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, 64 insertions, 0 deletions

diff --git a/bsps/arm/imx/include/arm/freescale/imx/imx_ccmvar.h b/bsps/arm/imx/include/arm/freescale/imx/imx_ccmvar.h
new file mode 100644
index 0000000000..5633de6f50
--- /dev/null
+++ b/bsps/arm/imx/include/arm/freescale/imx/imx_ccmvar.h
@@ -0,0 +1,64 @@
+/*-
+ * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: head/sys/arm/freescale/imx/imx_ccmvar.h 292565 2015-12-21 20:17:24Z gonzo $
+ */
+
+#ifndef	IMX_CCMVAR_H
+#define	IMX_CCMVAR_H
+
+/*
+ * We need a clock management system that works across unrelated SoCs and
+ * devices.  For now, to keep imx development moving, define some barebones
+ * functionality that can be shared within the imx family by having each SoC
+ * implement functions with a common name.
+ *
+ * The usb enable functions are best-effort.  They turn on the usb otg, host,
+ * and phy clocks in a SoC-specific manner, but it may take a lot more than that
+ * to make usb work on a given board.  In particular, it can require specific
+ * pinmux setup of gpio pins connected to external phy parts, voltage regulators
+ * and overcurrent detectors, and so on.  On such boards, u-boot or other early
+ * board setup code has to handle those things.
+ */
+
+uint32_t imx_ccm_ipg_hz(void);
+uint32_t imx_ccm_perclk_hz(void);
+uint32_t imx_ccm_sdhci_hz(void);
+uint32_t imx_ccm_uart_hz(void);
+uint32_t imx_ccm_ahb_hz(void);
+
+#ifndef __rtems__
+void imx_ccm_usb_enable(device_t _usbdev);
+void imx_ccm_usbphy_enable(device_t _phydev);
+void imx_ccm_ssi_configure(device_t _ssidev);
+void imx_ccm_hdmi_enable(void);
+void imx_ccm_ipu_enable(int ipu);
+
+/* Routines to get and set the arm clock root divisor register. */
+uint32_t imx_ccm_get_cacrr(void);
+void     imx_ccm_set_cacrr(uint32_t _divisor);
+#endif /* __rtems__ */
+
+#endif