On Sat, 2021-11-27 at 16:27 +0800, chenglulu wrote: > +++ b/gcc/config/loongarch/loongarch-opts.h
/* snip */ > +#ifdef IN_LIBGCC2 > +#include "loongarch-def.h" > +#else > +extern "C" { > +#include "loongarch-def.h" > +} > + > +/* Handler for "-m" option combinations, > + shared by the driver and the compiler proper. */ > +void > +loongarch_config_target (struct loongarch_target *target, > + HOST_WIDE_INT opt_switches, > + int opt_arch, int opt_tune, int opt_fpu, > + int opt_abi_base, int opt_abi_ext, > + int opt_cmodel, int follow_multilib_list); > +#endif This is causing failures building libobjc (complaining that `extern "C"` can't be used in C code, and HOST_WIDE_INT is not defined). I think #ifdef IN_LIBGCC2 should be replaced with #if defined(IN_LIBGCC2) || defined(IN_TARGET_LIBS) -- Xi Ruoyao <xry...@mengyan1223.wang> School of Aerospace Science and Technology, Xidian University