* fatal error if Flex and Bison is not configured @ 2012-04-12 11:12 zhihao wang 2012-04-12 11:24 ` Ian Campbell 2012-04-12 11:29 ` Re : " David TECHER 0 siblings, 2 replies; 8+ messages in thread From: zhihao wang @ 2012-04-12 11:12 UTC (permalink / raw) To: xen-devel; +Cc: Ian.Campbell [-- Attachment #1.1: Type: text/plain, Size: 588 bytes --] Hi all, I try to build xen 4.2( revision number: 25161) on Ubuntu 11.10_amd64, Mac pro. After running ./configure and make. I got the following fatal error: *libxlu_cfg_y.y:22:26: fatal error: libxlu_cfg_l.h: No such file or directory compilation terminated.* So the original libxlu_cfg_l.h is deleted when making, and should be regenerated but it is not. I find the path of flex and bison is not set. When I add the correct path of flex and bison in tools.mk manually, This error is fixed. So, Is there anything in build scripts to modify to avoid this error ? Regards Wangzhihao [-- Attachment #1.2: Type: text/html, Size: 793 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: fatal error if Flex and Bison is not configured 2012-04-12 11:12 fatal error if Flex and Bison is not configured zhihao wang @ 2012-04-12 11:24 ` Ian Campbell 2012-04-12 13:28 ` George Dunlap 2012-04-13 10:04 ` Roger Pau Monne 2012-04-12 11:29 ` Re : " David TECHER 1 sibling, 2 replies; 8+ messages in thread From: Ian Campbell @ 2012-04-12 11:24 UTC (permalink / raw) To: zhihao wang; +Cc: xen-devel On Thu, 2012-04-12 at 12:12 +0100, zhihao wang wrote: > Hi all, > > I try to build xen 4.2( revision number: 25161) on Ubuntu 11.10_amd64, > Mac pro. After running ./configure and make. I got the following fatal > error: > > libxlu_cfg_y.y:22:26: fatal error: libxlu_cfg_l.h: No such file or > directory compilation terminated. > > > So the original libxlu_cfg_l.h is deleted when making, and should be > regenerated but it is not. Actually it should never have been deleted in the first place, unless you have been modifying the flex source. Please can you enumerate the exact steps you took, starting from the initial clone of the repo, which caused the file to be deleted? > I find the path of flex and bison is not set. When I add the correct > path of flex and bison in tools.mk manually, This error is fixed. Those tools should be optional since the generated files are checked in. However perhaps configure should detect and provide the paths but behave in a non-fatal manner if they aren't available? Roger, what do you think? Ian. ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: fatal error if Flex and Bison is not configured 2012-04-12 11:24 ` Ian Campbell @ 2012-04-12 13:28 ` George Dunlap 2012-04-12 14:05 ` Ian Campbell 2012-04-12 14:15 ` Dario Faggioli 2012-04-13 10:04 ` Roger Pau Monne 1 sibling, 2 replies; 8+ messages in thread From: George Dunlap @ 2012-04-12 13:28 UTC (permalink / raw) To: Ian Campbell; +Cc: zhihao wang, xen-devel On Thu, Apr 12, 2012 at 12:24 PM, Ian Campbell <Ian.Campbell@citrix.com> wrote: > On Thu, 2012-04-12 at 12:12 +0100, zhihao wang wrote: >> Hi all, >> >> I try to build xen 4.2( revision number: 25161) on Ubuntu 11.10_amd64, >> Mac pro. After running ./configure and make. I got the following fatal >> error: >> >> libxlu_cfg_y.y:22:26: fatal error: libxlu_cfg_l.h: No such file or >> directory compilation terminated. >> >> >> So the original libxlu_cfg_l.h is deleted when making, and should be >> regenerated but it is not. > > Actually it should never have been deleted in the first place, unless > you have been modifying the flex source. > > Please can you enumerate the exact steps you took, starting from the > initial clone of the repo, which caused the file to be deleted? > >> I find the path of flex and bison is not set. When I add the correct >> path of flex and bison in tools.mk manually, This error is fixed. > > Those tools should be optional since the generated files are checked in. > However perhaps configure should detect and provide the paths but behave > in a non-fatal manner if they aren't available? Roger, what do you > think? FWIW, I managed to get into a state where I ran into this error too; after a sequence of fairly random steps, it went away, and I wasn't able to reproduce it again. I have no idea what I did to get there in the first place, nor what I did to fix it. Zhihao: I think if you make a clean copy of the repo and run ./configure again, the problem will probably go away. -George ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: fatal error if Flex and Bison is not configured 2012-04-12 13:28 ` George