Tu peux ajouter la sortie de cmake a ton message? Pas dispo ce matin. B Le jeu. 28 mars. 2019 00:58, François <francois.kn...@gmail.com> a écrit :
> Thanks for your help. I'm on kubuntu 18.04 (cmake 3.10.2), and maybe our > versions mismatch is at the origin of the issue (I finally found a > solution, see the bottom of this message). > By "installing" ccache I meant in fact "enable/use" ccache, I also > installed it with "apt install ccache". Of course, I always start from an > empty build dir. > > Now I restarted everything with a clean $PATH, reverting my changes. Using > export CC and CXX doesn't work: > >> export CC="ccache gcc" >> export CXX="ccache g++" >> cmake -DCMAKE_INSTALL_PREFIX=../install ../trunk >> [...] >> *ccache: error: Could not find compiler "g++" in PATH* >> > Somebody had the same issue here: > https://github.com/bazelbuild/bazel/issues/3642 so I tried unsuccessfully > : > >> rm -r * >> export CC="ccache /usr/bin/gcc" >> export CXX="ccache /usr/bin/g++" >> cmake -DCMAKE_INSTALL_PREFIX=../install ../trunk >> [...] >> */usr/bin/ccache: invalid option -- 'd'* >> > I didn't found exactly why, but somewhere the "-d" option is passed > directly to ccache (instead of gcc/g++ I assume), but not in your 16.04 > system. > > So I tried two methods to use $PATH instead of $CXX and $CC: > - the one in ccache documentation, with symlinks : > https://ccache.samba.org/manual/latest.html#_run_modes > - the one we can find everywhere with export PATH="/usr/lib/ccache:$PATH" > But the result is finally the same as above. > > *OUTCOME*: > I feel a bit confused as I spent some time to make it work to finally see > that cmake handles ccache since version 3.4: > https://cmake.org/cmake/help/v3.6/release/3.4.html#variables > Without environment variables nor symlinks, the solution basically is to > run cmake with "*-DCMAKE_CXX_COMPILER_LAUNCHER=ccache > -DCMAKE_C_COMPILER_LAUNCHER=ccache*" > Now ccache is activated, after a successful build I have 720.9 MB in > cache, yade full build in 30s yeepee :-D > This solution should also work for ubuntu 16.04 as it carries cmake 3.5, > but not for ubuntu 14.04. > > NB: Interestingly, compiling [yade with python 3] for the first time with > the full ccache of [yade with python 2.7] took about 5 mins against about > 30min for a full uncached build. > > Cheers, > François > > > > > Le mer. 27 mars 2019 à 20:40, Bruno Chareyre < > bruno.chare...@3sr-grenoble.fr> a écrit : > >> I checked your ubuntu 12.04 page again. That's actually about hiding >> ccache behind normal gcc invocation, and I kind-of dislike the idea. >> Explicit call to «ccache g++» sounds cleaner to me and it is compatible >> with mpicxx (for ubuntu 16.04 at least). >> Better undo what you have done until now in terms of ccache hacks and >> stick to yade doc's method if you are unsure. >> >> «ccache -s» also reports unsupported options on my ubuntu 16.04 but a >> full rebuild takes 40sec regardless. >> >> Bruno >> >> Le mer. 27 mars. 2019 19:46, Bruno Chareyre < >> bruno.chare...@3sr-grenoble.fr> a écrit : >> >>> Also, did you start from fresh build after exporting CXX? >>> I mean: >>> rm -rf ./* >>> export ... >>> cmake [options] >>> make -jN >>> >>> Bruno >>> >>> Le mer. 27 mars. 2019 18:33, Bruno Chareyre < >>> bruno.chare...@3sr-grenoble.fr> a écrit : >>> >>>> Hi François, >>>> >>>> Please remember to give your linux version. >>>> >>>> On Wed, 27 Mar 2019 at 17:44, François <francois.kn...@gmail.com> >>>> wrote: >>>> >>>>> export CXX=ccache g++ >>>>> >>>>>> bash: export: « g++ » : identifiant non valable >>>>>> >>>>> Using >>>>> >>>>>> export CXX='ccache g++' >>>>> >>>>> works >>>>> >>>> >>>> Thanks for pointing that out. I forgot the " indeed, I'll fix it. >>>> It would be useful to turn your bash to english for pasting errors here >>>> (also much more efficient when searching online solutions). >>>> >>>> >>>> >>>>> but it will result in cmake fail while checking cc compiler. >>>>> Finally, I "installed" ccache thanks to the first answer here: >>>>> https://askubuntu.com/questions/470545/how-do-i-set-up-ccache and it >>>>> *kinda* works. >>>>> >>>> >>>> Arguably, using ccache is assuming that it is installed. ;) >>>> Not sure why you needed that ubuntu 12.04 forum, as far as I remember I >>>> only had to "apt-get install ccache". >>>> >>>> >>>>> >>>>> - the second one, once the install is ok and cmake uses ccache, is >>>>> that I only get "unsupported compiler option" when I try *ccache >>>>> -s* after a full yade compilation. It results in a almost-empty >>>>> cache: >>>>> >>>>> >>>> Does compilation work? >>>> Could you send cmake output, and some sample of "make VERBOSE=1"? >>>> >>>> I have this: >>>> >>>> *[ 39%] Building CXX object >>>> CMakeFiles/yade.dir/pkg/dem/Ig2_Box_Sphere_ScGeom.cpp.o/usr/bin/ccache >>>> g++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DNDE...* >>>> >>>> Cheers >>>> >>>> Bruno >>>> >>>> _______________________________________________ >> Mailing list: https://launchpad.net/~yade-dev >> Post to : yade-dev@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~yade-dev >> More help : https://help.launchpad.net/ListHelp >> > _______________________________________________ > Mailing list: https://launchpad.net/~yade-dev > Post to : yade-dev@lists.launchpad.net > Unsubscribe : https://launchpad.net/~yade-dev > More help : https://help.launchpad.net/ListHelp >
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