These libraries aren't meant to be installed.  Not without headers, at least.

--- shadow-4.0.3/libmisc/Makefile.am	2002-11-21 23:19:50.000000000 -0500
+++ shadow-4.0.3/libmisc/Makefile.am	2002-11-21 23:19:45.000000000 -0500
@@ -5,7 +5,7 @@
 
 INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/lib
 
-lib_LTLIBRARIES = libmisc.la
+noinst_LTLIBRARIES = libmisc.la
 
 libmisc_la_SOURCES = \
 	addgrps.c \
--- shadow-4.0.3/lib/Makefile.am	2002-11-21 23:19:37.000000000 -0500
+++ shadow-4.0.3/lib/Makefile.am	2002-11-21 23:19:32.000000000 -0500
@@ -4,7 +4,7 @@
 DEFS = 
 INCLUDES = -I$(top_srcdir)
 
-lib_LTLIBRARIES = libshadow.la
+noinst_LTLIBRARIES = libshadow.la
 
 libshadow_la_LDFLAGS = -version-info 0:0:0
 libshadow_la_LIBADD = $(INTLLIBS) $(LIBCRYPT) $(LIBTCFS) $(LIBSKEY) $(LIBMD) \