newer gcc gives illegal syntax error in a header file - c++

Question

I've installed the mimetic library according to the INSTALL instructions.
the following main file compiles without a problem with a gcc-c++ 4.1.2,
but when I upgrade to gcc-c++ 4.4.7 I get an error.
mimetic.cpp:
#include <iostream>
#include <mimetic.h>
using namespace std;
using namespace mimetic;
int main()
{
MimeEntity me;
return 0;
}
error
In file included from /usr/local/include/mimetic/rfc822/header.h:18,
from /usr/local/include/mimetic/header.h:11,
from /usr/local/include/mimetic/mimetic.h:18,
from mimetic.cpp:2:
/usr/local/include/mimetic/rfc822/messageid.h:29: error: expected ‘)’ before ‘thread_id’
the header file:
rfc822/messageid.h
#ifndef _MIMETIC_MESSAGEID_H_
#define _MIMETIC_MESSAGEID_H_
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <string>
#include <mimetic/libconfig.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#include <mimetic/utils.h>
#include <mimetic/os/utils.h>
#include <mimetic/rfc822/fieldvalue.h>
namespace mimetic
{
/// Message-ID field value
/// On Win32 Winsock library must be initialized before using this class.
struct MessageId: public FieldValue
{
MessageId(uint32_t thread_id = 0 ); // <------ line 29
MessageId(const std::string&);
std::string str() const;
void set(const std::string&);
protected:
FieldValue* clone() const;
private:
static unsigned int ms_sequence_number;
std::string m_msgid;
};
}
#endif
is there some compatibility switch for the gcc ?

Answer 1

So, the problem turns out to be poor configuration of the system, which leaves HAVE_STDINT_H not configured, and thus the uint32_t doesn't get defined, and the error occurs.