static string GetLinkArguments(LinkEnvironment LinkEnvironment, string Architecture)
{
string Result = "";
Result += " -nostdlib";
Result += " -Wl,-shared,-Bsymbolic";
Result += " -Wl,--no-undefined";
if (UnrealBuildTool.BuildingRocket())
{
Result += " -Wl,--strip-debug";
}
if (Architecture == "-armv7")
{
Result += ToolchainParamsArm;
Result += " -march=armv7-a";
Result += " -Wl,--fix-cortex-a8"; // required to route around a CPU bug in some Cortex-A8 implementations
}
else if (Architecture == "-x86")
{
Result += ToolchainParamsx86;
Result += " -march=atom";
}
// verbose output from the linker
// Result += " -v";
return(Result);
}
static string GetLinkArguments(LinkEnvironment LinkEnvironment)
{
string Result = "";
// debugging symbols
if (LinkEnvironment.Config.Target.Configuration < CPPTargetConfiguration.Shipping)
{
Result += " -rdynamic"; // needed for backtrace_symbols()...
}
else
{
Result += " -s"; // Strip binaries in Shipping
}
if (LinkEnvironment.Config.bIsBuildingDLL)
{
Result += " -shared";
}
else
{
// ignore unresolved symbols in shared libs
Result += string.Format(" -Wl,--unresolved-symbols=ignore-in-shared-libs");
}
if (UnrealBuildTool.BuildingRocket())
{
// strip symbols for Rocket in every configuration
Result += " -Wl,-s";
}
// RPATH for third party libs
Result += " -Wl,-rpath=${ORIGIN}";
Result += " -Wl,-rpath-link=${ORIGIN}";
Result += " -Wl,-rpath=${ORIGIN}/../../../Engine/Binaries/Linux";
Result += " -Wl,-rpath=${ORIGIN}/.."; // for modules that are in sub-folders of the main Engine/Binary/Linux folder
// FIXME: really ugly temp solution. Modules need to be able to specify this
Result += " -Wl,-rpath=${ORIGIN}/../../../Engine/Binaries/ThirdParty/ICU/icu4c-53_1/Linux/x86_64-unknown-linux-gnu";
if (CrossCompiling())
{
if (UsingClang())
{
Result += String.Format(" -target {0}", LinkEnvironment.Config.Target.Architecture); // Set target triple
}
string SysRootPath = BaseLinuxPath.TrimEnd(new char[] { '\\', '/' });
Result += String.Format(" \"--sysroot={0}\"", SysRootPath);
}
return(Result);
}
/**
* Register the platform with the UEBuildPlatform class
*/
protected override void RegisterBuildPlatformInternal()
{
//@todo.Rocket: Add platform support
if (UnrealBuildTool.RunningRocket() || UnrealBuildTool.BuildingRocket() || Utils.IsRunningOnMono)
{
return;
}
if ((ProjectFileGenerator.bGenerateProjectFiles == true) || (IsVisualStudioInstalled() == true))
{
bool bRegisterBuildPlatform = true;
// We also need to check for the generated projects... to handle the case where someone generates projects w/out WinRT.
// Hardcoding this for now - but ideally it would be dynamically discovered.
string EngineSourcePath = Path.Combine(ProjectFileGenerator.EngineRelativePath, "Source");
string WinRTRHIFile = Path.Combine(EngineSourcePath, "Runtime", "Windows", "D3D11RHI", "D3D11RHI.build.cs");
if (File.Exists(WinRTRHIFile) == false)
{
bRegisterBuildPlatform = false;
}
if (bRegisterBuildPlatform == true)
{
// Register this build platform for WinRT
Log.TraceVerbose(" Registering for {0}", UnrealTargetPlatform.WinRT.ToString());
UEBuildPlatform.RegisterBuildPlatform(UnrealTargetPlatform.WinRT, this);
UEBuildPlatform.RegisterPlatformWithGroup(UnrealTargetPlatform.WinRT, UnrealPlatformGroup.Microsoft);
// For now only register WinRT_ARM is truly a Windows 8 machine.
// This will prevent people who do all platform builds from running into the compiler issue.
if (WinRTPlatform.IsWindows8() == true)
{
Log.TraceVerbose(" Registering for {0}", UnrealTargetPlatform.WinRT_ARM.ToString());
UEBuildPlatform.RegisterBuildPlatform(UnrealTargetPlatform.WinRT_ARM, this);
UEBuildPlatform.RegisterPlatformWithGroup(UnrealTargetPlatform.WinRT_ARM, UnrealPlatformGroup.Microsoft);
}
}
}
}
/**
* Register the platform with the UEBuildPlatform class
*/
protected override void RegisterBuildPlatformInternal()
{
//@todo.Rocket: Add platform support
if (UnrealBuildTool.RunningRocket() || UnrealBuildTool.BuildingRocket())
{
return;
}
// Make sure the SDK is installed
if ((ProjectFileGenerator.bGenerateProjectFiles == true) || (HasRequiredSDKsInstalled() == SDKStatus.Valid))
{
bool bRegisterBuildPlatform = true;
// make sure we have the HTML5 files; if not, then this user doesn't really have HTML5 access/files, no need to compile HTML5!
string EngineSourcePath = Path.Combine(ProjectFileGenerator.EngineRelativePath, "Source");
string HTML5TargetPlatformFile = Path.Combine(EngineSourcePath, "Developer", "HTML5", "HTML5TargetPlatform", "HTML5TargetPlatform.Build.cs");
if ((File.Exists(HTML5TargetPlatformFile) == false))
{
bRegisterBuildPlatform = false;
Log.TraceWarning("Missing required components (.... HTML5TargetPlatformFile, others here...). Check source control filtering, or try resyncing.");
}
if (bRegisterBuildPlatform == true)
{
// Register this build platform for HTML5
Log.TraceVerbose(" Registering for {0}", UnrealTargetPlatform.HTML5.ToString());
UEBuildPlatform.RegisterBuildPlatform(UnrealTargetPlatform.HTML5, this);
if (GetActiveArchitecture() == "-win32")
{
UEBuildPlatform.RegisterPlatformWithGroup(UnrealTargetPlatform.HTML5, UnrealPlatformGroup.Simulator);
}
else
{
UEBuildPlatform.RegisterPlatformWithGroup(UnrealTargetPlatform.HTML5, UnrealPlatformGroup.Device);
}
}
}
}
static string GetCLArguments_Global(CPPEnvironment CompileEnvironment, string Architecture)
{
string Result = "";
Result += (Architecture == "-armv7") ? ToolchainParamsArm : ToolchainParamsx86;
// build up the commandline common to C and C++
Result += " -c";
Result += " -fdiagnostics-format=msvc";
Result += " -Wall";
Result += " -Wno-unused-variable";
// this will hide the warnings about static functions in headers that aren't used in every single .cpp file
Result += " -Wno-unused-function";
// this hides the "enumeration value 'XXXXX' not handled in switch [-Wswitch]" warnings - we should maybe remove this at some point and add UE_LOG(, Fatal, ) to default cases
Result += " -Wno-switch";
// this hides the "warning : comparison of unsigned expression < 0 is always false" type warnings due to constant comparisons, which are possible with template arguments
Result += " -Wno-tautological-compare";
//This will prevent the issue of warnings for unused private variables.
Result += " -Wno-unused-private-field";
Result += " -Wno-local-type-template-args"; // engine triggers this
Result += " -Wno-return-type-c-linkage"; // needed for PhysX
Result += " -Wno-reorder"; // member initialization order
Result += " -Wno-unknown-pragmas"; // probably should kill this one, sign of another issue in PhysX?
Result += " -Wno-invalid-offsetof"; // needed to suppress warnings about using offsetof on non-POD types.
Result += " -Wno-logical-op-parentheses"; // needed for external headers we can't change
// new for clang4.5 warnings:
if (ClangVersionFloat >= 3.5)
{
Result += " -Wno-undefined-bool-conversion"; // 'this' pointer cannot be null in well-defined C++ code; pointer may be assumed to always convert to true (if (this))
}
// shipping builds will cause this warning with "ensure", so disable only in those case
if (CompileEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
{
Result += " -Wno-unused-value";
}
// debug info
if (CompileEnvironment.Config.bCreateDebugInfo && !UnrealBuildTool.BuildingRocket())
{
Result += " -g2 -gdwarf-2";
}
// optimization level
if (CompileEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Debug)
{
Result += " -O0";
}
else
{
if (UEBuildConfiguration.bCompileForSize)
{
Result += " -Oz";
}
else
{
Result += " -O3";
}
}
//@todo android: these are copied verbatim from UE3 and probably need adjustment
if (Architecture == "-armv7")
{
// Result += " -mthumb-interwork"; // Generates code which supports calling between ARM and Thumb instructions, w/o it you can't reliability use both together
Result += " -funwind-tables"; // Just generates any needed static data, affects no code
Result += " -fstack-protector"; // Emits extra code to check for buffer overflows
// Result += " -mlong-calls"; // Perform function calls by first loading the address of the function into a reg and then performing the subroutine call
Result += " -fno-strict-aliasing"; // Prevents unwanted or invalid optimizations that could produce incorrect code
Result += " -fpic"; // Generates position-independent code (PIC) suitable for use in a shared library
Result += " -fno-exceptions"; // Do not enable exception handling, generates extra code needed to propagate exceptions
Result += " -fno-rtti"; //
Result += " -fno-short-enums"; // Do not allocate to an enum type only as many bytes as it needs for the declared range of possible values
// Result += " -finline-limit=64"; // GCC limits the size of functions that can be inlined, this flag allows coarse control of this limit
// Result += " -Wno-psabi"; // Warn when G++ generates code that is probably not compatible with the vendor-neutral C++ ABI
Result += " -march=armv7-a";
Result += " -mfloat-abi=softfp";
Result += " -mfpu=vfpv3-d16"; //@todo android: UE3 was just vfp. arm7a should all support v3 with 16 registers
// Some switches interfere with on-device debugging
if (CompileEnvironment.Config.Target.Configuration != CPPTargetConfiguration.Debug)
{
Result += " -ffunction-sections"; // Places each function in its own section of the output file, linker may be able to perform opts to improve locality of reference
}
Result += " -fsigned-char"; // Treat chars as signed //@todo android: any concerns about ABI compatibility with libs here?
}
else if (Architecture == "-x86")
{
Result += " -fstrict-aliasing";
Result += " -fno-omit-frame-pointer";
Result += " -fno-strict-aliasing";
Result += " -fno-short-enums";
Result += " -fno-exceptions";
Result += " -fno-rtti";
Result += " -march=atom";
}
return(Result);
}
