Linux 尝试在Ubuntu上构建OpenShadingLanguage时出错

我已经设置了所有依赖项，据我所知，ccmake显示所有的依赖项都已找到。但是，当我运行make时，会得到以下输出：

shanesimmsart@shanesimmsart-pc:~/OpenShadingLanguage/build$ make
[  1%] Building CXX object src/liboslcomp/CMakeFiles/oslcomp.dir/ast.cpp.o
In file included from /home/shanesimmsart/OpenShadingLanguage/src/include/osl_pvt.h:31:0,
                 from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:35:
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslconfig.h:109:13: error: ‘OIIO::string_view’ has not been declared
 using OIIO::string_view;
             ^
In file included from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:35:0:
/home/shanesimmsart/OpenShadingLanguage/src/include/osl_pvt.h:54:1: error: ‘string_view’ does not name a type
 string_view shadertypename (ShaderType s);
 ^
/home/shanesimmsart/OpenShadingLanguage/src/include/osl_pvt.h:58:34: error: ‘string_view’ was not declared in this scope
 ShaderType shadertype_from_name (string_view name);
                                  ^
/home/shanesimmsart/OpenShadingLanguage/src/include/osl_pvt.h:76:32: error: ‘string_view’ was not declared in this scope
 ShaderUse shaderuse_from_name (string_view name);
                                ^
In file included from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:36:0,
                 from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:36:
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:52:19: error: ‘string_view’ has not been declared
     bool compile (string_view filename,
                   ^
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:54:19: error: ‘string_view’ has not been declared
                   string_view stdoslpath = string_view());
                   ^
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:59:26: error: ‘string_view’ has not been declared
     bool compile_buffer (string_view sourcecode, std::string &osobuffer,
                          ^
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:61:26: error: ‘string_view’ has not been declared
                          string_view stdoslpath = string_view());
                          ^
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:65:5: error: ‘string_view’ does not name a type
     string_view output_filename () const;
     ^
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:54:56: error: ‘string_view’ was not declared in this scope
                   string_view stdoslpath = string_view());
                                                        ^
/home/shanesimmsart/OpenShadingLanguage/src/include/OSL/oslcomp.h:61:63: error: ‘string_view’ was not declared in this scope
                          string_view stdoslpath = string_view());
                                                               ^
In file included from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:37:0,
                 from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:36:
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.h:354:5: error: ‘string_view’ does not name a type
     string_view shadertypename () const;
     ^
In file included from /home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:36:0:
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:69:19: error: ‘string_view’ has not been declared
     bool compile (string_view filename,
                   ^
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:71:19: error: ‘string_view’ has not been declared
                   string_view stdoslpath);
                   ^
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:73:26: error: ‘string_view’ has not been declared
     bool compile_buffer (string_view sourcecode,
                          ^
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:76:26: error: ‘string_view’ has not been declared
                          string_view stdoslpath);
                          ^
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/oslcomp_pvt.h:249:5: error: ‘string_view’ does not name a type
     string_view output_filename () const { return m_output_filename; }
     ^
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp: In member function ‘virtual void OSL::pvt::ASTshader_declaration::print(std::ostream&, int) const’:
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:195:59: error: ‘shadertypename’ was not declared in this scope
     out << "(" << nodetypename() << " " << shadertypename()
                                                           ^
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp: At global scope:
/home/shanesimmsart/OpenShadingLanguage/src/liboslcomp/ast.cpp:204:1: error: ‘string_view’ does not name a type
 string_view
 ^
make[2]: *** [src/liboslcomp/CMakeFiles/oslcomp.dir/ast.cpp.o] Error 1
make[1]: *** [src/liboslcomp/CMakeFiles/oslcomp.dir/all] Error 2
make: *** [all] Error 2

这似乎是OpenImageIO中包含的string_view.h的问题，但是当我查看/usr/include/OpenImageIO/时，string_view.h就在那里。据我所知，OIIO是1.5版的最新版本，所以我也不能想象这是一个版本问题，尽管我不排除这一点

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如果您有任何建议，我们将不胜感激。

没有错误消息表明未找到该文件，因此请注意，它是正确的，没有任何关系：不是编译器找不到它。如果确实可以在string_view.h中找到丢失的声明，那么要么它没有被正确地包含在需要包含的位置，要么它还有其他的ifdef？这使得编译器无法看到所需的声明。再次感谢您的帮助。我已经尝试过进入oslconfig.h和string_view.h并使用include，但运气不好，尽管我应该调整这样的内容似乎很愚蠢。不确定我应该在这里更改什么。你应该找到支持此软件的邮件列表或论坛，并询问他们。