source: rtems/cpukit/include/rtems/rtems/mp.h @ b7af3e44

5
Last change on this file since b7af3e44 was 2afb22b, checked in by Chris Johns <chrisj@…>, on 12/23/17 at 07:18:56

Remove make preinstall

A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.

This has at least seven problems:

  • The make preinstall step itself needs time and disk space.
  • Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error.
  • There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult.
  • The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit.
  • An introduction of a new build system is difficult.
  • Include paths specified by the -B option are system headers. This may suppress warnings.
  • The parallel build had sporadic failures on some hosts.

This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.

The new cpukit include directories are:

  • cpukit/include
  • cpukit/score/cpu/@RTEMS_CPU@/include
  • cpukit/libnetworking

The new BSP include directories are:

  • bsps/include
  • bsps/@RTEMS_CPU@/include
  • bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include

There are build tree include directories for generated files.

The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.

The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.

Update #3254.
  • Property mode set to 100644
File size: 1.1 KB
Line 
1/**
2 * @file rtems/rtems/mp.h
3 *
4 * @defgroup ClassicMP Multiprocessing
5 *
6 * @ingroup ClassicRTEMS
7 * @brief Multiprocessing Manager
8 *
9 * This include file contains all the constants and structures associated
10 * with the Multiprocessing Manager.
11 */
12
13/* COPYRIGHT (c) 1989-2013.
14 * On-Line Applications Research Corporation (OAR).
15 *
16 * The license and distribution terms for this file may be
17 * found in the file LICENSE in this distribution or at
18 * http://www.rtems.org/license/LICENSE.
19 */
20
21#ifndef _RTEMS_RTEMS_MP_H
22#define _RTEMS_RTEMS_MP_H
23
24/**
25 *  @defgroup ClassicMP Multiprocessing
26 *
27 *  @ingroup ClassicRTEMS
28 *
29 *  This encapsulates functionality related to the distributed
30 *  Multiprocessing support in the Classic API.
31 */
32/**@{*/
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38/**
39 *  @brief RTEMS Multiprocessing Announce
40 *
41 *  This routine implements the MULTIPROCESSING_ANNOUNCE directive.
42 *  It is invoked by the MPCI layer to indicate that an MPCI packet
43 *  has been received.
44 */
45void rtems_multiprocessing_announce ( void );
46
47#ifdef __cplusplus
48}
49#endif
50
51/**@}*/
52
53#endif
54/*  end of include file */
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