On Sat, Mar 22, 2014 at 01:29:56PM +0100, Paolo Patruno wrote: > I want try to use gcc 4.9. > Starting from a working toolchain of Fedora 19 with avr-gcc 4.8; I get > the last snapshot and buid it inside rpm build system with: > ../gcc-4.9/configure --prefix=/usr --mandir=/usr/share/man > --infodir=/usr/share/info --target=avr --enable-languages=c,c++ - > -disable-nls --disable-libssp --with-system-zlib > --enable-version-specific-runtime-libs --with-pkgversion=Fedora > 4.9-1.fc19 --with-bugurl=https://bugzilla.redhat.com/ > > I install the rpm and compile works well but at link stage: > > /usr/bin/avr-gcc -mmcu=atmega328p -Wl,--gc-sections -Wl,-Map -Wl,t.map -o > .build/uno/firmware.elf .build/uno/src/helloworld_rx.o -v > Using built-in specs. > COLLECT_GCC=/usr/bin/avr-gcc > COLLECT_LTO_WRAPPER=/usr/libexec/gcc/avr/4.9.0/lto-wrapper > Target: avr > Configured with: ../gcc-4.9/configure --prefix=/usr --mandir=/usr/share/man > --infodir=/usr/share/info --target=avr --enable-languages=c,c++ --disable-nls > --disable-libssp --with-system-zlib --enable-version-specific-runtime-libs > --with-pkgversion='Fedora 4.9-1.fc19' > --with-bugurl=https://bugzilla.redhat.com/ > Thread model: single > gcc version 4.9.0 20140316 (experimental) (Fedora 4.9-1.fc19) > COMPILER_PATH=/usr/libexec/gcc/avr/4.9.0/:/usr/libexec/gcc/avr/4.9.0/:/usr/libexec/gcc/avr/:/usr/lib/gcc/avr/4.9.0/:/usr/lib/gcc/avr/:/usr/lib/gcc/avr/4.9.0/../../../../avr/bin/ > LIBRARY_PATH=/usr/lib/gcc/avr/4.9.0/avr5/:/usr/lib/gcc/avr/4.9.0/../../../../avr/lib/avr5/:/usr/lib/gcc/avr/4.9.0/:/usr/lib/gcc/avr/4.9.0/../../../../avr/lib/ > COLLECT_GCC_OPTIONS='-mmcu=atmega328p' '-o' '.build/uno/firmware.elf' '-v' > /usr/libexec/gcc/avr/4.9.0/collect2 -plugin > /usr/libexec/gcc/avr/4.9.0/liblto_plugin.so > -plugin-opt=/usr/libexec/gcc/avr/4.9.0/lto-wrapper > -plugin-opt=-fresolution=/tmp/ccaF7CSb.res -plugin-opt=-pass-through=-lgcc > -plugin-opt=-pass-through=-lm -plugin-opt=-pass-through=-lc -m avr5 -Tdata > 0x800100 -o .build/uno/firmware.elf > /usr/lib/gcc/avr/4.9.0/../../../../avr/lib/avr5/crtm328p.o > -L/usr/lib/gcc/avr/4.9.0/avr5 > -L/usr/lib/gcc/avr/4.9.0/../../../../avr/lib/avr5 -L/usr/lib/gcc/avr/4.9.0 > -L/usr/lib/gcc/avr/4.9.0/../../../../avr/lib --gc-sections -Map t.map > .build/uno/src/helloworld_rx.o --start-group -lgcc -lm -lc --end-group > /usr/lib/gcc/avr/4.9.0/../../../../avr/bin/ld: skipping incompatible > /usr/lib/gcc/avr/4.9.0/avr5/libgcc.a when searching for -lgcc > /usr/lib/gcc/avr/4.9.0/../../../../avr/bin/ld: skipping incompatible > /usr/lib/gcc/avr/4.9.0/libgcc.a when searching for -lgcc > /usr/lib/gcc/avr/4.9.0/../../../../avr/bin/ld: cannot find -lgcc > collect2: error: ld returned 1 exit status > > > objdump results: > > avr-objdump -f .build/uno/src/helloworld_rx.o > > .build/uno/src/helloworld_rx.o: file format elf32-avr > architecture: avr:5, flags 0x00000011: > HAS_RELOC, HAS_SYMS > start address 0x00000000 > > > > avr-objdump -f /usr/lib/gcc/avr/4.9.0/avr5/libgcc.a|head -n 20 > In archive /usr/lib/gcc/avr/4.9.0/avr5/libgcc.a: > > _absvhi2.o: file format elf32-little > architecture: UNKNOWN!, flags 0x00000011: > HAS_RELOC, HAS_SYMS > start address 0x00000000 >
That's weird - can you check the configure/make logs in the build folder to see how this was compiled? FWIW, with the latest sources of binutils and gcc, this is the output on my machine. $ ~/scratch/avr/install/bin/avr-objdump -f /home/saaadhu/scratch/avr/install/lib/gcc/avr/4.9.0/avr5/libgcc.a | head -n20 In archive /home/saaadhu/scratch/avr/install/lib/gcc/avr/4.9.0/avr5/libgcc.a: _absvhi2.o: file format elf32-avr architecture: avr:5, flags 0x00000011: HAS_RELOC, HAS_SYMS start address 0x00000000 _addvhi3.o: file format elf32-avr architecture: avr:5, flags 0x00000011: HAS_RELOC, HAS_SYMS start address 0x00000000 _subvhi3.o: file format elf32-avr architecture: avr:5, flags 0x00000011: HAS_RELOC, HAS_SYMS start address 0x00000000 $ ~/scratch/avr/install/bin/avr-as -v GNU assembler version 2.24.51 (avr) using BFD version (GNU Binutils) 2.24.51.20131021 ^C Regards Senthil _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org https://lists.nongnu.org/mailman/listinfo/avr-gcc-list
