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, 83 insertions, 0 deletions

diff --git a/cpukit/include/rtems/rtems/signal.h b/cpukit/include/rtems/rtems/signal.h
new file mode 100644
index 0000000000..f7b7000d9a
--- /dev/null
+++ b/cpukit/include/rtems/rtems/signal.h
@@ -0,0 +1,83 @@
+/**
+ * @file
+ *
+ * @ingroup ClassicSignal
+ *
+ * @brief Signals API
+ */
+
+/* COPYRIGHT (c) 1989-2008.
+ * 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_RTEMS_SIGNAL_H
+#define _RTEMS_RTEMS_SIGNAL_H
+
+#include <rtems/rtems/asr.h>
+#include <rtems/rtems/modes.h>
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ClassicSignal Signals
+ *
+ * @ingroup ClassicRTEMS
+ *
+ * Directives provided are:
+ *
+ * + establish an asynchronous signal routine
+ * + send a signal set to a task
+ */
+/**@{*/
+
+/**
+ * @brief RTEMS Catch Signal
+ *
+ * This routine implements the rtems_signal_catch directive. This directive
+ * is used to establish asr_handler as the Asynchronous Signal Routine
+ * (RTEMS_ASR) for the calling task. The asr_handler will execute with a
+ * mode of mode_set.
+ *
+ * @param[in] asr_handler is the address of asynchronous signal routine (asr)
+ *            ( NULL indicates asr is invalid )
+ * @param[in] mode_set is the mode value for asr
+ *
+ * @retval RTEMS_SUCCESSFUL
+ */
+rtems_status_code rtems_signal_catch(
+  rtems_asr_entry   asr_handler,
+  rtems_mode        mode_set
+);
+
+/**
+ * @brief RTEMS Send Signal
+ *
+ * This routine implements the rtems_signal_send directive. This directive
+ * sends the signal_set to the task specified by ID.
+ *
+ * @param[in] id is the thread thread id
+ * @param[in] signal_set is the signal set
+ *
+ * @retval RTEMS_SUCCESSFUL if successful or error code if unsuccessful
+ */
+rtems_status_code rtems_signal_send(
+  rtems_id         id,
+  rtems_signal_set signal_set
+);
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */