Messages in this thread | | | Date | Fri, 30 Aug 2013 04:18:12 -0700 | From | Guenter Roeck <> | Subject | Re: [PATCH v2] h8300/kernel/setup.c: add "linux/initrd.h" to pass compiling |
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On 08/29/2013 11:34 PM, Chen Gang wrote: > On 08/30/2013 12:53 PM, Guenter Roeck wrote: >> On 08/29/2013 08:59 PM, Chen Gang wrote: >>> The related error (allmodconfig for h8300): >>> >>> arch/h8300/kernel/setup.c: In function 'setup_arch': >>> arch/h8300/kernel/setup.c:103:3: error: 'initrd_start' undeclared >>> (first use in this function) >>> initrd_start = memory_start; >>> ^ >>> arch/h8300/kernel/setup.c:103:3: note: each undeclared identifier >>> is reported only once for each function it appears in >>> arch/h8300/kernel/setup.c:104:3: error: 'initrd_end' undeclared >>> (first use in this function) >>> initrd_end = memory_start += be32_to_cpu(((unsigned long *) >>> (memory_start))[2]); >>> ^ >>> >>> Signed-off-by: Chen Gang <gang.chen@asianux.com> >>> --- >> >> Maybe an odd question, but is there a way to actually compile the h8300 >> target > > Firstly, at least for me, I don't think it is an odd question. :-) > > For the tool-chain: > > I compiled the cross-compiler from the gcc and binutils source code. > GCC has too many bugs to compile kernel with -Os (normal make will fail). > If without -Os (no optimization), it can work correctly which is enough for my goal: "let h8300 pass allmodconfig". ;-) > >>From building with allmodconfig for h8300: > > I can find more chances to provide contributes (both for h8300 and for others). > I can learn more in kernel wide. > I can familiar the gcc and binutils step by step (especially to familiar with their issues). > > Next: > > I will communicate/work with the gcc guys for the gcc issues which found by building kernel. > > :-) > > > >> in the first place ? The cross compiler on kernel.org doesn't work, nor >> does >> the one available through Ubuntu. >> >> Guenter >> > > For binutils, no release under Ubuntu, and the Fedora17's is incorrect > (can not use), but the binutils-2.22 from gnu is OK. > > For gcc, no release under Ubuntu, for Fedora17's, gcc-4.9, gcc-4.8, > gcc-4.7.4, and gcc-4.4.7 all have bugs for compiling kernel(their bugs > are different too). > > It is really not easy to fix these bugs (gcc guys have too many issues > to fix), even if really find the root cause, it is still difficult to > fix (fix one bug is very easy to cause another more issues). >
I have to wonder ... is this all worth it ? It almost looks like no one is using this architecture anymore. Do you have target hardware to test any of your changes ?
Thanks, Guenter
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