config.h should not be distributed or installed

somewhere, because it is generated locally during
the build process.

src/include/ngspice/Makefile.am

@@ -1,9 +1,10 @@
 ## Process this file with automake to produce Makefile.in
 
-nodist_pkginclude_HEADERS = \
-	config.h
+nodist_include_HEADERS = \
+	config.h	\
+	config.h.in
 
-pkginclude_HEADERS = \
+noinst_HEADERS = \
 	tclspice.h	\
 	acdefs.h	\
 	bdrydefs.h	\
@@ -129,4 +130,9 @@ pkginclude_HEADERS = \
 	wincolornames.h	\
 	wstdio.h
 
+if SHARED_MODULE
+pkginclude_HEADERS = \
+	sharedspice.h
+endif SHARED_MODULE
+
 MAINTAINERCLEANFILES = Makefile.in