godot-cpp/SConstruct
Fabio Alessandrelli dcc52f4321 Library SCons boilerplate to build projects.
Works by executing project `SConstruct`s file in a cloned env (a bit
like Godot does for modules) so you don't have to worry about platform
and toolchain setup.

Convert the project test file to work as submodule, add it to CI

Run with:

```
scons build_projects=test,/path/to/other/project
```
2022-02-10 01:44:48 +01:00

507 lines
17 KiB
Python

#!/usr/bin/env python
import os
import sys
import subprocess
if sys.version_info < (3,):
def decode_utf8(x):
return x
else:
import codecs
def decode_utf8(x):
return codecs.utf_8_decode(x)[0]
# Workaround for MinGW. See:
# http://www.scons.org/wiki/LongCmdLinesOnWin32
if os.name == "nt":
import subprocess
def mySubProcess(cmdline, env):
# print "SPAWNED : " + cmdline
startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
proc = subprocess.Popen(
cmdline,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
startupinfo=startupinfo,
shell=False,
env=env,
)
data, err = proc.communicate()
rv = proc.wait()
if rv:
print("=====")
print(err.decode("utf-8"))
print("=====")
return rv
def mySpawn(sh, escape, cmd, args, env):
newargs = " ".join(args[1:])
cmdline = cmd + " " + newargs
rv = 0
if len(cmdline) > 32000 and cmd.endswith("ar"):
cmdline = cmd + " " + args[1] + " " + args[2] + " "
for i in range(3, len(args)):
rv = mySubProcess(cmdline + args[i], env)
if rv:
break
else:
rv = mySubProcess(cmdline, env)
return rv
def add_sources(sources, dir, extension):
for f in os.listdir(dir):
if f.endswith("." + extension):
sources.append(dir + "/" + f)
# Try to detect the host platform automatically.
# This is used if no `platform` argument is passed
if sys.platform.startswith("linux"):
host_platform = "linux"
elif sys.platform.startswith("freebsd"):
host_platform = "freebsd"
elif sys.platform == "darwin":
host_platform = "osx"
elif sys.platform == "win32" or sys.platform == "msys":
host_platform = "windows"
else:
raise ValueError("Could not detect platform automatically, please specify with platform=<platform>")
env = Environment(ENV=os.environ)
is64 = sys.maxsize > 2 ** 32
if (
env["TARGET_ARCH"] == "amd64"
or env["TARGET_ARCH"] == "emt64"
or env["TARGET_ARCH"] == "x86_64"
or env["TARGET_ARCH"] == "arm64-v8a"
):
is64 = True
opts = Variables([], ARGUMENTS)
opts.Add(
EnumVariable(
"platform",
"Target platform",
host_platform,
allowed_values=("linux", "freebsd", "osx", "windows", "android", "ios", "javascript"),
ignorecase=2,
)
)
opts.Add(EnumVariable("bits", "Target platform bits", "64" if is64 else "32", ("32", "64")))
opts.Add(BoolVariable("use_llvm", "Use the LLVM compiler - only effective when targeting Linux or FreeBSD", False))
opts.Add(BoolVariable("use_mingw", "Use the MinGW compiler instead of MSVC - only effective on Windows", False))
# Must be the same setting as used for cpp_bindings
opts.Add(EnumVariable("target", "Compilation target", "debug", allowed_values=("debug", "release"), ignorecase=2))
opts.Add(
PathVariable(
"headers_dir", "Path to the directory containing Godot headers", "godot-headers", PathVariable.PathIsDir
)
)
