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From: hreba <f_hreba@yahoo.com.br>
Newsgroups: comp.lang.ada
Subject: Re: -fdump-ada-spec: "FILE" not declared
Date: Tue, 7 Apr 2020 19:19:44 +0200
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Xref: reader01.eternal-september.org comp.lang.ada:58322
Date: 2020-04-07T19:19:44+02:00
List-Id: <comp.lang.ada>

On 2020-04-07 19:10, hreba wrote:
> Hi,
> I am trying to generate Ada bindings for the GSL (Gnu Scientific 
> Library) odeiv2 package (ordinary differential equations). So I do the 
> following 2 steps:
> 1. Go to an empty directory "src" and execute
>     g++ -c -fdump-ada-spec -C /usr/include/gsl/gsl_odeiv2.h
> 2. Go to an empty directory "obj" and execute
>     gcc -c -gnat05 ../src/*.ads
> Unfortunately, gsl_odeiv2.h includes stdio.h, and this leads to a series 
> of errors like
> 
> stdio_h.ads:117:69: "FILE" not declared in
>      "x86_64_linux_gnu_bits_types_FILE_h"

Excuse me, only part of the message was transmitted. Continuing:

"FILE" _is_ declared. stdio.h includes <bits/types/FILE.h>, the complete 
content of which is

---------------------------------------------------------------------
#ifndef __FILE_defined
#define __FILE_defined 1

struct _IO_FILE;

/* The opaque type of streams.  This is the definition used elsewhere.  */
typedef struct _IO_FILE FILE;

#endif
----------------------------------------------------------------------

The definition of _IO_FILE I found in
	/usr/include/x86_64-linux-gnu/bits/libio.h
but when I include this additionally, I get
  # error "Never include <bits/libio.h> directly; use <stdio.h> instead."

Any idea?
-- 
Frank Hrebabetzky, Kronach	+49 / 9261 / 950 0565