Hi Dima, Here are the commands and outputs ~$ which cpp /usr/bin/cpp ~$ file /lib/cpp /lib/cpp: symbolic link to /etc/alternatives/cpp
~$ file /etc/alternatives/cpp /etc/alternatives/cpp: symbolic link to /usr/bin/cpp ~$ cpp -v Using built-in specs. COLLECT_GCC=cpp Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10' ... On Friday, June 3, 2016 at 10:46:40 PM UTC+10, Dima Pasechnik wrote: > > what is the output of `which cpp`? > > normally, /lib/cpp (what pops up in your error message) > should be a symbolic link to /etc/alternatives/cpp ` like this: > $ file /lib/cpp > /lib/cpp: symbolic link to `/etc/alternatives/cpp' > $ file /etc/alternatives/cpp > /etc/alternatives/cpp: symbolic link to `/usr/bin/cpp' > > and now /usr/bin/cpp should exist and be what it should be > $ which cpp > /usr/bin/cpp > $ cpp -v > Using built-in specs. > COLLECT_GCC=cpp > Target: x86_64-linux-gnu > ... > > > > On Friday, June 3, 2016 at 5:53:30 AM UTC+1, Adetokunbo Arogbonlo wrote: >> >> Hi, >> Sagemath7.2 fails to compile from source on Debian 8.4. It gives the >> following error: >> >> configure: error: in `/home/seyi/sage/7.2/source/sage-7.2': >> configure: error: C++ preprocessor "/lib/cpp" fails sanity check >> See `config.log' for more details >> If you would like to try to build Sage anyway (to help porting), >> export the variable 'SAGE_PORT' to something non-empty. >> Makefile:24: recipe for target 'build/make/Makefile' failed >> make[1]: *** [build/make/Makefile] Error 1 >> make[1]: Leaving directory '/home/seyi/sage/7.2/source/sage-7.2' >> Makefile:16: recipe for target 'all' failed >> make: *** [all] Error 2 >> >> I have attached a copy of the config logs and the make logs. >> Please advise men on how to proceed. >> >> Regards >> Adetokunbo >> > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.