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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.
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* Makefile.am, preinstall.am: Added statvfs.h.
* libcsupport/Makefile.am: Add statvfs.c.
* libcsupport/include/sys/statvfs.h, libcsupport/src/statvfs.c:
New.
* libcsupport/include/rtems/libio.h: Add a file system handler for
the statvfs call.
* libfs/src/devfs/devfs_init.c, libfs/src/dosfs/msdos_init.c,
libfs/src/imfs/imfs_init.c, libfs/src/nfsclient/src/nfs.c: Set the
statvfs handler to NULL.
* include/rtems/fs.h: Add a second node access field for the RFS
file system to hold a directory offset while the existing field
holds the inode number. This save a rescan of the directory when
working with directories.
* libblock/include/rtems/bdbuf.h: Added references and user fields
to the buffer descriptor.
* libblock/src/bdbuf.c: Added dynamic buffer support for different
block sizes. Fixed a number of bugs.
* libblock/src/blkdev.c: Release the disk device on an error.
* libblock/src/diskdevs.c: Set the block size to the media block
size during initialisation of the disk device.
* libblock/src/flashdisk.c, libblock/src/nvdisk.c,
libblock/src/ramdisk.c: Updated the drivers to handle variable
block sizes.
* libfs/src/dosfs/fat.c, libfs/src/dosfs/fat.h: Release any
buffers when an error occurs. The FAT buffer layer hangs onto a
single buffer while mounted. This should be fixed.
* sapi/inline/rtems/chain.inl: Added rtems_chain_set_off_chain,
rtems_chain_is_node_off_chain, and rtems_chain_previous.
* score/inline/rtems/score/chain.inl: Added _Chain_Set_off_chain,
and _Chain_Is_node_off_chain.
* libmisc/shell/main_ln.c, libmisc/shell/main_mknod.c,
libmisc/shell/mknod-pack_dev.c, libmisc/shell/mknod-pack_dev.h:
New shell commands.
* libmisc/Makefile.am, libmisc/shell/shellconfig.h: Added ln and
mknod commands.
* libmisc/shell/hexdump-display.c: Fixed the reopen bug which
showed up as a free with a bad pointer.
* libmisc/shell/main_mount.c: List the user adding file system
when listing the available file systems to mount.
* libmisc/shell/utils-cp.c: Remove the fixed static copy buffer
and use a large dynamic buffer.
* score/inline/rtems/score/address.inl, score/src/coremsgsubmit.c,
score/src/objectallocate.c, score/src/objectfree.c: Remove
warnings.
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