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, 76 insertions, 0 deletions

diff --git a/bsps/sparc/include/bsp/ahbstat.h b/bsps/sparc/include/bsp/ahbstat.h
new file mode 100644
index 0000000000..71e2330f69
--- /dev/null
+++ b/bsps/sparc/include/bsp/ahbstat.h
@@ -0,0 +1,76 @@
+/*  AHBSTAT driver interface
+ *
+ *  COPYRIGHT (c) 2011.
+ *  Cobham Gaisler AB.
+ *
+ *  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 __AHBSTAT_H__
+#define __AHBSTAT_H__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* AHBSTAT Registers layout */
+struct ahbstat_regs {
+	volatile uint32_t status;
+	volatile uint32_t failing;
+};
+
+/* AHB fail interrupt callback to user. This function is declared weak so that
+ * the user can define a function pointer variable containing the address
+ * responsible for handling errors
+ *
+ * minor              Index of AHBSTAT hardware
+ * regs               Register address of AHBSTAT
+ * status             AHBSTAT status register at IRQ
+ * failing_address    AHBSTAT Failing address register at IRQ
+ *
+ * * User return 
+ *  0: print error onto terminal with printk and reenable AHBSTAT
+ *  1: just re-enable AHBSTAT
+ *  2: just print error
+ *  3: do nothing, let user do custom handling
+ */
+extern int (*ahbstat_error)(
+	int minor,
+	struct ahbstat_regs *regs,
+	uint32_t status,
+	uint32_t failing_address);
+
+/* Get Last received AHB Error
+ *
+ * \param minor    Index used to indentify a specific AHBSTAT core
+ * \param status   Status register at time of error IRQ was recevied
+ * \param address  Failing address register at time of error IRQ
+ *
+ * Return
+ *   0: No error received
+ *   1: Error Received, last status and address stored into argument pointers
+ *  -1: No such AHBSTAT device
+ */
+extern int ahbstat_last_error(int minor, uint32_t *status, uint32_t *address);
+
+/* Get AHBSTAT registers address from minor. Can also be used to check if
+ * AHBSTAT hardware is present.
+ *
+ * Return 
+ *   NULL       returned if no such device
+ *   non-zero   Address to AHBSTAT register
+ */
+extern struct ahbstat_regs *ahbstat_get_regs(int minor);
+
+/* Registers the AHBSTAT driver to the Driver Manager */
+void ahbstat_register_drv (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif