Error using loadlibrary --- fatal error: cstdint: No such file or directory

Hi,

I am trying to load a custom written '.so' library in MATLAB 2020b running on Ubuntu 18.04 using the 'loadlibrary' function. However, I get these errors:

Failed to preprocess the input file.

Output from preprocessor is:/usr/lib/tracker/libtracker.h:1:9: warning: #pragma once in main file

1 | #pragma once

| ^~~~

/usr/lib/tracker/libtracker.h:3:10: fatal error: cstdint: No such file or directory

3 | #include <cstdint>

| ^~~~~~~~~

compilation terminated.

I checked the gcc verison using '!gcc - v' and this is what I have

Using built-in specs.

COLLECT_GCC=gcc

COLLECT_LTO_WRAPPER=/usr/local/bin/gcc-10.2.0/libexec/gcc/x86_64-linux-gnu/10.2.0/lto-wrapper

Target: x86_64-linux-gnu

Configured with: ../gcc-10.2.0/configure -v --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --prefix=/usr/local/bin/gcc-10.2.0 --enable-checking=release --enable-languages=c,c++,fortran --disable-multilib --program-suffix=-10.2

Thread model: posix

Supported LTO compression algorithms: zlib

gcc version 10.2.0 (GCC)

Also, I can load this library in python using ctypes on the same machine.

This is what we have in the top of the library header file:

#pragma once

#include <cstdint>

extern "C" {

....

...

}

Any help would be much appreciated.

Answer 1

[Yongjian Feng]

This header file requires C++11.