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, 227 insertions, 0 deletions

diff --git a/cpukit/include/rtems/ramdisk.h b/cpukit/include/rtems/ramdisk.h
new file mode 100644
index 0000000000..727efddbe8
--- /dev/null
+++ b/cpukit/include/rtems/ramdisk.h
@@ -0,0 +1,227 @@
+/**
+ * @file
+ *
+ * @brief RAM Disk Block Device API
+ */
+
+/*
+ * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
+ * Author: Victor V. Vengerov <vvv@oktet.ru>
+ */
+
+#ifndef _RTEMS_RAMDISK_H
+#define _RTEMS_RAMDISK_H
+
+
+#include <rtems.h>
+#include <rtems/blkdev.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup rtems_ramdisk RAM Disk Device
+ *
+ * @ingroup rtems_blkdev
+ *
+ */
+/**@{**/
+
+/**
+ * @name Static Configuration
+ */
+/**@{**/
+
+/**
+ * @brief RAM disk configuration table entry.
+ */
+typedef struct rtems_ramdisk_config {
+  /**
+   * @brief RAM disk block size.
+   */
+  uint32_t block_size;
+
+  /**
+   * @brief Number of blocks on this RAM disk.
+   */
+  rtems_blkdev_bnum block_num;
+
+  /**
+   * @brief RAM disk location or @c NULL if RAM disk memory should be allocated
+   * dynamically.
+   */
+  void *location;
+} rtems_ramdisk_config;
+
+/**
+ * @brief External reference to the RAM disk configuration table describing
+ * each RAM disk in the system.
+ *
+ * The configuration table is provided by the application.
+ */
+extern rtems_ramdisk_config rtems_ramdisk_configuration [];
+
+/**
+ * @brief External reference the size of the RAM disk configuration table
+ * @ref rtems_ramdisk_configuration.
+ *
+ * The configuration table size is provided by the application.
+ */
+extern size_t rtems_ramdisk_configuration_size;
+
+/**
+ * @brief RAM disk driver initialization entry point.
+ */
+rtems_device_driver ramdisk_initialize(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void *arg
+);
+
+/**
+ * RAM disk driver table entry.
+ */
+#define RAMDISK_DRIVER_TABLE_ENTRY \
+  { \
+    .initialization_entry = ramdisk_initialize, \
+    RTEMS_GENERIC_BLOCK_DEVICE_DRIVER_ENTRIES \
+  }
+
+#define RAMDISK_DEVICE_BASE_NAME "/dev/rd"
+
+/** @} */
+
+/**
+ * @name Runtime Configuration
+ */
+/**@{**/
+
+/**
+ * @brief RAM disk descriptor.
+ */
+typedef struct ramdisk {
+  /**
+   * @brief RAM disk block size, the media size.
+   */
+  uint32_t block_size;
+
+  /**
+   * @brief Number of blocks on this RAM disk.
+   */
+  rtems_blkdev_bnum block_num;
+
+  /**
+   * @brief RAM disk memory area.
+   */
+  void *area;
+
+  /**
+   * @brief RAM disk is initialized.
+   */
+  bool initialized;
+
+  /**
+   * @brief Indicates if memory is allocated by malloc() for this RAM disk.
+   */
+  bool malloced;
+
+  /**
+   * @brief Trace enable.
+   */
+  bool trace;
+
+  /**
+   * @brief Free the RAM disk at the block device delete request.
+   */
+  bool free_at_delete_request;
+} ramdisk;
+
+extern const rtems_driver_address_table ramdisk_ops;
+
+int ramdisk_ioctl(rtems_disk_device *dd, uint32_t req, void *argp);
+
+/**
+ * @brief Allocates and initializes a RAM disk descriptor.
+ *
+ * The block size will be @a media_block_size.  The block count will be
+ * @a media_block_count.  The disk storage area begins at @a area_begin.  If
+ * @a area_begin is @c NULL, the memory will be allocated and zeroed.  Sets the
+ * trace enable to @a trace.
+ *
+ * @return Pointer to allocated and initialized ramdisk structure, or @c NULL
+ * if no memory is available.
+ *
+ * @note
+ * Runtime configuration example:
+ * @code
+ * #include <rtems/ramdisk.h>
+ *
+ * rtems_status_code create_ramdisk(
+ *   const char *device,
+ *   uint32_t media_block_size,
+ *   rtems_blkdev_bnum media_block_count
+ * )
+ * {
+ *   rtems_status_code sc;
+ *   ramdisk *rd;
+ *
+ *   rd = ramdisk_allocate(NULL, media_block_size, media_block_count, false);
+ *   if (rd != NULL) {
+ *     sc = rtems_blkdev_create(
+ *       device,
+ *       media_block_size,
+ *       media_block_count,
+ *       ramdisk_ioctl,
+ *       rd
+ *     );
+ *   } else {
+ *     sc = RTEMS_UNSATISFIED;
+ *   }
+ *
+ *   return sc;
+ * }
+ * @endcode
+ */
+ramdisk *ramdisk_allocate(
+  void *area_begin,
+  uint32_t media_block_size,
+  rtems_blkdev_bnum media_block_count,
+  bool trace
+);
+
+void ramdisk_free(ramdisk *rd);
+
+static inline void ramdisk_enable_free_at_delete_request(ramdisk *rd)
+{
+  rd->free_at_delete_request = true;
+}
+
+/**
+ * @brief Allocates, initializes and registers a RAM disk.
+ *
+ * The block size will be @a media_block_size.  The block count will be
+ * @a media_block_count.  The disk storage will be allocated.  Sets the trace
+ * enable to @a trace.  Registers a device node with disk name path @a disk.
+ * The registered device number will be returned in @a dev.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_UNSATISFIED Something is wrong.
+ */
+rtems_status_code ramdisk_register(
+  uint32_t media_block_size,
+  rtems_blkdev_bnum media_block_count,
+  bool trace,
+  const char *disk,
+  dev_t *dev
+);
+
+/** @} */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif