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, 76 insertions, 0 deletions

diff --git a/cpukit/include/rtems/pty.h b/cpukit/include/rtems/pty.h
new file mode 100644
index 0000000000..392bfd0969
--- /dev/null
+++ b/cpukit/include/rtems/pty.h
@@ -0,0 +1,76 @@
+/*
+ * /dev/ptyXX  (A first version for pseudo-terminals)
+ *
+ *  Author: Fernando RUIZ CASAS (fernando.ruiz@ctv.es)
+ *  May 2001
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef _RTEMS_PTY_H
+#define _RTEMS_PTY_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif	
+
+#include <rtems.h>	
+
+/* Number of ptys to setup */
+extern size_t rtems_pty_maximum_ptys;
+
+/* Return the devname for a free pty slot.
+ * If no slot available (socket>=0)
+ * then the socket argument is closed
+ */
+char * rtems_pty_get(int socket);
+
+
+/* OBSOLETE */
+#define get_pty		rtems_pty_get
+
+rtems_device_driver pty_initialize(
+  rtems_device_major_number  major,
+  rtems_device_minor_number  minor,
+  void                      *arg);
+rtems_device_driver pty_open(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_close(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_read(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_write(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_control(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+
+
+#define PTY_DRIVER_TABLE_ENTRY \
+       { pty_initialize , pty_open , pty_close , \
+   pty_read , pty_write , pty_control }
+
+/* Internal functions */
+
+int telnet_pty_initialize(void);
+
+int telnet_pty_finalize(void);
+
+char *telnet_get_pty(int);
+
+#ifdef __cplusplus
+}
+#endif	
+
+#endif