source: rtems/bsps/include/mpci.h @ 762fa62

5
Last change on this file since 762fa62 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: 1.2 KB
Line 
1/*  mpci.h
2 *
3 *  This include file contains all the renaming necessary to
4 *  have an application use the Shared Memory Driver as its
5 *  sole mechanism for MPCI.
6 *
7 *  COPYRIGHT (c) 1989-1999.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.rtems.org/license/LICENSE.
13 */
14
15#ifndef __SHM_MPCI_h
16#define __SHM_MPCI_h
17
18#ifdef __cplusplus
19extern "C" {
20#endif
21
22#include <shm_driver.h>
23
24#define MPCI_Initialization( _configuration ) \
25  Shm_Initialization( _configuration )
26
27#define MPCI_Get_packet( _the_packet ) \
28  Shm_Get_packet( _the_packet )
29
30#define MPCI_Return_packet( _the_packet ) \
31  Shm_Return_packet( _the_packet )
32
33#define MPCI_Receive_packet( _the_packet ) \
34  Shm_Receive_packet( _the_packet )
35
36#define MPCI_Send_packet( _destination, _the_packet ) \
37  Shm_Send_packet( _destination, _the_packet )
38
39/* Unnecessary... mapped in shm_driver.h
40#define MPCI_Fatal( _the_error ) \
41  Shm_Fatal( _the_error )
42*/
43
44#define MPCI_Enable_statistics()
45
46#define MPCI_Print_statistics() \
47  Shm_Print_statistics()
48
49/* no need to rename the MPCI_Table either */
50
51#ifdef __cplusplus
52}
53#endif
54
55#endif
56/* end of include file */
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