https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62100
--- Comment #4 from Peter A. Bigot <pab at pabigot dot com> --- It's not obvious to me: beaglebone[98]$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/gcc/arm-poky-linux-gnueabi/4.9.1/lto-wrapper Target: arm-poky-linux-gnueabi Configured with: /prj/oe/omap/build-beaglebone-master/tmp/work-shared/gcc-4.9.1-r0/gcc-4.9.1/configure --build=x86_64-linux --host=arm-poky-linux-gnueabi --target=arm-poky-linux-gnueabi --prefix=/usr --exec_prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib/gcc --datadir=/usr/share --sysconfdir=/etc --sharedstatedir=/com --localstatedir=/var --libdir=/usr/lib --includedir=/usr/include --oldincludedir=/usr/include --infodir=/usr/share/info --mandir=/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/prj/oe/omap/build-beaglebone-master/tmp/sysroots/beaglebone --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --enable-multilib --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-poky-linux-gnueabi- --without-local-prefix --enable-target-optspace --enable-lto --enable-libssp --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --with-float=hard --with-sysroot=/ --with-build-sysroot=/prj/oe/omap/build-beaglebone-master/tmp/sysroots/beaglebone --with-native-system-header-dir=/prj/oe/omap/build-beaglebone-master/tmp/sysroots/beaglebone/usr/include --with-gxx-include-dir=/usr/include/c++/4.9.1 --enable-nls Thread model: posix gcc version 4.9.1 (GCC) Yocto builds libssp libstdc++-v3 libgomp libatomic separately from gcc for packaging/cross-compile/other reasons that aren't entirely clear to me, so I suspect the issue arises there. But one difference is that I'm using -std=c++1y (and sometimes -std=c++11). Would that be enough to be an ABI change? I haven't encountered issues on x86-64.
