CMake/Tests/CMakeCommands/target_link_libraries/SubDirC/SubDirC.c

#ifndef DEF_SubDirC1
#  error "DEF_SubDirC1 not defined"
#endif
#ifndef DEF_SubDirC2
#  error "DEF_SubDirC2 not defined"
#endif

int SubDirC(void)
{
  return 0;
}