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, 60 insertions, 0 deletions

diff --git a/cpukit/include/sys/statvfs.h b/cpukit/include/sys/statvfs.h
new file mode 100644
index 0000000000..cf80478aae
--- /dev/null
+++ b/cpukit/include/sys/statvfs.h
@@ -0,0 +1,60 @@
+/**
+ * @file 
+ *
+ * @brief Interface to the statvfs() Set of API Methods
+ *
+ * This include file defines the interface to the statvfs() set of
+ * API methods. The statvfs as defined by the SUS:
+ *
+ * - http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/statvfs.h.html
+ */
+
+/*
+ *  COPYRIGHT (c) 2009 Chris Johns <chrisj@rtems.org>
+ *
+ *  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 _SYS_STATVFS_H_
+#define _SYS_STATVFS_H_
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef uint64_t fsblkcnt_t;
+typedef uint32_t fsfilcnt_t;
+
+struct statvfs
+{
+  unsigned long f_bsize;   /**< File system block size. */
+  unsigned long f_frsize;  /**< Fundamental file system block size. */
+  fsblkcnt_t    f_blocks;  /**< Total number of blocks on file system in units
+                            * of f_frsize. */
+  fsblkcnt_t    f_bfree;   /**< Total number of free blocks. */
+  fsblkcnt_t    f_bavail;  /**< Number of free blocks available to
+                            * non-privileged process. */
+  fsfilcnt_t    f_files;   /**< Total number of file serial numbers. */
+  fsfilcnt_t    f_ffree;   /**< Total number of free file serial numbers. */
+  fsfilcnt_t    f_favail;  /**< Number of file serial numbers available to
+                            * non-privileged process. */
+  unsigned long f_fsid;    /**< File system ID. */
+  unsigned long f_flag;    /**< Bit mask of f_flag values. */
+  unsigned long f_namemax; /**< Maximum filename length. */
+};
+
+extern int statvfs(const char *__restrict , struct statvfs *__restrict);
+extern int fstatvfs(int, struct statvfs *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif