# remove tsan (thread sanitizer) plugin, not available for i686
pkgname=(
  $(
    printf '%s\n' "${pkgname[@]}" | \
      grep -vFx 'lib32-gcc-libs'
  )
)
unset -f 'package_lib32-gcc-libs'
eval "$(
  declare -f prepare | \
    sed '
      \,/s/lib64/lib/, d
    '
  declare -f build | \
    sed '
      /configure/ s/--enable-multilib/--disable-multilib/
      /configure/ s,--with-bugurl=https://bugs\.archlinux\.org/,--with-bugurl=https://bugs.archlinux32.org/,
      /configure/ s/;$/ --build=$CHOST;/
    '
  declare -f package_gcc-libs | \
    sed '
      s/\$pkgname-multilib//
      s@libsanitizer/{a,l,ub,t}san@libsanitizer/{a,l,ub}san@
      /provides=/s/libtsan.so//
      \@/usr/lib32/@ d
    '
  declare -f package_gcc | \
    sed '
      s/"lib32-gcc-libs[^"]*"//g
      s@make.*tsan.*install@#\0@
    '
  declare -f package_gcc-ada | \
    sed '
      \,cd .*/32/libada,{
        N
        d
      }
    '
)"
eval "$(
  for name in "${pkgname[@]}"; do
    declare -f package_${name} | \
      sed '
        s/$pkgname-multilib//
        s/{,32}//
        \,/lib32/,d
        \,/32/,d
      '
  done
)"

# i486-specific

# no ADA
makedepends=(${makedepends[@]//gcc-ada/})
makedepends_i686+=('gcc-ada')

if [ "${CARCH}" = "i486" ]; then
  package_gcc-ada() {
    touch "$pkgdir/this-is-a-dummy-package"
  }

  eval "$(
    declare -f build | \
      sed '
        /enable-languages/ s/,ada//
      '
  )"

  eval "$(
    declare -f package_gcc | \
      sed '
        s/,gnat-style,gnat_rm,gnat_ugn//
      '
  )"

  # building toolchain (gcc): again, lobtool problems
  # /usr/lib/gcc/i486-pc-linux-gnu/7.3.0/ld: cannot find -lquadmath
  # collect2: error: ld returned 1 exit status
  # libtool: install: error: relink `libgfortran.la' with the above command before installing it
  # make: Leaving directory '/build/gcc/src/gcc-build/i486-pc-linux-gnu/libgfortran'
  # => wrong link order: libgfortran requires libquadmath
  eval "$(
    declare -f package_gcc-libs | \
      sed '
        /for lib in / s/libgfortran/libquadmath libgfortran/
      '
  )"

  # disable CET (Control Flow instructions endbr32/enbr64)
  eval "$(
    declare -f build | \
      sed '
        s/--enable-cet=auto/--disable-cet/
      '
  )"

else

  # force enable CET (Control Flow instructions endbr32/enbr64)
  eval "$(
    declare -f build | \
      sed '
        s/--enable-cet=auto/--enable-cet/
      '
  )"

fi

makedepends_pentium4=("${makedepends_i686[@]}")

source[1]='isl-0.24.tar.xz::https://downloads.sourceforge.net/project/libisl/isl-0.24.tar.xz?ts=gAAAAABhojIcYmUfplFkh4GCklCNjXe6c5A561-eOrQD92l7Dd9Lw5vOoApEOzfk2XL8NElrqvTKrH0enBWHiWCznbwG1pkAaQ%3D%3D&r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Flibisl%2Ffiles%2Fisl-0.24.tar.xz%2Fdownload%3Fuse_mirror%3Ddeac-fra%26download%3D%26failedmirror%3Ddeac-riga.dl.sourceforge.net'

makedepends=(${makedepends[@]//lib32-glibc/})
makedepends=(${makedepends[@]//lib32-gcc-libs/})