Hi, This is the error I got when trying to compile Sage 5.3 from source.
************** make[5]: Entering directory `/home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build/i686-pc-linux-gnu/libgcc' # If this is the top-level multilib, build all the other # multilibs. /home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build/./gcc/xgcc -B/home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build/./gcc/ -B/home/miguel/Downloads/sage-5.3/local/i686-pc-linux-gnu/bin/ -B/home/miguel/Downloads/sage-5.3/local/i686-pc-linux-gnu/lib/ -isystem /home/miguel/Downloads/sage-5.3/local/i686-pc-linux-gnu/include -isystem /home/miguel/Downloads/sage-5.3/local/i686-pc-linux-gnu/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -fno-stack-protector -I. -I. -I../.././gcc -I../../../src/libgcc -I../../../src/libgcc/. -I../../../src/libgcc/../gcc -I../../../src/libgcc/../include -I../../../src/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c ../../../src/libgcc/../gcc/libgcc2.c \ -fvisibility=hidden -DHIDE_EXPORTS In file included from /usr/include/stdio.h:28:0, from ../../../src/libgcc/../gcc/tsystem.h:87, from ../../../src/libgcc/../gcc/libgcc2.c:29: /usr/include/features.h:324:26: fatal error: bits/predefs.h: No such file or directory compilation terminated. make[5]: *** [_muldi3.o] Error 1 make[5]: Leaving directory `/home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build/i686-pc-linux-gnu/libgcc' make[4]: *** [all-stage1-target-libgcc] Error 2 make[4]: Leaving directory `/home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build' make[3]: *** [stage1-bubble] Error 2 make[3]: Leaving directory `/home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/miguel/Downloads/sage-5.3/spkg/build/gcc-4.6.3/gcc-build' real 11m36.210s user 6m10.967s sys 0m47.003s ************************************************************************ Error installing package gcc-4.6.3 ************************************************************************ Please email sage-devel (http://groups.google.com/group/sage-devel) ********** And so here I am, hoping for a suggestion. I am running Xubuntu 12.04 on an old Compaq laptop (1.6 GHz Celeron M). All dependencies have been installed. In particular, here is what I get when I type gcc --version: miguel@Paloma:~/Downloads/sage-5.3$ gcc --version gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3 Copyright (C) 2011 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Thank you for reading this. Best wishes, Miguel-Angel Manrique -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.