opts.Add(PathVariable("custom_api_file", "Path to a custom JSON API file", None, PathVariable.PathIsFile))
opts.Add(
EnumVariable(
"generate_bindings",
"Generate GDNative API bindings",
"auto",
allowed_values=["yes", "no", "auto", "true"],
ignorecase=2,
)
)
opts.Add(EnumVariable("android_arch", "Target Android architecture", "armv7", ["armv7", "arm64v8", "x86", "x86_64"]))
opts.Add("macos_deployment_target", "macOS deployment target", "default")
opts.Add("macos_sdk_path", "macOS SDK path", "")
opts.Add(EnumVariable("macos_arch", "Target macOS architecture", "universal", ["universal", "x86_64", "arm64"]))
opts.Add(EnumVariable("ios_arch", "Target iOS architecture", "arm64", ["armv7", "arm64", "x86_64"]))
opts.Add(BoolVariable("ios_simulator", "Target iOS Simulator", False))
opts.Add(
"IPHONEPATH",
"Path to iPhone toolchain",
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain",
)
opts.Add(
"android_api_level",
"Target Android API level",
"18" if ARGUMENTS.get("android_arch", "armv7") in ["armv7", "x86"] else "21",
)
opts.Add(
"ANDROID_NDK_ROOT",
"Path to your Android NDK installation. By default, uses ANDROID_NDK_ROOT from your defined environment variables.",
os.environ.get("ANDROID_NDK_ROOT", None),
)
opts.Add(BoolVariable("generate_template_get_node", "Generate a template version of the Node class's get_node.", True))
opts.Add(BoolVariable("build_library", "Build the godot-cpp library.", True))
opts.Add("build_projects", "List of projects to build (comma-separated list of paths).", "")
opts.Update(env)
Help(opts.GenerateHelpText(env))
# Detect and print a warning listing unknown SCons variables to ease troubleshooting.
unknown = opts.UnknownVariables()
if unknown:
print("WARNING: Unknown SCons variables were passed and will be ignored:")
for item in unknown.items():
print(" " + item[0] + "=" + item[1])
# This makes sure to keep the session environment variables on Windows.
# This way, you can run SCons in a Visual Studio 2017 prompt and it will find
# all the required tools
if host_platform == "windows" and env["platform"] != "android":
if env["bits"] == "64":
env = Environment(TARGET_ARCH="amd64")
elif env["bits"] == "32":
env = Environment(TARGET_ARCH="x86")
opts.Update(env)
# Require C++17
if host_platform == "windows" and env["platform"] == "windows" and not env["use_mingw"]:
# MSVC
env.Append(CCFLAGS=["/std:c++17"])
else:
env.Append(CCFLAGS=["-std=c++17"])
if env["target"] == "debug":
env.Append(CPPDEFINES=["DEBUG_ENABLED", "DEBUG_METHODS_ENABLED"])
if env["platform"] == "linux" or env["platform"] == "freebsd":
if env["use_llvm"]:
env["CXX"] = "clang++"
env.Append(CCFLAGS=["-fPIC", "-Wwrite-strings"])
env.Append(LINKFLAGS=["-Wl,-R,'$$ORIGIN'"])
if env["target"] == "debug":
env.Append(CCFLAGS=["-Og", "-g"])
elif env["target"] == "release":
env.Append(CCFLAGS=["-O3"])
if env["bits"] == "64":
env.Append(CCFLAGS=["-m64"])
env.Append(LINKFLAGS=["-m64"])
elif env["bits"] == "32":
env.Append(CCFLAGS=["-m32"])
env.Append(LINKFLAGS=["-m32"])
elif env["platform"] == "osx":
# Use Clang on macOS by default
env["CXX"] = "clang++"
if env["bits"] == "32":
raise ValueError("Only 64-bit builds are supported for the macOS target.")
