# Maintainer: Joey Dumont <joey.dumont@gmail.com>
# Contributor: Viktor Drobot (aka dviktor) linux776 [at] gmail [dot] com
# Contributor: Sebastiaan Lokhorst <sebastiaanlokhorst@gmail.com>
# Contributor: frankspace
# Contributor: Renan Manola <rmanola@gmail.com>
# Contributor: Stefan Husmann <stefan-husmann@t-online.de>
# Contributor: Joey Dumont <joey.dumont@gmail.com>
# Contributor: Sven-Hendrik Haase <sh@lutzhaase.com>
# Contributor: Allan McRae <allan@archlinux.org>

pkgbase=gcc6
pkgname=('gcc6' 'gcc6-libs' 'gcc6-fortran' 'gcc6-gcj')
pkgver=6.5.0
_ver=6
_islver=0.18
_cloogver=0.18.4
pkgrel=4
pkgdesc="The GNU Compiler Collection (6.x.x)"
arch=(x86_64)
license=(GPL LGPL FDL custom)
url="https://gcc.gnu.org/gcc-6/"
makedepends=(binutils libmpc doxygen subversion java-environment-common zip jdk8-openjdk gtk2 libart-lgpl libxtst)
options=(!emptydirs)
source=(https://gcc.gnu.org/pub/gcc/releases/gcc-${pkgver}/gcc-${pkgver}.tar.xz
        https://gcc.gnu.org/pub/gcc/infrastructure/isl-${_islver}.tar.bz2
        http://www.bastoul.net/cloog/pages/download/cloog-${_cloogver}.tar.gz
	"libsanitizer.patch"
	)
sha512sums=('ce046f9a50050fd54b870aab764f7db187fe7ea92eb4aaffb7c3689ca623755604e231f2af97ef795f41c406bb80c797dd69957cfdd51dfa2ba60813f72b7eac'
            '85d0b40f4dbf14cb99d17aa07048cdcab2dc3eb527d2fbb1e84c41b2de5f351025370e57448b63b2b8a8cf8a0843a089c3263f9baee1542d5c2e1cb37ed39d94'
            'd35d67b08ffe13c1a010b65bfe4dd02b0ae013d5b489e330dc950bd3514defca8f734bd37781856dcedf0491ff6122c34eecb4b0fe32a22d7e6bdadea98c8c23'
            'e7861f77d54ac9bc12cfc6d3498a9bc284e72f728435c23866ac0763fb93e94e431d819c3def9f5aa03acbafc437141882e7b3746f4574ec6e5eb66b555cebb6')

_libdir="/usr/lib/gcc/$CHOST/$pkgver"

prepare() {
  cd gcc-$pkgver

  patch --forward --strip=2 --input=${srcdir}/libsanitizer.patch

  # Link isl/cloog for in-tree builds
  ln -sf ../isl-${_islver} isl
  ln -sf ../cloog-${_cloogver} cloog

  # Do not run fixincludes
  sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in

  # Arch Linux installs x86_64 libraries /lib
  sed -i '/m64=/s/lib64/lib/' gcc/config/i386/t-linux64

  # hack! - some configure tests for header files using "$CPP $CPPFLAGS"
  sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" {libiberty,gcc}/configure

  # Arch uses python version 3 as default python (for gcc6-gcj).
  sed -i '1s+python+python2+' libjava/contrib/aot-compile.in

  mkdir -p "${srcdir}/gcc-build"
}

build() {
  export LD_PRELOAD=/usr/lib/libstdc++.so

  cd gcc-build

  # using -pipe causes spurious test-suite failures
  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48565
  CFLAGS=${CFLAGS/-pipe/}
  CXXFLAGS=${CXXFLAGS/-pipe/}

  "${srcdir}/gcc-$pkgver/configure" --prefix=/usr \
      --libdir=/usr/lib \
      --libexecdir=/usr/lib \
      --mandir=/usr/share/man \
      --infodir=/usr/share/info \
      --with-bugurl=https://bugs.archlinux.org/ \
      --enable-languages=c,c++,fortran,lto,java \
      --enable-shared \
      --enable-threads=posix \
      --enable-libmpx \
      --with-system-zlib \
      --with-isl \
      --enable-__cxa_atexit \
      --disable-libunwind-exceptions \
      --enable-clocale=gnu \
      --disable-libstdcxx-pch \
      --disable-libssp \
      --enable-gnu-unique-object \
      --enable-linker-build-id \
      --enable-lto \
      --enable-plugin \
      --with-linker-hash-style=gnu \
      --enable-gnu-indirect-function \
      --disable-multilib \
      --disable-werror \
      --enable-checking=release \
      --enable-java-awt=gtk \
      --with-java-home="$JAVA_HOME" \
      --enable-libgcj-multifile \
      --enable-default-pie \
      --enable-default-ssp \
      --enable-version-specific-runtime-libs \
      --program-suffix=-${_ver} \
      --build="${CHOST}"

  make

  # make documentation
  make -C ${CHOST}/libstdc++-v3/doc doc-man-doxygen
}

package_gcc6-libs() {
  pkgdesc="Runtime libraries shipped by GCC"
  depends=('glibc>=2.25')
  options=('!emptydirs' '!strip')

  export LD_PRELOAD=/usr/lib/libstdc++.so

  cd gcc-build
  make -C $CHOST/libgcc DESTDIR=${pkgdir} install-shared
  rm ${pkgdir}/${_libdir}/libgcc_eh.a
  mv ${pkgdir}/usr/lib/gcc/$CHOST/lib/libgcc_s.so* $pkgdir/$_libdir

  for lib in libatomic \
             libcilkrts \
             libjava \
             libgfortran \
             libgomp \
             libitm \
             libquadmath \
             libsanitizer/{a,l,ub}san \
             libstdc++-v3/src \
             libvtv
  do
    make -C $CHOST/$lib DESTDIR=${pkgdir} install-toolexeclibLTLIBRARIES
  done

  make -C $CHOST/libsanitizer/tsan DESTDIR=${pkgdir} install-toolexeclibLTLIBRARIES

  make -C $CHOST/libstdc++-v3/po DESTDIR=${pkgdir} install
  make -C $CHOST/libmpx DESTDIR=${pkgdir} install
  rm ${pkgdir}/${_libdir}/libmpx.spec

  for lib in libgomp libitm libquadmath
  do
    make -C $CHOST/$lib DESTDIR=${pkgdir} install-info
  done

  # Lazy way of dealing with conflicting files...
  rm -rf ${pkgdir}/usr/share/{info,locale,man}

  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/gcc-$pkgver/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/$pkgname/RUNTIME.LIBRARY.EXCEPTION
}

package_gcc6() {
  pkgdesc="The GNU Compiler Collection - C and C++ frontends"
  depends=("gcc6-libs=${pkgver}-${pkgrel}" 'binutils>=2.28' 'libmpc')
  options=('staticlibs')

  export LD_PRELOAD=/usr/lib/libstdc++.so

  cd gcc-build

  make -C gcc DESTDIR=${pkgdir} install-driver install-cpp install-gcc-ar \
    c++.install-common install-headers install-plugin install-lto-wrapper

  for _i in gcov gcov-dump gcov-tool collect2 collect-ld lto1
  do
    install -Dm755 gcc/$_i $pkgdir/usr/bin/${_i}-${_ver}
  done

  make -C $CHOST/libgcc DESTDIR=${pkgdir} install
  rm -rf ${pkgdir}/usr/lib/gcc/${CHOST}/lib*

  make -C $CHOST/libstdc++-v3/src DESTDIR=${pkgdir} install
  make -C $CHOST/libstdc++-v3/include DESTDIR=${pkgdir} install
  make -C $CHOST/libstdc++-v3/libsupc++ DESTDIR=${pkgdir} install
  make -C $CHOST/libstdc++-v3/python DESTDIR=${pkgdir} install

  make DESTDIR=${pkgdir} install-libcc1
  install -d $pkgdir/usr/share/gdb/auto-load/usr/lib
  #mv ${pkgdir}/${_libdir}/libstdc++.so.6.*-gdb.py \
  #  ${pkgdir}/usr/share/gdb/auto-load/{_libdir}/
  rm ${pkgdir}/${_libdir}/libstdc++.so*

  make DESTDIR=${pkgdir} install-fixincludes
  make -C gcc DESTDIR=${pkgdir} install-mkheaders

  make -C lto-plugin DESTDIR=${pkgdir} install
  install -dm755 ${pkgdir}/usr/lib/bfd-plugins/
  ln -s ${_libdir}/liblto_plugin.so ${pkgdir}/usr/lib/bfd-plugins/

  make -C $CHOST/libcilkrts DESTDIR=${pkgdir} install-nodist_toolexeclibHEADERS \
    install-nodist_cilkincludeHEADERS
  make -C $CHOST/libgomp DESTDIR=${pkgdir} install-nodist_toolexeclibHEADERS \
    install-nodist_libsubincludeHEADERS
  make -C $CHOST/libitm DESTDIR=${pkgdir} install-nodist_toolexeclibHEADERS
  make -C $CHOST/libquadmath DESTDIR=${pkgdir} install-nodist_libsubincludeHEADERS
  make -C $CHOST/libsanitizer DESTDIR=${pkgdir} install-nodist_{saninclude,toolexeclib}HEADERS
  make -C $CHOST/libsanitizer/asan DESTDIR=${pkgdir} install-nodist_toolexeclibHEADERS
  make -C $CHOST/libmpx DESTDIR=${pkgdir} install-nodist_toolexeclibHEADERS

  make -C gcc DESTDIR=${pkgdir} install-man install-info
  rm ${pkgdir}/usr/share/man/man1/gfortran-${_ver}.1
  rm ${pkgdir}/usr/share/info/gfortran.info

  make -C libcpp DESTDIR=${pkgdir} install
  make -C gcc DESTDIR=${pkgdir} install-po

  # many packages expect this symlink
  ln -s gcc-${_ver} ${pkgdir}/usr/bin/cc-${_ver}

  # POSIX conformance launcher scripts for c89 and c99
  cat > $pkgdir/usr/bin/c89-${_ver} <<"EOF"
#!/bin/sh
fl="-std=c89"
for opt; do
  case "$opt" in
    -ansi|-std=c89|-std=iso9899:1990) fl="";;
    -std=*) echo "`basename $0` called with non ANSI/ISO C option $opt" >&2
            exit 1;;
  esac
done
exec gcc-${_ver} $fl ${1+"$@"}
EOF

  cat > $pkgdir/usr/bin/c99-${_ver} <<"EOF"
#!/bin/sh
fl="-std=c99"
for opt; do
  case "$opt" in
    -std=c99|-std=iso9899:1999) fl="";;
    -std=*) echo "`basename $0` called with non ISO C99 option $opt" >&2
            exit 1;;
  esac
done
exec gcc-${_ver} $fl ${1+"$@"}
EOF

  chmod 755 $pkgdir/usr/bin/c{8,9}9-${_ver}

  # Install Runtime Library Exception
  install -d ${pkgdir}/usr/share/licenses/$pkgname/
  ln -s ../gcc-libs/RUNTIME.LIBRARY.EXCEPTION ${pkgdir}/usr/share/licenses/$pkgname

  # Lazy way of dealing with conflicting files...
  rm -rf ${pkgdir}/usr/share/{info,locale,man}

  # Move potentially conflicting stuff to version specific subdirectory
  #[[ -d ${pkgdir}/usr/lib/gcc/${CHOST}/lib/ ]] && mv ${pkgdir}/usr/lib/gcc/${CHOST}/lib/lib* \
  #               ${pkgdir}/usr/lib/gcc/${CHOST}/${pkgver}/
  mv $pkgdir/usr/lib/bfd-plugins/liblto_plugin.so ${pkgdir}/usr/lib/bfd-plugins/liblto_plugin-${_ver}.so
  mv ${pkgdir}/usr/lib/*.so* ${pkgdir}/${_libdir}/
  install -Dm755 gcc/cc1     ${pkgdir}/${_libdir}/cc1
  install -Dm755 gcc/cc1plus ${pkgdir}/${_libdir}/cc1plus
}

package_gcc6-fortran() {
  pkgdesc="Fortran front-end for GCC"
  depends=("gcc6=$pkgver-$pkgrel")
  options=('!emptydirs')

  export LD_PRELOAD=/usr/lib/libstdc++.so

  cd gcc-build
  make -C $CHOST/libgfortran DESTDIR=$pkgdir install-cafexeclibLTLIBRARIES \
    install-{toolexeclibDATA,nodist_fincludeHEADERS}
  make -C $CHOST/libgomp DESTDIR=$pkgdir install-nodist_fincludeHEADERS
  make -C gcc DESTDIR=$pkgdir fortran.install-common
  install -Dm755 gcc/f951 $pkgdir/${_libdir}/f951

  ln -s gfortran-6 ${pkgdir}/usr/bin/f95-${_ver}

  # Install Runtime Library Exception
  install -d ${pkgdir}/usr/share/licenses/$pkgname
  ln -s ../gcc-libs/RUNTIME.LIBRARY.EXCEPTION ${pkgdir}/usr/share/licenses/$pkgname/
}

package_gcc6-gcj() {
  pkgdesc="Java front-end for GCC"
  depends=("gcc6=$pkgver-$pkgrel")
  replaces=('gcc-gcj')
  options=('!emptydirs')

  export LD_PRELOAD=/usr/lib/libstdc++.so

  # Install libjava.
  cd gcc-build
  make -j1 DESTDIR=${pkgdir} install-target-libjava

  # Install java-common.
  cd gcc
  make -j1 DESTDIR=${pkgdir} java.install-common java.install-man

  install -m755 jc1       ${pkgdir}/${_libdir}/
  install -m755 jvgenmain ${pkgdir}/${_libdir}/

  # Remove conflicting files.
  rm ${pkgdir}/${_libdir}/libg{cj,ij}*.so*

  # Rename two files to not conflict to classpath
  mv ${pkgdir}/usr/share/info/cp-tools.info ${pkgdir}/usr/share/info/cp-tools-gcj.info

  linkdir=`basename $pkgdir/usr/lib/gcj-${pkgver}*`
  ln -sf $linkdir ${pkgdir}/usr/lib/gcj-${pkgver%.?}
  ln -sf libgcj-${pkgver}.jar ${pkgdir}/usr/share/java/libgcj-${pkgver%.?}.jar
  ln -sf libgcj-${pkgver}.jar ${pkgdir}/usr/share/java/libgcj.jar
  ln -sf libgcj-tools-${pkgver}.jar ${pkgdir}/usr/share/java/libgcj-tools-${pkgver%.?}.jar
  ln -sf libgcj-tools-${pkgver}.jar ${pkgdir}/usr/share/java/libgcj-tools.jar

  rm ${pkgdir}/${_libdir}/libgcc_eh.a
  rm ${pkgdir}/${_libdir}/crtbegin.o
  rm ${pkgdir}/${_libdir}/crtbeginS.o
  rm ${pkgdir}/${_libdir}/crtbeginT.o
  rm ${pkgdir}/${_libdir}/crtend.o
  rm ${pkgdir}/${_libdir}/crtendS.o
  rm ${pkgdir}/${_libdir}/crtfastmath.o
  rm ${pkgdir}/${_libdir}/crtprec32.o
  rm ${pkgdir}/${_libdir}/crtprec64.o
  rm ${pkgdir}/${_libdir}/crtprec80.o
  rm ${pkgdir}/${_libdir}/include/unwind.h
  rm ${pkgdir}/${_libdir}/libgcc.a
  rm ${pkgdir}/${_libdir}/libgcov.a
}