On 01/08/2020 11:40 PM, Igor Gnatenko wrote: > So this just means that packages do not respect the environment. What about > fixing them instead of trying to hack the environment? >
Do you mean that packages should be updated to respect the __cc and __cxx macros? -Tom > On Wed, Jan 8, 2020, 23:53 Tom Stellard <tstel...@redhat.com > <mailto:tstel...@redhat.com>> wrote: > > On 12/23/2019 11:59 AM, Tom Stellard wrote: > > On 12/21/2019 02:30 PM, Tomasz Kłoczko wrote: > >> > >> > >> On Sat, 21 Dec 2019 at 00:37, Neal Gompa <ngomp...@gmail.com > <mailto:ngomp...@gmail.com> <mailto:ngomp...@gmail.com > <mailto:ngomp...@gmail.com>>> wrote: > >> [..] > >> > >> I believe it's also used by the %cmake and %meson macros. > >> > >> > >> Yep. > >> Look on the output of the “rpm -E %cmake” and you will find that to > switch to other C and C++ compilers all what you need to do is redefine %__cc > and %__cxx macros, > > > > I'm not seeing this, at least with the current rawhide build, but I > > patched cmake to enable this in the latest mass rebuild that I'm doing. > > I'll post numbers on how effective using __cc and __cxx are once it's > > complete. > > > > I completed a rebuild of all rawhide with the following modifications: > > 1. Added this to %set_build_flags > > CC="${CC:-%{__cc}}" ; export CC ; \ > CXX="${CXX:-%{__cxx}}"; export CXX ; \ > > 2. Added %set_build_flags to %cmake macro > > 3. Remove -fstack-clash-protection and add -Qunused-arguments flags to > %optflags > > 4. Set these macros: > > config_opts['macros']['%__cc'] = "clang" > config_opts['macros']['%__cxx'] = "clang++" > config_opts['macros']['%__cpp'] = "clang-cpp" > config_opts['macros']['%build_cflags'] = optflags > config_opts['macros']['%build_cxxflags'] = optflags > > > Here are the results: > > Packages Built: 4228 > Built with clang: 2695 > Built with gcc: 1533 > > Based on grep'ing logs, around 320 of the packages built with gcc invoke > gcc using cc or c++. It's hard to know the exact number though, because > I'm not sure if all packages echo their build steps and also my grep > expressions > may not have caught everything. > > I suspect that if I can find some way to set the CC and CXX environment > variables for all builds, not just ones using autoconf, cmake or meson, > that might help cut down on the number of packages that still use gcc. > I'm just not quite sure how to implement this yet, but I'm looking into > it. > > -Tom > > > > -Tom > > > >> The same is with %configure and %meson, > >> > >> In other words you can switch NOW from non-root account to other > compiler without execution update-alternatives from root. > >> > >> In other words this proposal is pointless. > >> > >> kloczek > >> -- > >> -- > >> Tomasz Kłoczko | Tel: 0774 1209067 | LinkedIn: *http://lnkd.in/FXPWxH* > > _______________________________________________ > > devel mailing list -- devel@lists.fedoraproject.org > <mailto:devel@lists.fedoraproject.org> > > To unsubscribe send an email to devel-le...@lists.fedoraproject.org > <mailto:devel-le...@lists.fedoraproject.org> > > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > > List Archives: > https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org > > > _______________________________________________ > devel mailing list -- devel@lists.fedoraproject.org > <mailto:devel@lists.fedoraproject.org> > To unsubscribe send an email to devel-le...@lists.fedoraproject.org > <mailto:devel-le...@lists.fedoraproject.org> > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org > _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
