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, 283 insertions, 0 deletions

diff --git a/cpukit/include/rtems/rfs/rtems-rfs-buffer.h b/cpukit/include/rtems/rfs/rtems-rfs-buffer.h
new file mode 100644
index 0000000000..1c603e1827
--- /dev/null
+++ b/cpukit/include/rtems/rfs/rtems-rfs-buffer.h
@@ -0,0 +1,283 @@
+/**
+ * @file
+ *
+ * @ingroup rtems_rfs
+ *
+ * @brief Maps Blocks to the Media Interface Layers
+ *
+ * These functions map blocks to the media interface layers.
+ */
+
+/*
+ *  COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
+ *
+ *  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.
+ */
+
+
+#if !defined (_RTEMS_RFS_BUFFER_H_)
+#define _RTEMS_RFS_BUFFER_H_
+
+#include <errno.h>
+
+#include <rtems/rfs/rtems-rfs-file-system-fwd.h>
+#include <rtems/rfs/rtems-rfs-trace.h>
+
+/**
+ * Define the method used to interface to the buffers. It can be libblock or
+ * device I/O. The libblock interface is to the RTEMS cache and block devices
+ * and device I/O accesses the media via a device file handle.
+ */
+#if defined (__rtems__)
+#define RTEMS_RFS_USE_LIBBLOCK 1
+#endif
+
+/**
+ * The RTEMS RFS I/O Layering.
+ */
+#if RTEMS_RFS_USE_LIBBLOCK
+#include <rtems/bdbuf.h>
+#include <rtems/error.h>
+
+typedef rtems_blkdev_bnum  rtems_rfs_buffer_block;
+typedef rtems_bdbuf_buffer rtems_rfs_buffer;
+#define rtems_rfs_buffer_io_request rtems_rfs_buffer_bdbuf_request
+#define rtems_rfs_buffer_io_release rtems_rfs_buffer_bdbuf_release
+
+/**
+ * Request a buffer from the RTEMS libblock BD buffer cache.
+ */
+int rtems_rfs_buffer_bdbuf_request (rtems_rfs_file_system* fs,
+                                    rtems_rfs_buffer_block block,
+                                    bool                   read,
+                                    rtems_rfs_buffer**     buffer);
+/**
+ * Release a buffer to the RTEMS libblock BD buffer cache.
+ */
+int rtems_rfs_buffer_bdbuf_release (rtems_rfs_buffer* handle,
+                                    bool              modified);
+#else /* Device I/O */
+typedef uint32_t rtems_rfs_buffer_block;
+typedef struct _rtems_rfs_buffer
+{
+  rtems_chain_node       link;
+  rtems_rfs_buffer_block user;
+  void*                  buffer;
+  size_t                 size;
+  uint32_t               references;
+} rtems_rfs_buffer;
+#define rtems_rfs_buffer_io_request rtems_rfs_buffer_deviceio_request
+#define rtems_rfs_buffer_io_release rtems_rfs_buffer_deviceio_release
+
+/**
+ * Request a buffer from the device I/O.
+ */
+int rtems_rfs_buffer_deviceio_request (rtems_rfs_file_system* fs,
+                                       rtems_rfs_buffer_block block,
+                                       bool                   read,
+                                       rtems_rfs_buffer*      buffer);
+/**
+ * Release a buffer to the RTEMS libblock BD buffer cache.
+ */
+int rtems_rfs_buffer_deviceio_release (rtems_rfs_buffer* handle,
+                                       bool              modified);
+#endif
+
+/**
+ * RFS Buffer handle.
+ */
+typedef struct rtems_rfs_buffer_handle_t
+{
+  /**
+   * Has the buffer been modifed?
+   */
+  bool dirty;
+
+  /**
+   * Block number. The lower layer block number may be absolute and we maybe
+   * relative to an offset in the disk so hold locally.
+   */
+  rtems_rfs_buffer_block bnum;
+
+  /**
+   * Reference the buffer descriptor.
+   */
+  rtems_rfs_buffer* buffer;
+
+} rtems_rfs_buffer_handle;
+
+/**
+ * The buffer linkage.
+ */
+#define rtems_rfs_buffer_link(_h) (&(_h)->buffer->link)
+
+/**
+ * Return the start of the data area of the buffer given a handle.
