mirror of
https://github.com/godotengine/godot.git
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a2a5793e13
Fix regular macOS build by passing -isysroot to compiler so correct system headers are found
655 lines
26 KiB
Python
655 lines
26 KiB
Python
import os
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import os.path
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import sys
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import re
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import glob
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import string
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import datetime
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import subprocess
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from compat import iteritems, isbasestring
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def add_source_files(self, sources, filetype, lib_env=None, shared=False):
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if isbasestring(filetype):
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dir_path = self.Dir('.').abspath
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filetype = sorted(glob.glob(dir_path + "/" + filetype))
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for path in filetype:
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sources.append(self.Object(path))
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def disable_warnings(self):
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# 'self' is the environment
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if self.msvc:
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# We have to remove existing warning level defines before appending /w,
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# otherwise we get: "warning D9025 : overriding '/W3' with '/w'"
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warn_flags = ['/Wall', '/W4', '/W3', '/W2', '/W1', '/WX']
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self['CCFLAGS'] = [x for x in self['CCFLAGS'] if not x in warn_flags]
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self.Append(CCFLAGS=['/w'])
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else:
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self.Append(CCFLAGS=['-w'])
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def add_module_version_string(self,s):
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self.module_version_string += "." + s
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def update_version(module_version_string=""):
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build_name = "custom_build"
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if os.getenv("BUILD_NAME") != None:
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build_name = os.getenv("BUILD_NAME")
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print("Using custom build name: " + build_name)
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import version
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# NOTE: It is safe to generate this file here, since this is still executed serially
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f = open("core/version_generated.gen.h", "w")
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f.write("#define VERSION_SHORT_NAME \"" + str(version.short_name) + "\"\n")
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f.write("#define VERSION_NAME \"" + str(version.name) + "\"\n")
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f.write("#define VERSION_MAJOR " + str(version.major) + "\n")
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f.write("#define VERSION_MINOR " + str(version.minor) + "\n")
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if hasattr(version, 'patch'):
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f.write("#define VERSION_PATCH " + str(version.patch) + "\n")
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f.write("#define VERSION_STATUS \"" + str(version.status) + "\"\n")
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f.write("#define VERSION_BUILD \"" + str(build_name) + "\"\n")
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f.write("#define VERSION_MODULE_CONFIG \"" + str(version.module_config) + module_version_string + "\"\n")
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f.write("#define VERSION_YEAR " + str(2018) + "\n")
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f.close()
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# NOTE: It is safe to generate this file here, since this is still executed serially
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fhash = open("core/version_hash.gen.h", "w")
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githash = ""
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if os.path.isfile(".git/HEAD"):
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head = open(".git/HEAD", "r").readline().strip()
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if head.startswith("ref: "):
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head = ".git/" + head[5:]
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if os.path.isfile(head):
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githash = open(head, "r").readline().strip()
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else:
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githash = head
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fhash.write("#define VERSION_HASH \"" + githash + "\"")
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fhash.close()
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def parse_cg_file(fname, uniforms, sizes, conditionals):
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fs = open(fname, "r")
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line = fs.readline()
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while line:
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if re.match(r"^\s*uniform", line):
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res = re.match(r"uniform ([\d\w]*) ([\d\w]*)")
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type = res.groups(1)
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name = res.groups(2)
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uniforms.append(name)
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if type.find("texobj") != -1:
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sizes.append(1)
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else:
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t = re.match(r"float(\d)x(\d)", type)
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if t:
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sizes.append(int(t.groups(1)) * int(t.groups(2)))
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else:
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t = re.match(r"float(\d)", type)
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sizes.append(int(t.groups(1)))
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if line.find("[branch]") != -1:
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conditionals.append(name)
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line = fs.readline()
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fs.close()
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def detect_modules():
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module_list = []
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includes_cpp = ""
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register_cpp = ""
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unregister_cpp = ""
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files = glob.glob("modules/*")
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files.sort() # so register_module_types does not change that often, and also plugins are registered in alphabetic order
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for x in files:
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if not os.path.isdir(x):
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continue
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if not os.path.exists(x + "/config.py"):
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continue
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x = x.replace("modules/", "") # rest of world
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x = x.replace("modules\\", "") # win32
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module_list.append(x)
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try:
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with open("modules/" + x + "/register_types.h"):
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includes_cpp += '#include "modules/' + x + '/register_types.h"\n'
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register_cpp += '#ifdef MODULE_' + x.upper() + '_ENABLED\n'
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register_cpp += '\tregister_' + x + '_types();\n'
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register_cpp += '#endif\n'
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unregister_cpp += '#ifdef MODULE_' + x.upper() + '_ENABLED\n'
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unregister_cpp += '\tunregister_' + x + '_types();\n'
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unregister_cpp += '#endif\n'
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except IOError:
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pass
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modules_cpp = """
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// modules.cpp - THIS FILE IS GENERATED, DO NOT EDIT!!!!!!!
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#include "register_module_types.h"
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""" + includes_cpp + """
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void register_module_types() {
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""" + register_cpp + """
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}
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void unregister_module_types() {
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""" + unregister_cpp + """
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}
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"""
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# NOTE: It is safe to generate this file here, since this is still executed serially
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with open("modules/register_module_types.gen.cpp", "w") as f:
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f.write(modules_cpp)
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return module_list
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def win32_spawn(sh, escape, cmd, args, env):
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import subprocess
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newargs = ' '.join(args[1:])
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cmdline = cmd + " " + newargs
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startupinfo = subprocess.STARTUPINFO()
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for e in env:
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if type(env[e]) != type(""):
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env[e] = str(env[e])
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proc = subprocess.Popen(cmdline, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, startupinfo=startupinfo, shell=False, env=env)
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data, err = proc.communicate()
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rv = proc.wait()
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if rv:
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print("=====")
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print(err)
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print("=====")
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return rv
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"""
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def win32_spawn(sh, escape, cmd, args, spawnenv):
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import win32file
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import win32event
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import win32process
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import win32security
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for var in spawnenv:
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spawnenv[var] = spawnenv[var].encode('ascii', 'replace')
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sAttrs = win32security.SECURITY_ATTRIBUTES()
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StartupInfo = win32process.STARTUPINFO()
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newargs = ' '.join(map(escape, args[1:]))
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cmdline = cmd + " " + newargs
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# check for any special operating system commands
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if cmd == 'del':
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for arg in args[1:]:
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win32file.DeleteFile(arg)
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exit_code = 0
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else:
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# otherwise execute the command.
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hProcess, hThread, dwPid, dwTid = win32process.CreateProcess(None, cmdline, None, None, 1, 0, spawnenv, None, StartupInfo)
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win32event.WaitForSingleObject(hProcess, win32event.INFINITE)
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exit_code = win32process.GetExitCodeProcess(hProcess)
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win32file.CloseHandle(hProcess);
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win32file.CloseHandle(hThread);
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return exit_code
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"""
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def android_add_flat_dir(self, dir):
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if (dir not in self.android_flat_dirs):
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self.android_flat_dirs.append(dir)
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def android_add_maven_repository(self, url):
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if (url not in self.android_maven_repos):
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self.android_maven_repos.append(url)
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def android_add_dependency(self, depline):
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if (depline not in self.android_dependencies):
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self.android_dependencies.append(depline)
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def android_add_java_dir(self, subpath):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + subpath
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if (base_path not in self.android_java_dirs):
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self.android_java_dirs.append(base_path)
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def android_add_res_dir(self, subpath):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + subpath
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if (base_path not in self.android_res_dirs):
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self.android_res_dirs.append(base_path)
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def android_add_asset_dir(self, subpath):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + subpath
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if (base_path not in self.android_asset_dirs):
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self.android_asset_dirs.append(base_path)
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def android_add_aidl_dir(self, subpath):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + subpath
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if (base_path not in self.android_aidl_dirs):
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self.android_aidl_dirs.append(base_path)
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def android_add_jni_dir(self, subpath):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + subpath
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if (base_path not in self.android_jni_dirs):
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self.android_jni_dirs.append(base_path)
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def android_add_gradle_plugin(self, plugin):
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if (plugin not in self.android_gradle_plugins):
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self.android_gradle_plugins.append(plugin)
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def android_add_gradle_classpath(self, classpath):
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if (classpath not in self.android_gradle_classpath):
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self.android_gradle_classpath.append(classpath)
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def android_add_default_config(self, config):
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if (config not in self.android_default_config):
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self.android_default_config.append(config)
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def android_add_to_manifest(self, file):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + file
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with open(base_path, "r") as f:
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self.android_manifest_chunk += f.read()
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def android_add_to_permissions(self, file):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + file
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with open(base_path, "r") as f:
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self.android_permission_chunk += f.read()
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def android_add_to_attributes(self, file):
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base_path = self.Dir(".").abspath + "/modules/" + self.current_module + "/" + file
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with open(base_path, "r") as f:
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self.android_appattributes_chunk += f.read()
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def disable_module(self):
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self.disabled_modules.append(self.current_module)
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def use_windows_spawn_fix(self, platform=None):
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if (os.name != "nt"):
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return # not needed, only for windows
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# On Windows, due to the limited command line length, when creating a static library
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# from a very high number of objects SCons will invoke "ar" once per object file;
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# that makes object files with same names to be overwritten so the last wins and
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# the library looses symbols defined by overwritten objects.
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# By enabling quick append instead of the default mode (replacing), libraries will
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# got built correctly regardless the invocation strategy.
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# Furthermore, since SCons will rebuild the library from scratch when an object file
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# changes, no multiple versions of the same object file will be present.
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self.Replace(ARFLAGS='q')
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def mySubProcess(cmdline, env):
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startupinfo = subprocess.STARTUPINFO()
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startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
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proc = subprocess.Popen(cmdline, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, startupinfo=startupinfo, shell=False, env=env)
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data, err = proc.communicate()
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rv = proc.wait()
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if rv:
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print("=====")
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print(err)
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print("=====")
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return rv
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def mySpawn(sh, escape, cmd, args, env):
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newargs = ' '.join(args[1:])
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cmdline = cmd + " " + newargs
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rv = 0
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env = {str(key): str(value) for key, value in iteritems(env)}
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if len(cmdline) > 32000 and cmd.endswith("ar"):
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cmdline = cmd + " " + args[1] + " " + args[2] + " "
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for i in range(3, len(args)):
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rv = mySubProcess(cmdline + args[i], env)
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if rv:
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break
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else:
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rv = mySubProcess(cmdline, env)
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return rv
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self['SPAWN'] = mySpawn
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def split_lib(self, libname, src_list = None, env_lib = None):
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env = self
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num = 0
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cur_base = ""
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max_src = 64
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list = []
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lib_list = []
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if src_list is None:
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src_list = getattr(env, libname + "_sources")
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if type(env_lib) == type(None):
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env_lib = env
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for f in src_list:
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fname = ""
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if type(f) == type(""):
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fname = env.File(f).path
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else:
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fname = env.File(f)[0].path
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fname = fname.replace("\\", "/")
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base = string.join(fname.split("/")[:2], "/")
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if base != cur_base and len(list) > max_src:
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if num > 0:
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lib = env_lib.add_library(libname + str(num), list)
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lib_list.append(lib)
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list = []
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num = num + 1
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cur_base = base
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list.append(f)
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lib = env_lib.add_library(libname + str(num), list)
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lib_list.append(lib)
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if len(lib_list) > 0:
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if os.name == 'posix' and sys.platform == 'msys':
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env.Replace(ARFLAGS=['rcsT'])
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lib = env_lib.add_library(libname + "_collated", lib_list)
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lib_list = [lib]
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lib_base = []
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env_lib.add_source_files(lib_base, "*.cpp")
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lib = env_lib.add_library(libname, lib_base)
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lib_list.insert(0, lib)
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env.Prepend(LIBS=lib_list)
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def save_active_platforms(apnames, ap):
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for x in ap:
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names = ['logo']
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if os.path.isfile(x + "/run_icon.png"):
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names.append('run_icon')
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for name in names:
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pngf = open(x + "/" + name + ".png", "rb")
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b = pngf.read(1)
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str = " /* AUTOGENERATED FILE, DO NOT EDIT */ \n"
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str += " static const unsigned char _" + x[9:] + "_" + name + "[]={"
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while len(b) == 1:
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str += hex(ord(b))
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b = pngf.read(1)
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if (len(b) == 1):
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str += ","
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str += "};\n"
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pngf.close()
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# NOTE: It is safe to generate this file here, since this is still executed serially
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wf = x + "/" + name + ".gen.h"
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with open(wf, "w") as pngw:
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pngw.write(str)
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def no_verbose(sys, env):
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colors = {}
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# Colors are disabled in non-TTY environments such as pipes. This means
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# that if output is redirected to a file, it will not contain color codes
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if sys.stdout.isatty():
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colors['cyan'] = '\033[96m'
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colors['purple'] = '\033[95m'
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colors['blue'] = '\033[94m'
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colors['green'] = '\033[92m'
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colors['yellow'] = '\033[93m'
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colors['red'] = '\033[91m'
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colors['end'] = '\033[0m'
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else:
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colors['cyan'] = ''
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colors['purple'] = ''
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colors['blue'] = ''
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colors['green'] = ''
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colors['yellow'] = ''
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colors['red'] = ''
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colors['end'] = ''
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compile_source_message = '%sCompiling %s==> %s$SOURCE%s' % (colors['blue'], colors['purple'], colors['yellow'], colors['end'])
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java_compile_source_message = '%sCompiling %s==> %s$SOURCE%s' % (colors['blue'], colors['purple'], colors['yellow'], colors['end'])
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compile_shared_source_message = '%sCompiling shared %s==> %s$SOURCE%s' % (colors['blue'], colors['purple'], colors['yellow'], colors['end'])
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link_program_message = '%sLinking Program %s==> %s$TARGET%s' % (colors['red'], colors['purple'], colors['yellow'], colors['end'])
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link_library_message = '%sLinking Static Library %s==> %s$TARGET%s' % (colors['red'], colors['purple'], colors['yellow'], colors['end'])
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ranlib_library_message = '%sRanlib Library %s==> %s$TARGET%s' % (colors['red'], colors['purple'], colors['yellow'], colors['end'])
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link_shared_library_message = '%sLinking Shared Library %s==> %s$TARGET%s' % (colors['red'], colors['purple'], colors['yellow'], colors['end'])
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java_library_message = '%sCreating Java Archive %s==> %s$TARGET%s' % (colors['red'], colors['purple'], colors['yellow'], colors['end'])
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env.Append(CXXCOMSTR=[compile_source_message])
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env.Append(CCCOMSTR=[compile_source_message])
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env.Append(SHCCCOMSTR=[compile_shared_source_message])
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env.Append(SHCXXCOMSTR=[compile_shared_source_message])
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env.Append(ARCOMSTR=[link_library_message])
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env.Append(RANLIBCOMSTR=[ranlib_library_message])
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env.Append(SHLINKCOMSTR=[link_shared_library_message])
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env.Append(LINKCOMSTR=[link_program_message])
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env.Append(JARCOMSTR=[java_library_message])
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env.Append(JAVACCOMSTR=[java_compile_source_message])
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def detect_visual_c_compiler_version(tools_env):
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# tools_env is the variable scons uses to call tools that execute tasks, SCons's env['ENV'] that executes tasks...
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# (see the SCons documentation for more information on what it does)...
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# in order for this function to be well encapsulated i choose to force it to receive SCons's TOOLS env (env['ENV']
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# and not scons setup environment (env)... so make sure you call the right environment on it or it will fail to detect
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# the proper vc version that will be called
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# There is no flag to give to visual c compilers to set the architecture, ie scons bits argument (32,64,ARM etc)
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# There are many different cl.exe files that are run, and each one compiles & links to a different architecture
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# As far as I know, the only way to figure out what compiler will be run when Scons calls cl.exe via Program()
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# is to check the PATH variable and figure out which one will be called first. Code below does that and returns:
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# the following string values:
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# "" Compiler not detected
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# "amd64" Native 64 bit compiler
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# "amd64_x86" 64 bit Cross Compiler for 32 bit
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# "x86" Native 32 bit compiler
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# "x86_amd64" 32 bit Cross Compiler for 64 bit
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# There are other architectures, but Godot does not support them currently, so this function does not detect arm/amd64_arm
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# and similar architectures/compilers
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# Set chosen compiler to "not detected"
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vc_chosen_compiler_index = -1
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vc_chosen_compiler_str = ""
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# Start with Pre VS 2017 checks which uses VCINSTALLDIR:
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if 'VCINSTALLDIR' in tools_env:
