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Download and Unpack:
Download and unpack the NuttX tarball. If you are reading this, then
you have probably already done that. After unpacking, you will end
up with a directory called nuttx-version (where version is the NuttX
version number). You might want to rename that directory nuttx to
match the various instructions in the documentation and some scripts
in the source tree.
That nuttx build directory should reside in a path that contains no
spaces in the higher level directory names. For example, under
Cygwin, your home directory might be formed from your first and last
names like: "/home/First Last". That will cause strange errors when
the make system tries to build.
[Actually, that problem is probably not to difficult to fix. Some
Makefiles probably just need some pathes within double quotes]
A Note about Header Files:
patacongo
committed
Some toolchains are built with header files extracted from a C-library
distribution (such as newlib). For those toolchains, NuttX must be
compiled without using the standard header files that are distributed
with your toolchain. This prevents including conflicting, incompatible
header files (such as stdio.h).
Certain header files, such as setjmp.h and varargs.h, may still be
needed from your toolchain, however. If that is the case, one solution
is to copy those header file from your toolchain into the NuttX include
directory.
Also, if you prefer to use the stdint.h and stdbool.h header files from
your toolchain, those could be copied into the include/ directory too.
Using most other header files from your toolchain would probably cause
errors.
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CONFIGURING NUTTX
^^^^^^^^^^^^^^^^^
"Canned" NuttX configuration files are retained in:
configs/<board-name>/<config-dir>
Where <board-name> is the name of your development board and <config-dir>.
Configuring NuttX requires only copying three files from the <config-dir>
to the directly where you installed NuttX (TOPDIR):
Copy configs/<board-name>/<config-dir>/Make.def to ${TOPDIR}/Make.defs
Make.defs describes the rules needed by you tool chain to compile
and link code. You may need to modify this file to match the
specific needs of your toolchain.
Copy configs/<board-name>/<config-dir>/setenv.sh to ${TOPDIR}/setenv.sh
setenv.sh is an optional convenience file that I use to set
the PATH variable to the toolchain binaries. You may chose to
use setenv.sh or not. If you use it, then it may need to be
modified to include the path to your toolchain binaries.
Copy configs/<board-name>/<config-dir>/defconfig to ${TOPDIR}/.config
The defconfig file holds the actual build configuration. This
file is included by all other make files to determine what is
included in the build and what is not. This file is also used
to generate a C configuration header at include/nuttx/config.h.
General information about configuring NuttX can be found in:
${TOPDIR}/configs/README.txt
${TOPDIR}/configs/<board-name>/README.txt
There is a configuration script in the tools/ directory that makes this
easier. It is used as follows:
cd ${TOPDIR}/tools
./configure.sh <board-name>/<config-dir>
BUILDING NUTTX
^^^^^^^^^^^^^^
NuttX builds in-place in the source tree. You do not need to create
any special build directories. Assuming that your Make.defs is setup
properly for your tool chain, the following steps are all that are
required to build NuttX:
cd ${TOPDIR}
make
At least one configuration (eagle100) requires additional command line
arguments on the make command. Read ${TOPDIR}/configs/<board-name>/README.txt
to see if that applies to your target.
CYGWIN BUILD PROBLEMS
^^^^^^^^^^^^^^^^^^^^^
If you see strange behaviour when building under Cygwin then you may have
a problem with your PATH variable. For example, if you see failures to
locate files that are clearly present, then may mean that you are using
the wrong version of a tool. For example, you may not be using Cywgin's
'make' program at /usr/bin/make. Try:
$ which make
/usr/bin/make
When you install some toolchains (such as Yargarto or CodeSourcery tools),
they may modify your PATH variable to include a path to their binaries.
At that location, they make have GNUWin32 versions of the tools. So you
might actually be using a version of make that does not understand Cygwin
pathes.
The solution is either:
1. Edit your PATH to remove the path to the GNUWin32 tools, or
2. Put /usr/local/bin, /usr/bin, and /bin at the front of your path:
$ export PATH=/usr/local/bin:/usr/bin:/bin:$PATH
Additional information can be found in the Documentation/ directory and
also in README files that are scattered throughout the source tree. The
documentation is in HTML and can be access by loading the following file
into your Web browser:
Documentation/index.html
NuttX documentation is also available online at http://www.nuttx.org.
Below is a guide to the available README files in the NuttX source tree:
|
|- arch/
| |
| |- arm
| | `- src
| | `- lpc214x/README.txt
| |- sh/
| | |- include/
| | | |-m16c/README.txt
| | | |-sh1/README.txt
| | | `-README.txt
| | |- src/
| | | |-common/README.txt
| | | |-m16c/README.txt
| | | |-sh1/README.txt
| | | `-README.txt
| `- z80/
| | `- src/
| | `- z80/README.txt
| `- README.txt
|- configs/
| |- c5471evm/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- ea3131/
| | `- README.txt
| |- eagle100/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- ez80f910200kitg/
| | |- ostest/README.txt
| | `- README.txt
| |- ez80f910200zco/
| | |- dhcpd/README.txt
| | |- httpd/README.txt
| | |- nettest/README.txt
| | |- nsh/README.txt
| | |- ostest/README.txt
| | |- poll/README.txt
| | `- README.txt
| |- lm3s5965-ek/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- m68332evb/
| | |- include/README.txt
| | `- src/README.txt
| |- mcu123-lpc214x/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- mx1ads/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- ntosd-dm320/
| | |- doc/README.txt
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- olimex-strp711/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- olimex-lpc2378/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- pjrc-8051/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
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| |- sim/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- skp16c26/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- stm3210e-eval/
| | |- include/README.txt
| | |- RIDE/README.txt
| | |- src/README.txt
| | `- README.txt
| |- us7032evb1/
| | |- bin/README.txt
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- xtrs/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- z16f2800100zcog/
| | |- ostest/README.txt
| | |- pashello/README.txt
| | `- README.txt
| |- z80sim/
| | |- include/README.txt
| | |- src/README.txt
| | `- README.txt
| |- z8encore000zco/
| | |- ostest/README.txt
| | `- README.txt
| |- z8f64200100kit/
| | |- ostest/README.txt
| | `- README.txt
| `- README.txt
|- drivers/
| `- README.txt
|- examples/
| |- nsh/README.txt
| |- pashello/README.txt
| `- README.txt
|- graphics/
| `- README.txt
|- libxx/
| `- README.txt