Hello! I've newbie question. Why , when i'm using "-flto" optimilization, i'm getting warning: "lto1: warning: SSE instruction set disabled, using 387 arithmetics lto1: warning: -fprefetch-loop-arrays not supported for this target (try -march switches) " ? Last lines from cimpilation log: i686-pc-linux-gnu-gcc -I.. -O2 -march=native -mfpmath=sse -pipe -fprefetch-loop-arrays -fomit-frame-pointer -flto -Wall -I/usr/include/readline -DWITH_IOCTLD -DIOCTLD_PATH=\"/usr/libexec/ioctld\" -DDATADIR=\"/usr/share/ekg\" -DSYSCONFDIR=\"/etc\" ioctld.c -o ioctld -lssl -lcrypto -ldl -lz -lgadu -lncurses -lreadline -ljpeg -lz -laspell ../compat/strlcat.o ../compat/strlcpy.o ioctld.c: In function âmainâ: ioctld.c:209:7: warning: ignoring return value of âchownâ, declared with attribute warn_unused_result lto1: warning: SSE instruction set disabled, using 387 arithmetics lto1: warning: -fprefetch-loop-arrays not supported for this target (try -march switches) gmake[1]: Opuszczenie katalogu `/var/tmp/portage/net-im/ekg-9999/work/ekg-9999/src' >>> Source compiled. I'm using: $ gcc -v Using built-in specs. COLLECT_GCC=/usr/i686-pc-linux-gnu/gcc-bin/4.5.1/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-linux-gnu/4.5.1/lto-wrapper Target: i686-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.5.1-r1/work/gcc-4.5.1/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/4.5.1 --includedir=/usr/lib/gcc/i686-pc-linux-gnu/4.5.1/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/4.5.1 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/4.5.1/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/4.5.1/info --with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/4.5.1/include/g++-v4 --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --enable-lto --enable-nls --without-included-gettext --with-system-zlib --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --disable-libssp --enable-esp --enable-libgomp --enable-cld --with-python-dir=/share/gcc-data/i686-pc-linux-gnu/4.5.1/python --enable-checking=release --disable-libgcj --with-arch=i686 --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened 4.5.1-r1 p1.3, pie-0.4.5' Thread model: posix gcc version 4.5.1 (Gentoo Hardened 4.5.1-r1 p1.3, pie-0.4.5) $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Pentium(R) Dual-Core CPU E6300 @ 2.80GHz stepping : 10 cpu MHz : 2799.998 cache size : 2048 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de tsc msr pae cx8 cmov pat clflush mmx fxsr sse sse2 ss ht nx constant_tsc aperfmperf pni vmx ssse3 dts tpr_shadow vnmi flexpriority bogomips : 5599.99 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: Thank you for help. Regards, Marcin
