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, 80 insertions, 0 deletions

diff --git a/bsps/include/libchip/rtc.h b/bsps/include/libchip/rtc.h
new file mode 100644
index 0000000000..49dd51c2e2
--- /dev/null
+++ b/bsps/include/libchip/rtc.h
@@ -0,0 +1,80 @@
+/*
+ *  This file contains the Real-Time Clock definitions.
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  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 __LIBCHIP_RTC_h
+#define __LIBCHIP_RTC_h
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <rtems.h>
+
+/*
+ *  Types for get and set register routines
+ */
+
+typedef uint32_t (*getRegister_f)(uintptr_t  port, uint8_t reg);
+typedef void     (*setRegister_f)(uintptr_t  port, uint8_t reg, uint32_t value);
+
+typedef struct _rtc_fns {
+  void    (*deviceInitialize)(int minor);
+  int     (*deviceGetTime)(int minor, rtems_time_of_day *time);
+  int     (*deviceSetTime)(int minor, const rtems_time_of_day *time);
+} rtc_fns;
+
+typedef enum {
+  RTC_M48T08,                  /* SGS-Thomsom M48T08 or M48T18 */
+  RTC_ICM7170,                 /* Harris ICM-7170 */
+  RTC_CUSTOM,                  /* BSP specific driver */
+  RTC_MC146818A                /* Motorola MC146818A */
+} rtc_devs;
+
+/*
+ * Each field is interpreted thus:
+ *
+ * sDeviceName  This is the name of the device.
+ *
+ * deviceType   This indicates the chip type.
+ *
+ * pDeviceFns   This is a pointer to the set of driver routines to use.
+ *
+ * pDeviceParams This contains either device specific data or a pointer to a
+ *              device specific information table.
+ *
+ * ulCtrlPort1  This is the primary control port number for the device.
+ *
+ * ulDataPort   This is the port number for the data port of the device
+ *
+ * getRegister  This is the routine used to read register values.
+ *
+ * setRegister  This is the routine used to write register values.
+ */
+
+typedef struct _rtc_tbl {
+  const char    *sDeviceName;
+  rtc_devs       deviceType;
+  const rtc_fns *pDeviceFns;
+  bool           (*deviceProbe)(int minor);
+  void          *pDeviceParams;
+  uintptr_t      ulCtrlPort1;
+  uintptr_t      ulDataPort;
+  getRegister_f  getRegister;
+  setRegister_f  setRegister;
+} rtc_tbl;
+
+extern rtc_tbl  RTC_Table[];
+extern size_t   RTC_Count;
+
+
+extern bool rtc_probe( int minor );
+
+#endif
+/* end of include file */