source: rtems/cpukit/include/rtems/gxx_wrappers.h @ 2afb22b

5
Last change on this file since 2afb22b 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: 1.9 KB
Line 
1/**
2 * @file rtems/gxx_wrappers.h
3 *
4 * RTEMS threads compatibility routines for libgcc2.
5 */
6
7/*
8 *  by: Rosimildo da Silva (rdasilva@connecttel.com)
9 *
10 *  Used ideas from:
11 *    W. Eric Norum
12 *    Canadian Light Source
13 *    University of Saskatchewan
14 *    Saskatoon, Saskatchewan, CANADA
15 *    eric@cls.usask.ca
16 *
17 *  Eric sent some e-mail in the rtems-list as a start point for this
18 *  module implementation.
19 */
20
21#ifndef __GCC_WRAPPERS_h
22#define __GCC_WRAPPERS_h
23
24#ifdef __cplusplus
25extern "C" {
26#endif /* __cplusplus */
27
28/**
29 *  @defgroup GxxWrappersSupport Gxx Wrappers Support
30 *
31 *  @ingroup libcsupport
32 *
33 *  @brief RTEMS Threads Compatibility Routines for Libgcc2
34 */
35
36/*
37 * These typedefs should match with the ones defined in the file
38 * gcc/gthr-rtems.h in the gcc distribution.
39 */
40typedef void *__gthread_key_t;
41typedef int   __gthread_once_t;
42typedef void *__gthread_mutex_t;
43typedef void *__gthread_recursive_mutex_t;
44
45int rtems_gxx_once(__gthread_once_t *once, void (*func) (void));
46
47int rtems_gxx_key_create (__gthread_key_t *key, void (*dtor) (void *));
48
49int rtems_gxx_key_delete (__gthread_key_t key);
50
51void *rtems_gxx_getspecific(__gthread_key_t key);
52
53int rtems_gxx_setspecific(__gthread_key_t key, const void *ptr);
54
55/*
56 * MUTEX support
57 */
58void rtems_gxx_mutex_init (__gthread_mutex_t *mutex);
59
60int rtems_gxx_mutex_lock (__gthread_mutex_t *mutex);
61
62int rtems_gxx_mutex_destroy (__gthread_mutex_t *mutex);
63
64int rtems_gxx_mutex_trylock (__gthread_mutex_t *mutex);
65
66int rtems_gxx_mutex_unlock (__gthread_mutex_t *mutex);
67
68void rtems_gxx_recursive_mutex_init(__gthread_recursive_mutex_t *mutex);
69
70int rtems_gxx_recursive_mutex_lock(__gthread_recursive_mutex_t *mutex);
71
72int rtems_gxx_recursive_mutex_trylock(__gthread_recursive_mutex_t *mutex);
73
74int rtems_gxx_recursive_mutex_unlock(__gthread_recursive_mutex_t *mutex);
75
76#ifdef __cplusplus
77}
78#endif /* __cplusplus */
79
80#endif /* __GCC_WRAPPERS_h */
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