1. 下载源码，W. Richard Stevens的主页：http://www.kohala.com/start/
wget http://www.kohala.com/start/unpv22e/unpv22e.tar.gz -P /usr/local/src
2. 解压
tar xvf /usr/local/src/unpv22e.tar.gz -C /root/bin
3. 编译库文件
cd /root/bin/unpv22e/
./configure
编辑生成config.h文件，注释以下几行
vi config.h
56 // #define uint8_t unsigned char
57 // #define uint16_t unsigned short
58 // #define uint32_t unsigned int
添加MSG_R和MSG_W定义
vi config.h
66 // add by jcq
67 typedef unsigned long ulong_t;
68 #define MSG_R 0400
69 #define MSG_W 0200
添加_GNU_SOURCE定义
vi config.h
#define _GNU_SOURCE
修改warpunix.c中的MKtemp函数，使用mkstemp函数替换mktemp函数
cd lib
181 void
182 Mktemp(char *template)
183 {
184 if (mkstemp(template) == NULL || template[0] == 0)
185 err_quit("mktemp error");
186 }
编译生成libunpipc.a
cd lib
make
将生成的libunpipc.a复制到/usr/lib中。
[root@localhost myunp2]# vim ftok.c
[root@localhost myunp2]# gcc -o ftok ftok.c
/tmp/ccxRydhw.o: In function `main':
ftok.c:(.text+0x18): undefined reference to `err_quit'
ftok.c:(.text+0x30): undefined reference to `Stat'
ftok.c:(.text+0x48): undefined reference to `Ftok'
collect2: 错误：ld 返回
[root@localhost myunp2]# gcc -o ftok ftok.c -lunpipc
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_open':
wrapunix.c:(.text+0x4d8): undefined reference to `mq_open'
wrapunix.c:(.text+0x4f0): undefined reference to `mq_open'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_close':
wrapunix.c:(.text+0x52b): undefined reference to `mq_close'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_unlink':
wrapunix.c:(.text+0x55b): undefined reference to `mq_unlink'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_send':
wrapunix.c:(.text+0x5a3): undefined reference to `mq_send'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_receive':
wrapunix.c:(.text+0x5e3): undefined reference to `mq_receive'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_notify':
wrapunix.c:(.text+0x623): undefined reference to `mq_notify'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_getattr':
wrapunix.c:(.text+0x653): undefined reference to `mq_getattr'
/usr/lib/libunpipc.a(wrapunix.o): In function `Mq_setattr':
wrapunix.c:(.text+0x68b): undefined reference to `mq_setattr'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_open':
wrapunix.c:(.text+0x9c8): undefined reference to `sem_open'
wrapunix.c:(.text+0x9e0): undefined reference to `sem_open'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_close':
wrapunix.c:(.text+0xa1b): undefined reference to `sem_close'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_unlink':
wrapunix.c:(.text+0xa4b): undefined reference to `sem_unlink'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_init':
wrapunix.c:(.text+0xa8b): undefined reference to `sem_init'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_destroy':
wrapunix.c:(.text+0xabb): undefined reference to `sem_destroy'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_wait':
wrapunix.c:(.text+0xaeb): undefined reference to `sem_wait'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_trywait':
wrapunix.c:(.text+0xb1c): undefined reference to `sem_trywait'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_post':
wrapunix.c:(.text+0xb5b): undefined reference to `sem_post'
/usr/lib/libunpipc.a(wrapunix.o): In function `Sem_getvalue':
wrapunix.c:(.text+0xb93): undefined reference to `sem_getvalue'
/usr/lib/libunpipc.a(wrapunix.o): In function `Shm_open':
wrapunix.c:(.text+0xccc): undefined reference to `shm_open'
/usr/lib/libunpipc.a(wrapunix.o): In function `Shm_unlink':
wrapunix.c:(.text+0xd0b): undefined reference to `shm_unlink'
collect2: 错误：ld 返回
[root@localhost myunp2]# gcc -lrt -o ftok ftok.c -lunpipc
[root@localhost myunp2]# man mq_open
Cannot open the message catalog "man" for locale "zh_CN.UTF-8"
(NLSPATH="/usr/share/locale/%l/LC_MESSAGES/%N") Formatting page, please wait...
出现上面的错误，使用gcc 加选项-lrt解决。
错误：
[root@localhost myunp2]# gcc -lrt -o slot slot.c -lunpipc
slot.c: 在函数‘main’中:
slot.c::: 错误：‘IPC_PRIVATE’未声明(在此函数内第一次使用)
msqid=Msgget(IPC_PRIVATE,SVMSG_MODE|IPC_CREAT);
^
slot.c::: 附注：每个未声明的标识符在其出现的函数内只报告一次
In file included from slot.c:::
unpipc.h::: 错误：‘MSG_R’未声明(在此函数内第一次使用)
#define SVMSG_MODE (MSG_R | MSG_W | MSG_R>>3 | MSG_R>>6)
^
slot.c::: 附注：in expansion of macro ‘SVMSG_MODE’
msqid=Msgget(IPC_PRIVATE,SVMSG_MODE|IPC_CREAT);
^
unpipc.h::: 错误：‘MSG_W’未声明(在此函数内第一次使用)
#define SVMSG_MODE (MSG_R | MSG_W | MSG_R>>3 | MSG_R>>6)
^
slot.c::: 附注：in expansion of macro ‘SVMSG_MODE’
msqid=Msgget(IPC_PRIVATE,SVMSG_MODE|IPC_CREAT);
^
slot.c::: 错误：‘IPC_CREAT’未声明(在此函数内第一次使用)
msqid=Msgget(IPC_PRIVATE,SVMSG_MODE|IPC_CREAT);
^
slot.c::: 错误：‘IPC_RMID’未声明(在此函数内第一次使用)
Msgctl(msqid,IPC_RMID,NULL);
解决方法：
1.unpv22e里面的Make.defines
修改
#CFLAGS = -g -O2 -D_REENTRANT -Wall
CFLAGS = -g -O2 -D_GNU_SOURCE -D__USE_GNU -D_REENTRANT -Wall
2 将unpv22e中的unpipc.h拷贝到需要编译的代码的目录。
3 将config.h也拷贝到这个目录，由于unpipc.h依赖于这个头文件。