On 30.04.2017 13:23, Dan Johansson wrote: > After upgrading GCC to 5.4.0 (from 4.9.3) I can no longer compile my > sketches. > > At the end of the compile phase a get the following linker error: > > avr-gcc -Os -Wl,--gc-sections -mmcu=atmega32u4 -o > /tmp/build881550966608502477.tmp/Blinky.cpp.elf > /tmp/build881550966608502477.tmp/Blinky.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/hsv2rgb.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/wiring.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/colorutils.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/colorpalettes.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/lib8tion.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/FastLED.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/bitswap.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/power_mgt.cpp.o > /tmp/build881550966608502477.tmp/FastLED313/noise.cpp.o > /tmp/build881550966608502477.tmp/core.a > -L/tmp/build881550966608502477.tmp -lm > /usr/libexec/gcc/avr/ld: cannot find crtatmega32u4.o: No such file or > directory > /usr/libexec/gcc/avr/ld: cannot find -latmega32u4 > collect2: error: ld returned 1 exit status > > And sure enough, there is not "crtatmega32u4.o" on this system (and only > one file with "atmega32u4" in the filename: > /usr/lib64/gcc/avr/5.4.0/device-specs/specs-atmega32u4). > > I have tried to reinstall the avr-crossdev-toolchain: > crossdev -C avr > USE="-openmp -hardened -sanitize -vtv" crossdev -s4 -S --target avr > ln -s /usr/lib64/binutils/avr/2.26.1/ldscripts /usr/avr/lib/ldscript > > > And just to be sure I have also re-emerged: > dev-embedded/avrdude > dev-embedded/arduino > > Any suggestions what I am missing? >
With last nights sync, avr-gcc-4.9.4 was pulled back in (slotted). Selecting 4.9.4 instead of 5.4.0 solves the issue, I can now compile for avr again: $ avr-gcc -Os -Wl,--gc-sections -mmcu=atmega32u4 test.c $ file a.out a.out: ELF 32-bit LSB executable, Atmel AVR 8-bit, version 1 (SYSV), statically linked, not stripped -- D/\N *************************************************** This message is printed on 100% recycled electrons! ***************************************************
