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, 94 insertions, 0 deletions

diff --git a/bsps/sparc/include/bsp/gpiolib.h b/bsps/sparc/include/bsp/gpiolib.h
new file mode 100644
index 0000000000..f82d4fa2c2
--- /dev/null
+++ b/bsps/sparc/include/bsp/gpiolib.h
@@ -0,0 +1,94 @@
+/*  GPIO Library interface
+ *
+ *  COPYRIGHT (c) 2009.
+ *  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 __GPIOLIB_H__
+#define __GPIOLIB_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* GPIO Config of one GPIO port */
+struct gpiolib_config {
+	char		mask;		/* 0=Masked/1=Unmasked IRQ */
+	char		irq_level;	/* Edge or Level triggered IRQ */
+	char		irq_polarity;	/* Polarity of IRQ */
+};
+
+#define GPIOLIB_IRQ_EDGE 0
+#define GPIOLIB_IRQ_LEVEL 1
+
+#define GPIOLIB_IRQ_POL_LOW 0
+#define GPIOLIB_IRQ_POL_HIGH 1
+
+/* Libarary initialize function must be called befor any other */
+extern int gpiolib_initialize(void);
+
+/*** User Interface ***/
+
+extern void *gpiolib_open(int port);
+extern void *gpiolib_open_by_name(char *devName);
+extern void gpiolib_close(void *handle);
+
+/* Show the current status one or all GPIO ports in the system. 
+ * Int port is port nunber, if port = -1 selects all ports.
+ * 
+ * If port != -1, handle is used to get port.
+ * If port != -1, handle == NULL, then port is used as port number
+ */
+extern void gpiolib_show(int port, void *handle);
+
+extern int gpiolib_set_config(void *handle, struct gpiolib_config *cfg);
+extern int gpiolib_set(void *handle, int dir, int val);
+extern int gpiolib_get(void *handle, int *inval);
+extern int gpiolib_irq_clear(void *handle);
+extern int gpiolib_irq_enable(void *handle);
+extern int gpiolib_irq_disable(void *handle);
+extern int gpiolib_irq_mask(void *handle);
+extern int gpiolib_irq_unmask(void *handle);
+extern int gpiolib_irq_force(void *handle);
+extern int gpiolib_irq_register(void *handle, void *func, void *arg);
+
+/*** Driver Interface ***/
+
+struct gpiolib_info {
+	char		devName[64];
+};
+
+struct gpiolib_drv_ops {
+	int		(*config)(void *handle, struct gpiolib_config *cfg);
+	int		(*get)(void *handle, int *val);
+	int		(*irq_opts)(void *handle, unsigned int options);
+	int		(*irq_register)(void *handle, void *func, void *arg);
+	int		(*open)(void *handle);
+	int		(*set)(void *handle, int dir, int outval);
+	int		(*show)(void *handle);
+	int		(*get_info)(void *handle, struct gpiolib_info *pinfo);
+};
+
+#define GPIOLIB_IRQ_ENABLE  0x01
+#define GPIOLIB_IRQ_DISABLE 0x02
+#define GPIOLIB_IRQ_CLEAR   0x04
+#define GPIOLIB_IRQ_FORCE   0x08
+#define GPIOLIB_IRQ_MASK    0x10
+#define GPIOLIB_IRQ_UNMASK  0x20
+
+struct gpiolib_drv {
+	struct gpiolib_drv_ops	*ops;
+};
+
+/* Register a GPIO port */
+extern int gpiolib_drv_register(struct gpiolib_drv *drv, void *handle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif