source: rtems/cpukit/include/rtems/score/stack.h @ 21275b58

Last change on this file since 21275b58 was 2afb22b, checked in by Chris Johns <chrisj@…>, on Dec 23, 2017 at 7:18:56 AM

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: 1.5 KB
Line 
1/**
2 *  @file  rtems/score/stack.h
3 *
4 *  @brief Information About the Thread Stack Handler
5 *
6 *  This include file contains all information about the thread
7 *  Stack Handler.  This Handler provides mechanisms which can be used to
8 *  initialize and utilize stacks.
9 */
10
11/*
12 *  COPYRIGHT (c) 1989-2006.
13 *  On-Line Applications Research Corporation (OAR).
14 *
15 *  The license and distribution terms for this file may be
16 *  found in the file LICENSE in this distribution or at
17 *  http://www.rtems.org/license/LICENSE.
18 */
19
20#ifndef _RTEMS_SCORE_STACK_H
21#define _RTEMS_SCORE_STACK_H
22
23#include <rtems/score/basedefs.h>
24
25#ifdef __cplusplus
26extern "C" {
27#endif
28
29/**
30 *  @defgroup ScoreStack Stack Handler
31 *
32 *  @ingroup Score
33 *
34 *  This handler encapsulates functionality which is used in the management
35 *  of thread stacks.
36 */
37/**@{*/
38
39/**
40 *  The following constant defines the minimum stack size which every
41 *  thread must exceed.
42 */
43#define STACK_MINIMUM_SIZE  CPU_STACK_MINIMUM_SIZE
44
45/**
46 *  The following defines the control block used to manage each stack.
47 */
48typedef struct {
49  /** This is the stack size. */
50  size_t      size;
51  /** This is the low memory address of stack. */
52  void       *area;
53}   Stack_Control;
54
55/**
56 *  This variable contains the the minimum stack size;
57 *
58 *  @note It is instantiated and set by User Configuration via confdefs.h.
59 */
60extern uint32_t rtems_minimum_stack_size;
61
62/**@}*/
63
64#ifdef __cplusplus
65}
66#endif
67
68#endif
69/* end of include file */
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