ardupilot/Tools/ardupilotwaf/toolchain.py

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"""
WAF Tool to select the correct toolchain based on the target archtecture.
This tool loads compiler_c and compiler_cxx, so you don't need to load them
(and you must not load them before this tool). Use the environment variable
TOOLCHAIN to define the toolchain.
Example::
def configure(cfg):
cfg.env.TOOLCHAIN = 'arm-linux-gnueabihf'
cfg.load('toolchain')
"""
from waflib import Errors, Context, Utils
from waflib.Configure import conf
from waflib.Tools import compiler_c, compiler_cxx
from waflib.Tools import clang, clangxx, gcc, gxx
from waflib.Tools import c_config
from waflib import Logs
import os
import re
@conf
def find_gxx(conf):
names = ['g++', 'c++']
if conf.env.TOOLCHAIN != 'native':
names = ['%s-%s' % (conf.env.TOOLCHAIN, n) for n in names]
cxx = conf.find_program(names, var='CXX')
conf.get_cc_version(cxx, gcc=True)
conf.env.CXX_NAME = 'gcc'
@conf
def find_gcc(conf):
names = ['gcc', 'cc']
if conf.env.TOOLCHAIN != 'native':
names = ['%s-%s' % (conf.env.TOOLCHAIN, n) for n in names]
cc = conf.find_program(names, var='CC')
conf.get_cc_version(cc, gcc=True)
conf.env.CC_NAME = 'gcc'
def _clang_cross_support(cfg):
if _clang_cross_support.called:
return
prefix = cfg.env.TOOLCHAIN + '-'
try:
cfg.find_program(prefix + 'gcc', var='CROSS_GCC')
except Errors.ConfigurationError as e:
cfg.fatal('toolchain: clang: couldn\'t find cross GCC', ex=e)
environ = dict(os.environ)
if 'TOOLCHAIN_CROSS_AR' in environ:
# avoid OS's environment to mess up toolchain path finding
del environ['TOOLCHAIN_CROSS_AR']
try:
cfg.find_program(
prefix + 'ar',
var='TOOLCHAIN_CROSS_AR',
environ=environ,
)
except Errors.ConfigurationError as e:
cfg.fatal('toolchain: clang: couldn\'t find toolchain path', ex=e)
toolchain_path = os.path.join(cfg.env.TOOLCHAIN_CROSS_AR[0], '..', '..')
toolchain_path = os.path.abspath(toolchain_path)
cfg.msg('Using toolchain path for clang', toolchain_path)
sysroot = cfg.cmd_and_log(
[cfg.env.CROSS_GCC[0], '--print-sysroot'],
quiet=Context.BOTH,
).strip()
cfg.env.CLANG_FLAGS = [
'--target=' + cfg.env.TOOLCHAIN,
'--gcc-toolchain=' + toolchain_path,
'--sysroot=' + sysroot,
'-B' + os.path.join(toolchain_path, 'bin')
]
_clang_cross_support.called = False
def _set_clang_crosscompilation_wrapper(tool_module):
original_configure = tool_module.configure
def new_configure(cfg):
if cfg.env.TOOLCHAIN == 'native':
original_configure(cfg)
return
cfg.env.stash()
try:
_clang_cross_support(cfg)
original_configure(cfg)
except Errors.ConfigurationError as e:
cfg.env.revert()
raise
else:
cfg.env.commit()
tool_module.configure = new_configure
_set_clang_crosscompilation_wrapper(clang)
_set_clang_crosscompilation_wrapper(clangxx)
def _filter_supported_c_compilers(*compilers):
for k in compiler_c.c_compiler:
l = compiler_c.c_compiler[k]
compiler_c.c_compiler[k] = [c for c in compilers if c in l]
def _filter_supported_cxx_compilers(*compilers):
for k in compiler_cxx.cxx_compiler:
l = compiler_cxx.cxx_compiler[k]
compiler_cxx.cxx_compiler[k] = [c for c in compilers if c in l]
def _set_pkgconfig_crosscompilation_wrapper(cfg):
original_validatecfg = cfg.validate_cfg
@conf
def new_validate_cfg(kw):
if not 'path' in kw:
if not cfg.env.PKGCONFIG:
cfg.find_program('%s-pkg-config' % cfg.env.TOOLCHAIN, var='PKGCONFIG')
kw['path'] = cfg.env.PKGCONFIG
original_validatecfg(kw)
cfg.validate_cfg = new_validate_cfg
def configure(cfg):
_filter_supported_c_compilers('gcc', 'clang')
_filter_supported_cxx_compilers('g++', 'clang++')
if cfg.env.TOOLCHAIN == 'native':
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cfg.load('compiler_cxx compiler_c')
if not cfg.options.disable_gccdeps:
cfg.load('gccdeps')
return
cfg.msg('Using toolchain', cfg.env.TOOLCHAIN)
_set_pkgconfig_crosscompilation_wrapper(cfg)
cfg.find_program('%s-ar' % cfg.env.TOOLCHAIN, var='AR', quiet=True)
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cfg.load('compiler_cxx compiler_c')
if not cfg.options.disable_gccdeps:
cfg.load('gccdeps')
if cfg.env.COMPILER_CC == 'clang':
cfg.env.CFLAGS += cfg.env.CLANG_FLAGS
cfg.env.LINKFLAGS_cprogram += cfg.env.CLANG_FLAGS
if cfg.env.COMPILER_CXX == 'clang++':
cfg.env.CXXFLAGS += cfg.env.CLANG_FLAGS
cfg.env.LINKFLAGS_cxxprogram += cfg.env.CLANG_FLAGS