_dos_setvect was not available because the OS/2 target does not provide it, not because of C++ linking problems

Author: joncampbell123

cxx/8254.cpp

@@ -35,8 +35,6 @@
 
 #ifdef TARGET_WINDOWS
 /* no interrupts */
-#elif defined(__cplusplus)
-/* why are dos_getvect() and dos_setvect() not available in C++ mode? */
 #else
 # define HOOK_IRQ
 #endif

cxx/common.mak

@@ -36,7 +36,10 @@ TEST_EXE =    $(SUBDIR)$(HPS)test.$(EXEEXT)
 
 !ifdef TARGET_WINDOWS
 !else
+! ifdef TARGET_OS2
+! else
 8254_EXE =    $(SUBDIR)$(HPS)8254.$(EXEEXT)
+! endif
 !endif
 
 exe: $(TEST_EXE) $(8254_EXE) .symbolic