Dunlap @ 2012-04-12 14:05 ` Ian Campbell 2012-04-12 14:10 ` Ian Jackson 2012-04-12 14:15 ` Dario Faggioli 1 sibling, 1 reply; 8+ messages in thread From: Ian Campbell @ 2012-04-12 14:05 UTC (permalink / raw) To: George Dunlap, Ian Jackson; +Cc: zhihao wang, xen-devel On Thu, 2012-04-12 at 14:28 +0100, George Dunlap wrote: > On Thu, Apr 12, 2012 at 12:24 PM, Ian Campbell <Ian.Campbell@citrix.com> wrote: > > On Thu, 2012-04-12 at 12:12 +0100, zhihao wang wrote: > >> Hi all, > >> > >> I try to build xen 4.2( revision number: 25161) on Ubuntu 11.10_amd64, > >> Mac pro. After running ./configure and make. I got the following fatal > >> error: > >> > >> libxlu_cfg_y.y:22:26: fatal error: libxlu_cfg_l.h: No such file or > >> directory compilation terminated. > >> > >> > >> So the original libxlu_cfg_l.h is deleted when making, and should be > >> regenerated but it is not. > > > > Actually it should never have been deleted in the first place, unless > > you have been modifying the flex source. > > > > Please can you enumerate the exact steps you took, starting from the > > initial clone of the repo, which caused the file to be deleted? > > > >> I find the path of flex and bison is not set. When I add the correct > >> path of flex and bison in tools.mk manually, This error is fixed. > > > > Those tools should be optional since the generated files are checked in. > > However perhaps configure should detect and provide the paths but behave > > in a non-fatal manner if they aren't available? Roger, what do you > > think? > > FWIW, I managed to get into a state where I ran into this error too; > after a sequence of fairly random steps, it went away, and I wasn't > able to reproduce it again. I have no idea what I did to get there in > the first place, nor what I did to fix it. I wonder if this is to do with timestamp skew or something like that cause false reruns of bison? Those would then fail (no bison) which in turn would cause make to delete the target. Perhaps we need to disable the flex and bison rules unless some magic flag is set (by those who are modifying the relevant sources)? CCing IanJ on the assumption he knows what's going on here.. > Zhihao: I think if you make a clean copy of the repo and run > ./configure again, the problem will probably go away. "hg revert <paths>" would probably do the job too. Ian. ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: fatal error if Flex and Bison is not configured 2012-04-12 14:05 ` Ian Campbell @ 2012-04-12 14:10 ` Ian Jackson 0 siblings, 0 replies; 8+ messages in thread From: Ian Jackson @ 2012-04-12 14:10 UTC (permalink / raw) To: Ian Campbell; +Cc: zhihao wang, George Dunlap, xen-devel Ian Campbell writes ("Re: [Xen-devel] fatal error if Flex and Bison is not configured"): > I wonder if this is to do with timestamp skew or something like that > cause false reruns of bison? Those would then fail (no bison) which in > turn would cause make to delete the target. Timestamp skew could certainly cause this. Is NFS involved ? Does the computer you're using have a stable, synchronised, clock ? Are you copying working trees about ? Are you using a tree actually cloned with hg ? It's also possible, I guess, that hg takes no special care with mtimes, in which case just "hg pull" might, if you were unlucky, update the files in different seconds and in the wrong order. > Perhaps we need to disable the flex and bison rules unless some magic > flag is set (by those who are modifying the relevant sources)? Well, we have configure now. We could enable those rules iff (suitably recent[1]) bison and flex were found. [1] The original reason why we checked these files into the tree was that shipped versions of Centos and RHEL had truly prehistoric versions which didn't support making properly reentrant scanners/parsers. Ian. ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: fatal error if Flex and Bison is not configured 2012-04-12 13:28 ` George Dunlap 2012-04-12 14:05 ` Ian Campbell @ 2012-04-12 14:15 ` Dario Faggioli 1 sibling, 0 replies; 8+ messages in thread From: Dario Faggioli @ 2012-04-12 14:15 UTC (permalink / raw) To: George Dunlap; +Cc: zhihao wang, Ian Campbell, xen-devel [-- Attachment #1.1: Type: text/plain, Size: 1088 bytes --] On Thu, 2012-04-12 at 14:28 +0100, George Dunlap wrote: > > Those tools should be optional since the generated files are checked in. > > However perhaps configure should detect and provide the paths but behave > > in a non-fatal manner if they aren't available? Roger, what do you > > think? > > FWIW, I managed to get into a state where I ran into this error too; > after a sequence of fairly random steps, it went away, and I wasn't > able to reproduce it again. > Same here, it occurred to me last week or something like that. > I have no idea what I did to get there in > the first place, nor what I did to fix it. > Me neither... AFAICR (as I was on an `hg clone'-ed repo) I checked out the original files that went missing by hand. :-( Sorry of not being able to help more. Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) [-- Attachment #1.2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 198 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: fatal error if Flex and Bison is not configured 2012-04-12 11:24 ` Ian Campbell 2012-04-12 13:28 ` George Dunlap @ 2012-04-13 10:04 ` Roger Pau Monne 1 sibling, 0 replies; 8+ messages in thread From: Roger Pau Monne @ 2012-04-13 10:04 UTC (permalink / raw) To: Ian Campbell; +Cc: zhihao wang, xen-devel El 12/04/2012, a las 12:24, Ian Campbell escribió: > On Thu, 2012-04-12 at 12:12 +0100, zhihao wang wrote: >> Hi all, >> >> I try to build xen 4.2( revision number: 25161) on Ubuntu 11.10_amd64, >> Mac pro. After running ./configure and make. I got the following fatal >> error: >> >> libxlu_cfg_y.y:22:26: fatal error: libxlu_cfg_l.h: No such file or >> directory compilation terminated. >> >> >> So the original libxlu_cfg_l.h is deleted when making, and should be >> regenerated but it is not. > > Actually it should never have been deleted in the first place, unless > you have been modifying the flex source. > > Please can you enumerate the exact steps you took, starting from the > initial clone of the repo, which caused the file to be deleted? > >> I find the path of flex and bison is not set. When I add the correct >> path of flex and bison in tools.mk manually, This error is fixed. > > Those tools should be optional since the generated files are checked in. > However perhaps configure should detect and provide the paths but behave > in a non-fatal manner if they aren't available? Roger, what do you > think? We stopped checking for bison and flex, but we left the variables, so if the user sets BISON and FLEX in their environment everything should be ok. Since this seems to be a common problem one possible solution is to check for BISON and FLEX on the libxl Makefile when needed (and in configure in a non fatal manner), and if not found, print an error message telling the user to rerun configure, instead of just failing ungracefully. I've just send a patch that I think fixes this issue. > > Ian. > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re : fatal error if Flex and Bison is not configured 2012-04-12 11:12 fatal error if Flex and Bison is not configured zhihao wang 2012-04-12 11:24 ` Ian Campbell @ 2012-04-12 11:29 ` David TECHER 1 sibling, 0 replies; 8+ messages in thread From: David TECHER @ 2012-04-12 11:29 UTC (permalink / raw) To: zhihao wang, xen-devel; +Cc: Ian.Campbell [-- Attachment #1.1: Type: text/plain, Size: 1116 bytes --] BISON=$(which bison) FLEX=$(which flex) CURL=$(which curl-config) XML=$(which xml2-config) ./configure ________________________________ De : zhihao wang <accept.acm@gmail.com> À : xen-devel@lists.xen.org Cc : Ian.Campbell@citrix.com Envoyé le : Jeudi 12 avril 2012 13h12 Objet : [Xen-devel] fatal error if Flex and Bison is not configured Hi all, I try to build xen 4.2( revision number: 25161) on Ubuntu 11.10_amd64, Mac pro. After running ./configure and make. I got the following fatal error: libxlu_cfg_y.y:22:26: fatal error: libxlu_cfg_l.h: No such file or directory compilation terminated. So the original libxlu_cfg_l.h is deleted when making, and should be regenerated but it is not. I find the path of flex and bison is not set. When I add the correct path of flex and bison in tools.mk manually, This error is fixed. So, Is there anything in build scripts to modify to avoid this error ? Regards Wangzhihao _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel [-- Attachment #1.2: Type: text/html, Size: 2178 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2012-04-13 10:04 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-04-12 11:12 fatal error if Flex and Bison is not configured zhihao wang 2012-04-12 11:24 ` Ian Campbell 2012-04-12 13:28 ` George Dunlap 2012-04-12 14:05 ` Ian Campbell 2012-04-12 14:10 ` Ian Jackson 2012-04-12 14:15 ` Dario Faggioli 2012-04-13 10:04 ` Roger Pau Monne 2012-04-12 11:29 ` Re : " David TECHER
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