# This file exists to support comm-central from building with mozilla-central

# as a subdirectory to building as a subdirectory of mozilla-central.

# In order to have mozconfig files that support building in either

# configuration during the transition, without duplicating the logic

# in every mozconfig file, there needs to exist a file that exists at the

# same path in mozilla-central and comm-central.

# This file gets included under two circumstances.

# 1. comm-central is being built as a subdirectory of mozilla-central.

# 2. comm-central is being built as a parent directory of mozilla-central,

#    but `mach` was invoked from the objdir and thinks that $topsrcdir is

#    the mozilla-central directory. If we detect this is the case, we fix

#    $topsrcdir before proceeding.

# In either case, we then invoke the identically named file that lives in

# comm-central, which sets some variables that can be used by the rest of the

# mozconfig.

# Note that the top-level mozconfig file is in $2.

if [ "$(dirname "$2")" = "$topsrcdir" ]; then

  # No weirdness

  if [ -d "$topsrcdir/mail" ]; then

    # Building with comm-central as top-level directory.

    echo "ERROR: Should not include mozilla/build/mozconfig.comm when building"

    echo "       with comm-central as top-level directory."

    exit 1

  elif [ -d "$topsrcdir/comm/mail" ]; then

    # Building with mozila-central as top-level directory.

    . "$topsrcdir/comm/build/mozconfig.comm-support"

  else

    echo "ERROR: Unknown build directory layout."

    exit 1

  fi

elif [ "$(dirname "$2")" = "$(dirname "$topsrcdir")" ]; then

  if [ -d "$topsrcdir/../mail" ]; then

    # Building with comm-central as top-level directory;

    # but invoked with $topsrcdir as "mozilla/".

    topsrcdir=$(dirname "$topsrcdir")

    . "$topsrcdir/build/mozconfig.comm-support"

  else

    echo "ERROR: Unknown build directory layout."

    exit 1

  fi

else

  echo "ERROR: Unknown build directory layout."

  exit 1

fi