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# print("Checking VCINSTALLDIR")
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# find() works with -1 so big ifs below are needed... the simplest solution, in fact
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# First test if amd64 and amd64_x86 compilers are present in the path
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vc_amd64_compiler_detection_index = tools_env["PATH"].find(tools_env["VCINSTALLDIR"] + "BIN\\amd64;")
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if(vc_amd64_compiler_detection_index > -1):
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vc_chosen_compiler_index = vc_amd64_compiler_detection_index
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vc_chosen_compiler_str = "amd64"
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vc_amd64_x86_compiler_detection_index = tools_env["PATH"].find(tools_env["VCINSTALLDIR"] + "BIN\\amd64_x86;")
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if(vc_amd64_x86_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_amd64_x86_compiler_detection_index)):
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vc_chosen_compiler_index = vc_amd64_x86_compiler_detection_index
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vc_chosen_compiler_str = "amd64_x86"
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# Now check the 32 bit compilers
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vc_x86_compiler_detection_index = tools_env["PATH"].find(tools_env["VCINSTALLDIR"] + "BIN;")
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if(vc_x86_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_x86_compiler_detection_index)):
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vc_chosen_compiler_index = vc_x86_compiler_detection_index
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vc_chosen_compiler_str = "x86"
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vc_x86_amd64_compiler_detection_index = tools_env["PATH"].find(tools_env['VCINSTALLDIR'] + "BIN\\x86_amd64;")
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if(vc_x86_amd64_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_x86_amd64_compiler_detection_index)):
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vc_chosen_compiler_index = vc_x86_amd64_compiler_detection_index
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vc_chosen_compiler_str = "x86_amd64"
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# and for VS 2017 and newer we check VCTOOLSINSTALLDIR:
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if 'VCTOOLSINSTALLDIR' in tools_env:
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# Newer versions have a different path available
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vc_amd64_compiler_detection_index = tools_env["PATH"].upper().find(tools_env['VCTOOLSINSTALLDIR'].upper() + "BIN\\HOSTX64\\X64;")
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if(vc_amd64_compiler_detection_index > -1):
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vc_chosen_compiler_index = vc_amd64_compiler_detection_index
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vc_chosen_compiler_str = "amd64"
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vc_amd64_x86_compiler_detection_index = tools_env["PATH"].upper().find(tools_env['VCTOOLSINSTALLDIR'].upper() + "BIN\\HOSTX64\\X86;")
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if(vc_amd64_x86_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_amd64_x86_compiler_detection_index)):
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vc_chosen_compiler_index = vc_amd64_x86_compiler_detection_index
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vc_chosen_compiler_str = "amd64_x86"
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vc_x86_compiler_detection_index = tools_env["PATH"].upper().find(tools_env['VCTOOLSINSTALLDIR'].upper() + "BIN\\HOSTX86\\X86;")
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if(vc_x86_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_x86_compiler_detection_index)):
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vc_chosen_compiler_index = vc_x86_compiler_detection_index
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vc_chosen_compiler_str = "x86"
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vc_x86_amd64_compiler_detection_index = tools_env["PATH"].upper().find(tools_env['VCTOOLSINSTALLDIR'].upper() + "BIN\\HOSTX86\\X64;")
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if(vc_x86_amd64_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_x86_amd64_compiler_detection_index)):
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vc_chosen_compiler_index = vc_x86_amd64_compiler_detection_index
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vc_chosen_compiler_str = "x86_amd64"
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return vc_chosen_compiler_str
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def find_visual_c_batch_file(env):
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from SCons.Tool.MSCommon.vc import get_default_version, get_host_target, find_batch_file
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version = get_default_version(env)
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(host_platform, target_platform,req_target_platform) = get_host_target(env)
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return find_batch_file(env, version, host_platform, target_platform)[0]
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def generate_cpp_hint_file(filename):
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if os.path.isfile(filename):
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# Don't overwrite an existing hint file since the user may have customized it.
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pass
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else:
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try:
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with open(filename, "w") as fd:
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fd.write("#define GDCLASS(m_class, m_inherits)\n")
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except IOError:
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print("Could not write cpp.hint file.")
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def generate_vs_project(env, num_jobs):
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batch_file = find_visual_c_batch_file(env)
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if batch_file:
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def build_commandline(commands):
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common_build_prefix = ['cmd /V /C set "plat=$(PlatformTarget)"',
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'(if "$(PlatformTarget)"=="x64" (set "plat=x86_amd64"))',
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'set "tools=yes"',
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'(if "$(Configuration)"=="release" (set "tools=no"))',
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'call "' + batch_file + '" !plat!']
