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, 113 insertions, 0 deletions

diff --git a/cpukit/include/rtems/posix/aio_misc.h b/cpukit/include/rtems/posix/aio_misc.h
new file mode 100644
index 0000000000..aeccbad98f
--- /dev/null
+++ b/cpukit/include/rtems/posix/aio_misc.h
@@ -0,0 +1,113 @@
+/**
+ * @file
+ * 
+ * @brief POSIX Asynchronous Input and Output Private Support
+ *
+ * This defines private information for the AIO implementation.
+ */
+
+/*
+ * Copyright 2010, Alin Rus <alin.codejunkie@gmail.com> 
+ * 
+ * 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 _AIO_MISC_H
+#define _AIO_MISC_H
+
+#include <stdio.h>
+#include <string.h>
+#include <aio.h>
+#include <pthread.h>
+#include <rtems.h>
+#include <rtems/chain.h>
+#include <rtems/system.h>
+#include <rtems/seterr.h>
+  
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+  /* Actual request being processed */
+  typedef struct
+  {
+    rtems_chain_node next_prio; /* chain requests in order of priority */
+    int policy;                 /* If _POSIX_PRIORITIZED_IO and 
+		                   _POSIX_PRIORITY_SCHEDULING are defined */ 
+    int priority;               /* see above */
+    pthread_t caller_thread;    /* used for notification */
+    struct aiocb *aiocbp;       /* aio control block */
+  } rtems_aio_request;
+
+  typedef struct
+  {
+    rtems_chain_node next_fd;   /* order fd chains in queue */
+    rtems_chain_control perfd;  /* chain of requests for this fd */
+    int fildes;                 /* file descriptor to be processed */
+    int new_fd;                 /* if this is a newly created chain */
+    pthread_mutex_t mutex;      
+    pthread_cond_t cond;
+
+  } rtems_aio_request_chain;
+
+  typedef struct
+  {
+    pthread_mutex_t mutex;
+    pthread_cond_t new_req;
+    pthread_attr_t attr;
+
+    rtems_chain_control work_req; /* chains being worked by active threads */
+    rtems_chain_control idle_req; /* fd chains waiting to be processed */
+    unsigned int initialized;     /* specific value if queue is initialized */
+    int active_threads;           /* the number of active threads */
+    int idle_threads;             /* number of idle threads */
+
+  } rtems_aio_queue;
+
+extern rtems_aio_queue aio_request_queue;
+
+#define AIO_QUEUE_INITIALIZED 0xB00B
+
+#ifndef AIO_MAX_THREADS
+#define AIO_MAX_THREADS 5
+#endif
+
+#ifndef AIO_MAX_QUEUE_SIZE
+#define AIO_MAX_QUEUE_SIZE 30
+#endif
+
+int rtems_aio_init (void);
+int rtems_aio_enqueue (rtems_aio_request *req);
+rtems_aio_request_chain *rtems_aio_search_fd 
+(
+  rtems_chain_control *chain,
+  int fildes,
+  int create
+);
+void rtems_aio_remove_fd (rtems_aio_request_chain *r_chain);
+int rtems_aio_remove_req (rtems_chain_control *chain,
+				 struct aiocb *aiocbp);
+
+#ifdef RTEMS_DEBUG
+#include <assert.h>
+
+#define AIO_assert(_x) assert(_x)
+#define AIO_printf(_x) printf(_x)
+#else
+#define AIO_assert(_x)
+#define AIO_printf(_x)
+#endif
+
+#define rtems_aio_set_errno_return_minus_one( _error, _aiocbp ) \
+  do { (_aiocbp)->error_code = (_error);			\
+    (_aiocbp)->return_value = -1;				\
+    rtems_set_errno_and_return_minus_one (_error);} while(0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif