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, 68 insertions, 0 deletions

diff --git a/bsps/powerpc/include/mpc83xx/mpc83xx_i2cdrv.h b/bsps/powerpc/include/mpc83xx/mpc83xx_i2cdrv.h
new file mode 100644
index 0000000000..206cb87cb4
--- /dev/null
+++ b/bsps/powerpc/include/mpc83xx/mpc83xx_i2cdrv.h
@@ -0,0 +1,68 @@
+/*===============================================================*\
+| Project: RTEMS support for MPC83xx                              |
++-----------------------------------------------------------------+
+|                    Copyright (c) 2007                           |
+|                    Embedded Brains GmbH                         |
+|                    Obere Lagerstr. 30                           |
+|                    D-82178 Puchheim                             |
+|                    Germany                                      |
+|                    rtems@embedded-brains.de                     |
++-----------------------------------------------------------------+
+| 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.                           |
+|                                                                 |
++-----------------------------------------------------------------+
+| this file contains the MPC83xx I2C driver declarations          |
+\*===============================================================*/
+#ifndef _MPC83XX_I2CDRV_H
+#define _MPC83XX_I2CDRV_H
+
+#include <rtems/libi2c.h>
+#include <rtems/irq.h>
+
+#include <bsp.h>
+
+#ifdef LIBBSP_POWERPC_GEN83XX_BSP_H
+  #include <mpc83xx/mpc83xx.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef LIBBSP_POWERPC_MPC55XXEVB_BSP_H
+  typedef struct {
+    volatile uint8_t i2cadr;
+    volatile uint8_t i2cfdr;
+    volatile uint8_t i2ccr;
+    volatile uint8_t i2csr;
+    volatile uint8_t i2cdr;
+    volatile uint8_t i2cdfsrr;
+  } m83xxI2CRegisters_t;
+#endif
+
+typedef struct mpc83xx_i2c_softc {
+  m83xxI2CRegisters_t *reg_ptr;     /* ptr to HW registers             */
+  int                  initialized; /* TRUE: module is initialized     */
+  rtems_irq_number     irq_number;  /* IRQ number used for this module */
+  uint32_t             base_frq;    /* input frq for baud rate divider */
+  rtems_id             irq_sema_id; /* SEMA used for IRQ signalling    */
+  void               (*probe)(struct mpc83xx_i2c_softc *self);
+} mpc83xx_i2c_softc_t ;
+
+typedef struct {
+  rtems_libi2c_bus_t	   bus_desc;
+  struct mpc83xx_i2c_softc softc;
+} mpc83xx_i2c_desc_t;
+
+
+extern rtems_libi2c_bus_ops_t mpc83xx_i2c_ops;
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _MPC83XX_I2CDRV_H */