Hi Gabe, Thanks for the reply. Actually I have managed to decode the problem before the last weekend. Yes, it is actually not due to “finding the sys/mman.h” but something very unrelated (“CC” variable wrong).
It seems the configure made two tries for the conf_13 and conf_14 . First time without –lrt and the 2nd try with –lrt which could lead to a success. Can you give me a pointer where this logic is in the code base? I think this is interesting which if I know this Earlier, the issue can be solved earlier. Regards Yao 发件人: Gabe Black [mailto:gabe.bl...@gmail.com] 发送时间: 2022年1月8日 9:29 收件人: gem5 users mailing list <gem5-users@gem5.org> 抄送: yaogang <yaogan...@hisilicon.com> 主题: Re: [gem5-users] gem5 Hi Yao, please copy text into emails and don't use screenshots. What SCons is doing is that it's trying to compile a small program which includes sys/mman.h, links against either no additional library or the "rt" library, and includes a call to shm_open(). https://gem5.googlesource.com/public/gem5/+/refs/heads/develop/src/mem/SConsopts#35 If that does not compile for some reason, then gem5 will print that message. You can find a log of the output of when gem5 tried to compile that program in your build directory in build/scons_config.log where you can check for any error messages. I'm not sure exactly what you mean by adding it to your path variable, but if you mean PATH, that's not how include files are found. Since this also potentially tries tries to link against librt, it could be that it finds the header just fine but can't link against the library for some reason. In any case, if you look at that log file, it should give you an error message which will help you get started figuring this out. Gabe On Thu, Jan 6, 2022 at 2:27 AM yaogang via gem5-users <gem5-users@gem5.org<mailto:gem5-users@gem5.org>> wrote: Hi, My gem5 used to work fine but suddenly can not build due to the following warning I think( it will complain shm_open not finding the library) [cid:image001.png@01D8064F.C905E760] I set the /usr/include into my path variable and it should be there . I saw there is a jira ticket on it but it doesn’t seem to solve the issue https://gem5-review.googlesource.com/c/public/gem5/+/47659/7..8 Regards Yao _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org<mailto:gem5-users@gem5.org> To unsubscribe send an email to gem5-users-le...@gem5.org<mailto:gem5-users-le...@gem5.org> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
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