src/platform/emscripten.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org )
   2 #
   3 # Copyright 2014 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # Compile to JavaScript using the Emscripten SDK
  18 module emscripten
  19
  20 import platform
  21 import compiler::abstract_compiler
  22
  23 redef class ToolContext
  24         redef fun platform_from_name(name)
  25         do
  26                 if name == "emscripten" then return new EmscriptenPlatform
  27                 return super
  28         end
  29 end
  30
  31 class EmscriptenPlatform
  32         super Platform
  33
  34         redef fun name do return "emscripten"
  35         redef fun supports_libunwind do return false
  36         redef fun supports_libgc do return false
  37         redef fun supports_linker_script do return false
  38         redef fun toolchain(toolcontext, compiler) do return new EnscriptenToolchain(toolcontext, compiler)
  39 end
  40
  41 class EnscriptenToolchain
  42         super MakefileToolchain
  43
  44         redef fun makefile_name do return "{super}.js.mk"
  45
  46         redef fun default_outname do return "{super}.js"
  47
  48         redef fun write_makefile(compile_dir, cfiles)
  49         do
  50                 super
  51
  52                 var emcc_make_flags = "CC=emcc CXX=em++ CFLAGS='-Wno-unused-value -Wno-switch -Qunused-arguments -s ALLOW_MEMORY_GROWTH=1"
  53
  54                 var release = toolcontext.opt_release.value
  55                 if release then
  56                         emcc_make_flags += "' LDFLAGS='--minify 1'"
  57                 else emcc_make_flags += " -g'"
  58
  59                 var make_flags = self.toolcontext.opt_make_flags.value or else ""
  60                 make_flags += emcc_make_flags
  61                 self.toolcontext.opt_make_flags.value = make_flags
  62         end
  63 end