virtualx-engine/platform/osx/detect.py
Rémi Verschelde c2a669a9f0 SCons: Review uses of CCFLAGS, CXXFLAGS and CPPFLAGS
Many contributors (me included) did not fully understand what CCFLAGS,
CXXFLAGS and CPPFLAGS refer to exactly, and were thus not using them
in the way they are intended to be.

As per the SCons manual: https://www.scons.org/doc/HTML/scons-user/apa.html

- CCFLAGS: General options that are passed to the C and C++ compilers.
- CFLAGS: General options that are passed to the C compiler (C only;
  not C++).
- CXXFLAGS: General options that are passed to the C++ compiler. By
  default, this includes the value of $CCFLAGS, so that setting
  $CCFLAGS affects both C and C++ compilation.
- CPPFLAGS: User-specified C preprocessor options. These will be
  included in any command that uses the C preprocessor, including not
  just compilation of C and C++ source files [...], but also [...]
  Fortran [...] and [...] assembly language source file[s].

TL;DR: Compiler options go to CCFLAGS, unless they must be restricted
to either C (CFLAGS) or C++ (CXXFLAGS). Preprocessor defines go to
CPPFLAGS.
2019-04-24 16:57:58 +02:00

135 lines
4.9 KiB
Python

import os
import sys
from methods import detect_darwin_sdk_path
def is_active():
return True
def get_name():
return "OSX"
def can_build():
if (sys.platform == "darwin" or ("OSXCROSS_ROOT" in os.environ)):
return True
return False
def get_opts():
from SCons.Variables import BoolVariable, EnumVariable
return [
('osxcross_sdk', 'OSXCross SDK version', 'darwin14'),
('MACOS_SDK_PATH', 'Path to the macOS SDK', ''),
EnumVariable('debug_symbols', 'Add debugging symbols to release builds', 'yes', ('yes', 'no', 'full')),
BoolVariable('separate_debug_symbols', 'Create a separate file containing debugging symbols', False),
]
def get_flags():
return [
]
def configure(env):
## Build type
if (env["target"] == "release"):
if (env["optimize"] == "speed"): #optimize for speed (default)
env.Prepend(CCFLAGS=['-O3', '-fomit-frame-pointer', '-ftree-vectorize', '-msse2'])
else: #optimize for size
env.Prepend(CCFLAGS=['-Os','-ftree-vectorize', '-msse2'])
if (env["debug_symbols"] == "yes"):
env.Prepend(CCFLAGS=['-g1'])
if (env["debug_symbols"] == "full"):
env.Prepend(CCFLAGS=['-g2'])
elif (env["target"] == "release_debug"):
if (env["optimize"] == "speed"): #optimize for speed (default)
env.Prepend(CCFLAGS=['-O2'])
else: #optimize for size
env.Prepend(CCFLAGS=['-Os'])
env.Prepend(CPPFLAGS=['-DDEBUG_ENABLED'])
if (env["debug_symbols"] == "yes"):
env.Prepend(CCFLAGS=['-g1'])
if (env["debug_symbols"] == "full"):
env.Prepend(CCFLAGS=['-g2'])
elif (env["target"] == "debug"):
env.Prepend(CCFLAGS=['-g3'])
env.Prepend(CPPFLAGS=['-DDEBUG_ENABLED', '-DDEBUG_MEMORY_ENABLED'])
## Architecture
# Mac OS X no longer runs on 32-bit since 10.7 which is unsupported since 2014
# As such, we only support 64-bit
env["bits"] = "64"
## Compiler configuration
# Save this in environment for use by other modules
if "OSXCROSS_ROOT" in os.environ:
env["osxcross"] = True
if not "osxcross" in env: # regular native build
env.Append(CCFLAGS=['-arch', 'x86_64'])
env.Append(LINKFLAGS=['-arch', 'x86_64'])
if (env["macports_clang"] != 'no'):
mpprefix = os.environ.get("MACPORTS_PREFIX", "/opt/local")
mpclangver = env["macports_clang"]
env["CC"] = mpprefix + "/libexec/llvm-" + mpclangver + "/bin/clang"
env["LINK"] = mpprefix + "/libexec/llvm-" + mpclangver + "/bin/clang++"
env["CXX"] = mpprefix + "/libexec/llvm-" + mpclangver + "/bin/clang++"
env['AR'] = mpprefix + "/libexec/llvm-" + mpclangver + "/bin/llvm-ar"
env['RANLIB'] = mpprefix + "/libexec/llvm-" + mpclangver + "/bin/llvm-ranlib"
env['AS'] = mpprefix + "/libexec/llvm-" + mpclangver + "/bin/llvm-as"
env.Append(CPPFLAGS=['-D__MACPORTS__']) #hack to fix libvpx MM256_BROADCASTSI128_SI256 define
detect_darwin_sdk_path('osx', env)
env.Append(CCFLAGS=['-isysroot', '$MACOS_SDK_PATH'])
env.Append(LINKFLAGS=['-isysroot', '$MACOS_SDK_PATH'])
else: # osxcross build
root = os.environ.get("OSXCROSS_ROOT", 0)
basecmd = root + "/target/bin/x86_64-apple-" + env["osxcross_sdk"] + "-"
ccache_path = os.environ.get("CCACHE")
if ccache_path is None:
env['CC'] = basecmd + "cc"
env['CXX'] = basecmd + "c++"
else:
# there aren't any ccache wrappers available for OS X cross-compile,
# to enable caching we need to prepend the path to the ccache binary
env['CC'] = ccache_path + ' ' + basecmd + "cc"
env['CXX'] = ccache_path + ' ' + basecmd + "c++"
env['AR'] = basecmd + "ar"
env['RANLIB'] = basecmd + "ranlib"
env['AS'] = basecmd + "as"
env.Append(CPPFLAGS=['-D__MACPORTS__']) #hack to fix libvpx MM256_BROADCASTSI128_SI256 define
if (env["CXX"] == "clang++"):
env.Append(CPPFLAGS=['-DTYPED_METHOD_BIND'])
env["CC"] = "clang"
env["LINK"] = "clang++"
## Dependencies
if env['builtin_libtheora']:
env["x86_libtheora_opt_gcc"] = True
## Flags
env.Append(CPPPATH=['#platform/osx'])
env.Append(CPPFLAGS=['-DOSX_ENABLED', '-DUNIX_ENABLED', '-DGLES_ENABLED', '-DAPPLE_STYLE_KEYS', '-DCOREAUDIO_ENABLED', '-DCOREMIDI_ENABLED'])
env.Append(LINKFLAGS=['-framework', 'Cocoa', '-framework', 'Carbon', '-framework', 'OpenGL', '-framework', 'AGL', '-framework', 'AudioUnit', '-framework', 'CoreAudio', '-framework', 'CoreMIDI', '-lz', '-framework', 'IOKit', '-framework', 'ForceFeedback', '-framework', 'CoreVideo'])
env.Append(LIBS=['pthread'])
env.Append(CCFLAGS=['-mmacosx-version-min=10.9'])
env.Append(LINKFLAGS=['-mmacosx-version-min=10.9'])