That is odd - are you able to compile a bare bones C++ file with the g++ you're using to build avr-gcc?
Regards Senthil On Thu, Jul 16, 2020 at 2:09 PM Klaus Rudolph <lts-rudo...@gmx.de> wrote: > > I try to compile gcc 10.1.0 for target avr. If fails with: > > > make[2]: Entering directory > '/home/krud/git_my_checkout/first/own_components/gcc_install/gcc/gcc-10.1.0/build/gcc' > g++ -c -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions > -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing > -Wwrite-strings -Wcast-qual -Wno-error=format-diag > -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long > -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H > -DGENERATOR_FILE -fno-PIE -I. -Ibuild -I../../gcc -I../../gcc/build > -I../../gcc/../include -I../../gcc/../libcpp/include \ > -o build/genmodes.o ../../gcc/genmodes.c > /opt/avr_10.1.0/avr/bin/as: unrecognized option '--64' > > > As I see it tries to use gcc to compile and link with avr-as which is > wrong. What did I wrong? > > > I simply do > make binutils > make gcc > with the following makefile > > > > > PREFIX=/opt > VERSION_BINUTILS=2.34 > VERSION_GCC=10.1.0 > GCC_DOWNLOAD_SUBDIR=gcc-10.1.0 > MPC_VERSION=1.0.3 > MPFR_VERSION=3.1.4 > GMP_VERSION=6.1.0 > > binutils: > mkdir binutils > ( cd binutils; \ > wget https://ftp.gnu.org/gnu/binutils/binutils-2.34.tar.xz; \ > tar xf binutils-2.34.tar.xz ; \ > cd binutils-2.34 ; \ > mkdir build ; \ > cd build ; \ > ../configure --target=avr --prefix=$(PREFIX)/avr_$(VERSION_GCC) ;\ > make -j8 ; \ > sudo make install ; \ > ) > > gcc: > mkdir gcc > ( cd gcc; \ > wget > https://ftp.gnu.org/gnu/gcc/$(GCC_DOWNLOAD_SUBDIR)/gcc-$(VERSION_GCC).tar.xz > ; \ > tar xf gcc-$(VERSION_GCC).tar.xz ; \ > cd gcc-$(VERSION_GCC)/ ; \ > wget > https://gcc.gnu.org/pub/gcc/infrastructure/mpc-$(MPC_VERSION).tar.gz ; \ > tar xf mpc-$(MPC_VERSION).tar.gz ; \ > mv mpc-$(MPC_VERSION) ./mpc ; \ > wget > https://gcc.gnu.org/pub/gcc/infrastructure/mpfr-$(MPFR_VERSION).tar.bz2 ; \ > tar xf mpfr-$(MPFR_VERSION).tar.bz2 ; \ > mv mpfr-$(MPFR_VERSION) ./mpfr ; \ > wget > https://gcc.gnu.org/pub/gcc/infrastructure/gmp-$(GMP_VERSION).tar.bz2 ; \ > tar xf gmp-$(GMP_VERSION).tar.bz2 ; \ > mv gmp-$(GMP_VERSION) ./gmp ; \ > mkdir build ; \ > cd build ; \ > ../configure --prefix=$(PREFIX)/avr_$(VERSION_GCC) --target=avr > --enable-languages=c,c++ --enable-lto --disable-nls --disable-libssp ; \ > make -j8 ; \ > sudo make install ; \ > ) > >
