https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70625
--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> --- 1. % armv7a-hardfloat-linux-gnueabihf-gcc-4.9.3 -v Using built-in specs. COLLECT_GCC=armv7a-hardfloat-linux-gnueabihf-gcc-4.9.3 COLLECT_LTO_WRAPPER=/usr/libexec/gcc/armv7a-hardfloat-linux-gnueabihf/4.9.3/lto-wrapper Target: armv7a-hardfloat-linux-gnueabihf Configured with: /var/tmp/portage/cross-armv7a-hardfloat-linux-gnueabihf/gcc-4.9.3/work/gcc-4.9.3/configure --host=x86_64-pc-linux-gnu --target=armv7a-hardfloat-linux-gnueabihf --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/armv7a-hardfloat-linux-gnueabihf/gcc-bin/4.9.3 --includedir=/usr/lib/gcc/armv7a-hardfloat-linux-gnueabihf/4.9.3/include --datadir=/usr/share/gcc-data/armv7a-hardfloat-linux-gnueabihf/4.9.3 --mandir=/usr/share/gcc-data/armv7a-hardfloat-linux-gnueabihf/4.9.3/man --infodir=/usr/share/gcc-data/armv7a-hardfloat-linux-gnueabihf/4.9.3/info --with-gxx-include-dir=/usr/lib/gcc/armv7a-hardfloat-linux-gnueabihf/4.9.3/include/g++-v4 --with-python-dir=/share/gcc-data/armv7a-hardfloat-linux-gnueabihf/4.9.3/python --enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --disable-nls --enable-checking=release --enable-esp --enable-libstdcxx-time --enable-poison-system-directories --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabihf --disable-bootstrap --enable-__cxa_atexit --enable-clocale=gnu --disable-multilib --disable-altivec --disable-fixed-point --with-float=hard --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --disable-libgcj --enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts --disable-libquadmath --enable-lto --with-cloog --disable-isl-version-check --enable-libsanitizer Thread model: posix gcc version 4.9.3 Memory hog. 2. % armv7m-softfloat-eabi-gcc-5.3.0 -v Using built-in specs. COLLECT_GCC=armv7m-softfloat-eabi-gcc-5.3.0 COLLECT_LTO_WRAPPER=/usr/libexec/gcc/armv7m-softfloat-eabi/5.3.0/lto-wrapper Target: armv7m-softfloat-eabi Configured with: /var/tmp/portage/cross-armv7m-softfloat-eabi/gcc-5.3.0/work/gcc-5.3.0/configure --host=x86_64-pc-linux-gnu --target=armv7m-softfloat-eabi --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/armv7m-softfloat-eabi/gcc-bin/5.3.0 --includedir=/usr/lib/gcc/armv7m-softfloat-eabi/5.3.0/include --datadir=/usr/share/gcc-data/armv7m-softfloat-eabi/5.3.0 --mandir=/usr/share/gcc-data/armv7m-softfloat-eabi/5.3.0/man --infodir=/usr/share/gcc-data/armv7m-softfloat-eabi/5.3.0/info --with-gxx-include-dir=/usr/lib/gcc/armv7m-softfloat-eabi/5.3.0/include/g++-v5 --with-python-dir=/share/gcc-data/armv7m-softfloat-eabi/5.3.0/python --enable-languages=c --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --disable-nls --enable-checking=release --enable-poison-system-directories --disable-shared --disable-libatomic --disable-threads --without-headers --disable-bootstrap --with-newlib --enable-multilib --disable-altivec --disable-fixed-point --with-float=soft --with-arch=armv7-m --with-mode=thumb --disable-libgcj --disable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts --disable-libquadmath --enable-lto --with-isl --disable-isl-version-check --disable-libsanitizer Thread model: single gcc version 5.3.0 Successful compilation.