Fix build of ivl with files in libmisc and vhdlpp check issues.

This patch fixes the ivl build to find files in libmisc using vpath instead
of a separate target. The existing constructs caused build problems after
running a make clean. It also adds an empty checking target to vhdlpp.

Makefile.in

@@ -55,6 +55,7 @@ endif
 # rebuild the lexor_keyword.cc file. If we do, then we want to use the
 # local version instead of the one is $(srcdir).
 vpath lexor_keyword.cc .
+vpath %.cc $(srcdir)/libmisc
 vpath %.cc $(srcdir)
 
 bindir = @bindir@
@@ -200,7 +201,7 @@ ifeq (@WIN32@,yes)
 # The first step makes an ivl.exe that dlltool can use to make an
 # export and import library, and the last link makes a, ivl.exe
 # that really exports the things that the import library imports.
-ivl@EXEEXT@: $O  $(srcdir)/ivl.def
+ivl@EXEEXT@: $O $(srcdir)/ivl.def
 	$(CXX) -o ivl@EXEEXT@ $O $(dllib) @EXTRALIBS@
 	dlltool --dllname ivl@EXEEXT@ --def $(srcdir)/ivl.def \
 		--output-lib libivl.a --output-exp ivl.exp
@@ -232,10 +233,6 @@ version.exe: $(srcdir)/version.c $(srcdir)/version_base.h version_tag.h
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep/$*.d
 
-%.o: $(srcdir)/libmisc/%.cc
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
-	mv $*.d dep/$*.d
-
 # Here are some explicit dependencies needed to get things going.
 main.o: main.cc version_tag.h
 

vhdlpp/Makefile.in

@@ -58,6 +58,8 @@ O = main.o compiler.o entity.o entity_elaborate.o \
 
 all: dep vhdlpp@EXEEXT@
 
+check: all
+
 clean:
 	rm -f *.o *~
 	rm -rf dep vhdlpp@EXEEXT@