Question

我有一个我正在上课的OpenGL项目，它基于GLUI。提供的GLUI库不起作用，这就是为什么我要自己编译它。所以，我从SourceForge下载了源代码并尝试编译_glui库。它给了我这个，我找不到任何关于它的信息：

1>ClCompile:
1>  algebra3.cpp
1>  arcball.cpp
1>  glui.cpp
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1718): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1719): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>  glui_add_controls.cpp
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1718): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1719): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>  glui_bitmap_img_data.cpp
1>  glui_bitmaps.cpp
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1718): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1719): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>  glui_button.cpp
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1718): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1719): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>  glui_checkbox.cpp
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1718): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>c:\users\jake\downloads\glui-2.36\glui-2.36\src\include\gl\glui.h(1719): error C2252: an explicit instantiation of a template can only occur at namespace scope
1>  glui_column.cpp

等等等等

我查看了glui.h源文件，第1718和1719行有：

#ifdef _MSC_VER
// Explicit template instantiation needed for dll
template class GLUIAPI std::allocator<GLUI_String>;
template class GLUIAPI std::vector<GLUI_String, std::allocator<GLUI_String> >;
#endif

之前有人见过这个吗？

Answer 1

我刚遇到这个问题。然后我做了以下，你可以试试。

（1）从gib下载最新的愿景（2）使用vs2010构建它。
（3）你会遇到问题

#ifdef _MSC_VER
// Explicit template instantiation needed for dll
template class GLUIAPI std::allocator<GLUI_String>;
template class GLUIAPI std::vector<GLUI_String, std::allocator<GLUI_String> >;
#endif

只是让代码退出课堂，再次重建。
（4）你将生成glui.lib （5）使用glui.lib和glui.h

Answer 2

您无法在函数或类中显式实例化模板。尝试将其移到函数或类之外。或者它是一个图书馆？

Answer 3

如果有人有更多信息，我会很高兴听到它，但我发现在glui.h中注释掉这一部分允许它编译。现在我们将了解编译的库是否真的有效....

编译GLUI库，VS2010给我一个奇怪的命名空间错误

3 个答案: