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Update CONTRIBUTING.md

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Sebastian Huber
2017-10-10 14:35:40 +02:00
parent acf428e92f
commit cd7d52dbe9
1 changed files with 26 additions and 10 deletions
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CONTRIBUTING.md
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@@ -159,16 +159,16 @@ threaded execution of the application but minimizes the necessary changes to the
original FreeBSD code.
* Import and commit the unchanged source files like described above.
* Add the files to the libbsd.py and build them.
* Add the files to the [libbsd.py](libbsd.py) and build them.
* Check the sources for everything that can be made const. This type of patches
should go back to the upstream FreeBSD sources.
* Move static variables out of functions if necessary (search for
"<TAB>static"). These patches most likely will not be accepted into FreeBSD.
"\tstatic"). These patches most likely will not be accepted into FreeBSD.
* Add a rtems_bsd_command_PROGNAME() wrapper function to the source file
containing the main function (e.g. PROGNAME = pfctl). For an example look at
`rtems_bsd_command_pfctl()` in `freebsd/sbin/pfctl/pfctl.c`.
`rtems_bsd_command_pfctl()` in [pfctl.c](freebsd/sbin/pfctl/pfctl.c).
* You probably have to use getopt_r() instead of getopt(). Have a look at
`freebsd/sbin/pfctl/pfctl.c`.
[pfctl.c](freebsd/sbin/pfctl/pfctl.c).
* Build the libbsd without optimization.
* Use the `userspace-header-gen.py` to generate some necessary header
files. It will generate one `rtems-bsd-PROGNAME-MODULE-data.h` per object file, one
@@ -180,13 +180,29 @@ original FreeBSD code.
has to match the name that is used in the RTEMS linker set further below.
* If you regenerated files that have already been generated, you may have to
remove RTEMS-specific names from the namespace. The defaults (linker set names
and rtems_bsd_program_xxx) should already be filtered.
and rtems_bsd_program_.*) should already be filtered.
* Put the generated header files into the same folder like the source files.
* Include `PROGNAME-rtems-bsd-namespace.h` at the top of each source file and
the `PROGNAME-rtems-bsd-MODULE-data.h` after the include section of the
corresponding source files.
* Include `machine/rtems-bsd-program.h` at the top of the include block in each
source file.
* At the top of each source file place the following right after the user-space header:
```c
#ifdef __rtems__
#include <machine/rtems-bsd-program.h>
#include "rtems-bsd-PROGNAME-namespace.h"
#endif /* __rtems__ */
```
The following command may be useful:
```
sed -i 's%#include <machine/rtems-bsd-user-space.h>%#include <machine/rtems-bsd-user-space.h>\n#ifdef __rtems__\n#include <machine/rtems-bsd-program.h>\n#include "rtems-bsd-PROGNAME-namespace.h"\n#endif /* __rtems__ */%' *.c
```
* At the bottom of each source file place the follwing:
```c
#ifdef __rtems__
#include "rtems-bsd-PROGNAME-FILE-data.h"
#endif /* __rtems__ */
```
The following command may be useful:
```
for i in *.c ; do n=$(basename $i .c) ; echo -e "#ifdef __rtems__\n#include \"rtems-bsd-PROGNAME-$n-data.h\"\n#endif /* __rtems__ */" >> $i ; done
```
* Create one compilable commit.
Rules for Modifying FreeBSD Source