AMBuildScript

# vim: set sts=2 ts=8 sw=2 tw=99 et ft=python:
import os, sys

def ResolveEnvPath(env, folder):
  if env in os.environ:
    path = os.environ[env]
    if os.path.isdir(path):
      return path
    return None

  head = os.getcwd()
  oldhead = None
  while head != None and head != oldhead:
    path = os.path.join(head, folder)
    if os.path.isdir(path):
      return path
    oldhead = head
    head, tail = os.path.split(head)

  return None

def SDKPath():
    sdk_folder = 'hl2sdk-csgo'
    sdk_envvar = 'HL2SDKCSGO'
	
    if builder.options.hl2sdk_root:
      sdk_path = os.path.join(builder.options.hl2sdk_root, sdk_folder)
    else:
      sdk_path = ResolveEnvPath(sdk_envvar, sdk_folder)
    if sdk_path is None or not os.path.isdir(sdk_path):
      raise Exception('Could not find a valid path for {0}'.format(sdk_envvar))
    else:
      sdk_path = os.path.abspath(os.path.normpath(sdk_path))
    return sdk_path

class VSPConfig(object):
  def __init__(self):
    self.sdk_path = SDKPath()
    self.binaries = []

  @property
  def tag(self):
    if builder.options.debug == '1':
      return 'Debug'
    return 'Release'

  def configure(self):
    cxx = builder.DetectCompilers()

    if cxx.like('gcc'):
      self.configure_gcc(cxx)
    elif cxx.vendor == 'msvc':
      self.configure_msvc(cxx)

    # Optimizaiton
    if builder.options.opt == '1':
      cxx.defines += ['NDEBUG']

    # Debugging
    if builder.options.debug == '1':
      cxx.defines += ['DEBUG', '_DEBUG']

    # Platform-specifics
    if builder.target_platform == 'linux':
      self.configure_linux(cxx)
    elif builder.target_platform == 'windows':
      self.configure_windows(cxx)

  def configure_gcc(self, cxx):
    cxx.defines += [
      'stricmp=strcasecmp',
      '_stricmp=strcasecmp',
      '_snprintf=snprintf',
      '_vsnprintf=vsnprintf',
      'HAVE_STDINT_H',
      'HAVE_STRING_H',
      'GNUC',
    ]
    cxx.cflags += [
      '-pipe',
      '-fno-strict-aliasing',
      '-Wall',
      '-Werror',
      '-Wno-unused',
      '-Wno-switch',
      '-Wno-array-bounds',
      '-msse4.2',
      '-m32',
      '-fvisibility=hidden',
	  '-fasm-blocks',
    ]
    cxx.cxxflags += [
      '-std=c++11',
      '-fno-exceptions',
      '-fno-threadsafe-statics',
      '-Wno-non-virtual-dtor',
      '-Wno-overloaded-virtual',
      '-fvisibility-inlines-hidden',
      '-fno-rtti',
    ]
    cxx.linkflags += ['-m32']

    have_gcc = cxx.vendor == 'gcc'
    have_clang = cxx.vendor == 'clang'
    if cxx.version >= 'clang-3.6':
      cxx.cxxflags += ['-Wno-inconsistent-missing-override']
    if cxx.version >= 'clang-10.0':
      cxx.cxxflags += ['-Wno-implicit-int-float-conversion']
    if have_clang or (cxx.version >= 'gcc-4.6'):
      cxx.cflags += ['-Wno-narrowing']
    if have_clang or (cxx.version >= 'gcc-4.7'):
      cxx.cxxflags += ['-Wno-delete-non-virtual-dtor']
    if cxx.version >= 'gcc-4.8':
      cxx.cflags += ['-Wno-unused-result']

    if have_clang:
      cxx.cxxflags += ['-Wno-implicit-exception-spec-mismatch']
      if cxx.version >= 'apple-clang-5.1' or cxx.version >= 'clang-3.4':
        cxx.cxxflags += ['-Wno-deprecated-register']
      else:
        cxx.cxxflags += ['-Wno-deprecated']
      cxx.cflags += ['-Wno-sometimes-uninitialized']

    if have_gcc:
      cxx.cflags += ['-mfpmath=sse4.2']

    if builder.options.opt == '1':
      cxx.cflags += ['-O3']

  def configure_msvc(self, cxx):
    if builder.options.debug == '1':
      cxx.cflags += ['/MTd']
      cxx.linkflags += ['/NODEFAULTLIB:libcmt']
    else:
      cxx.cflags += ['/MT']
      cxx.linkflags += ['/NODEFAULTLIB:libcmtd']
    cxx.defines += [
      '_CRT_SECURE_NO_DEPRECATE',
      '_CRT_SECURE_NO_WARNINGS',
      '_CRT_NONSTDC_NO_DEPRECATE',
      '_ITERATOR_DEBUG_LEVEL=0',
    ]
    cxx.cflags += [
      '/W3',
    ]
    cxx.cxxflags += [
      '/EHsc',
      '/GR-',
      '/TP',
    ]
    cxx.linkflags += [
      '/MACHINE:X86',
      'kernel32.lib',
      'user32.lib',
      'gdi32.lib',
      'winspool.lib',
      'comdlg32.lib',
      'advapi32.lib',
      'shell32.lib',
      'ole32.lib',
      'oleaut32.lib',
      'uuid.lib',
      'odbc32.lib',
      'odbccp32.lib',
    ]

    if builder.options.opt == '1':
      cxx.cflags += ['/Ox', '/Zo']
      cxx.linkflags += ['/OPT:ICF', '/OPT:REF']

    if builder.options.debug == '1':
      cxx.cflags += ['/Od', '/RTC1']

    # This needs to be after our optimization flags which could otherwise disable it.
    # Don't omit the frame pointer.
    cxx.cflags += ['/Oy-']

  def configure_linux(self, cxx):
    cxx.defines += ['_LINUX', 'POSIX']
    cxx.linkflags += ['-lm']
    if cxx.vendor == 'gcc':
      cxx.linkflags += ['-static-libgcc']
    elif cxx.vendor == 'clang':
      cxx.linkflags += ['-lgcc_eh']

  def configure_windows(self, cxx):
    cxx.defines += ['WIN32', '_WINDOWS']
	
  def ConfigureForVSP(self, context, compiler):
    compiler.cxxincludes += [
      os.path.join(context.currentSourcePath)
    ]
    return compiler

  def ConfigureForHL2(self, binary):
    compiler = binary.compiler
	
    if compiler.like('msvc'):
      compiler.defines += ['COMPILER_MSVC', 'COMPILER_MSVC32']
      if compiler.version >= 1900:
        compiler.linkflags += ['legacy_stdio_definitions.lib']
    else:
      compiler.defines += ['COMPILER_GCC']
      compiler.linkflags += ['-lstdc++']
      compiler.defines += ['_GLIBCXX_USE_CXX11_ABI=0']

    paths = [
      ['public'],
      ['public', 'engine'],
      ['public', 'mathlib'],
      ['public', 'vstdlib'],
      ['public', 'tier0'],
      ['public', 'tier1'],
      ['public', 'game', 'server'],
      ['public', 'toolframework'],
      ['game', 'shared'],
      ['common']
    ]
	
    # Memory management with g_pMemAlloc
    binary.sources += [os.path.join(self.sdk_path, 'public', 'tier0', 'memoverride.cpp')]
    
    for path in paths:
      compiler.cxxincludes += [os.path.join(self.sdk_path, *path)]

    if builder.target_platform == 'linux':
      lib_folder = os.path.join(self.sdk_path, 'lib', 'linux')
      compiler.postlink += [
        compiler.Dep(os.path.join(lib_folder, 'tier1_i486.a')),
        compiler.Dep(os.path.join(lib_folder, 'mathlib_i486.a'))
      ]

    dynamic_libs = []
    if builder.target_platform == 'linux':
      dynamic_libs = ['libtier0.so', 'libvstdlib.so']
    elif builder.target_platform == 'windows':
      for lib in ['tier0', 'tier1', 'vstdlib', 'mathlib']:
        lib_path = os.path.join(self.sdk_path, 'lib', 'public', lib) + '.lib'
        compiler.linkflags.append(compiler.Dep(lib_path))

    for library in dynamic_libs:
      source_path = os.path.join(lib_folder, library)
      output_path = os.path.join(binary.localFolder, library)

      def make_linker(source_path, output_path):
        def link(context, binary):
          cmd_node, (output,) = context.AddSymlink(source_path, output_path)
          return output
        return link

      linker = make_linker(source_path, output_path)
      compiler.linkflags[0:0] = [compiler.Dep(library, linker)]

    return binary

  def Project(self, context, name):
    project = context.compiler.LibraryProject(name)
    self.ConfigureForVSP(context, project.compiler)
    return project

  def Config(self, project, name):
    binary = project.Configure(name, self.tag)
    return self.ConfigureForHL2(binary)

VSP = VSPConfig()
VSP.configure()

# Add additional buildscripts here
BuildScripts = [
  'plugin/AMBuilder',
  'PackageScript',
]

builder.RunBuildScripts(BuildScripts, {'VSP': VSP})