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, 135 insertions, 0 deletions

diff --git a/cpukit/include/rtems/posix/shmimpl.h b/cpukit/include/rtems/posix/shmimpl.h
new file mode 100644
index 0000000000..f16af8123d
--- /dev/null
+++ b/cpukit/include/rtems/posix/shmimpl.h
@@ -0,0 +1,135 @@
+/**
+ * @file
+ *
+ * @brief Private Support Information for POSIX Shared Memory
+ *
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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 _RTEMS_POSIX_SHMIMPL_H
+#define _RTEMS_POSIX_SHMIMPL_H
+
+#include <rtems/fs.h>
+#include <rtems/libio.h>
+#include <rtems/posix/posixapi.h>
+#include <rtems/posix/shm.h>
+#include <rtems/score/objectimpl.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @ingroup POSIXShmPrivate
+ * @{
+ */
+
+extern Objects_Information _POSIX_Shm_Information;
+
+RTEMS_INLINE_ROUTINE POSIX_Shm_Control *_POSIX_Shm_Allocate_unprotected( void )
+{
+  return (POSIX_Shm_Control *)
+    _Objects_Allocate_unprotected( &_POSIX_Shm_Information );
+}
+
+/**
+ * @brief POSIX Shared Memory Free
+ *
+ * This routine frees a shm control block.
+ */
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Free (
+  POSIX_Shm_Control *the_shm
+)
+{
+  _Objects_Free( &_POSIX_Shm_Information, &the_shm->Object );
+}
+
+RTEMS_INLINE_ROUTINE POSIX_Shm_Control *_POSIX_Shm_Get_by_name(
+  const char                *name,
+  size_t                    *name_length_p,
+  Objects_Get_by_name_error *error
+)
+{
+  return (POSIX_Shm_Control *) _Objects_Get_by_name(
+    &_POSIX_Shm_Information,
+    name,
+    name_length_p,
+    error
+  );
+}
+
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Update_atime(
+  POSIX_Shm_Control *shm
+)
+{
+  struct timeval now;
+  gettimeofday( &now, 0 );
+  shm->atime = now.tv_sec;
+}
+
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Update_mtime_ctime(
+  POSIX_Shm_Control *shm
+)
+{
+  struct timeval now;
+  gettimeofday( &now, 0 );
+  shm->mtime = now.tv_sec;
+  shm->ctime = now.tv_sec;
+}
+
+static inline POSIX_Shm_Control* iop_to_shm( rtems_libio_t *iop )
+{
+  return (POSIX_Shm_Control*) iop->data1;
+}
+
+static inline POSIX_Shm_Control* loc_to_shm(
+    const rtems_filesystem_location_info_t *loc
+)
+{
+  return (POSIX_Shm_Control*) loc->node_access;
+}
+
+static inline int POSIX_Shm_Attempt_delete(
+    POSIX_Shm_Control* shm
+)
+{
+  Objects_Control       *obj;
+  ISR_lock_Context       lock_ctx;
+  int err;
+
+  err = 0;
+
+  _Objects_Allocator_lock();
+  --shm->reference_count;
+  if ( shm->reference_count == 0 ) {
+    if ( (*shm->shm_object.ops->object_delete)( &shm->shm_object ) != 0 ) {
+      err = EIO;
+    }
+  }
+  /* check if the object has been unlinked yet. */
+  obj = _Objects_Get( shm->Object.id, &lock_ctx, &_POSIX_Shm_Information );
+  if ( obj == NULL ) {
+    /* if it was unlinked, then it can be freed. */
+    _POSIX_Shm_Free( shm );
+  } else {
+    /* it will be freed when it is unlinked. */
+    _ISR_lock_ISR_enable( &lock_ctx );
+  }
+  _Objects_Allocator_unlock();
+  return err;
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif