Different directories for source and object
Dear U-Boot community!
I would like to use separate directories for source and object file when compiling U-Boot, like it is possible for the Linux kernel 2.6.x. Unfortunately in U-Boot there are generated source and configuration files which also would have to be moved to the object file directories.
The reason for such a separation is that I would like to use a common source tree for several hardware configurations of the target system; a global "make all" should create all configurations at once.
Has somebody tried this?
With best regards
Andreas Schweigstill
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Dipl.-Phys. Andreas Schweigstill Schweigstill IT | Embedded Systems Schauenburgerstra?e 116, D-24118 Kiel, Germany Phone: (+49) 431 5606-435, Fax: (+49) 431 5606-436 Mobile: (+49) 171 6921973, Web: http://www.schweigstill.de/
Quoted 3 lines · In message <[email protected]> you wrote:
I would like to use separate directories for source and object file when compiling U-Boot, like it is possible for the Linux
Submit a patch :-)
Quoted 3 lines
kernel 2.6.x. Unfortunately in U-Boot there are generated source and configuration files which also would have to be moved to the object file directories.
As long as you remember to re-build it after new files get added you can use a sym-linked tree for building.
Quoted 4 lines
The reason for such a separation is that I would like to use a common source tree for several hardware configurations of the target system; a global "make all" should create all configurations at once.
"At once" is probably not feasible, unless you have a massively parallel build host ;-) And if you have to build targets more or less sequentially, then you can actually do it sequentially. I don't see any immediate advantage over - for example - a trivial script like this:
IMAGES="u-boot.bin u-boot.srec u-boot.map System.map"
for board in ${LIST} ; do
mkdir -p ../images/${board}/
./MAKEALL ${board} && cp -l ${IMAGES} ../images/${board}/
done[Note: even on a fast SMP machine there is no significant difference between building N targets in parallel or sequentially.]
Best regards,
Wolfgang Denk
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Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de "Life and death are seldom logical." "But attaining a desired goal always is." -- McCoy and Spock, "The Galileo Seven", stardate 2821.7