58b20109cf
import sys
import yaml
with open(sys.argv[1]) as fp:
data = fp.read()
if not data.find("---") == 0:
# no head
print("NO YAML HEAD FOUND")
sys.exit(-1)
data = data[3:]
head_end = data.find("---")
head = data[0:head_end]
data = data[head_end+3:]
metadata = yaml.safe_load(head)
cats = metadata.pop('categories', None)
if cats != None:
if type(cats) == list:
tags = cats
elif type(cats) == str:
tags = cats.split()
tags = list(map(lambda t: t.lower(), tags))
metadata["tags"] = ", ".join(tags)
new_data = f"---\n{yaml.dump(metadata, default_flow_style=False)}---{data}"
# write it
print(f"coverted: categories to tags: {tags} - {sys.argv[1]}")
with open(sys.argv[1], "w") as fp:
fp.write(new_data)
sys.exit(0)
if not metadata.get("tags", None):
metadata["tags"] = "untagged"
new_data = f"---\n{yaml.dump(metadata, default_flow_style=False)}---{data}"
print(f"untagged: {sys.argv[1]}")
# write it
with open(sys.argv[1], "w") as fp:
fp.write(new_data)
sys.exit(0)
print("No changes needed")
3.4 KiB
| comments | date | layout | tags | title |
|---|---|---|---|---|
| true | 2013-05-28 21:24 | post | rtems, gsoc, archlinux | Getting started with RTEMS on Archlinux |
The default RTEMS geting started does not cover the toolchain setup as it should be. It either redirects the user to download a ~1 GB distro or some pretty old RPMs. This shouldn't be like this.
There is an excellent tool called rtems source builder which can help a newbie setup RTEMS environment in a brisk. This post is the authors journal about how he did it, shared beacuse it might be beneficial to people looking to bootstrap RTEMS.
RTEMS is a real time operating system. It works on various type of hardware, and a devlopment setup is specific to the hardware of developers choice. Here I will demonstrate setting up a sparc toolchain with b-sis simulator.
Setting up toolchain
First step of our RTEMS journey. A toolchain consists of a compiler, linker, debuggger and a simulator for the hardware. We need these tools to compile the RTEMS code and execute our programs.
This was a painful step in past. Cross compiler environments are nasty to get right. But dont worry, we have our wonderful rtems-source-builder to rescue.
rtems-source-builder automates the task of setting up this toolchain - it downloads the source files, builds them and installs in the system. It also have the option to make a tarball.
The actuall steps are documented here - rtems-source-builder documentation, but if you prefer a capsule
- Setup directories and get source
$ cd
$ mkdir -p development/rtems/src
$ cd development/rtems/src
$ git clone git://git.rtems.org/rtems-source-builder.git
$ cd rtems-source-builder
- Check environment.
$ ./source-builder/sb-check
RTEMS Source Builder environment is ok
- Build a sparc target
$ cd rtems
$ ../source-builder/sb-set-builder --log=l-sparc.txt /
--prefix=$HOME/development/rtems/4.11 4.11/rtems-sparc
this will produce binaries in $HOME/development/rtems/4.11 directory.
Note: Default version of makeinfo in archlinux is incomaptible with tools we build, source-builder documentations says
Archlinux, by default installs texinfo-5 which is incompatible for building GCC 4.7 tree. You will have to obtain texinfo-legacy from AUR and provide a manual override.
# pacman -R texinfo
$ yaourt -S texinfo-legacy
# ln -s /usr/bin/makeinfo-4.13a /usr/bin/makeinfo
Building RTEMS
- First obtain the RTEMS code from github.
$ cd
$ mkdir -p development/rtems/repo
$ cd development/rtems/repo
$ git clone git@github.com:RTEMS/rtems.git
$ cd rtems
- Bootstrap the rtems and build code.
$ export PATH=/home/dhananjay/build/rtems/4.11/bin:$PATH
$ ./bootstrap
- Build a b-sis simulator code.
$ cd ..
$ mkdir b-sis && cd b-sis
$ ../rtems/configure --target=sparc-rtems4.11 --enable-rtemsbsp=sis --enable-tests=samples --enable-posix --prefix=/home/dhananjay/build/rtems/src/
$ make
Running example code.
- Find the sample applications and execute them.
$ cd sparc-rtems4.11/c/sis/testsuites/samples/hello
$ ls
hello.exe hello.num hello.ralf init.o Makefile
$ sparc-rtems4.11-run hello.exe
*** GSOC HELLO WORLD TEST ***
Hello RTEMS World
Dhananjay Balan
*** END OF HELLO WORLD TEST ***
Update: Newer versions of RSB builds RTEMS automatically, no manual intervention needed. You can skip this step altogether.