Add explicit dependencies on generated header files.

These explicit dependencies are not normally needed (because they
are covered by automatic dependency generation) but when the "-jN"
flag is passed to gmake, they help gmake schedule parallel builds.
(cherry picked from commit 5479aaf721)

Makefile.in

@@ -197,10 +197,12 @@ version.exe: $(srcdir)/version.c $(srcdir)/version_base.h version_tag.h
 dep:
 	mkdir dep
 
-%.o: %.cc
+%.o: %.cc config.h
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep/$*.d
 
+# Here are some explicit dependencies needed to get things going.
+main.o: main.cc version_tag.h
 
 lexor.o: lexor.cc parse.h
 

libveriuser/Makefile.in

@@ -78,7 +78,7 @@ libveriuser.a: libveriuser.o
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c config.h
 	$(CC) $(CPPFLAGS) $(CFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep
 

tgt-vhdl/Makefile.in

@@ -45,7 +45,7 @@ all: dep vhdl.tgt vhdl.conf vhdl-s.conf
 dep:
 	mkdir dep
 
-%.o: %.cc
+%.o: %.cc vhdl_config.h
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep
 

tgt-vvp/Makefile.in

@@ -47,7 +47,7 @@ all: dep vvp.tgt vvp.conf vvp-s.conf
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c vvp_config.h
 	$(CC) $(CPPFLAGS) $(CFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep
 

vpi/Makefile.in

@@ -50,7 +50,7 @@ check: all
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c vpi_config.h
 	$(CC) $(CPPFLAGS) $(CFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep
 

vvp/Makefile.in

@@ -103,11 +103,11 @@ endif
 dep:
 	mkdir dep
 
-%.o: %.cc
+%.o: %.cc config.h
 	$(CXX) $(CPPFLAGS) $(MDIR1) $(MDIR2) $(CXXFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep/$*.d
 
-%.o: %.c
+%.o: %.c config.h
 	$(CC) $(CPPFLAGS) $(MDIR1) $(MDIR2) $(CFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep/$*.d