* src/ltlvisit/Makefile.am (lib_LTLIBRARIES): Rename as ...

(noinst_LTLIBRARIES): ... this.
* src/ltlenv/Makefile.am, src/ltlast/Makefile.am,
src/ltlparse/Makefile.am: Likewise.
* src/Makefile.am (lib_LTLIBRARIES, libspot_la_SOURCES,
libspot_la_LIBADD): New variable.   Build a libspot.la library
from all the sub-libraries.

src/.cvsignore

@@ -1,3 +1,5 @@
 .deps
 Makefile
 Makefile.in
+.libs
+libspot.la

src/Makefile.am

@@ -2,3 +2,11 @@ AUTOMAKE_OPTIONS = subdir-objects
 
 # List directories in the order they must be built.
 SUBDIRS = misc ltlenv ltlast ltlvisit ltlparse ltltest 
+
+lib_LTLIBRARIES = libspot.la
+libspot_la_SOURCES =
+libspot_la_LIBADD =  \
+  ltlenv/libltlenv.la \
+  ltlparse/libltlparse.la \
+  ltlvisit/libltlvisit.la \
+  ltlast/libltlast.la

src/ltlast/Makefile.am

@@ -1,7 +1,7 @@
 AM_CPPFLAGS = -I$(srcdir)/..
 AM_CXXFLAGS = $(WARNING_CXXFLAGS)
 
-lib_LTLIBRARIES = libltlast.la
+noinst_LTLIBRARIES = libltlast.la
 libltlast_la_SOURCES = \
   allnodes.hh \
   atomic_prop.cc \

src/ltlenv/Makefile.am

@@ -1,7 +1,7 @@
 AM_CPPFLAGS = -I$(srcdir)/..
 AM_CXXFLAGS = $(WARNING_CXXFLAGS)
 
-lib_LTLIBRARIES = libltlenv.la
+noinst_LTLIBRARIES = libltlenv.la
 libltlenv_la_SOURCES = \
   defaultenv.cc \
   defaultenv.hh \

src/ltlparse/Makefile.am

@@ -1,7 +1,7 @@
 AM_CPPFLAGS = -I$(srcdir)/..
 AM_CXXFLAGS = $(WARNING_CXXFLAGS)
 
-lib_LTLIBRARIES = libltlparse.la
+noinst_LTLIBRARIES = libltlparse.la
 
 LTLPARSE_YY = ltlparse.yy
 FROM_LTLPARSE_YY_MAIN = ltlparse.cc

src/ltlvisit/Makefile.am

@@ -1,7 +1,7 @@
 AM_CPPFLAGS = -I$(srcdir)/..
 AM_CXXFLAGS = $(WARNING_CXXFLAGS)
 
-lib_LTLIBRARIES = libltlvisit.la
+noinst_LTLIBRARIES = libltlvisit.la
 libltlvisit_la_SOURCES = \
   clone.cc \
   clone.hh \