prepared lib makefile. skip building the library while compiler support is not there

libsrc/Makefile

@@ -21,6 +21,7 @@ CBMS = c128   \
 GEOS = geos-apple \
        geos-cbm
 
+# FIXME: c65 (and perhaps mega65?) should be moved up to CBMS maybe
 TARGETS = agat         \
           apple2       \
           apple2enh    \
@@ -30,6 +31,7 @@ TARGETS = agat         \
           atari5200    \
           atari7800    \
           atmos        \
+          c65          \
           creativision \
           $(CBMS)      \
           $(GEOS)      \
@@ -45,7 +47,8 @@ TARGETS = agat         \
           sim65c02     \
           supervision  \
           sym1         \
-          telestrat
+          telestrat    \
+          mega65
 
 TARGETTEST = none     \
              sim6502  \
@@ -193,6 +196,11 @@ ifeq ($(TARGET),$(filter $(TARGET),$(GEOS)))
   SRCDIRS += $(addprefix geos-common/,$(GEOSDIRS))
 endif
 
+ifeq ($(TARGET),c65)
+# FIXME: the compiler does not work for 4510 yet
+else ifeq ($(TARGET),mega65)
+# FIXME: the compiler does not work for 45GS02 yet
+else
 SRCDIRS += common   \
            conio    \
            dbg      \
@@ -203,6 +211,7 @@ SRCDIRS += common   \
            serial   \
            tgi      \
            zlib
+endif
 
 vpath %.s $(SRCDIRS)
 vpath %.c $(SRCDIRS)