1 files changed, 155 insertions, 0 deletions
diff --git a/platform/ios/detect.py b/platform/ios/detect.py
new file mode 100644
index 0000000000..38e62134b5
--- /dev/null
+++ b/platform/ios/detect.py
@@ -0,0 +1,155 @@
+import os
+import sys
+from methods import detect_darwin_sdk_path
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from SCons import Environment
+
+
+def is_active():
+    return True
+
+
+def get_name():
+    return "iOS"
+
+
+def can_build():
+    if sys.platform == "darwin" or ("OSXCROSS_IOS" in os.environ):
+        return True
+
+    return False
+
+
+def get_opts():
+    from SCons.Variables import BoolVariable
+
+    return [
+        (
+            "IOS_TOOLCHAIN_PATH",
+            "Path to iOS toolchain",
+            "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain",
+        ),
+        ("IOS_SDK_PATH", "Path to the iOS SDK", ""),
+        BoolVariable("ios_simulator", "Build for iOS Simulator", False),
+        BoolVariable("ios_exceptions", "Enable exceptions", False),
+        ("ios_triple", "Triple for ios toolchain", ""),
+    ]
+
+
+def get_flags():
+    return [
+        ("arch", "arm64"),  # Default for convenience.
+        ("target", "template_debug"),
+        ("use_volk", False),
+    ]
+
+
+def configure(env: "Environment"):
+    # Validate arch.
+    supported_arches = ["x86_64", "arm64"]
+    if env["arch"] not in supported_arches:
+        print(
+            'Unsupported CPU architecture "%s" for iOS. Supported architectures are: %s.'
+            % (env["arch"], ", ".join(supported_arches))
+        )
+        sys.exit()
+
+    ## LTO
+
+    if env["lto"] == "auto":  # Disable by default as it makes linking in Xcode very slow.
+        env["lto"] = "none"
+
+    if env["lto"] != "none":
+        if env["lto"] == "thin":
+            env.Append(CCFLAGS=["-flto=thin"])
+            env.Append(LINKFLAGS=["-flto=thin"])
+        else:
+            env.Append(CCFLAGS=["-flto"])
+            env.Append(LINKFLAGS=["-flto"])
+
+    ## Compiler configuration
+
+    # Save this in environment for use by other modules
+    if "OSXCROSS_IOS" in os.environ:
+        env["osxcross"] = True
+
+    env["ENV"]["PATH"] = env["IOS_TOOLCHAIN_PATH"] + "/Developer/usr/bin/:" + env["ENV"]["PATH"]
+
+    compiler_path = "$IOS_TOOLCHAIN_PATH/usr/bin/${ios_triple}"
+    s_compiler_path = "$IOS_TOOLCHAIN_PATH/Developer/usr/bin/"
+
+    ccache_path = os.environ.get("CCACHE")
+    if ccache_path is None:
+        env["CC"] = compiler_path + "clang"
+        env["CXX"] = compiler_path + "clang++"
+        env["S_compiler"] = s_compiler_path + "gcc"
+    else:
+        # there aren't any ccache wrappers available for iOS,
+        # to enable caching we need to prepend the path to the ccache binary
+        env["CC"] = ccache_path + " " + compiler_path + "clang"
+        env["CXX"] = ccache_path + " " + compiler_path + "clang++"
+        env["S_compiler"] = ccache_path + " " + s_compiler_path + "gcc"
+    env["AR"] = compiler_path + "ar"
+    env["RANLIB"] = compiler_path + "ranlib"
+
+    ## Compile flags
+
+    if env["ios_simulator"]:
+        detect_darwin_sdk_path("iossimulator", env)
+        env.Append(ASFLAGS=["-mios-simulator-version-min=13.0"])
+        env.Append(CCFLAGS=["-mios-simulator-version-min=13.0"])
+        env.extra_suffix = ".simulator" + env.extra_suffix
+    else:
+        detect_darwin_sdk_path("ios", env)
+        env.Append(ASFLAGS=["-miphoneos-version-min=11.0"])
+        env.Append(CCFLAGS=["-miphoneos-version-min=11.0"])
+
+    if env["arch"] == "x86_64":
+        if not env["ios_simulator"]:
+            print("ERROR: Building for iOS with 'arch=x86_64' requires 'ios_simulator=yes'.")
+            sys.exit(255)
+
+        env["ENV"]["MACOSX_DEPLOYMENT_TARGET"] = "10.9"
+        env.Append(
+            CCFLAGS=(
+                "-fobjc-arc -arch x86_64"
+                " -fobjc-abi-version=2 -fobjc-legacy-dispatch -fmessage-length=0 -fpascal-strings -fblocks"
+                " -fasm-blocks -isysroot $IOS_SDK_PATH"
+            ).split()
+        )
+        env.Append(ASFLAGS=["-arch", "x86_64"])
+    elif env["arch"] == "arm64":
+        env.Append(
+            CCFLAGS=(
+                "-fobjc-arc -arch arm64 -fmessage-length=0 -fno-strict-aliasing"
+                " -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits"
+                " -fpascal-strings -fblocks -fvisibility=hidden -MMD -MT dependencies"
+                " -isysroot $IOS_SDK_PATH".split()
+            )
+        )
+        env.Append(ASFLAGS=["-arch", "arm64"])
+        env.Append(CPPDEFINES=["NEED_LONG_INT"])
+
+    if env["ios_exceptions"]:
+        env.Append(CCFLAGS=["-fexceptions"])
+    else:
+        env.Append(CCFLAGS=["-fno-exceptions"])
+
+    # Temp fix for ABS/MAX/MIN macros in iOS SDK blocking compilation
+    env.Append(CCFLAGS=["-Wno-ambiguous-macro"])
+
+    env.Prepend(
+        CPPPATH=[
+            "$IOS_SDK_PATH/usr/include",
+            "$IOS_SDK_PATH/System/Library/Frameworks/AudioUnit.framework/Headers",
+        ]
+    )
+
+    env.Prepend(CPPPATH=["#platform/ios"])
+    env.Append(CPPDEFINES=["IOS_ENABLED", "UNIX_ENABLED", "COREAUDIO_ENABLED"])
+
+    if env["vulkan"]:
+        env.Append(CPPDEFINES=["VULKAN_ENABLED"])