mirror of
https://github.com/MarlinFirmware/Marlin.git
synced 2024-11-25 12:57:53 +00:00
100 lines
2.6 KiB
Python
100 lines
2.6 KiB
Python
#
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# preprocessor.py
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#
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import subprocess,os,re
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verbose = 0
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def blab(str):
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if verbose:
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print(str)
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################################################################################
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#
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# Invoke GCC to run the preprocessor and extract enabled features
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#
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preprocessor_cache = {}
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def run_preprocessor(env, fn=None):
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filename = fn or 'buildroot/share/PlatformIO/scripts/common-dependencies.h'
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if filename in preprocessor_cache:
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return preprocessor_cache[filename]
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# Process defines
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build_flags = env.get('BUILD_FLAGS')
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build_flags = env.ParseFlagsExtended(build_flags)
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cxx = search_compiler(env)
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cmd = ['"' + cxx + '"']
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# Build flags from board.json
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#if 'BOARD' in env:
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# cmd += [env.BoardConfig().get("build.extra_flags")]
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for s in build_flags['CPPDEFINES']:
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if isinstance(s, tuple):
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cmd += ['-D' + s[0] + '=' + str(s[1])]
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else:
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cmd += ['-D' + s]
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cmd += ['-D__MARLIN_DEPS__ -w -dM -E -x c++']
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depcmd = cmd + [ filename ]
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cmd = ' '.join(depcmd)
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blab(cmd)
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define_list = subprocess.check_output(cmd, shell=True).splitlines()
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preprocessor_cache[filename] = define_list
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return define_list
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################################################################################
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#
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# Find a compiler, considering the OS
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#
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def search_compiler(env):
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ENV_BUILD_PATH = os.path.join(env.Dictionary('PROJECT_BUILD_DIR'), env['PIOENV'])
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GCC_PATH_CACHE = os.path.join(ENV_BUILD_PATH, ".gcc_path")
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try:
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filepath = env.GetProjectOption('custom_gcc')
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blab("Getting compiler from env")
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return filepath
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except:
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pass
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if os.path.exists(GCC_PATH_CACHE):
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blab("Getting g++ path from cache")
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with open(GCC_PATH_CACHE, 'r') as f:
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return f.read()
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# Find the current platform compiler by searching the $PATH
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# which will be in a platformio toolchain bin folder
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path_regex = re.escape(env['PROJECT_PACKAGES_DIR'])
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gcc = "g++"
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if env['PLATFORM'] == 'win32':
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path_separator = ';'
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path_regex += r'.*\\bin'
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gcc += ".exe"
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else:
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path_separator = ':'
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path_regex += r'/.+/bin'
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# Search for the compiler
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for pathdir in env['ENV']['PATH'].split(path_separator):
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if not re.search(path_regex, pathdir, re.IGNORECASE):
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continue
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for filepath in os.listdir(pathdir):
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if not filepath.endswith(gcc):
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continue
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# Use entire path to not rely on env PATH
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filepath = os.path.sep.join([pathdir, filepath])
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# Cache the g++ path to no search always
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if os.path.exists(ENV_BUILD_PATH):
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blab("Caching g++ for current env")
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with open(GCC_PATH_CACHE, 'w+') as f:
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f.write(filepath)
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return filepath
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filepath = env.get('CXX')
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blab("Couldn't find a compiler! Fallback to %s" % filepath)
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return filepath
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