+ */
+#define rtems_rfs_buffer_data(_h) ((void*)((_h)->buffer->buffer))
+
+/**
+ * Return the size of the buffer given a handle.
+ */
+#define rtems_rfs_buffer_size(_h) ((_h)->buffer->size)
+
+/**
+ * Return the block number.
+ */
+#define rtems_rfs_buffer_bnum(_h) ((_h)->bnum)
+
+/**
+ * Return the buffer dirty status.
+ */
+#define rtems_rfs_buffer_dirty(_h) ((_h)->dirty)
+
+/**
+ * Does the handle have a valid block attached ?
+ */
+#define rtems_rfs_buffer_handle_has_block(_h) ((_h)->buffer ? true : false)
+
+/**
+ * Mark the buffer as dirty.
+ */
+#define rtems_rfs_buffer_mark_dirty(_h) ((_h)->dirty = true)
+
+/**
+ * Return the reference count.
+ */
+#define rtems_rfs_buffer_refs(_h) ((_h)->buffer->references)
+
+/**
+ * Increment the reference count.
+ */
+#define rtems_rfs_buffer_refs_up(_h) ((_h)->buffer->references += 1)
+
+/**
+ * Decrement the reference count.
+ */
+#define rtems_rfs_buffer_refs_down(_h) ((_h)->buffer->references -= 1)
+
+/**
+ * Request a buffer. The buffer can be filled with data from the media
+ * (read == true) or you can request a buffer to fill with data.
+ *
+ * @param[in] fs is the file system data.
+ * @param[in] handle is the handle the requested buffer is attached to.
+ * @param[in] block is the block number.
+ * @param[in] read Read the data from the disk.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffer_handle_request (rtems_rfs_file_system*   fs,
+                                     rtems_rfs_buffer_handle* handle,
+                                     rtems_rfs_buffer_block   block,
+                                     bool                     read);
+
+/**
+ * Release a buffer. If the buffer is dirty the buffer is written to disk. The
+ * result does not indicate if the data was successfully written to the disk as
+ * this operation may be performed in asynchronously to this release.
+ *
+ * @param[in] fs is the file system data.
+ * @param[in] handle is the handle the requested buffer is attached to.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffer_handle_release (rtems_rfs_file_system*   fs,
+                                     rtems_rfs_buffer_handle* handle);
+
+/**
+ * Open a handle.
+ *
+ * @param[in] fs i the file system data.
+ * @param[in] handle i the buffer handle to open.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+static inline int
+rtems_rfs_buffer_handle_open (rtems_rfs_file_system*   fs,
+                              rtems_rfs_buffer_handle* handle)
+{
+  handle->dirty = false;
+  handle->bnum  = 0;
+  handle->buffer = NULL;
+  return 0;
+}
+
+/**
+ * Close a handle.
+ *
+ * @param[in] fs is the file system data.
+ * @param[in] handle is the buffer handle to close.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+static inline int
+rtems_rfs_buffer_handle_close (rtems_rfs_file_system*   fs,
+                               rtems_rfs_buffer_handle* handle)
+{
+  rtems_rfs_buffer_handle_release (fs, handle);
+  handle->dirty = false;
+  handle->bnum  = 0;
+  handle->buffer = NULL;
+  return 0;
+}
+
+/**
+ * Open the buffer interface.
+ *
+ * @param[in] name is a pointer to the device name to the media.
+ * @param[in] fs is the file system data.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffer_open (const char* name, rtems_rfs_file_system* fs);
+
+/**
+ * Close the buffer interface.
+ *
+ * @param[in] fs is the file system data.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffer_close (rtems_rfs_file_system* fs);
+
+/**
+ * Sync all buffers to the media.
+ *
+ * @param[in] fs is the file system data.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffer_sync (rtems_rfs_file_system* fs);
+
+/**
+ * Set the block size of the device.
+ *
+ * @param[in] fs is the file system data.
+ * @param[in] size is the new block size.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffer_setblksize (rtems_rfs_file_system* fs, uint32_t size);
+
+/**
+ * Release any chained buffers.
+ *
+ * @param[in] fs is the file system data.
+ *
+ * @retval 0 Successful operation.
+ * @retval error_code An error occurred.
+ */
+int rtems_rfs_buffers_release (rtems_rfs_file_system* fs);
+
+#endif