Support for Clang with "-fgnuc-version=0". Previously, the code assumed that Clang pretends to be GCC and defines the __GNUC__ macro, which might not be the case if the "-fgnuc-version=0" flag is used. Fix is to explicitly check for __clang__ as well. In practice, with this change ngx_cpuinfo() is now available on Linux with "-fgnuc-version=0".

/*
 * Copyright (C) Maxim Dounin
 * Copyright (C) Nginx, Inc.
 */


#include <ngx_config.h>
#include <ngx_core.h>


#if (NGX_HAVE_DLOPEN)

char *
ngx_dlerror(void)
{
    char  *err;

    err = (char *) dlerror();

    if (err == NULL) {
        return "";
    }

    return err;
}

#endif