[unsolved] gcc 12.1.2-2 and stdlib.h for a c++ program

Kissarch · 2023-03-04 12:33:43

Hello
Please,
while testing a package from PKGBUILD with makepkg,
in "make check"
(it builds normally with the --nocheck option, check and tests do not always run fine...)

I had this error message:

gcc 12.1.2-2 and stdlib.h for a c++ program

...
/usr/include/c++/12.2.1/cstdlib:75:15: fatal error: stdlib.h: No such file or directory
   75 | #include_next <stdlib.h>
      |               ^~~~~~~~~~
compilation terminated.
...
make: *** [Makefile:242: check-tcl-examples] Error 2
==> ERROR: A failure occurred in check().
    Aborting...

impossible to find "stdlib.h" in /usr/include/c++/12.2.1/
nor a package with it !

A search of stdlib.h find many of "stdlib.h"

find /usr  -name stdlib.h

had found many stdlib.h : which one is the good one, or is there a good one ?

/usr/share/klee-uclibc/usr/include/stdlib.h
/usr/share/manul/dbi_clients_src/pin/pin-3.6-97554-g31f0a167d-gcc-linux/extras/crt/include/stdlib.h
/usr/share/manul/dbi_clients_src/pin/pin-3.6-97554-g31f0a167d-gcc-linux/extras/stlport/include/stdlib.h
/usr/share/pin/extras/crt/include/stdlib.h
/usr/share/pin/extras/stlport/include/stdlib.h
...

and probably none is the good one, I mean the same as needed...
What seem important for this problem is

less /usr/include/c++/12.2.1/cstdlib

is here:

#if !_GLIBCXX_HOSTED
// The C standard does not require a freestanding implementation to
// provide <stdlib.h>.  However, the C++ standard does still require
// <cstdlib> -- but only the functionality mentioned in
// [lib.support.start.term].

#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1


namespace std
{
  extern "C" void abort(void) throw () _GLIBCXX_NORETURN;
  extern "C" int atexit(void (*)(void)) throw ();
  extern "C" void exit(int) throw () _GLIBCXX_NORETURN;
#if __cplusplus >= 201103L
# ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
  extern "C" int at_quick_exit(void (*)(void)) throw ();
# endif
# ifdef _GLIBCXX_HAVE_QUICK_EXIT
  extern "C" void quick_exit(int) throw() _GLIBCXX_NORETURN;
# endif
#endif
} // namespace std

#else

// Need to ensure this finds the C library's <stdlib.h> not a libstdc++
// wrapper that might already be installed later in the include search path.
#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
#include_next <stdlib.h>
#undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS
#include <bits/std_abs.h>

So the important thinks are:
1) to unset _GLIBCXX_HOSTED to avoid running the #else directive

_GLIBCXX_HOSTED

2) or find the good <stdlib.h> mentioned in

 #include_next

like written here:

// Need to ensure this finds the C library's <stdlib.h> not a libstdc++
// wrapper that might already be installed later in the include search path.
#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
#include_next <stdlib.h>

Any idea ?

Thanks by advance !

Last edited by Kissarch (2023-03-04 12:46:19)

Trilby · 2023-03-04 12:49:27

What package is this? The problem is most likely the include path which can be impacted by a wide range of compiler flags.

Also, why is this thread's title include [unsolved]?

Last edited by Trilby (2023-03-04 12:49:42)

Lone_Wolf · 2023-03-04 16:54:46

Kissarch wrote:

impossible to find "stdlib.h" in /usr/include/c++/12.2.1/
nor a package with it !

$ pacman -Ql gcc | grep stdlib.h
gcc /usr/include/c++/12.2.1/stdlib.h
gcc /usr/include/c++/12.2.1/tr1/stdlib.h
$

Looks like something is very wrong with your gcc installation .

please post

pacman -Qkk gcc

Incase that doesn't show errros with gcc, answer trilby's questions.

Trilby · 2023-03-04 17:10:56

Lone_Wolf, that's not the stdlib.h that is being included there. That line is including c stdlin or glibc's /usr/include/stdlib.h.

Arch Linux

#1 2023-03-04 12:33:43

[unsolved] gcc 12.1.2-2 and stdlib.h for a c++ program

#2 2023-03-04 12:49:27

Re: [unsolved] gcc 12.1.2-2 and stdlib.h for a c++ program

#3 2023-03-04 16:54:46

Re: [unsolved] gcc 12.1.2-2 and stdlib.h for a c++ program

#4 2023-03-04 17:10:56

Re: [unsolved] gcc 12.1.2-2 and stdlib.h for a c++ program

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