI77
      )
      ( cd libU77
        cp -a COPYING.LIB PROJECTS README \
          $PKG/usr/doc/${DF}gcc-${VERSION}/libf2c/libU77
      )
  )
  mkdir -p $PKG/usr/doc/${DJ}gcc-${VERSION}/libjava
  ( cd libjava
    cp -a \
      COPYING ChangeLog HACKING LIBGCJ_LICENSE NEWS README THANKS \
      $PKG/usr/doc/${DJ}gcc-${VERSION}/libjava
  )
  mkdir -p $PKG/usr/doc/${DO}gcc-${VERSION}/libobjc
  ( cd libobjc
    cp -a README README.threads THREADS THREADS.MACH \
      $PKG/usr/doc/${DO}gcc-${VERSION}/libobjc
  )
  mkdir -p $PKG/usr/doc/${DX}gcc-${VERSION}/libstdc++-v3
  ( cd libstdc++-v3
    cp -a README $PKG/usr/doc/${DX}gcc-${VERSION}/libstdc++-v3
    cp -a docs/html/faq/index.html $PKG/usr/doc/${DX}gcc-${VERSION}/libstdc++-v3/faq.html
  )
)
# build gcc
( mkdir gcc.build.lnx;
  cd gcc.build.lnx;
  # CFLAGS="-Wall -g1 -O2"
  # CFLAGS="-Wall -O2" LDFLAGS=-s
  # CXXFLAGS="-O2"
  ../gcc-$VERSION/configure --prefix=/usr \
              --enable-shared \
              --enable-threads=posix \
              --enable-__cxa_atexit \
              --disable-checking \
              --with-gnu-ld \
              --verbose \
              --target=${TARGET} \
              --host=${TARGET}
  # Include all debugging info:
  #make bootstrap;
  # Include less debugging info:
  #make CFLAGS='-O2' LIBCFLAGS='-g -O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap
  # Include even less debugging info:
  make BOOT_CFLAGS='-O2 -march=i386 -mcpu=i686' STAGE1_CFLAGS='-O2 -march=i386 -mcpu=i686' CFLAGS='-O2 -march=i386 -mcpu=i686' CXXFLAGS='-O2 -march=i386 -mcpu=i686' LIBCFLAGS='-O2 -g -march=i386 -mcpu=i686' LIBCXXFLAGS='-O2 -g -march=i386 -mcpu=i686 -fno-implicit-templates' GCJFLAGS='-O2 -march=i386 -mcpu=i686' bootstrap
  ( cd gcc
    make gnatlib GNATLIBCFLAGS="-g -O2"
    # This wants a shared -ladd2line?
    #make gnatlib-shared
    make gnattools
  )
  make info
  make check;
  make install DESTDIR=$PKG
#  make ada.install-common DESTDIR=$PKG
#  make install-gnatlib DESTDIR=$PKG
  make -i install-info DESTDIR=$PKG

  chmod 755 $PKG/usr/lib/libgcc_s.so.1

  # This is provided by binutils, so delete it here:
  rm -f $PKG/usr/lib/libiberty.a

  # Strip out unneeded stuff from the libraries and binaries:
  ( cd $PKG
    find . | xargs file | grep "ELF 32-bit LSB executable" | grep 80386 | cut -f 1 -d : | xargs strip --strip-unneeded
    find . | xargs file | grep "ELF 32-bit LSB shared object" | grep 80386 | cut -f 1 -d : | xargs strip --strip-unneeded
  )
  # Most people debug their own code (not the libraries), so we'll strip these.
  # It cuts the size down quite a bit.
  find $PKG/usr/lib/gcc-lib -name "*.a" | xargs strip -g

  # Fix stuff up:
  ( cd $PKG/usr/info ; rm dir ; gzip -9 * )
  ( cd $PKG
    mkdir -p lib
    cd lib
    ln -sf /usr/bin/cpp .
  )
  ( cd $PKG/usr/bin
    mv g++ g++-gcc-$VERSION
    mv gcc gcc-$VERSION
    mv g77 g77-gcc-$VERSION
    ln -sf g++-gcc-$VERSION g++
    ln -sf gcc-$VERSION gcc
    ln -sf g77-gcc-$VERSION g77 
    ln -sf g++ c++
    ln -sf gcc cc
    ln -sf gcc-$VERSION i386-slackware-linux-gcc 
    ln -sf g++-gcc-$VERSION i386-slackware-linux-c++
    ln -sf g++-gcc-$VERSION i386-slackware-linux-g++
    ln -sf g77 f77
    chown root.bin * .
  )
  ( cd $PKG/usr/man
    gzip -9 */*
    cd man1
    ln -sf g++.1.gz c++.1.gz
    ln -sf g77.1.gz f77.1.gz
    ln -sf gcc.1.gz cc.1.gz
  )  

  mkdir -p $PKG/install
  # This big package will need to be split...
  ( cd $CWD
    for file in slack-desc* ; do
      cat $file > $PKG/install/$file
    done )
  # Leave a default so the package can work as-is:
  cp $PKG/install/slack-desc.gcc $TMP/package-gcc/install/slack-desc

  # build the tgz package
  (
    cd $PKG;
    makepkg -l y -c n $TMP/gcc-$VERSION-$ARCH-$BUILD.tgz
  )
# keep a log
) 2>&1 | tee $TMP/gcc.build.log

cat << EOF

************************************************
* OK, now you must edit the *.la files to make *
* sure libtool in it's infinate wisdom has not *
* inserted lots of $TMP paths into the         *
* dependancy_libs section.  I've verified that *
* it's not the "make install prefix=/...."     *
* (or now, the "make install DESTDIR=$PKG")    *
* causing this -- it's libtool failing to have *
* a clue.  It's possible that a sed script     *
* could also strip this garbage out, but I     *
* trust doing it myself more.  YMMV.           *
************************************************

EOF