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brho / akaros

Akaros Operating System
http://akaros.cs.berkeley.edu/
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Have difficult in building Cross compiler #38

Closed zhishuozheng closed 7 years ago

zhishuozheng commented 7 years ago

I tried to build cross compiler but it returns some error +cc[vmm]... fatal error: libelf.h: no such file or directory .... So that I install elfutils-libelf-devel. However, I have installed this package and the same mistake is still there. I have checked that the libelf.h have already existed in /usr/include. I don't know how to fix it and could anyone give me some idea?

Many thanks

akaros-notifier commented 7 years ago

Hi -

On 2017-04-25 at 2:57 zhishuozheng wrote:

I tried to build cross compiler but it returns some error +cc[vmm]... fatal error: libelf.h: no such file or directory .... So that I install elfutils-libelf-devel. However, I have installed this package and the same mistake is still there. I don't know how to solve it and could anyone give me some idea to fix it?

It sounds like you are running "make tests", but first you need to run

$ make apps-install

https://github.com/brho/akaros/blob/master/GETTING_STARTED.md#33-userspace

The complaint about libelf.h is for Akaros programs, so you need elfutils for Akaros - not your native Linux. "apps-install" will install our port of elfutils alongside the Akaros toolchain.

Barret

zhishuozheng commented 7 years ago

No, actually, I just tried to make X86_64 and it returns error such as

+cc[vmm]... fatal error: libelf.h: no such file or directory ....

akaros-notifier commented 7 years ago

On 2017-04-25 at 6:20 zhishuozheng wrote:

No, actually, I just tried to make X86_64 and it returns error such as

+cc[vmm]... fatal error: libelf.h: no such file or directory ....

Ah! This is probably due to Ron's patch from last week (moved some elf stuff to the VMM library), creating a circular dependency. You'd only notice the problem if you did a toolchain rebuild.

I'll try to come up with a fix and get back to you.

Barret

akaros-notifier commented 7 years ago

Hi -

On 2017-04-25 at 06:20 zhishuozheng notifications@github.com wrote:

No, actually, I just tried to make X86_64 and it returns error such as

+cc[vmm]... fatal error: libelf.h: no such file or directory ....

I pushed a patch that fixes the problem for me. Hopefully it works for you too. If not, let me know. =)

Thanks for the report!

Barret

zhishuozheng commented 7 years ago

Thanks for you information. I am new to Linux and akaros. So I don't know what did "pushed a patch" mean. Could you tell me in detail?

Many thanks emma

zhishuozheng commented 7 years ago

Thanks for your information. I pull it from github agian. And it fixes the problem.