if env["macos_arch"] == "universal":
env.Append(LINKFLAGS=["-arch", "x86_64", "-arch", "arm64"])
env.Append(CCFLAGS=["-arch", "x86_64", "-arch", "arm64"])
else:
env.Append(LINKFLAGS=["-arch", env["macos_arch"]])
env.Append(CCFLAGS=["-arch", env["macos_arch"]])
if env["macos_deployment_target"] != "default":
env.Append(CCFLAGS=["-mmacosx-version-min=" + env["macos_deployment_target"]])
env.Append(LINKFLAGS=["-mmacosx-version-min=" + env["macos_deployment_target"]])
if env["macos_sdk_path"]:
env.Append(CCFLAGS=["-isysroot", env["macos_sdk_path"]])
env.Append(LINKFLAGS=["-isysroot", env["macos_sdk_path"]])
env.Append(
LINKFLAGS=[
"-framework",
"Cocoa",
"-Wl,-undefined,dynamic_lookup",
]
)
if env["target"] == "debug":
env.Append(CCFLAGS=["-Og", "-g"])
elif env["target"] == "release":
env.Append(CCFLAGS=["-O3"])
elif env["platform"] == "ios":
if env["ios_simulator"]:
sdk_name = "iphonesimulator"
env.Append(CCFLAGS=["-mios-simulator-version-min=10.0"])
env["LIBSUFFIX"] = ".simulator" + env["LIBSUFFIX"]
else:
sdk_name = "iphoneos"
env.Append(CCFLAGS=["-miphoneos-version-min=10.0"])
try:
sdk_path = decode_utf8(subprocess.check_output(["xcrun", "--sdk", sdk_name, "--show-sdk-path"]).strip())
except (subprocess.CalledProcessError, OSError):
raise ValueError("Failed to find SDK path while running xcrun --sdk {} --show-sdk-path.".format(sdk_name))
compiler_path = env["IPHONEPATH"] + "/usr/bin/"
env["ENV"]["PATH"] = env["IPHONEPATH"] + "/Developer/usr/bin/:" + env["ENV"]["PATH"]
env["CC"] = compiler_path + "clang"
env["CXX"] = compiler_path + "clang++"
env["AR"] = compiler_path + "ar"
env["RANLIB"] = compiler_path + "ranlib"
env["SHLIBSUFFIX"] = ".dylib"
env.Append(CCFLAGS=["-arch", env["ios_arch"], "-isysroot", sdk_path])
env.Append(
LINKFLAGS=[
"-arch",
env["ios_arch"],
"-Wl,-undefined,dynamic_lookup",
"-isysroot",
sdk_path,
"-F" + sdk_path,
]
)
if env["target"] == "debug":
env.Append(CCFLAGS=["-Og", "-g"])
elif env["target"] == "release":
env.Append(CCFLAGS=["-O3"])
elif env["platform"] == "windows":
if host_platform == "windows" and not env["use_mingw"]:
# MSVC
env.Append(CPPDEFINES=["TYPED_METHOD_BIND"])
env.Append(LINKFLAGS=["/WX"])
if env["target"] == "debug":
env.Append(CCFLAGS=["/Z7", "/Od", "/EHsc", "/D_DEBUG", "/MDd"])
elif env["target"] == "release":
env.Append(CCFLAGS=["/O2", "/EHsc", "/DNDEBUG", "/MD"])
elif host_platform == "linux" or host_platform == "freebsd" or host_platform == "osx":
# Cross-compilation using MinGW
if env["bits"] == "64":
env["CXX"] = "x86_64-w64-mingw32-g++"
env["AR"] = "x86_64-w64-mingw32-ar"
env["RANLIB"] = "x86_64-w64-mingw32-ranlib"
env["LINK"] = "x86_64-w64-mingw32-g++"
elif env["bits"] == "32":
env["CXX"] = "i686-w64-mingw32-g++"
env["AR"] = "i686-w64-mingw32-ar"
env["RANLIB"] = "i686-w64-mingw32-ranlib"
env["LINK"] = "i686-w64-mingw32-g++"
elif host_platform == "windows" and env["use_mingw"]:
# Don't Clone the environment. Because otherwise, SCons will pick up msvc stuff.
env = Environment(ENV=os.environ, tools=["mingw"])
opts.Update(env)
# Still need to use C++17.
env.Append(CCFLAGS=["-std=c++17"])
# Don't want lib prefixes
env["IMPLIBPREFIX"] = ""
env["SHLIBPREFIX"] = ""
