PNaCl - 编译错误＆＃34;仅支持Win32目标＆＃34;

Question

我正在开发使用一些标准C ++库的Portable Native Client应用程序，例如iostream和fstream。当我包含这些头文件并尝试使用Visual Studio 2012 Pro编译项目时，会抛出许多错误：

根据Native Client文档，可以在PNaCl项目中使用标准C ++库。 有没有人遇到过这个问题或知道如何解决它？

编辑：

@rubenvb：我不认为我正在编译x64 ..我的目标配置是Debug \ PNaCl。

@JF Bastien：我正在使用SDK附带的编译器。编译器调用：

  C:\nacl_sdk\pepper_39\toolchain\win_pnacl\bin\pnacl-clang.bat -o PNaCl/newlib/Debug/decompressor_prototype.obj -DNACL -ID:/dev/hello_nacl_cpp/charls -I"C:/Program Files (x86)/Microsoft Visual Studio 11.0/VC/include" -Iinclude -Iatlmfc/include -IC:/nacl_sdk/pepper_39/toolchain/win_pnacl/usr/local/include -IC:/nacl_sdk/pepper_39/toolchain/win_pnacl/usr/include -IC:/nacl_sdk/pepper_39/toolchain/win_pnacl//lib/clang/3.4/include -IC:/nacl_sdk/pepper_39/include -fexceptions -MMD -g -O0 -c decompressor_prototype.cpp

以下是错误的文字版本：

1>------ Build started: Project: decompressor_prototype, Configuration: Debug PNaCl ------
1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.CppBuild.targets(343,5): warning MSB8003: Could not find VCInstallDir variable from the registry.  TargetFrameworkVersion or PlatformToolset may be set to an invalid version number.
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\crtdefs.h(44,2): error : ERROR: Only Win32 target supported!
1>NACLCOMPILE : #error error : Only Win32 target supported!
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\vadefs.h(19,2): error : ERROR: Only Win32 target supported!
1>NACLCOMPILE : #error error : Only Win32 target supported!
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\crtdefs.h(470,18): error : 'short wchar_t' is invalid
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\crtdefs.h(470,1): warning : typedef requires a name [-Wmissing-declarations]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\crtdefs.h(506,9): error : unknown type name '__int64'
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(509,9): error : unknown type name '__int64'
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(510,19): error : expected ';' after top level declarator
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(575,2): warning : calling convention '__thiscall' ignored for this target [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(576,11): warning : calling convention '__thiscall' ignored for this target [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(577,2): warning : calling convention '__thiscall' ignored for this target [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(709,5): warning : calling convention '__thiscall' ignored for this target [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\yvals.h(710,2): warning : calling convention '__thiscall' ignored for this target [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(445,33): error : redefinition of '__int64' as different kind of symbol
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(445,40): error : expected ';' after top level declarator
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(445,88): error : expected ')'
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(445,49): error : C++ requires a type specifier for all declarations
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(471,77): error : expected ')'
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(472,91): error : expected ')'
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(477,33): error : redefinition of '__int64' as different kind of symbol
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(477,40): error : expected ';' after top level declarator
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(477,49): error : C++ requires a type specifier for all declarations
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(478,33): error : redefinition of '__int64' as different kind of symbol
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(478,40): error : expected ';' after top level declarator
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(478,49): error : C++ requires a type specifier for all declarations
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(619,111): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(619,99): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(620,29): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(620,29): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(621,104): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(621,92): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(623,88): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(623,76): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(625,92): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(625,80): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(626,29): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(626,29): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(627,85): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(627,73): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(628,85): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(628,73): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(630,88): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(630,76): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(632,92): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(632,80): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(634,88): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(634,76): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(636,92): warning : __declspec attribute 'restrict' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(636,80): warning : __declspec attribute 'noalias' is not supported [-Wignored-attributes]
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\stdlib.h(713,77): error : expected ')'
1>NACLCOMPILE : fatal error : too many errors emitted, stopping now [-ferror-limit=]
========== Build: 0 succeeded, 1 failed, 1 up-to-date, 0 skipped ==========

Answer 1

tl; dr：删除大部分-I包含。

C ++标准库可以与PNaCl一起使用，但并非所有的实现都可以使用！您明确告诉编译器使用Visual Studio的标准库实现（使用-I选项），但您不需要这样做：默认情况下，PNaCl编译器将链接到libc ++（我们对libstdc ++有遗留支持，但我不建议使用它。）

这不只是包含的问题：

• C ++库依赖于C库，而PNaCl假设使用了newlib（我们也有仿生的实验支持，很快就会有glibc）。
• C ++库依赖于链接到程序中的运行时函数。这将自动发生，但不能使用Visual Studio包含，因为它们没有相同的运行时。

我发现你还包括ATL MFC，我也不确定是否也会工作。

Answer 2

您正在为64位（x64）进行编译，但PNaCl不支持，或者某些标题中的某些#error您不会向我们展示（因为您最常剪掉了）你正在告诉你的错误。

为什么__int64会引发错误，我不知道，因为它是MSVC builtin type。另外，请使用<cinttypes>＆＃39; std::int64_t（可选）或std::int_least64_t（始终在符合要求的实施中提供）。