Re: [ccache] ccache error: Failed to create temporary file... Read-only file system
Hi all! On 24/10/2021 15:12, Raju C K via ccache wrote: [...] The system worked fine earlier, in the same environment, where .ccache directory was read-write mounted system. No changes have been made to the configuration. Strange - I don't think - I fail to see any somewhat valid reason that - it makes sense to try to get ccache to work with a read-only cache directory Even if one disables all statistic stuff (in case that is possible - I never tried that) Error came up as a complete surprise, and I just wanted to verify whether any changes were made to ccache-4 that would throw up that warning. I will keep investigating and will report back here, if I overcome this hurdle. Kind regards, Bernd -- Bernd Petrovitsch Email : be...@petrovitsch.priv.at LUGA : http://www.luga.at ___ ccache mailing list ccache@lists.samba.org https://lists.samba.org/mailman/listinfo/ccache
Re: [ccache] ccache error: Failed to create temporary file... Read-only file system
Hi all! On 22/10/2021 18:48, Raju C K via ccache wrote: [...] I am trying to build bootimage from kernel sources for android. I have ccache enabled with max_size 90G. The ccache version is 4.2.1 Compilation stops, throwing a "ccache error: Failed to create temporary file /home/ck/.ccache/tmp/tmp.a.Xdafd Read only file system". ccache *caches* something and writes the cache to some filesystem. Obviously, that should be - thus - writable. And obviously, the home directory of that use (or at least the /home/ck/.ccache directory) is on a read-only mounted filesystem. You need to tell more about your compiling environment (I never built something for Android anywhere ...). Can anyone help or show some resources to read/refer ? Any basic Unix book/documentation should mention "rw vs ro" mounts of filesystems (of any type) ... Kind regards, Bernd -- Bernd Petrovitsch Email : be...@petrovitsch.priv.at LUGA : http://www.luga.at ___ ccache mailing list ccache@lists.samba.org https://lists.samba.org/mailman/listinfo/ccache
Re: [ccache] gmake and ccache conspiring together in creating gremlins
Hi all!
On 07/02/2021 16:45, Sam Varshavchik via ccache wrote:
[...]
> In the interim I discovered a workaround that seems to work, for
> anyone who's also affected by this. Instead of setting CCACHE_PREFIX
> to distcc, I pointed CCACHE_PREFIX to this:
>
> #! /bin/sh
>
> unset MFLAGS ${!MAKE@}
> exec distcc "$@"
>
> This clears make variables from the environment and when the linker
> invokes make for ...whatever it needs to invoke it for, against a
> manufactured makefile it generates on the fly... it doesn't go look
> for the job server file descriptors, and go sideways.
Hmm, with the whole thread: Shouldn't better the linker (or whatever
tool) cleanup the environment variables before invoking `make` (or
whatever programs) to fix the - IMHO - core cause of the bug?
MfG,
Bernd
--
Bernd Petrovitsch Email : be...@petrovitsch.priv.at
LUGA : http://www.luga.at
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Re: [ccache] ccache on generated C++ files...
On 25/06/2019 00:28, Malfettone, Kris via ccache wrote: > So what I seem to be observing is only when I do a ninja -t clean or make > clean. This removes all of my generated files (.h and .cpp files) and of > course the normal build outputs. A subsequent run is then mostly cache > misses. If I say manually do a rm $(find -name "*.o") then I get a 100% > cache hit rate. I had assumed it was due to the fact that the generated > files would have a newer mtime and ctime. My assumption must be wrong. TTBOMK ccache ignores mtime/ctime/... (as make/ninja/... use that anyway before) but only the preprocessed content matters. IIUC, the `make clean` removes all *.o and all generated .h/.c/.hpp/.cpp files. The rm $(find -name "*.o") removes only *.o. So the analysis above is at least incomplete. Are you really sure the newly generated .h/.c/.hpp/.cpp files are identical (enough)? No static variables or expanded preprocessor #defines with the build date+time or similar in there? [ Fullquote deleted ] MfG, Bernd -- Bernd Petrovitsch Email : be...@petrovitsch.priv.at LUGA : http://www.luga.at ___ ccache mailing list ccache@lists.samba.org https://lists.samba.org/mailman/listinfo/ccache
