error: '::memchr' has not been declared #12

nlohmann · 2016-12-12T17:37:45Z

Using the release version 8.2.0, the following file cannot be compiled with g++-5 -Ietl-8.2.0/src testetl.cpp -o testetl -std=c++11 using g++-5 (Homebrew gcc5 5.4.0) 5.4.0 on macOS 10.12.1.

#include <vector.h>
#include <string.h>

int main()
{
    return 0;
}

Errors:

In file included from etl-8.2.0/src/ibasic_string.h:39:0,
                 from etl-8.2.0/src/basic_string.h:38,
                 from etl-8.2.0/src/string.h:35,
                 from testetl.cpp:2:
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:75:11: error: '::memchr' has not been declared
   using ::memchr;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:76:11: error: '::memcmp' has not been declared
   using ::memcmp;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:77:11: error: '::memcpy' has not been declared
   using ::memcpy;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:78:11: error: '::memmove' has not been declared
   using ::memmove;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:79:11: error: '::memset' has not been declared
   using ::memset;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:80:11: error: '::strcat' has not been declared
   using ::strcat;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:81:11: error: '::strcmp' has not been declared
   using ::strcmp;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:82:11: error: '::strcoll' has not been declared
   using ::strcoll;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:83:11: error: '::strcpy' has not been declared
   using ::strcpy;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:84:11: error: '::strcspn' has not been declared
   using ::strcspn;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:85:11: error: '::strerror' has not been declared
   using ::strerror;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:86:11: error: '::strlen' has not been declared
   using ::strlen;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:87:11: error: '::strncat' has not been declared
   using ::strncat;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:88:11: error: '::strncmp' has not been declared
   using ::strncmp;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:89:11: error: '::strncpy' has not been declared
   using ::strncpy;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:90:11: error: '::strspn' has not been declared
   using ::strspn;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:91:11: error: '::strtok' has not been declared
   using ::strtok;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:92:11: error: '::strxfrm' has not been declared
   using ::strxfrm;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:93:11: error: '::strchr' has not been declared
   using ::strchr;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:94:11: error: '::strpbrk' has not been declared
   using ::strpbrk;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:95:11: error: '::strrchr' has not been declared
   using ::strrchr;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:96:11: error: '::strstr' has not been declared
   using ::strstr;
           ^

The same errors occur with GCC 4.9.3 and GCC 6.2.0 with the same compiler flags.

The text was updated successfully, but these errors were encountered:

jwellbelove · 2016-12-12T20:24:38Z

It may be that the compiler is picking up ETL's string.h instead of the C library's version.
You may have to play around with the include directory paths.
I think it can happen if you set the include path directly to etl/src/
If you set the path to the one containing the ETL library then you can #include "etl/src/..."
Hope that helps.

nlohmann · 2016-12-12T20:54:51Z

Sorry, I don't get it to work.

I tried

#include "etl-8.2.0/src/vector.h"
#include "etl-8.2.0/src/string.h"

int main()
{
    return 0;
}

and ran g++-5 testetl.cpp -o testetl -std=c++11 (the file testetl.cpp is in a directory that contains the release directory etl-8.2.0). The error message is

In file included from etl-8.2.0/src/ivector.h:904:0,
                 from etl-8.2.0/src/vector.h:38,
                 from testetl.cpp:1:
etl-8.2.0/src/private/ivectorpointer.h:38:33: fatal error: private/pvoidvector.h: No such file or directory
compilation terminated.

When I add -I etl-8.2.0/src to resolve private/pvoidvector.h, I get

In file included from etl-8.2.0/src/ibasic_string.h:39:0,
                 from etl-8.2.0/src/basic_string.h:38,
                 from etl-8.2.0/src/string.h:35,
                 from testetl.cpp:2:
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:75:11: error: '::memchr' has not been declared
   using ::memchr;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:76:11: error: '::memcmp' has not been declared
   using ::memcmp;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:77:11: error: '::memcpy' has not been declared
   using ::memcpy;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:78:11: error: '::memmove' has not been declared
   using ::memmove;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:79:11: error: '::memset' has not been declared
   using ::memset;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:80:11: error: '::strcat' has not been declared
   using ::strcat;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:81:11: error: '::strcmp' has not been declared
   using ::strcmp;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:82:11: error: '::strcoll' has not been declared
   using ::strcoll;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:83:11: error: '::strcpy' has not been declared
   using ::strcpy;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:84:11: error: '::strcspn' has not been declared
   using ::strcspn;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:85:11: error: '::strerro' has not been declared
   using ::strerror;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:86:11: error: '::strlen' has not been declared
   using ::strlen;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:87:11: error: '::strncat' has not been declared
   using ::strncat;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:88:11: error: '::strncmp' has not been declared
   using ::strncmp;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:89:11: error: '::strncpy' has not been declared
   using ::strncpy;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:90:11: error: '::strspn' has not been declared
   using ::strspn;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:91:11: error: '::strtok' has not been declared
   using ::strtok;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:92:11: error: '::strxfrm' has not been declared
   using ::strxfrm;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:93:11: error: '::strchr' has not been declared
   using ::strchr;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:94:11: error: '::strpbrk' has not been declared
   using ::strpbrk;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:95:11: error: '::strrchr' has not been declared
   using ::strrchr;
           ^
/usr/local/Cellar/gcc5/5.4.0/include/c++/5.4.0/cstring:96:11: error: '::strstr' has not been declared
   using ::strstr;
           ^

jwellbelove · 2016-12-13T20:01:21Z

Hi Niel,

Sorry to hear you're still having issues.

private/pvoidvector.h is an error.
It should be just pvoidvector.h

I've updated the file in the master branch

As for the other errors, could you try changing the cstring include in the classes to string.h and see if it makes a difference?

John.

jwellbelove · 2017-01-01T08:25:07Z

I've changed the name of string.h to cstring.h which seems to solve the issues you are seeing. The code is on theme master branch.

IAMFINN · 2020-02-06T05:17:34Z

same question,Do you fixed?

jwellbelove · 2020-02-06T12:45:57Z

It is fixed as far as I know

nlohmann mentioned this issue Dec 13, 2016

Check if library can be used with ETL nlohmann/json#361

Closed

jwellbelove closed this as completed Feb 6, 2020

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error: '::memchr' has not been declared #12

error: '::memchr' has not been declared #12

nlohmann commented Dec 12, 2016

jwellbelove commented Dec 12, 2016

nlohmann commented Dec 12, 2016

jwellbelove commented Dec 13, 2016 •

edited

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jwellbelove commented Jan 1, 2017

IAMFINN commented Feb 6, 2020

jwellbelove commented Feb 6, 2020

error: '::memchr' has not been declared #12

error: '::memchr' has not been declared #12

Comments

nlohmann commented Dec 12, 2016

jwellbelove commented Dec 12, 2016

nlohmann commented Dec 12, 2016

jwellbelove commented Dec 13, 2016 • edited Loading

jwellbelove commented Jan 1, 2017

IAMFINN commented Feb 6, 2020

jwellbelove commented Feb 6, 2020

jwellbelove commented Dec 13, 2016 •

edited

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