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Add some info on the DEFINES= / savedefines mechanism.

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oliverschmidt 2008-06-12 22:13:59 +00:00
parent 0acc837096
commit 394078f71d
1 changed files with 12 additions and 4 deletions
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README-BUILDING
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@ -15,7 +15,7 @@ special Contiki platform that builds an entire Contiki system as a
program that runs on the development system. After compiling the program that runs on the development system. After compiling the
application for the native target it is possible to run the Contiki application for the native target it is possible to run the Contiki
system with the application by running the file hello-world.native. To system with the application by running the file hello-world.native. To
compile the application and a Contiki system for the ESB platform" the compile the application and a Contiki system for the ESB platform the
command make TARGET=esb is used. This produces a hello-world.esb file command make TARGET=esb is used. This produces a hello-world.esb file
that can be loaded into an ESB board. that can be loaded into an ESB board.
@ -28,9 +28,17 @@ To avoid having to type TARGET= every time make is run, it is possible
to run make TARGET=esb savetarget to save the selected target as the to run make TARGET=esb savetarget to save the selected target as the
default target platform for subsequent invocations of make. A file default target platform for subsequent invocations of make. A file
called Makefile.target containing the currently saved target is saved called Makefile.target containing the currently saved target is saved
in the project's directory. Makefiles used in the Contiki build in the project's directory.
system The Contiki build system is composed of a number of
Makefiles. These are: Beside TARGET= there's DEFINES= which allows to set arbitrary variables
for the C preprocessor in form of a comma-separated list. Again it is
possible to avoid having to re-type i.e. DEFINES=MYTRACE,MYVALUE=4711
by running make TARGET=esb DEFINES=MYTRACE,MYVALUE=4711 savedefines. A
file called Makefile.esb.defines is saved in the project's directory
containing the currently saved defines for the ESB platform.
Makefiles used in the Contiki build system The Contiki build system is
composed of a number of Makefiles. These are:
* Makefile: the project's makefile, located in the project directory. * Makefile: the project's makefile, located in the project directory.