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result = " ^& ".join(common_build_prefix + [commands])
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return result
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env.AddToVSProject(env.core_sources)
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env.AddToVSProject(env.main_sources)
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env.AddToVSProject(env.modules_sources)
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env.AddToVSProject(env.scene_sources)
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env.AddToVSProject(env.servers_sources)
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env.AddToVSProject(env.editor_sources)
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# windows allows us to have spaces in paths, so we need
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# to double quote off the directory. However, the path ends
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# in a backslash, so we need to remove this, lest it escape the
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# last double quote off, confusing MSBuild
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env['MSVSBUILDCOM'] = build_commandline('scons --directory="$(ProjectDir.TrimEnd(\'\\\'))" platform=windows progress=no target=$(Configuration) tools=!tools! -j' + str(num_jobs))
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env['MSVSREBUILDCOM'] = build_commandline('scons --directory="$(ProjectDir.TrimEnd(\'\\\'))" platform=windows progress=no target=$(Configuration) tools=!tools! vsproj=yes -j' + str(num_jobs))
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env['MSVSCLEANCOM'] = build_commandline('scons --directory="$(ProjectDir.TrimEnd(\'\\\'))" --clean platform=windows progress=no target=$(Configuration) tools=!tools! -j' + str(num_jobs))
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# This version information (Win32, x64, Debug, Release, Release_Debug seems to be
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# required for Visual Studio to understand that it needs to generate an NMAKE
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# project. Do not modify without knowing what you are doing.
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debug_variants = ['debug|Win32'] + ['debug|x64']
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release_variants = ['release|Win32'] + ['release|x64']
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release_debug_variants = ['release_debug|Win32'] + ['release_debug|x64']
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variants = debug_variants + release_variants + release_debug_variants
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debug_targets = ['bin\\godot.windows.tools.32.exe'] + ['bin\\godot.windows.tools.64.exe']
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release_targets = ['bin\\godot.windows.opt.32.exe'] + ['bin\\godot.windows.opt.64.exe']
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release_debug_targets = ['bin\\godot.windows.opt.tools.32.exe'] + ['bin\\godot.windows.opt.tools.64.exe']
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targets = debug_targets + release_targets + release_debug_targets
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if not env.get('MSVS'):
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env['MSVS']['PROJECTSUFFIX'] = '.vcxproj'
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env['MSVS']['SOLUTIONSUFFIX'] = '.sln'
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env.MSVSProject(
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target=['#godot' + env['MSVSPROJECTSUFFIX']],
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incs=env.vs_incs,
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srcs=env.vs_srcs,
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runfile=targets,
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buildtarget=targets,
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auto_build_solution=1,
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variant=variants)
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else:
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print("Could not locate Visual Studio batch file for setting up the build environment. Not generating VS project.")
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def precious_program(env, program, sources, **args):
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program = env.ProgramOriginal(program, sources, **args)
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env.Precious(program)
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return program
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def add_shared_library(env, name, sources, **args):
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library = env.SharedLibrary(name, sources, **args)
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env.NoCache(library)
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return library
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def add_library(env, name, sources, **args):
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library = env.Library(name, sources, **args)
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env.NoCache(library)
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return library
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def add_program(env, name, sources, **args):
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program = env.Program(name, sources, **args)
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env.NoCache(program)
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return program
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def CommandNoCache(env, target, sources, command, **args):
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result = env.Command(target, sources, command, **args)
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env.NoCache(result)
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return result
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def detect_darwin_sdk_path(platform, env):
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sdk_name = ''
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if platform == 'osx':
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sdk_name = 'macosx'
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var_name = 'MACOS_SDK_PATH'
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elif platform == 'iphone':
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sdk_name = 'iphoneos'
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var_name = 'IPHONESDK'
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elif platform == 'iphonesimulator':
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sdk_name = 'iphonesimulator'
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var_name = 'IPHONESDK'
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else:
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raise Exception("Invalid platform argument passed to detect_darwin_sdk_path")
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if not env[var_name]:
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try:
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sdk_path = subprocess.check_output(['xcrun', '--sdk', sdk_name, '--show-sdk-path']).strip()
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if sdk_path:
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env[var_name] = sdk_path
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except (subprocess.CalledProcessError, OSError) as e:
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print("Failed to find SDK path while running xcrun --sdk {} --show-sdk-path.".format(sdk_name))
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raise
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