http://bugzilla.suse.com/show_bug.cgi?id=1171405 http://bugzilla.suse.com/show_bug.cgi?id=1171405#c2 --- Comment #2 from Matwey Kornilov <matwey.kornilov@gmail.com> --- You are right, the issue is present when dummy C file is compiled as the following: # avr-gcc -v -mmcu=atmega1284p test.c Using built-in specs. Reading specs from /usr/lib64/gcc/avr/10/device-specs/specs-atmega1284p COLLECT_GCC=avr-gcc COLLECT_LTO_WRAPPER=/usr/lib64/gcc/avr/10/lto-wrapper Target: avr Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 --enable-languages=c,c++ --enable-checking=release --disable-werror --with-gxx-include-dir=/usr/include/c++/10 --enable-ssp --disable-libssp --disable-libvtv --disable-cet --disable-libcc1 --disable-plugin --with-bugurl=https://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --with-slibdir=/lib64 --with-system-zlib --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --with-gcc-major-version-only --enable-linker-build-id --enable-linux-futex --enable-gnu-indirect-function --program-suffix=-10 --program-prefix=avr- --target=avr --disable-nls --with-sysroot=/usr/avr/sys-root --with-build-sysroot=/usr/avr/sys-root --with-build-time-tools=/usr/avr/bin --enable-lto --without-gxx-include-dir --with-native-system-header-dir=/include --build=x86_64-suse-linux --host=x86_64-suse-linux Thread model: single Supported LTO compression algorithms: zlib gcc version 10.1.1 20200507 [revision dd38686d9c810cecbaa80bb82ed91caaa58ad635] (SUSE Linux) COLLECT_GCC_OPTIONS='-v' '-mdouble=32' '-mlong-double=64' '-specs=device-specs/specs-atmega1284p' '-mmcu=avr51' /usr/lib64/gcc/avr/10/cc1 -quiet -v -imultilib avr51 -D__AVR_ATmega1284P__ -D__AVR_DEVICE_NAME__=atmega1284p test.c -mn-flash=2 -mno-skip-bug -quiet -dumpbase test.c -mdouble=32 -mlong-double=64 -mmcu=avr51 -auxbase test -version -o /tmp/ccLCyfEk.s GNU C17 (SUSE Linux) version 10.1.1 20200507 [revision dd38686d9c810cecbaa80bb82ed91caaa58ad635] (avr) compiled by GNU C version 7.5.0, GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/usr/avr/sys-root/usr/local/include" ignoring nonexistent directory "/usr/lib64/gcc/avr/10/../../../../avr/include" #include "..." search starts here: #include <...> search starts here: /usr/lib64/gcc/avr/10/include /usr/lib64/gcc/avr/10/include-fixed /usr/avr/sys-root/include End of search list. GNU C17 (SUSE Linux) version 10.1.1 20200507 [revision dd38686d9c810cecbaa80bb82ed91caaa58ad635] (avr) compiled by GNU C version 7.5.0, GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 00000000000000000000000000000000 COLLECT_GCC_OPTIONS='-v' '-mdouble=32' '-mlong-double=64' '-specs=device-specs/specs-atmega1284p' '-mmcu=avr51' /usr/lib64/gcc/avr/10/as -mmcu=avr51 -mgcc-isr -mno-skip-bug -o /tmp/cc6EkzVk.o /tmp/ccLCyfEk.s COMPILER_PATH=/usr/lib64/gcc/avr/10/:/usr/lib64/gcc/avr/10/:/usr/lib64/gcc/avr/:/usr/lib64/gcc/avr/10/:/usr/lib64/gcc/avr/:/usr/lib64/gcc/avr/10/../../../../avr/bin/ LIBRARY_PATH=/usr/lib64/gcc/avr/10/avr51/:/usr/avr/sys-root/lib/avr51/:/usr/lib64/gcc/avr/10/:/usr/lib64/gcc/avr/10/../../../../avr/lib/:/usr/avr/sys-root/lib/ COLLECT_GCC_OPTIONS='-v' '-mdouble=32' '-mlong-double=64' '-specs=device-specs/specs-atmega1284p' '-mmcu=avr51' /usr/lib64/gcc/avr/10/collect2 -plugin /usr/lib64/gcc/avr/10/liblto_plugin.so -plugin-opt=/usr/lib64/gcc/avr/10/lto-wrapper -plugin-opt=-fresolution=/tmp/cchQFPdl.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lm -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-latmega1284p --sysroot=/usr/avr/sys-root --build-id -mavr51 -Tdata 0x800100 /usr/avr/sys-root/lib/avr51/crtatmega1284p.o -L/usr/lib64/gcc/avr/10/avr51 -L/usr/avr/sys-root/lib/avr51 -L/usr/lib64/gcc/avr/10 -L/usr/lib64/gcc/avr/10/../../../../avr/lib -L/usr/avr/sys-root/lib /tmp/cc6EkzVk.o --start-group -lgcc -lm -lc -latmega1284p --end-group /usr/lib64/gcc/avr/10/ld: warning: -z relro ignored /usr/lib64/gcc/avr/10/ld: skipping incompatible /usr/lib64/gcc/avr/10/avr51/libgcc.a when searching for -lgcc /usr/lib64/gcc/avr/10/ld: skipping incompatible /usr/lib64/gcc/avr/10/libgcc.a when searching for -lgcc /usr/lib64/gcc/avr/10/ld: cannot find -lgcc collect2: error: ld returned 1 exit status -- You are receiving this mail because: You are on the CC list for the bug.