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.
- Remove the macro defines and the need for tmacro.h by remapping the
symbols using ld's wrap option.
- Remove FLUSH_OUTPUT, it was empty.
- Move rtems_test_exit to libmisc/testsupport as a function.
Update #3199.
The BSP_output_char should output a char and not mingle with high level
processing, e.g. '\n' to '\r\n' translation. Move this translation to
rtems_putc(). Remove it from all the BSP_output_char implementations.
Close#3122.
- Provide application support for handling FDT blobs in RTEMS. This
is useful when interfacing FPGA fabrics.
- Provide a shell command to list a blob as well as provide read
and write access to addresses in the FTB.
Closes#3099.
- Add 'rtems_shell_init_environment()' so a user can create the
shell environment without needing to run a shell.
- Move 'rtems_shell_lookup_topic', 'rtems_shell_can_see_cmd',
and 'rtems_shell_execute_cmd' from the internal interface to
the public interface.
Closes#3096.
Display the scheduler name instead of the current CPU in the "task"
shell command. The current CPU could be misleading in case locking
protocols are involved. The "cpuuse" command can be used to obtain the
current CPU.
Provide extentions to <inttpes.h> PRIxxx constants for more POSIX types.
Start with existing definitions found in RTEMS Project owned code
in cpukit/.
updates #2983.
