v4l2驱动摄像头 出现错误UINT64_C' was not declared in this scope 解决

最新推荐文章于 2024-08-22 16:19:44 发布
最新推荐文章于 2024-08-22 16:19:44 发布 · 95 阅读 · 0

本文提供了解决编译错误的方法，该错误出现在使用UINT64_C宏时，宏未在当前作用域声明。通过在common.h文件中添加特定代码段，可以解决这一问题。

编译时报错如下：

/usr/include/libavutil/common.h:168: 错误:'UINT64_C' was not declared in this scope

解决：

在common.h里面添加#ifndef UINT64_C


#define UINT64_C(value)__CONCAT(value,ULL)


#endif

视图如下：



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35 0 F:\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdint In file included from F:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++/cstdint 6 C:\Users\余伟杰\Desktop\哈希算法.cpp from C:\Users\余伟杰\Desktop\哈希算法.cpp 32 2 F:\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\bits\c++0x_warning.h [Error] #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options. 18 7 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' does not name a type 52 23 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' does not name a type 100 5 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' does not name a type 101 5 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' does not name a type 102 5 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' does not name a type 105 26 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' does not name a type 182 30 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' does not name a type 182 46 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' has not been declared 192 30 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' does not name a type 192 47 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' has not been declared 202 40 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' does not name a type C:\Users\余伟杰\Desktop\哈希算法.cpp In member function 'void MD5::reset()': 43 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'state' was not declared in this scope 47 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'count' was not declared in this scope 48 16 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'buffer' was not declared in this scope C:\Users\余伟杰\Desktop\哈希算法.cpp In member function 'void MD5::update(const int*, size_t)': 53 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' was not declared in this scope 55 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'index' was not declared in this scope 55 18 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'count' was not declared in this scope 60 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'partLen' was not declared in this scope 62 21 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'buffer' was not declared in this scope 64 18 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'i' was not declared in this scope 69 13 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'i' was not declared in this scope 71 17 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'buffer' was not 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