# maintainer: Manuel Tortosa <manutortoasa@chakra-project.org>

# toolchain build order: 
# lib32-glibc > binutils-multilib > gcc-multilib > binutils-multilib > lib32-glibc

_pkgbasename=glibc
pkgname=lib32-$_pkgbasename
pkgver=2.19
pkgrel=1
pkgdesc="GNU C Library (32-bit)"
arch=('x86_64')
url="http://www.gnu.org/software/libc"
license=('GPL' 'LGPL')
#depends=($_pkgbasename=$pkgver)
makedepends=('gcc-multilib>=4.8')
options=('!strip' '!emptydirs' 'staticlibs')
source=(http://ftp.gnu.org/gnu/libc/${_pkgbasename}-${pkgver}.tar.xz{,.sig}
        glibc-2.19-xattr_header.patch
        glibc-2.19-fix-sign-in-bsloww1-input.patch
        glibc-2.19-tzselect-default.patch
        lib32-glibc.conf)
md5sums=('e26b8cc666b162f999404b03970f14e4'
         'SKIP'
         '39a4876837789e07746f1d84cd8cb46a'
         '755a1a9d7844a5e338eddaa9a5d974cd'
         'c772dc99ddd8032ecbf43884ae0cf42e'
         '6e052f1cb693d5d3203f50f9d4e8c33b')

prepare() {
  cd ${srcdir}/${_pkgbasename}-${pkgver}

  # fix for {linux,sys}/xattr.h incompatibility - commit fdbe8eae
  patch -p1 -i $srcdir/glibc-2.19-xattr_header.patch

  # fix issues in sin/cos slow path calculation - commit ffe768a9
  patch -p1 -i $srcdir/glibc-2.19-fix-sign-in-bsloww1-input.patch

  # fix tzselect with missing TZDIR - commit 893b4f37/c72399fb
  patch -p1 -i $srcdir/glibc-2.19-tzselect-default.patch

  mkdir ${srcdir}/glibc-build
}

build() {
  cd ${srcdir}/glibc-build

  #if [[ ${CARCH} = "i686" ]]; then
    # Hack to fix NPTL issues with Xen, only required on 32bit platforms
    # TODO: make separate glibc-xen package for i686
    export CFLAGS="${CFLAGS} -mno-tls-direct-seg-refs"
  #fi

  echo "slibdir=/usr/lib32" >> configparms

  export CC="gcc -m32"
  export CXX="g++ -m32"

  # remove hardening options for building libraries
  CFLAGS=${CFLAGS/-fstack-protector/}
  CPPFLAGS=${CPPFLAGS/-D_FORTIFY_SOURCE=2/}

  ${srcdir}/${_pkgbasename}-${pkgver}/configure --prefix=/usr \
      --libdir=/usr/lib32 --libexecdir=/usr/lib32 \
      --with-headers=/usr/include \
      --with-bugurl=http://chakraos.org/bugtracker\
      --enable-add-ons=nptl,libidn \
      --enable-obsolete-rpc \
      --enable-kernel=2.6.32 \
      --enable-bind-now --disable-profile \
      --enable-stackguard-randomization \
      --enable-lock-elision \
      --enable-multi-arch i686-unknown-linux-gnu

  # build libraries with hardening disabled
  echo "build-programs=no" >> configparms
  make

  # re-enable hardening for programs
  sed -i "/build-programs=/s#no#yes#" configparms
  echo "CC += -fstack-protector -D_FORTIFY_SOURCE=2" >> configparms
  echo "CXX += -fstack-protector -D_FORTIFY_SOURCE=2" >> configparms
  make

  # remove harding in preparation to run test-suite
  sed -i '4,6d' configparms
}

check() {
  # the linker commands need to be reordered - fixed in 2.19
  LDFLAGS=${LDFLAGS/--as-needed,/}

  cd ${srcdir}/glibc-build
  make -k check || true
}

package() {
  cd ${srcdir}/glibc-build
  make install_root=${pkgdir} install

  rm -rf ${pkgdir}/{etc,sbin,usr/{bin,sbin,share},var}

  # We need one 32 bit specific header file
  find ${pkgdir}/usr/include -type f -not -name stubs-32.h -delete


  # Dynamic linker
  mkdir ${pkgdir}/usr/lib
  ln -s ../lib32/ld-linux.so.2 ${pkgdir}/usr/lib/

  # Add lib32 paths to the default library search path
  install -Dm644 "$srcdir/lib32-glibc.conf" "$pkgdir/etc/ld.so.conf.d/lib32-glibc.conf"

  # Symlink /usr/lib32/locale to /usr/lib/locale
  ln -s ../lib/locale "$pkgdir/usr/lib32/locale"
  
  # remove the static libraries that have a shared counterpart
  # libc, libdl, libm and libpthread are required for toolchain testsuites
  # in addition libcrypt appears widely required
  rm $pkgdir/usr/lib32/lib{anl,BrokenLocale,nsl,resolv,rt,util}.a

  # Do not strip the following files for improved debugging support
  # ("improved" as in not breaking gdb and valgrind...):
  #   ld-${pkgver}.so
  #   libc-${pkgver}.so
  #   libpthread-${pkgver}.so
  #   libthread_db-1.0.so

  cd $pkgdir
  strip $STRIP_BINARIES \
                        \
                        \
                        usr/lib32/getconf/*


  strip $STRIP_STATIC usr/lib32/*.a

  strip $STRIP_SHARED usr/lib32/{libanl,libBrokenLocale,libcidn,libcrypt}-*.so \
                      usr/lib32/libnss_{compat,db,dns,files,hesiod,nis,nisplus}-*.so \
                      usr/lib32/{libdl,libm,libnsl,libresolv,librt,libutil}-*.so \
                      usr/lib32/{libmemusage,libpcprofile,libSegFault}.so \
                      usr/lib32/{audit,gconv}/*.so
}