error: 'memcpy' was not declared in this scope

最新推荐文章于 2022-12-30 10:23:07 发布
原创 最新推荐文章于 2022-12-30 10:23:07 发布 · 1.6w 阅读 · 2 ·
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本文记录了一次在进行实时传输软件安装过程中遇到的make报错问题。错误信息提示为未在作用域内声明'memcpy'。通过在源代码中引入<string.h>头文件解决了该问题，最终成功完成了软件的安装。

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最近要做些实时传输方面的东西，做过才发现这东西不好找，也不好装
那本以为能顺顺利利装好，装得时候很郁闷，make老是报我错：
make
这一步就出问题了。
sdh_pocket_reader.cpp:208: error: 'memcpy' was not declared in this scope
不知道是不是有很多人会出现这种情况导致装不了，但是我会出现同样的错误。其实解决办法很容易，到程序中加上头文件string.h就好了，就是#include<string.h>
，同样的方法就能处理。改完后在make 在make install就顺利装上了l。

error: ‘memcpy’ was not declared in this scope 解决
ghui's world
01-05 2万+
0. 在编译librangetree-v1.2（C++ 2D 范围树）时，出现 error: ‘memcpy’ was not declared in this scope 错误，原因是没有包含相关头文件 1. 错误如下： [ghui@StuOS librangetree-v1.2]$ pwd /home/Ghui/Desktop/librangetree-v1.2 [ghui@StuOS l
Fixed itk-3.20.1 on gcc-4.8, error: ‘memcpy’ was not declared in this scope
每天进步一点
12-30 3301
实践证明InsightToolkit-3.20.1.tar.gz在Ubuntu 12.04，64bit，gcc 4.8/gcc 4.7版本上编译都会报同一个错误“‘memcpy’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive]”。解决方法是：降级为gcc 4.6版本，100%完成通过。
error: 'memcpy' was not declared in this scope的解决
送人玫瑰，手有余香。
06-05 1万+
其实解决办法很容易，到rtppack.cpp中加上头文件string.h就好了，就是#include
我的头文件(不断更新)
lin的博客
04-10 540
#include&lt;set&gt; #include&lt;map&gt; #include&lt;cmath&gt; #include&lt;stack&gt; #include&lt;queue&gt; #include&lt;vector&gt; #include&lt;string&gt; #include&lt;cstdio&gt; #include&lt;c
error: 'memcpy' was not declared in this scope的解决 [转]
weixin_30724853的博客
07-04 343
其实解决办法很容易，到rtppack.cpp中加上头文件string.h就好了，就是#include<string.h> 转载于:https://www.cnblogs.com/rooney/archive/2012/07/04/2576947.html
error: ‘memcpy’ was not declared in this scope
07-16
`<cstring>` 头文件中包含了 `memcpy` 函数的声明。请确保在使用 `memcpy` 函数之前先包含 `<cstring>` 头文件，例如： ```cpp #include // 在需要使用 memcpy 函数的地方调用它 ``` 这样应该能解决这个错误。...
735 61 C:\Users\dell\Documents\答辩.cpp [Error] 'memcpy' was not declared in this scope
06-28
在 C 语言中使用 `memcpy` 函数时出现 `'memcpy was not declared in this scope'` 错误，通常由以下原因引起。以下是完整的解决方案： #### 1. 包含必需的头文件 `memcpy` 函数声明在 **`<string.h>`** 头文件中，...
Linux安装编译mwget报错strcmp’ was not declared in this scope
图挖掘领域，新晋砖家 ☞ 未来可期，欢迎和静静一起学习交流吖
01-28 1055
1、问题 在执行make时报错 make all-recursive make[1]: Entering directory '/home/lj/software/mwget_0.1.0.orig' Making all in mach-info make[2]: Entering directory '/home/lj/software/mwget_0.1.0.orig/mach-info' make[2]: Nothing to be done for 'all'. make[2]: Leav
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 declared in this scope 71 39 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'i' was not declared in this scope C:\Users\余伟杰\Desktop\哈希算法.cpp In member function 'std::string MD5::final()': 76 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' was not declared in this scope 77 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' was not declared in this scope 78 17 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected ';' before 'digest' 79 22 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' does not name a type 82 16 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'count' was not declared in this scope 82 23 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'bits' was not declared in this scope 85 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'index' was not declared in this scope 86 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'padLen' was not declared in this scope 87 16 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'PADDING' was not declared in this scope 93 16 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'state' was not declared in this scope 93 23 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'digest' was not declared in this scope C:\Users\余伟杰\Desktop\哈希算法.cpp In member function 'void MD5::transform(const int*)': 106 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' was not declared in this scope 107 18 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected ';' before 'x' 109 