在Visual Studio中使用64位编译器 [英] Use 64 bit compiler in Visual Studio

问题描述

我使用Visual Studio2017。在一个项目（我的目标是x64）中，出现错误：C1060，编译器空间不足，遗憾地得知编译存在内存限制。

I use Visual Studio 2017. In a project (that I target as x64), I get error : C1060, compiler is out of heap space, and sadly learned there happen to exist a memory limitation for compilation.

监视CL.exe时，它的确停止运行，直到达到4GB。因此，看起来CL.exe默认为32位应用程序，如以下所示：> https://docs.microsoft.com/zh-cn/cpp/build/how-to-enable-a-64 -bit-visual-cpp-tool-on-command-line

When monitoring CL.exe, it indeed stop just before reaching 4GB. So it looks like CL.exe is by default a 32bits application, as seen at : https://docs.microsoft.com/en-us/cpp/build/how-to-enable-a-64-bit-visual-cpp-toolset-on-the-command-line

阅读此页后，我安装了 Universal Windows Platform工作负载，希望能够可以访问64位版本的CL.exe。但是在编译项目时没有任何变化，并且我在Visual Studio中看不到一个选择编译器版本的选项。

After reading this page, I installed "Universal Windows Platform workload" hoping to get access to a 64 bit version of CL.exe. But no change when compiling my project, and I can't see a single option in visual studio to choose compiler version.

我认为必须存在一种解决方法单个编译单元可以使用超过4GB的内存，但是我暂时找不到。任何帮助将不胜感激。

I assume that there must exist a workaround to be able to use more than 4GB for a single compilation unit, but I couldn't find it for now. Any help would be much appreciated.

编辑：我在调试模式下遇到限制。在发布模式下，编译工作正常。

Edit : I hit limitation in Debug mode. Compilation is doing fine in Release mode. Which is suppose makes sense.

推荐答案

默认情况下，Visual Studio使用32位工具链（即，编译器为32位，交叉编译64位可执行文件）。 Visual Studio 2015和2017包含所有编译器（x86，x64，arm，arm64）的32位和64位版本。

By default Visual Studio uses the 32-bit toolchain (i.e. the compiler is 32-bit and cross-compiles 64-bit executables). Visual Studio 2015 and 2017 include both 32-bit and 64-bit versions of all the compilers (x86, x64, arm, arm64).

您可以选择加入通过两种方法在64位系统上使用64位工具链：

You can opt-in to using the 64-bit toolchain on a 64-bit system by two methods:

1. 在构建机器上添加环境变量（两个

例如：

set PreferredToolArchitecture=x64
devenv

1. 您可以使用< PreferredToolArchitecture> x64< / PreferredToolArchitecture>编辑<$​​ c $ c> vcxproj 文件来执行此操作; 元素：

1. You can edit your vcxproj files to do this as well with the <PreferredToolArchitecture>x64</PreferredToolArchitecture> element:

例如：

<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>true</UseDebugLibraries>
    <PlatformToolset>v141</PlatformToolset>
    <PreferredToolArchitecture>x64</PreferredToolArchitecture>
    <CharacterSet>Unicode</CharacterSet>
  </PropertyGroup>

我在 Direct3D游戏VS模板，我只是注意到我应该将其添加到UWP（C ++ / CX）和Win32中版本。 Xbox One XDK也会在其平台构建规则中自动执行此操作。

I use the second method in the UWP (C++/WinRT) versions of my Direct3D Game VS Templates, and I just noticed that I should add it to my UWP (C++/CX) and Win32 versions. The Xbox One XDK automatically does this in it's platform build rules as well.

请注意，此问题已在过去得到解答：如何使Visual Studio使用本机amd64工具链

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