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| pevster | Hiya - not sure if this is the right channel but I have a question about how ubuntu deals with modules...? | 15:20 |
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| pevster | I'm trying to build a custom version of a module thats normally in the kernel (can.ko) but not sure if there's a way under ubuntu to do it without re-building / re-installing the stock kernel? | 15:22 |
| pevster | Ideally UI'm looking for a pointer towards an existing example that I can just dissect ... | 15:22 |
| apw | pevster, you should be able to build against the "headers" in the normal way treating it as an out of tree driver | 15:40 |
| apw | of course if you have secure-boot in that environment you may have extra issues | 15:40 |
| pevster | apw: Thanks - nope, no secure boot here...! | 15:40 |
| pevster | apw: I also need to override a standard header, should that just work if I put my local include path ahead in the search? | 15:41 |
| apw | pevster, that i have not tried to do; i am rather spoilt as they builder i use for test builds takes 10m so i tend to just make a whole kernel | 15:42 |
| apw | pevster, though i would prolly just just ram over the one from the headers package as it is only used for these builds | 15:42 |
| pevster | 10m? My machine takes about 3 (!) :-O | 15:43 |
| pevster | For me it's more that I want to keep the ubuntu kernel standard and roll out the two modules onto stock test machines... | 15:43 |
| apw | yep i can see the use case :) | 15:44 |
| pevster | feels a bit dirty though :-D | 15:44 |
| pevster | not a fan of changing standard headers either but I can't see an alternate option... | 15:44 |
| apw | pevster, the headers an out of tree build uses are not /usr/include but only in /usr/src/* and only used for kernel module builds | 15:45 |
| pevster | Ah, thanks - I hadn't appreciated that! I'm used to normally just cross compiling whole kernels normally so this is a bit new! | 15:47 |
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| jsalisbury | om26er, Upstream is requesting some data and testing of a set of patches. I posted the requests to the bug report. | 16:11 |
| om26er | jsalisbury: yes, I replied to the bug. the latest kernel does not change anything and I have attached the logs | 16:12 |
| jsalisbury | om26er, great, thanks for the update. I'll see what they want to do next. | 16:12 |
| pevster | apw: Thanks for your help ; got most of it working, but can't see how to force my clone of the header to take priority over the "proper" one -the "-I" flag doesnt quite cut it.... | 17:13 |
| apw | pevster, i would just shove it into /usr/src over the top if it was me | 17:14 |
| apw | pevster, or like cp -lr /usr/src/<headers> to BUILD and then replace it in there, and build against that result | 17:16 |
| pevster | Hm... At the moment I've bodged it in the source by using a relative local path and defined the same protection var name to prevent the "proper" one getting included. A bit cludgey though | 17:17 |
| dgoulet | hi! so I'm having this problem since 4.8.y (vanilla) on Ubuntu with gcc 6.2.0-5ubuntu12: | 17:27 |
| dgoulet | Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken | 17:27 |
| dgoulet | whatever stackprotector I put, it fails with the same | 17:28 |
| apw | i think we specity gcc5 for the kernel build | 17:32 |
| dgoulet | hrm intersting... this is still failing: "make CC=gcc-5 -j4" | 17:35 |
| dgoulet | but could be the detection script | 17:35 |
| pevster | apw: Found it ; prepending LINUXINCLUDE | 17:39 |
| apw | pevster, sounds good | 17:53 |
| eagleeyes | infinity: what does dkms do? | 18:17 |
| eagleeyes | after the bcm kernel source package is installed does it need to have firmware cut? | 18:17 |
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