Question

当我尝试使用gli / gli.hpp进行编译时，我发现了错误。我以前从未接触过这些文件。所以我不知道如何解决问题。

In file included from /usr/include/gli/gli.hpp:42:0,
              from window.cpp:4:
/usr/include/gli/./core/storage.hpp:89:25: error: declaration of ‘gli::storage::format_type gli::storage::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:45:0,
              from window.cpp:4:
/usr/include/gli/./core/texture2d.hpp:71:24: error: declaration of ‘gli::texture2D::format_type gli::texture2D::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:46:0
             from window.cpp:4:
/usr/include/gli/./core/texture2d_array.hpp:72:24: error: declaration of ‘gli::texture2DArray::format_type gli::texture2DArray::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:47:0,
             from window.cpp:4:
/usr/include/gli/./core/texture3d.hpp:71:24: error: declaration of ‘gli::texture3D::format_type gli::texture3D::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:51:0,
             from window.cpp:4:
/usr/include/gli/./core/load_dds.hpp:37:3: error: ‘string’ is not a member of ‘std’

In file included from /usr/include/gli/./core/load_dds.hpp:41:0,
             from /usr/include/gli/gli.hpp:51,
             from window.cpp:4:
/usr/include/gli/./core/load_dds.inl: In function ‘gli::storage gli::loadStorageDDS(const string&)’:
/usr/include/gli/./core/load_dds.inl:303:1: error: ‘gli::storage gli::loadStorageDDS(const string&)’ redeclared as different kind of symbol
/usr/include/gli/./core/load_dds.hpp:36:10: error: previous declaration of ‘gli::storage gli::loadStorageDDS’

Answer 1

简短的回答是，您的C ++编译器比用于开发gli的编译器更严格。通过在-fpermissive行添加g++，可以解决第一个错误（无需正确修复）。此错误看起来像是在gli::storage::format()

上使用错误的返回类型

In file included from /usr/include/gli/gli.hpp:42:0,
              from window.cpp:4:
/usr/include/gli/./core/storage.hpp:89:25: error: declaration of ‘gli::storage::format_type gli::storage::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:45:0,
              from window.cpp:4:
/usr/include/gli/./core/texture2d.hpp:71:24: error: declaration of ‘gli::texture2D::format_type gli::texture2D::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:46:0
             from window.cpp:4:
/usr/include/gli/./core/texture2d_array.hpp:72:24: error: declaration of ‘gli::texture2DArray::format_type gli::texture2DArray::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

In file included from /usr/include/gli/gli.hpp:47:0,
             from window.cpp:4:
/usr/include/gli/./core/texture3d.hpp:71:24: error: declaration of ‘gli::texture3D::format_type gli::texture3D::format() const’ [-fpermissive]
/usr/include/gli/./core/format.hpp:36:8: error: changes meaning of ‘format’ from ‘enum gli::format’ [-fpermissive]

以下错误似乎是包含错误的头文件的情况。特别是，load_dds.hpp包含另一个头文件（storage.hpp），其中包含<cstring>，而不是<string>，这是C ++声明std::string的地方。快速解决方法是在您下载的副本中将<string>添加到storage.hpp，并提交错误。

In file included from /usr/include/gli/gli.hpp:51:0,
             from window.cpp:4:
/usr/include/gli/./core/load_dds.hpp:37:3: error: ‘string’ is not a member of ‘std’

对于这一个，我认为问题在于load_dds.hpp，gli::loadStorageDDS被视为一个函数，但没有标记为inline，这就是load_dds.inl中发生的事情。 {1}}。 .inl机制似乎是Microsoft混合的一种，因此您可能需要修改.hpp以包含.inl实现以保持一致。（这是猜测，BTW）。

In file included from /usr/include/gli/./core/load_dds.hpp:41:0,
             from /usr/include/gli/gli.hpp:51,
             from window.cpp:4:
/usr/include/gli/./core/load_dds.inl: In function ‘gli::storage gli::loadStorageDDS(const string&)’:
/usr/include/gli/./core/load_dds.inl:303:1: error: ‘gli::storage gli::loadStorageDDS(const string&)’ redeclared as different kind of symbol
/usr/include/gli/./core/load_dds.hpp:36:10: error: previous declaration of ‘gli::storage gli::loadStorageDDS’

Answer 2

我认为问题在于您没有告诉编译器您需要使用C ++ 11标准进行编译。

如果您正在使用gcc，则必须通过

-std=c++11

命令行上的

（如果您使用的是旧版本的gcc，则为-std = c ++ 0x）

编译时出现OpenGL GLI错误

2 个答案: