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.

1 files changed, 213 insertions, 0 deletions

diff --git a/cpukit/include/rtems/posix/shm.h b/cpukit/include/rtems/posix/shm.h
new file mode 100644
index 0000000000..d2b6036493
--- /dev/null
+++ b/cpukit/include/rtems/posix/shm.h
@@ -0,0 +1,213 @@
+/**
+ * @file
+ *
+ * @brief Internal Support for POSIX Shared Memory
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_POSIX_SHM_H
+#define _RTEMS_POSIX_SHM_H
+
+#include <rtems/score/object.h>
+#include <rtems/score/threadq.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup POSIXShmPrivate POSIX Shared Memory Private Support
+ *
+ * @ingroup POSIXAPI
+ *
+ * Internal implementation support for POSIX shared memory.
+ * @{
+ */
+typedef struct POSIX_Shm_Object_operations POSIX_Shm_Object_operations;
+extern const POSIX_Shm_Object_operations _POSIX_Shm_Object_operations;
+
+/**
+ * @brief Encapsulation for the storage and manipulation of shm objects.
+ */
+typedef struct {
+  /**
+   * @brief The handle is private for finding object storage.
+   */
+  void                               *handle;
+
+  /**
+   * @brief The number of bytes allocated to the object. A size of 0 with
+   * a handle of NULL means no object is allocated.
+   */
+  size_t                              size;
+
+  /**
+   * @brief Implementation-specific operations on shm objects.
+   */
+  const POSIX_Shm_Object_operations  *ops;
+} POSIX_Shm_Object;
+
+/**
+ * @brief Operations on POSIX Shared Memory Objects.
+ */
+struct POSIX_Shm_Object_operations {
+  /**
+   * @brief Allocates a new @a shm_obj with initial @a size.
+   *
+   * New shared memory is initialized to zeroes.
+   *
+   * Returns 0 for success.
+   */
+  int ( *object_create ) ( POSIX_Shm_Object *shm_obj, size_t size );
+
+  /**
+   * @brief Changes the @a shm_obj size to @a size.
+   *
+   * Zeroes out the portion of the shared memory object that shrinks or grows.
+   *
+   * Returns 0 for success.
+   */
+  int ( *object_resize ) ( POSIX_Shm_Object *shm_obj, size_t size );
+
+  /**
+   * @brief Deletes the @a shm_obj.
+   *
+   * Zeroes out the memory.
+   *
+   * Returns 0 for success.
+   */
+  int ( *object_delete ) ( POSIX_Shm_Object *shm_obj );
+
+  /**
+   * @brief Copies up to @count bytes of the @a shm_obj data into @a buf.
+   *
+   * Returns the number of bytes read (copied) into @a buf.
+   */
+  int ( *object_read ) ( POSIX_Shm_Object *shm_obj, void *buf, size_t count );
+
+  /**
+   * @brief Maps a shared memory object.
+   *
+   * Establishes a memory mapping between the shared memory object and the
+   * caller.
+   *
+   * Returns the mapped address of the object.
+   */
+  void * ( *object_mmap ) ( POSIX_Shm_Object *shm_obj, size_t len, int prot, off_t off);
+};
+
+/**
+ * @brief Control for a POSIX Shared Memory Object
+ */
+typedef struct {
+   Objects_Control      Object;
+   Thread_queue_Control Wait_queue;
+
+   int                  reference_count;
+
+   POSIX_Shm_Object     shm_object;
+
+   uid_t                uid;
+   gid_t                gid;
+   mode_t               mode;
+   int                  oflag;
+
+   time_t               atime;
+   time_t               mtime;
+   time_t               ctime;
+} POSIX_Shm_Control;
+
+/**
+ * @brief object_create operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_create_from_workspace(
+  POSIX_Shm_Object *shm_obj,
+  size_t size
+);
+
+/**
+ * @brief object_delete operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_delete_from_workspace( POSIX_Shm_Object *shm_obj );
+
+/**
+ * @brief object_resize operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_resize_from_workspace(
+  POSIX_Shm_Object *shm_obj,
+  size_t size
+);
+
+/**
+ * @brief object_read operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_read_from_workspace(
+  POSIX_Shm_Object *shm_obj,
+  void *buf,
+  size_t count
+);
+
+/**
+ * @brief object_mmap operation for shm objects stored in RTEMS Workspace.
+ */
+extern void * _POSIX_Shm_Object_mmap_from_workspace(
+  POSIX_Shm_Object *shm_obj,
+  size_t len,
+  int prot,
+  off_t off
+);
+
+/**
+ * @brief object_create operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_create_from_heap(
+  POSIX_Shm_Object *shm_obj,
+  size_t size
+);
+
+/**
+ * @brief object_delete operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_delete_from_heap( POSIX_Shm_Object *shm_obj );
+
+/**
+ * @brief object_resize operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_resize_from_heap(
+  POSIX_Shm_Object *shm_obj,
+  size_t size
+);
+
+/**
+ * @brief object_read operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_read_from_heap(
+  POSIX_Shm_Object *shm_obj,
+  void *buf,
+  size_t count
+);
+
+/**
+ * @brief object_mmap operation for shm objects stored in C program heap.
+ */
+extern void * _POSIX_Shm_Object_mmap_from_heap(
+  POSIX_Shm_Object *shm_obj,
+  size_t len,
+  int prot,
+  off_t off
+);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif