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# 09:29:35 |
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# 09:31:03 |
umbramalison |
hi, is it possible to build crosstool (standard cross) [+static,multilib] for GCC 4.8.5 from host fedora 24 with GCC 6.x ? i've been struggling.... |
# 10:12:26 |
umbramalison |
Also, just found that cloog 18.4 does not pass using the companion tool check, where as 18.1 does appear to pass. so perhaps this has been my issue (previously, i did not test the companion libraries/tools) |
# 10:21:29 |
umbramalison |
it failed on the final pass of gcc compiler, the error "cfns.gperf:101:1: error: 'const char* libc_name_p(const char*, unsigned int)' redeclared inline with 'gnu_inline' attribute" |
# 10:22:53 |
umbramalison |
i believe this is because gcc 6 (my host) changed the default gnu std.... so why does this error appear on the final compilation and not the first? |
# 10:41:41 |
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# 10:47:08 |
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# 10:50:09 |
umbramalison |
but there is also a patch for gcc, but i think its not for 4.8, but for 4.9 |
# 10:53:02 |
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# 11:01:22 |
umbramalison |
ok, so there is a patch for gcc 4.8 at least that looks to resolve this error. I still don't understand why the error occurs in the final stage however, as in why not before. |
# 11:01:57 |
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# 11:02:20 |
umbramalison |
sorry, i meant 4.9. specifically, the commit is not listed under 4.8. |
# 11:04:47 |
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# 11:09:26 |
umbramalison |
the patch won't be in 4.9.3, as this was released june 26 2015. so either i must update crosstools for 4.9.4 (August 3, 2016) or provide the specific patch to 4.9.3 - which is the better option i don't know. |
# 11:16:15 |
umbramalison |
as crosstools supports 5.4, which has this patch too. i'm going to try this route |
# 11:24:05 |
umbramalison |
got to go, i'll try to pop back to see if anyone is about later. |
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# 12:27:42 |
umbramalison |
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# 12:30:41 |
umbramalison |
hi, i was making some progress with crosstools. I have now a toolchain for gcc 5.4. I would like to use this as an external toolchain for buildroot, which includes a target compilation of QEMU - this fails with "Error: instruction `shrx' isn't supported in 16-bit mode." is this an issue in my toolchain? |
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# 12:56:00 |
muffindrake |
Greetings, I'm currently trying to build a toolchain for armv7-rpi2-linux-gnueabihf using ct |
# 12:56:17 |
muffindrake |
Is the tools supposed to run a couple thousand tasks (as shown in htop)? |
# 12:57:06 |
muffindrake |
I'm using ct-ng 1.22.0 |
# 12:58:48 |
umbramalison |
in the menuconfig there is a jobs specifier. the default is 0, which means that it will be automatically defined based on the number of execution units available. I suppose you could override it in the menuconfig to prove the theory |
# 12:59:08 |
muffindrake |
I ran the command with -j 8, isn't that equivalent? |
# 12:59:57 |
umbramalison |
hmm. i don't think that's advised. I don't know how crosstools works, but you probably don't want to run it in parallel |
# 13:00:18 |
umbramalison |
but to let it run its subtasks in parallel. quite different effect |
# 13:02:19 |
umbramalison |
ct-ng menuconfig -> Paths and misc options -> Number of parallel jobs (CT_PARALLEL_JOBS) |
# 13:03:12 |
umbramalison |
i'd set that to the number of logical execution units + 1 |
# 13:03:26 |
muffindrake |
Right, I'll see about that then |
# 13:04:47 |
umbramalison |
although, you might find your problem is resolved without changing it and just running ct-ng make (with no -j). |
# 13:05:37 |
umbramalison |
gtg. good luck. |
# 13:05:53 |
muffindrake |
Thanks and goodbye :p |
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