zircon/public/gn/fidl/tables.gni

# Copyright 2019 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This is the $fidl_support module for the C/C++ FIDL tables, which are
# required by C and C++ bindings (and maybe others).  See fidl_library() for
# details.  This file should not normally be imported by other code.

# This tells fidl_library() to invoke fidl_tables().
fidl_support_templates = [
  {
    import = "$zx/public/gn/fidl/tables.gni"
    target = "fidl_tables"
    fidlc = "tables"
  },
]

# This tells fidl_library() what fidlc outputs fidl_tables() requires.
fidl_support_fidlc = [
  {
    name = "tables"
    files = [
      {
        switch = "--tables"
        path = "tables.cpp"
      },
    ]
  },
]

# Provide C/C++ FIDL tables for fidl_library().  **Do not use directly!**
#
# This is never used directly, but only indirectly by fidl_library().
# See there for details.
#
# This produces source_set("$target_name.tables").  Other bindings targets
# depend on it.
template("fidl_tables") {
  not_needed([ "target_name" ])
  not_needed(invoker, "*")
  if (current_toolchain != default_toolchain) {
    fidl_target = target_name
    tables_target = "$fidl_target.tables"

    source_set(tables_target) {
      forward_variables_from(invoker,
                             [
                               "visibility",
                               "testonly",
                             ])

      # Depend on the fidlc generation step and compile what it produces.
      deps = invoker.fidlc_deps
      sources = invoker.fidlc_outputs

      # The generated code uses this.
      deps += [ "$zx/system/ulib/fidl" ]
    }
  }
}