23 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'x' was not declared in this scope 112 12 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'a' was not declared in this scope 112 15 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'b' was not declared in this scope 112 18 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'c' was not declared in this scope 112 21 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'd' was not declared in this scope 112 35 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'T' was not declared in this scope 112 39 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'FF' was not declared in this scope 122 40 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'GG' was not declared in this scope 132 40 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'HH' was not declared in this scope 142 40 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'II' was not declared in this scope 151 9 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'state' was not declared in this scope C:\Users\余伟杰\Desktop\哈希算法.cpp In static member function 'static void MD5::decode(const int*, int*, size_t)': 184 27 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint32_t' was not declared in this scope 184 36 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected ')' before 'input' C:\Users\余伟杰\Desktop\哈希算法.cpp In function 'int main()': 219 39 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected '>' before 'uint8_t' 219 39 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected '(' before 'uint8_t' 219 39 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] 'uint8_t' was not declared in this scope 219 47 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected primary-expression before '>' token 228 43 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected '>' before 'uint8_t' 228 43 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected '(' before 'uint8_t' 228 51 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected primary-expression before '>' token 232 43 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected '>' before 'uint8_t' 232 43 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected '(' before 'uint8_t' 232 51 C:\Users\余伟杰\Desktop\哈希算法.cpp [Error] expected primary-expression before '>' token 修改代码
最新发布
07-07
error: 'memcpy' was not declared in this scope ``` **解决方案**: ```cpp #include <cstring> // 提供 memset, memcpy 等函数 ``` #### 完整修正后的头文件部分 ```cpp #include #include <cstring> // 内存...
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************/cuda/cfd$ make nvcc -O2 -Xptxas -v --gpu-architecture=compute_20 --gpu-code=compute_20 euler3d.cu -o euler3d -I/usr/local/cuda-9.0/samples//common/inc -L/usr/local/cuda-9.0/samples//li...
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Compiling on a clean install of Ubuntu 16.04 with cmake and using CUDA from the repo. get the following error: /usr/include/string.h: In function ‘void* __mempcpy_inline(void*, const void*, size_t
关于g++ memcpy’ was not declared in this scope解决方法
shenyan008的专栏
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关于g++ memcpy’ was not declared in this scope解决方法<br /> 使用如下2行即可<br /> #include<iostream><br /> #include <cstring> 地址：http://blog.chinaunix.net/u1/38994/showart_2187440.html<br />
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编译caffe时，是在ubuntu16上，gcc5，报错什么 /usr/include/string.h ...   __inline_memcpy_ ...  memcpy not declared的错误， 查资料说是caffe只支持gcc4.9以下的。 我打开/usr/include/string.h, 搜索memcpy, 在低版本的gcc比如4.7里面，可以找到3个匹配，而在gcc5
Build caffe fails on Ubuntu 16.04 (‘memcpy’ was not declared in this scope)
eagelangel的专栏
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You could try to pass an argument (CXX_FLAGS) to the compiler -D_FORCE_INLINES by editing the CMAKE files (for example: set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_FORCE_INLINES")) or makefiles. S
【报错】C/C++作用域内未声明问题：error: ‘XXX‘ was not declared in this scope
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