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, 65 insertions, 0 deletions

diff --git a/bsps/sparc/include/bsp/i2cmst.h b/bsps/sparc/include/bsp/i2cmst.h
new file mode 100644
index 0000000000..3eee717524
--- /dev/null
+++ b/bsps/sparc/include/bsp/i2cmst.h
@@ -0,0 +1,65 @@
+/**
+ * @file
+ * @ingroup sparc_bsp
+ * @defgroup i2c I2C-master
+ * @ingroup i2c
+ * @brief Driver for GRLIB port of OpenCores I2C-master
+ */
+
+/*
+ * COPYRIGHT (c) 2007 Cobham Gaisler AB
+ * with parts from the RTEMS MPC83xx I2C driver (c) 2007 Embedded Brains GmbH.
+ *
+ * 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 _I2CMST_H
+#define _I2CMST_H
+
+#include <rtems/libi2c.h>
+#include <ambapp.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* I2C-master operational registers */
+
+typedef struct gr_i2cmst_regs {
+  volatile unsigned int prescl; /* Prescale register */
+  volatile unsigned int ctrl;   /* Control register */
+  volatile unsigned int tdrd;   /* Transmit and Receive registers */
+  volatile unsigned int cmdsts; /* Command and Status registers */
+} gr_i2cmst_regs_t;
+
+/* Control (CTRL) register */
+#define GRI2C_CTRL_EN         0x00000080 /* Enable core */
+#define GRI2C_CTRL_IEN        0x00000040 /* Interrupt enable */
+
+/* Command (CMD) register */
+#define GRI2C_CMD_STA         0x00000080 /* Generate START condition */
+#define GRI2C_CMD_STO         0x00000040 /* Generate STOP condition */
+#define GRI2C_CMD_RD          0x00000020 /* Read from slave */
+#define GRI2C_CMD_WR          0x00000010 /* Write to slave */
+#define GRI2C_CMD_ACK         0x00000008 /* Acknowledge */
+#define GRI2C_CMD_IACK        0x00000001 /* Interrupt acknowledge */
+
+/* Status (STS) register */
+#define GRI2C_STS_RXACK       0x00000080 /* Receive acknowledge */
+#define GRI2C_STS_BUSY        0x00000040 /* I2C-bus busy */
+#define GRI2C_STS_AL          0x00000020 /* Arbitration lost */
+#define GRI2C_STS_TIP         0x00000002 /* Transfer in progress */
+#define GRI2C_STS_IF          0x00000001 /* Interrupt flag */
+
+#define GRI2C_STATUS_IDLE     0x00000000
+
+/* Register I2CMST driver to Driver Manager */
+void i2cmst_register_drv (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*  _I2CMST_H */