Anyone knows how to debug this?

Making all in build/mingw32_nt-5.1-1.0.10_0.46_3_2_-i686 make[2]: Entering directory `/home/Nilsson/Pike/7.7/build/mingw32_nt-5.1-1.0.10_0.46_3_2_-i686' Expect 1 shift/reduce conflict. cd /home/Nilsson/Pike/7.7/src && bison -y -d -v language.yacc conflicts: 1 shift/reduce make[2]: *** [/home/Nilsson/Pike/7.7/src/language.h_src] Error 141 make[2]: Leaving directory `/home/Nilsson/Pike/7.7/build/mingw32_nt-5.1-1.0.10_0.46_3_2_-i686' make[1]: *** [_make_in_builddir] Error 2 make[1]: Leaving directory `/home/Nilsson/Pike/7.7' make: *** [compile] Error 2