In Makefile.in, have ncat_build depend on nbase_build and nsock_build to

avoid a race condition. "make all" would make nsock and ncat, and ncat
would in turn make nsock. If the timing was right, the two simultaneous
builds would trample each other.

It may seem inefficient to have all these recursive makes calling down
the dependency tree all the time, but GNU Make at least remembers which
targets were already completed so for example only one descent into
nbase_build will be done per "make all".

CHANGELOG

@@ -786,9 +786,9 @@ o Fix a bug in the NSE http library which would cause some scripts to
   Files\Nmap\nselib/http.lua:77: attempt to call field 'parse' (a nil
   value) [Jah]
 
-o Fixed a Makefile problem (race condition) which could lead to build
-  failures when launching make in parallel mode (e.g. -j4). [Michal
-  Januszewski]
+o Fixed a couple of Makefile problems (race condition) which could
+  lead to build failures when launching make in parallel mode (e.g.
+  -j4). [Michal Januszewski, Chris Clements]
 
 o Added new addrow() function to NSE tab library.  It allows
   developers to add a whole row at once rather than doing a separate

Makefile.in

@@ -112,7 +112,7 @@ nsock_build: $(NSOCKDIR)/src/Makefile nbase_build
 	@echo Compiling libnsock;
 	cd $(NSOCKDIR)/src && $(MAKE)
 
-ncat_build: $(NCATDIR)/Makefile
+ncat_build: $(NCATDIR)/Makefile nbase_build nsock_build
 	cd $(NCATDIR) && $(MAKE)
 
 lua_build: $(LIBLUADIR)/Makefile