NSPR header file and the library are needed to use PL_strcatn.

ldap/cm/newinstnt/Makefile

@@ -39,7 +39,7 @@ LIBS= \
 	kernel32.lib user32.lib gdi32.lib comdlg32.lib\
 	comctl32.lib advapi32.lib shell32.lib uuid.lib\
 	wsock32.lib\
-	$(SETUPSDKLINK) $(LDAP_SDK_LIBLDAP_DLL)
+	$(SETUPSDKLINK) $(LDAP_SDK_LIBLDAP_DLL) $(NSPRLINK)
 
 DSOBJS= \
 	$(OUTDIR)/dsinst_dsalib_dn.obj \

ldap/cm/newinstnt/dsinst.h

@@ -15,6 +15,7 @@
 
 #include <regparms.h>
 #include "libinst.h"
+#include "plstr.h"
 
 extern __declspec(dllexport) DSINST_ReadComponentInf(LPCSTR pszCacheFile, LPCSTR pszSection);
 extern __declspec(dllexport) INT  __cdecl DSINST_AskOptions(HWND hwndParent, INT nDirection);