# Long line hack. Use custom spawn, quick AR append (to avoid files with the same names to override each other).
env["SPAWN"] = mySpawn
env.Replace(ARFLAGS=["q"])
# Native or cross-compilation using MinGW
if host_platform == "linux" or host_platform == "freebsd" or host_platform == "osx" or env["use_mingw"]:
# These options are for a release build even using target=debug
env.Append(CCFLAGS=["-O3", "-Wwrite-strings"])
env.Append(
LINKFLAGS=[
"--static",
"-Wl,--no-undefined",
"-static-libgcc",
"-static-libstdc++",
]
)
elif env["platform"] == "android":
if host_platform == "windows":
# Don't Clone the environment. Because otherwise, SCons will pick up msvc stuff.
env = Environment(ENV=os.environ, tools=["mingw"])
opts.Update(env)
# Long line hack. Use custom spawn, quick AR append (to avoid files with the same names to override each other).
env["SPAWN"] = mySpawn
env.Replace(ARFLAGS=["q"])
# Verify NDK root
if not "ANDROID_NDK_ROOT" in env:
raise ValueError(
"To build for Android, ANDROID_NDK_ROOT must be defined. Please set ANDROID_NDK_ROOT to the root folder of your Android NDK installation."
)
# Validate API level
api_level = int(env["android_api_level"])
if env["android_arch"] in ["x86_64", "arm64v8"] and api_level < 21:
print("WARN: 64-bit Android architectures require an API level of at least 21; setting android_api_level=21")
env["android_api_level"] = "21"
api_level = 21
# Setup toolchain
toolchain = env["ANDROID_NDK_ROOT"] + "/toolchains/llvm/prebuilt/"
if host_platform == "windows":
toolchain += "windows"
import platform as pltfm
if pltfm.machine().endswith("64"):
toolchain += "-x86_64"
elif host_platform == "linux":
toolchain += "linux-x86_64"
elif host_platform == "osx":
toolchain += "darwin-x86_64"
env.PrependENVPath("PATH", toolchain + "/bin") # This does nothing half of the time, but we'll put it here anyways
# Get architecture info
arch_info_table = {
"armv7": {
"march": "armv7-a",
"target": "armv7a-linux-androideabi",
"tool_path": "arm-linux-androideabi",
"compiler_path": "armv7a-linux-androideabi",
"ccflags": ["-mfpu=neon"],
},
"arm64v8": {
"march": "armv8-a",
"target": "aarch64-linux-android",
"tool_path": "aarch64-linux-android",
"compiler_path": "aarch64-linux-android",
"ccflags": [],
},
"x86": {
"march": "i686",
"target": "i686-linux-android",
"tool_path": "i686-linux-android",
"compiler_path": "i686-linux-android",
"ccflags": ["-mstackrealign"],
},
"x86_64": {
"march": "x86-64",
"target": "x86_64-linux-android",
"tool_path": "x86_64-linux-android",
"compiler_path": "x86_64-linux-android",
"ccflags": [],
},
}
arch_info = arch_info_table[env["android_arch"]]
# Setup tools
env["CC"] = toolchain + "/bin/clang"
env["CXX"] = toolchain + "/bin/clang++"
env["AR"] = toolchain + "/bin/" + arch_info["tool_path"] + "-ar"
env["SHLIBSUFFIX"] = ".so"
env.Append(
CCFLAGS=["--target=" + arch_info["target"] + env["android_api_level"], "-march=" + arch_info["march"], "-fPIC"]
) # , '-fPIE', '-fno-addrsig', '-Oz'])
env.Append(CCFLAGS=arch_info["ccflags"])
env.Append(LINKFLAGS=["--target=" + arch_info["target"] + env["android_api_level"], "-march=" + arch_info["march"]])
if env["target"] == "debug":
env.Append(CCFLAGS=["-Og", "-g"])
elif env["target"] == "release":
env.Append(CCFLAGS=["-O3"])
elif env["platform"] == "javascript":
env["ENV"] = os.environ
env["CC"] = "emcc"
env["CXX"] = "em++"
env["AR"] = "emar"
env["RANLIB"] = "emranlib"
env.Append(CPPFLAGS=["-s", "SIDE_MODULE=1"])
env.Append(LINKFLAGS=["-s", "SIDE_MODULE=1"])
env["SHOBJSUFFIX"] = ".bc"
env["SHLIBSUFFIX"] = ".wasm"
