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, 45 insertions, 0 deletions

diff --git a/bsps/bfin/include/libcpu/timerRegs.h b/bsps/bfin/include/libcpu/timerRegs.h
new file mode 100644
index 0000000000..b66bae3339
--- /dev/null
+++ b/bsps/bfin/include/libcpu/timerRegs.h
@@ -0,0 +1,45 @@
+/*  Blackfin General Purpose Timer Registers
+ *
+ *  Copyright (c) 2008 Kallisti Labs, Los Gatos, CA, USA
+ *             written by Allan Hessenflow <allanh@kallisti.com>
+ *
+ *  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 _timerRegs_h_
+#define _timerRegs_h_
+
+
+/* register addresses */
+
+#define TIMER_CONFIG_OFFSET                             0x00
+#define TIMER_WIDTH_OFFSET                              0x04
+#define TIMER_PERIOD_OFFSET                             0x08
+#define TIMER_COUNTER_OFFSET                            0x0c
+
+
+/* register fields */
+
+#define TIMER_CONFIG_ERR_TYP_MASK                     0xc000
+#define TIMER_CONFIG_ERR_TYP_NONE                     0x0000
+#define TIMER_CONFIG_ERR_TYP_OVERFLOW                 0x4000
+#define TIMER_CONFIG_ERR_TYP_PERIOD                   0x8000
+#define TIMER_CONFIG_ERR_TYP_WIDTH                    0xc000
+#define TIMER_CONFIG_EMU_RUN                          0x0200
+#define TIMER_CONFIG_TOGGLE_HI                        0x0100
+#define TIMER_CONFIG_CLK_SEL                          0x0080
+#define TIMER_CONFIG_OUT_DIS                          0x0040
+#define TIMER_CONFIG_TIN_SEL                          0x0020
+#define TIMER_CONFIG_IRQ_ENA                          0x0010
+#define TIMER_CONFIG_PERIOD_CNT                       0x0008
+#define TIMER_CONFIG_PULSE_HI                         0x0004
+#define TIMER_CONFIG_TMODE_MASK                       0x0003
+#define TIMER_CONFIG_TMODE_RESET                      0x0000
+#define TIMER_CONFIG_TMODE_PWM_OUT                    0x0001
+#define TIMER_CONFIG_TMODE_WDTH_CAP                   0x0002
+#define TIMER_CONFIG_TMODE_EXT_CLK                    0x0003
+
+
+#endif /* _timerRegs_h_ */