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, 369 insertions, 0 deletions

diff --git a/cpukit/include/rtems/score/userextimpl.h b/cpukit/include/rtems/score/userextimpl.h
new file mode 100644
index 0000000000..5ad2c63765
--- /dev/null
+++ b/cpukit/include/rtems/score/userextimpl.h
@@ -0,0 +1,369 @@
+/**
+ * @file
+ *
+ * @ingroup ScoreUserExt
+ *
+ * @brief User Extension Handler API
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-2009.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  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_SCORE_USEREXTIMPL_H
+#define _RTEMS_SCORE_USEREXTIMPL_H
+
+#include <rtems/score/userext.h>
+#include <rtems/score/isrlock.h>
+#include <rtems/score/chainimpl.h>
+#include <rtems/score/percpu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ScoreUserExt User Extension Handler
+ *
+ * @ingroup Score
+ *
+ * @addtogroup ScoreUserExt
+ */
+/**@{**/
+
+/**
+ * @brief Chain iterator for dynamic user extensions.
+ *
+ * Since user extensions may delete or restart the executing thread, we must
+ * clean up registered iterators.
+ *
+ * @see _User_extensions_Iterate(), _User_extensions_Destroy_iterators() and
+ *   Thread_Control::last_user_extensions_iterator.
+ */
+typedef struct User_extensions_Iterator {
+  Chain_Iterator                   Iterator;
+  struct User_extensions_Iterator *previous;
+} User_extensions_Iterator;
+
+typedef struct {
+  /**
+   * @brief Active dynamically added user extensions.
+   */
+  Chain_Control Active;
+
+  /**
+   * @brief Chain iterator registration.
+   */
+  Chain_Iterator_registry Iterators;
+
+  /**
+   * @brief Lock to protect User_extensions_List::Active and
+   * User_extensions_List::Iterators.
+   */
+  ISR_LOCK_MEMBER( Lock )
+} User_extensions_List;
+
+/**
+ * @brief List of active extensions.
+ */
+extern User_extensions_List _User_extensions_List;
+
+/**
+ * @brief List of active task switch extensions.
+ */
+extern Chain_Control _User_extensions_Switches_list;
+
+/**
+ * @name Extension Maintainance
+ */
+/**@{**/
+
+void _User_extensions_Handler_initialization( void );
+
+void _User_extensions_Add_set(
+  User_extensions_Control *extension
+);
+
+RTEMS_INLINE_ROUTINE void _User_extensions_Add_API_set(
+  User_extensions_Control *extension
+)
+{
+  _User_extensions_Add_set( extension );
+}
+
+RTEMS_INLINE_ROUTINE void _User_extensions_Add_set_with_table(
+  User_extensions_Control     *extension,
+  const User_extensions_Table *extension_table
+)
+{
+  extension->Callouts = *extension_table;
+
+  _User_extensions_Add_set( extension );
+}
+
+void _User_extensions_Remove_set(
+  User_extensions_Control *extension
+);
+
+/**
+ * @brief User extension visitor.
+ *
+ * @param[in, out] executing The currently executing thread.
+ * @param[in, out] arg The argument passed to _User_extensions_Iterate().
+ * @param[in] callouts The current callouts.
+ */
+typedef void (*User_extensions_Visitor)(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+typedef struct {
+  Thread_Control *created;
+  bool            ok;
+} User_extensions_Thread_create_context;
+
+void _User_extensions_Thread_create_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+void _User_extensions_Thread_delete_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+void _User_extensions_Thread_start_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+void _User_extensions_Thread_restart_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+void _User_extensions_Thread_begin_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+void _User_extensions_Thread_exitted_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+typedef struct {
+  Internal_errors_Source source;
+  Internal_errors_t      error;
+} User_extensions_Fatal_context;
+
+void _User_extensions_Fatal_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+void _User_extensions_Thread_terminate_visitor(
+  Thread_Control              *executing,
+  void                        *arg,
+  const User_extensions_Table *callouts
+);
+
+/**
+ * @brief Iterates through all user extensions and calls the visitor for each.
+ *
+ * @param[in, out] arg The argument passed to the visitor.
+ * @param[in] visitor The visitor for each extension.
+ * @param[in] direction The iteration direction for dynamic extensions.
+ */
+void _User_extensions_Iterate(
+  void                     *arg,
+  User_extensions_Visitor   visitor,
+  Chain_Iterator_direction  direction
+);
+
+/** @} */
+
+/**
+ * @name Extension Callout Dispatcher
+ */
+/**@{**/
+
+static inline bool _User_extensions_Thread_create( Thread_Control *created )
+{
+  User_extensions_Thread_create_context ctx = { created, true };
+
+  _User_extensions_Iterate(
+    &ctx,
+    _User_extensions_Thread_create_visitor,
+    CHAIN_ITERATOR_FORWARD
+  );
+
+  return ctx.ok;
+}
+
+static inline void _User_extensions_Thread_delete( Thread_Control *deleted )
+{
+  _User_extensions_Iterate(
+    deleted,
+    _User_extensions_Thread_delete_visitor,
+    CHAIN_ITERATOR_BACKWARD
+  );
+}
+
+static inline void _User_extensions_Thread_start( Thread_Control *started )
+{
+  _User_extensions_Iterate(
+    started,
+    _User_extensions_Thread_start_visitor,
+    CHAIN_ITERATOR_FORWARD
+  );
+}
+
+static inline void _User_extensions_Thread_restart( Thread_Control *restarted )
+{
+  _User_extensions_Iterate(
+    restarted,
+    _User_extensions_Thread_restart_visitor,
+    CHAIN_ITERATOR_FORWARD
+  );
+}
+
+static inline void _User_extensions_Thread_begin( Thread_Control *executing )
+{
+  _User_extensions_Iterate(
+    executing,
+    _User_extensions_Thread_begin_visitor,
+    CHAIN_ITERATOR_FORWARD
+  );
+}
+
+static inline void _User_extensions_Thread_switch(
+  Thread_Control *executing,
+  Thread_Control *heir
+)
+{
+  const Chain_Control *chain = &_User_extensions_Switches_list;
+  const Chain_Node    *tail = _Chain_Immutable_tail( chain );
+  const Chain_Node    *node = _Chain_Immutable_first( chain );
+
+  if ( node != tail ) {
+    Per_CPU_Control *cpu_self;
+#if defined(RTEMS_SMP)
+    ISR_Level        level;
+#endif
+
+    cpu_self = _Per_CPU_Get();
+
+#if defined(RTEMS_SMP)
+    _ISR_Local_disable( level );
+#endif
+    _Per_CPU_Acquire( cpu_self );
+
+    while ( node != tail ) {
+      const User_extensions_Switch_control *extension =
+        (const User_extensions_Switch_control *) node;
+
+      (*extension->thread_switch)( executing, heir );
+
+      node = _Chain_Immutable_next( node );
+    }
+
+    _Per_CPU_Release( cpu_self );
+#if defined(RTEMS_SMP)
+    _ISR_Local_enable( level );
+#endif
+  }
+}
+
+static inline void _User_extensions_Thread_exitted( Thread_Control *executing )
+{
+  _User_extensions_Iterate(
+    executing,
+    _User_extensions_Thread_exitted_visitor,
+    CHAIN_ITERATOR_FORWARD
+  );
+}
+
+static inline void _User_extensions_Fatal(
+  Internal_errors_Source source,
+  Internal_errors_t      error
+)
+{
+  User_extensions_Fatal_context ctx = { source, error };
+
+  _User_extensions_Iterate(
+    &ctx,
+    _User_extensions_Fatal_visitor,
+    CHAIN_ITERATOR_FORWARD
+  );
+}
+
+static inline void _User_extensions_Thread_terminate(
+  Thread_Control *executing
+)
+{
+  _User_extensions_Iterate(
+    executing,
+    _User_extensions_Thread_terminate_visitor,
+    CHAIN_ITERATOR_BACKWARD
+  );
+}
+
+static inline void _User_extensions_Acquire( ISR_lock_Context *lock_context )
+{
+  _ISR_lock_ISR_disable_and_acquire(
+    &_User_extensions_List.Lock,
+    lock_context
+  );
+}
+
+static inline void _User_extensions_Release( ISR_lock_Context *lock_context )
+{
+  _ISR_lock_Release_and_ISR_enable(
+    &_User_extensions_List.Lock,
+    lock_context
+  );
+}
+
+static inline void _User_extensions_Destroy_iterators(
+  Thread_Control *the_thread
+)
+{
+  ISR_lock_Context          lock_context;
+  User_extensions_Iterator *iter;
+
+  _User_extensions_Acquire( &lock_context );
+
+  iter = the_thread->last_user_extensions_iterator;
+
+  while ( iter != NULL ) {
+    _Chain_Iterator_destroy( &iter->Iterator );
+    iter = iter->previous;
+  }
+
+  _User_extensions_Release( &lock_context );
+}
+
+/** @} */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */