-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi! I'm finally working on this again.
On 14/08/2014 14:48, Sergei Golubchik wrote: >> It seems that STACK_DIRECTION is not automatically determined >> when >>> cross-compiling. I may determine the correct value for a given >>> target. But if I need a portable solution (and I need one in >>> order to create a buildroot package so that I can build for >>> many different target without too much hassle) I'm not sure >>> what my options are. It seems that the toolchain is aware of >>> this value since stack direction (or more precisely >>> STACK_GROWS_DOWNWARD) is set in >>> ./output/host/opt/ext-toolchain/lib/gcc/arm-none-linux-gnueabi/4.8.1/plugin/include/config/arm/arm.h >> >>> > Maybe there is a way to use this somehow? What do you think? May > be... These files are for building gcc plugins. How do I get to > this STACK_GROWS_DOWNWARD? And what if it's not defined or the file > doesn't exist? > After discussing this issue with the buildroot community it seems that it's not a good idea to try to use this file, at least with buildroot. Since most modern architectures have a stack that grows down. The only exception I know of is PA-RISC and it seems it's not supported by buildroot. Therefore I'll juste hardcode the correct value (-1). I'm sorry I can't propose a better solution :( However I've read here and there (for example [1]) that trying to determine to automatically determine the stack direction wasn't too reliable... So really, I don't know, but maybe this value should be harcoded? For example in an lsit of pairs (arch,stack_direction)? [1] http://stackoverflow.com/questions/664744/what-is-the-direction-of-stack-growth-in-most-modern-systems Regards, - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUPQ7nAAoJEEkkwl4JtJ9ygQkP/1wifqn7zQdByOvr+RTejfhS fYBIxgZ/HTfZAM0RpaIaJdcuTtfU++ITWr9NFQ/V/PNvSququ6NzRgTD2w5D+2ob nSj60uSCWDFkpwyMMQEhei9tZRZiMj+uaLCULkWDJwvsVLZ89uxGzOeW0YtFRAAA NStD1BPv8QzksRftDVZ/sLcImlhLvy+TsFrht8Ol48gOdQAtkWRVBu4FSUS0kyEF sXm12Ms9fr3bQyCkfm0FaWzUdrSvT74Mag6j2cbNB9pPRGzX3+I+mj4tTYHEqKx1 agK/hokFFFtEtPrYHo2aBVXy7TqoUg7Ra2kI5Vum9aJFnhdOBmxFzBKCKL/AdbeH s0B9X1WX6vYCN3o18EhUKJvun9yBtxDVVySxsMc/JWFU+UNqYsQe1eMm9r0qCpJQ 6CLff/NsNlNAjiBfDkR+SR0aUaMP6hYNBMb0O6u5W2LQhvlF0T42XYtlRqrnYsHn Ye8IDDMesmheSt5r4FpmZWANqcpiSw+/ZSucIc5qP9wRlSVj50n9r3vvZ48a13Pq qEaC6g/rZbQo++dXRMa8CbRxefSrYaZqwMJVXO3S/nvulPeQAu86iVISh3dcGl8Q D9kvC5owyW54psKcE34XgTQ+Bfb7/2Ij1dZ/0QTZSEqX0HW0WcLWD25zyWsRDJVp L9bwOtcNyAu2HYfpwOqx =FDe0 -----END PGP SIGNATURE----- _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : maria-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
