http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51432
--- Comment #5 from Tomohiro Kashiwada <kikairoya at gmail dot com> 2013-04-16 03:33:22 UTC --- no problem at gcc-4.7.3. it works fine. $ rx-elf-g++ -v Using built-in specs. COLLECT_GCC=rx-elf-g++ COLLECT_LTO_WRAPPER=/home/kikairoya/rx/libexec/gcc/rx-elf/4.7.3/lto-wrapper Target: rx-elf Configured with: /home/kikairoya/sources/gcc-4.7.3/configure --prefix=/home/kikairoya/rx --target=rx-elf --disable-nls --enable-target-optspace --with-newlib --enable-languages=c,c++ --without-ppl --enable-checking=release Thread model: single gcc version 4.7.3 (GCC) $ rx-elf-g++ -flto -std=c++0x -g -xc++ /dev/null -include functional /home/kikairoya/rx/lib/gcc/rx-elf/4.7.3/../../../../rx-elf/lib/crt0.o: In function `L0': /home/kikairoya/sources/newlib-1.20.0/libgloss/rx/crt0.S:77: undefined reference to `_main' /home/kikairoya/rx/lib/gcc/rx-elf/4.7.3/../../../../rx-elf/bin/ld: /home/kikairoya/rx/lib/gcc/rx-elf/4.7.3/../../../../rx-elf/lib/crt0.o(P): error: call to undefined function '_main' collect2: error: ld returned 1 exit status