# Use TempFileMunge since some AR invocations are too long for cmd.exe.
# Use POSIX-style paths, required with TempFileMunge.
env["ARCOM_POSIX"] = env["ARCOM"].replace("$TARGET", "$TARGET.posix").replace("$SOURCES", "$SOURCES.posix")
env["ARCOM"] = "${TEMPFILE(ARCOM_POSIX)}"
# All intermediate files are just LLVM bitcode.
env["OBJPREFIX"] = ""
env["OBJSUFFIX"] = ".bc"
env["PROGPREFIX"] = ""
# Program() output consists of multiple files, so specify suffixes manually at builder.
env["PROGSUFFIX"] = ""
env["LIBPREFIX"] = "lib"
env["LIBSUFFIX"] = ".a"
env["LIBPREFIXES"] = ["$LIBPREFIX"]
env["LIBSUFFIXES"] = ["$LIBSUFFIX"]
env.Replace(SHLINKFLAGS="$LINKFLAGS")
env.Replace(SHLINKFLAGS="$LINKFLAGS")
if env["target"] == "debug":
env.Append(CCFLAGS=["-O0", "-g"])
elif env["target"] == "release":
env.Append(CCFLAGS=["-O3"])
env.Append(
CPPPATH=[
".",
env["headers_dir"],
"#include",
"#gen/include",
]
)
# Generate bindings?
json_api_file = ""
if "custom_api_file" in env:
json_api_file = env["custom_api_file"]
else:
json_api_file = os.path.join(os.getcwd(), env["headers_dir"], "extension_api.json")
if env["generate_bindings"] == "auto":
# Check if generated files exist
should_generate_bindings = not os.path.isfile(os.path.join(os.getcwd(), "gen", "src", "classes", "object.cpp"))
else:
should_generate_bindings = env["generate_bindings"] in ["yes", "true"]
if should_generate_bindings:
# Actually create the bindings here
import binding_generator
binding_generator.generate_bindings(json_api_file, env["generate_template_get_node"])
# Sources to compile
sources = []
add_sources(sources, "src", "cpp")
add_sources(sources, "src/classes", "cpp")
add_sources(sources, "src/core", "cpp")
add_sources(sources, "src/variant", "cpp")
add_sources(sources, "gen/src/variant", "cpp")
add_sources(sources, "gen/src/classes", "cpp")
arch_suffix = env["bits"]
if env["platform"] == "android":
arch_suffix = env["android_arch"]
elif env["platform"] == "ios":
arch_suffix = env["ios_arch"]
elif env["platform"] == "javascript":
arch_suffix = "wasm"
elif env["platform"] == "osx":
arch_suffix = env["macos_arch"]
library = None
env["OBJSUFFIX"] = ".{}.{}.{}{}".format(env["platform"], env["target"], arch_suffix, env["OBJSUFFIX"])
library_name = "libgodot-cpp.{}.{}.{}{}".format(env["platform"], env["target"], arch_suffix, env["LIBSUFFIX"])
if env["build_library"]:
library = env.StaticLibrary(target=env.File("bin/%s" % library_name), source=sources)
Default(library)
env["SHLIBSUFFIX"] = "{}.{}.{}{}".format(env["platform"], env["target"], arch_suffix, env["SHLIBSUFFIX"])
env.Append(CPPPATH=[env.Dir(f) for f in ["gen/include", "include", "godot-headers"]])
env.Append(LIBPATH=[env.Dir("bin")])
env.Append(LIBS=library_name)
Return("env")