"UNP" UNIX Network Programming volume 1--> Environment (ubuntu14.04)

Learning UNP Network programming, tree examples exist #include "unp.h", it is necessary to configure the environment.

1. Download unpv13e to the resource page

2. Extract and move unpv13e to the appropriate folder

3. Compile

>$ CD unpv13e 
>~unpv13e/$./configure

>~unpv13e/$ cd lib
>~unpv13e/lib/$ make

>~ unpv13e/lib/$ CD ... /libfree
>~unpv13e/libfree/$ Make

If the following problems occur:

Gcc-i.. /lib-g-o2-d_reentrant-wall   -c-o inet_ntop.o inet_ntop.c inet_ntop.c:in
function ' inet_ntop ':
inet_ntop . C:60:9: error:argument ' size ' doesn ' t match prototype
  size_t size;
         ^ in
file included from inet_ntop.c:27:0:
/usr/include/arpa/inet.h:64:20:error:prototype declaration
 extern const char *inet_ntop (int __af, const void *__restrict __cp,
                    ^ make
: * * * [INET_NTOP.O] Error 1

You need to:

>~unpv13e/libfree/$ vim inet_ntop.c  //Change the size_t size of line 60th to socklen_t size;
>~unpv13e/libfree/$ make//change and make
>~unpv13e/libfree/$ CD again. /libgai
>~unpv13e/libgai/$ make   //below is just warning, slightly
/usr/include/arpa/inet.h:in function ' Inet_ntop ' :
inet_ntop.c:152:23:warning: ' Best.len ' May is used uninitialized in this function [-wmaybe-uninitialized]
   if ( Best.base = = 1 | | Cur.len > Best.len)
                       ^
inet_ntop.c:123:28:note: ' Best.len ' is declared here
  struct {int base, Len;} BES T, cur;
                            ^
Gcc-i. /lib-g-o2-d_reentrant-wall   -c-o inet_pton.o inet_pton.c
ar rv. /libunp.a in_cksum.o inet_ntop.o inet_pton.o
a-in_cksum.o a-inet_ntop.o-a-inet_pton.o ranlib
. /libunp.a

At this point, the compilation succeeded in generating a static library Libunp.a

4. Copy the generated libunp.a to the/usr/lib

>~unpv13e/libgai/$ CD ...
>~unpv13e/$ sudo cp libunp.a/usr/lib

5. Modify Unpv13e/lib/unp.h and copy

>~unpv13e/$ vim lib/unp.h  //Will #include ". /config.h "changed to #include" Config.h "
>~unpv13e/$  sudo cp lib/unp.h/usr/include
>~unpv13e/$ sudo cp Config.h/usr/include

6. Compiling examples

>~unpv13e/$  CD intro
>~unpv13e/$  gcc daytimetcpcli.c-o CLI-LUNP

The success of the compilation is accomplished.