[SCons] Move toolchains logic to tools folder.

7 files changed, 437 insertions, 0 deletions

diff --git a/tools/android.py b/tools/android.py
new file mode 100644
index 0000000..98c3b3f
--- /dev/null
+++ b/tools/android.py
@@ -0,0 +1,110 @@
+import os
+import sys
+import my_spawn
+from SCons.Script import ARGUMENTS
+
+
+def options(opts):
+    opts.Add(
+        "android_api_level",
+        "Target Android API level",
+        "18" if "32" in ARGUMENTS.get("arch", "arm64") 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),
+    )
+
+
+def exists(env):
+    if not "ANDROID_NDK_ROOT" in os.environ:
+        return False
+    return True
+
+
+def generate(env):
+    if not "ANDROID_NDK_ROOT" in os.environ:
+        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."
+        )
+
+    env["ANDROID_NDK_ROOT"] = os.environ["ANDROID_NDK_ROOT"]
+
+    if env["arch"] not in ("arm64", "x86_64", "arm32", "x86_32"):
+        print("Only arm64, x86_64, arm32, and x86_32 are supported on Android. Exiting.")
+        Exit()
+
+    if sys.platform == "win32" or sys.platform == "msys":
+        my_spawn.configure(env)
+
+    # Validate API level
+    api_level = int(env["android_api_level"])
+    if "64" in env["arch"] 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 sys.platform == "win32" or sys.platform == "msys":
+        toolchain += "windows"
+        import platform as pltfm
+
+        if pltfm.machine().endswith("64"):
+            toolchain += "-x86_64"
+    elif sys.platform.startswith("linux"):
+        toolchain += "linux-x86_64"
+    elif sys.platform == "darwin":
+        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 = {
+        "arm32": {
+            "march": "armv7-a",
+            "target": "armv7a-linux-androideabi",
+            "compiler_path": "armv7a-linux-androideabi",
+            "ccflags": ["-mfpu=neon"],
+        },
+        "arm64": {
+            "march": "armv8-a",
+            "target": "aarch64-linux-android",
+            "compiler_path": "aarch64-linux-android",
+            "ccflags": [],
+        },
+        "x86_32": {
+            "march": "i686",
+            "target": "i686-linux-android",
+            "compiler_path": "i686-linux-android",
+            "ccflags": ["-mstackrealign"],
+        },
+        "x86_64": {
+            "march": "x86-64",
+            "target": "x86_64-linux-android",
+            "compiler_path": "x86_64-linux-android",
+            "ccflags": [],
+        },
+    }
+    arch_info = arch_info_table[env["arch"]]
+
+    # Setup tools
+    env["CC"] = toolchain + "/bin/clang"
+    env["CXX"] = toolchain + "/bin/clang++"
+    env["LINK"] = toolchain + "/bin/clang++"
+    env["AR"] = toolchain + "/bin/llvm-ar"
+    env["AS"] = toolchain + "/bin/llvm-as"
+    env["STRIP"] = toolchain + "/bin/llvm-strip"
+    env["RANLIB"] = toolchain + "/bin/llvm-ranlib"
+    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"])
diff --git a/tools/ios.py b/tools/ios.py
new file mode 100644
index 0000000..1101d47
--- /dev/null
+++ b/tools/ios.py
@@ -0,0 +1,74 @@
+import os
+import sys
+import subprocess
+from SCons.Variables import *
+
+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]
+
+
+def options(opts):
+    opts.Add(BoolVariable("ios_simulator", "Target iOS Simulator", False))
+    opts.Add(
+        "IPHONEPATH",
+        "Path to iPhone toolchain",
+        "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain",
+    )
+
+
+def exists(env):
+    return sys.platform == "darwin"
+
+
+def generate(env):
+    if env["arch"] not in ("universal", "arm64", "x86_64"):
+        print("Only universal, arm64, and x86_64 are supported on iOS. Exiting.")
+        Exit()
+
+    if env["ios_simulator"]:
+        sdk_name = "iphonesimulator"
+        env.Append(CCFLAGS=["-mios-simulator-version-min=10.0"])
+    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"
+
+    if env["arch"] == "universal":
+        if env["ios_simulator"]:
+            env.Append(LINKFLAGS=["-arch", "x86_64", "-arch", "arm64"])
+            env.Append(CCFLAGS=["-arch", "x86_64", "-arch", "arm64"])
+        else:
+            env.Append(LINKFLAGS=["-arch", "arm64"])
+            env.Append(CCFLAGS=["-arch", "arm64"])
+    else:
+        env.Append(LINKFLAGS=["-arch", env["arch"]])
+        env.Append(CCFLAGS=["-arch", env["arch"]])
+
+    env.Append(CCFLAGS=["-isysroot", sdk_path])
+    env.Append(LINKFLAGS=["-isysroot", sdk_path, "-F" + sdk_path])
+
+    if env["target"] == "debug":
+        env.Append(CCFLAGS=["-Og", "-g"])
+    elif env["target"] == "release":
+        env.Append(CCFLAGS=["-O3"])
diff --git a/tools/javascript.py b/tools/javascript.py
new file mode 100644
index 0000000..5a93584
--- /dev/null
+++ b/tools/javascript.py
@@ -0,0 +1,45 @@
+import os
+
+
+def exists(env):
+    return "EM_CONFIG" in os.environ
+
+
+def generate(env):
+    if env["arch"] not in ("wasm32"):
+        print("Only wasm32 supported on web. Exiting.")
+        Exit()
+
+    if "EM_CONFIG" in os.environ:
+        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"])
diff --git a/tools/linux.py b/tools/linux.py
new file mode 100644
index 0000000..6f89d81
--- /dev/null
+++ b/tools/linux.py
@@ -0,0 +1,38 @@
+from SCons.Variables import *
+
+
+def options(opts):
+    opts.Add(BoolVariable("use_llvm", "Use the LLVM compiler - only effective when targeting Linux", False))
+
+
+def exists(env):
+    return True
+
+
+def generate(env):
+    if env["use_llvm"]:
+        base = env.Tool("clang")
+        base.generate(env)
+
+    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["arch"] == "x86_64":
+        # -m64 and -m32 are x86-specific already, but it doesn't hurt to
+        # be clear and also specify -march=x86-64. Similar with 32-bit.
+        env.Append(CCFLAGS=["-m64", "-march=x86-64"])
+        env.Append(LINKFLAGS=["-m64", "-march=x86-64"])
+    elif env["arch"] == "x86_32":
+        env.Append(CCFLAGS=["-m32", "-march=i686"])
+        env.Append(LINKFLAGS=["-m32", "-march=i686"])
+    elif env["arch"] == "arm64":
+        env.Append(CCFLAGS=["-march=armv8-a"])
+        env.Append(LINKFLAGS=["-march=armv8-a"])
+    elif env["arch"] == "rv64":
+        env.Append(CCFLAGS=["-march=rv64gc"])
+        env.Append(LINKFLAGS=["-march=rv64gc"])
diff --git a/tools/my_spawn.py b/tools/my_spawn.py
new file mode 100644
index 0000000..0b21419
--- /dev/null
+++ b/tools/my_spawn.py
@@ -0,0 +1,52 @@
+import os
+
+
+def exists(env):
+    return os.name == "nt"
+
+
+# Workaround for MinGW. See:
+# http://www.scons.org/wiki/LongCmdLinesOnWin32
+def configure(env):
+    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
+
+    env["SPAWN"] = mySpawn
+    env.Replace(ARFLAGS=["q"])
diff --git a/tools/osx.py b/tools/osx.py
new file mode 100644
index 0000000..1130f83
--- /dev/null
+++ b/tools/osx.py
@@ -0,0 +1,50 @@
+import os
+import sys
+
+
+def options(opts):
+    opts.Add("macos_deployment_target", "macOS deployment target", "default")
+    opts.Add("macos_sdk_path", "macOS SDK path", "")
+
+
+def exists(env):
+    return sys.platform == "darwin"
+
+
+def generate(env):
+    if env["arch"] not in ("universal", "arm64", "x86_64"):
+        print("Only universal, arm64, and x86_64 are supported on macOS. Exiting.")
+        Exit()
+
+    if sys.platform == "darwin":
+        # Use clang on macOS by default
+        env["CXX"] = "clang++"
+        env["CC"] = "clang"
+
+    if env["arch"] == "universal":
+        env.Append(LINKFLAGS=["-arch", "x86_64", "-arch", "arm64"])
+        env.Append(CCFLAGS=["-arch", "x86_64", "-arch", "arm64"])
+    else:
+        env.Append(LINKFLAGS=["-arch", env["arch"]])
+        env.Append(CCFLAGS=["-arch", env["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"])
diff --git a/tools/windows.py b/tools/windows.py
new file mode 100644
index 0000000..40d7712
--- /dev/null
+++ b/tools/windows.py
@@ -0,0 +1,68 @@
+import sys
+
+import my_spawn
+from SCons.Tool.MSCommon import msvc_exists
+from SCons.Variables import *
+
+
+def options(opts):
+    opts.Add(BoolVariable("use_mingw", "Use the MinGW compiler instead of MSVC - only effective on Windows", False))
+
+
+def exists(env):
+    return True
+
+
+def generate(env):
+    base = None
+    if not env["use_mingw"] and msvc_exists(env):
+        base = env.Tool("msvc")
+        env["is_msvc"] = True
+        if env["arch"] == "x86_64":
+            env["TARGET_ARCH"] = "amd64"
+        elif env["arch"] == "x86_32":
+            env["TARGET_ARCH"] = "x86"
+        base.generate(env)
+        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 sys.platform == "win32" or sys.platform == "msys":
+        env["use_mingw"] = True
+        base = env.Tool("mingw")
+        base.generate(env)
+        # Still need to use C++17.
+        env.Append(CCFLAGS=["-std=c++17"])
+        # Don't want lib prefixes
+        env["IMPLIBPREFIX"] = ""
+        env["SHLIBPREFIX"] = ""
+        # Want dll suffix
+        env["SHLIBSUFFIX"] = ".dll"
+        # Long line hack. Use custom spawn, quick AR append (to avoid files with the same names to override each other).
+        my_spawn.configure(env)
+
+    else:
+        env["use_mingw"] = True
+        # Cross-compilation using MinGW
+        prefix = "i686" if env["arch"] == "x86_32" else env["arch"]
+        env["CXX"] = prefix + "-w64-mingw32-g++"
+        env["CC"] = prefix + "-w64-mingw32-gcc"
+        env["AR"] = prefix + "-w64-mingw32-ar"
+        env["RANLIB"] = prefix + "-w64-mingw32-ranlib"
+        env["LINK"] = prefix + "-w64-mingw32-g++"
+        # Want dll suffix
+        env["SHLIBSUFFIX"] = ".dll"
+
+        # 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++",
+            ]
+        )