我是编写 makefile 的新手。现在我尝试使用 pjsip c-library,它安装在我的主目录中。我剪了一点并尝试编译它。有一些错误,所以我寻找解决方案,所以我发现我必须将该库包含到搜索路径中。此外,可以在 makefile 中声明它们,所以我尝试了第二个解决方案。
这是我的 makefile:
pjpath=home/pi/pjproject-2.4.5
LIB=-L/$(pjpath)/pjlib/lib -L/$(pjpath)/pjlib-util/lib -L/$(pjpath)/pjnath/lib -L/$(pjpath)/pjmedia/lib -L/$(pjpath)/pjsip/lib
INC=-I/$(pjpath)/pjlib/include -I/$(pjpath)/pjlib-util/include -I/$(pjpath)/pjnath/include -I/$(pjpath)/pjmedia/include -I/$(pjpath)/pjsip/include
all:
gcc -o test $(INC) simple_pjsua.c $(LIB) -lpj -lpjlib -lpjnath -lpjmedia -lpjmedia-audiodev -lpjmedia-codec -lpjmedia-videodev -lpjsdp -lpjsip -lpjsip-simple -lpjsip-ua -lpjsua -lpjsua2
clean:
rm simple_pjsua.o test
这是我的 c 文件 simple_pjsua.c:
#define PJ_IS_LITTLE_ENDIAN 1 #define PJ_IS_BIG_ENDIAN 0 #include <pjsua-lib/pjsua.h> #define THIS_FILE "App" #define SIP_USER "demo-user2" #define SIP_DOMAIN "sip:192.168.2.59" #define SIP_PASSWD "123456" static void on_incoming_call(pjsua_acc_id acc_id, pjsua_call_id call_id, pjsip_rx_data *rdata); static void on_call_state(pjsua_call_id call_id, pjsip_event *e); static void on_call_media_state(pjsua_call_id call_id); static void error_exit(const char *title, pj_status_t status); int main(int argc, char *argv[]){ printf("Hello World"); return 0; } static void on_incoming_call(pjsua_acc_id acc_id, pjsua_call_id call_id, pjsip_rx_data *rdata){ pjsua_call_info ci; PJ_UNUSED_ARG(acc_id); PJ_UNUSED_ARG(rdata); pjsua_call_get_info(call_id, &ci); PJ_LOG(3,(THIS_FILE, "Incoming call from %.*s!!", (int) ci.remote_info.slen, ci.remote_info.ptr)); /* Automatically answer incoming calls with 200/OK */ pjsua_call_answer(call_id, 200, NULL, NULL); } static void on_call_state(pjsua_call_id call_id, pjsip_event *e){ pjsua_call_info ci; PJ_UNUSED_ARG(e); pjsua_call_get_info(call_id, &ci); PJ_LOG(3,(THIS_FILE, "Call %d state=%.*s", call_id, (int) ci.state_text.slen, ci.state_text.ptr)); } static void on_call_media_state(pjsua_call_id call_id){ pjsua_call_info ci; pjsua_call_get_info(call_id, &ci); if (ci.media_status == PJSUA_CALL_MEDIA_ACTIVE) { pjsua_conf_connect(ci.conf_slot, 0); pjsua_conf_connect(0, ci.conf_slot); } } static void error_exit(const char *title, pj_status_t status){ pjsua_perror(THIS_FILE, title, status); pjsua_destroy(); exit(1); }
这是我的 makefile 输出:
gcc -o test -I/home/pi/pjproject-2.4.5/pjlib/include -I/home/pi/pjproject-2.4.5/pjlib-util/include -I/home/pi/pjproject-2.4.5/pjnath/include -I/home/pi/pjproject-2.4.5/pjmedia/include -I/home/pi/pjproject-2.4.5/pjsip/include simple_pjsua.c -L/home/pi/pjproject-2.4.5/pjlib/lib -L/home/pi/pjproject-2.4.5/pjlib-util/lib -L/home/pi/pjproject-2.4.5/pjnath/lib -L/home/pi/pjproject-2.4.5/pjmedia/lib -L/home/pi/pjproject-2.4.5/pjsip/lib -lpj -lpjlib -lpjnath -lpjmedia -lpjmedia-audiodev -lpjmedia-codec -lpjmedia-videodev -lpjsdp -lpjsip -lpjsip-simple -lpjsip-ua -lpjsua -lpjsua2
In file included from /home/pi/pjproject-2.4.5/pjlib/include/pj/config.h:288:0,
from /home/pi/pjproject-2.4.5/pjlib/include/pj/types.h:33,
from /home/pi/pjproject-2.4.5/pjsip/include/pjsip/sip_config.h:27,
from /home/pi/pjproject-2.4.5/pjsip/include/pjsip/sip_types.h:34,
from /home/pi/pjproject-2.4.5/pjsip/include/pjsip.h:24,
from /home/pi/pjproject-2.4.5/pjsip/include/pjsua-lib/pjsua.h:30,
from simple_pjsua.c:3:
/home/pi/pjproject-2.4.5/pjlib/include/pj/config_site.h:3:35: warning: extra tokens at end of #include directive [enabled by default]
/usr/bin/ld: cannot find -lpj
/usr/bin/ld: cannot find -lpjlib
/usr/bin/ld: cannot find -lpjnath
/usr/bin/ld: cannot find -lpjmedia
/usr/bin/ld: cannot find -lpjmedia-audiodev
/usr/bin/ld: cannot find -lpjmedia-codec
/usr/bin/ld: cannot find -lpjmedia-videodev
/usr/bin/ld: cannot find -lpjsdp
/usr/bin/ld: cannot find -lpjsip
/usr/bin/ld: cannot find -lpjsip-simple
/usr/bin/ld: cannot find -lpjsip-ua
/usr/bin/ld: cannot find -lpjsua
/usr/bin/ld: cannot find -lpjsua2
collect2: ld returned 1 exit status
makefile:6: recipe for target 'all' failed
make: *** [all] Error 1
我还发现了一个有用的 site ,它解释了它是如何完成的,尽管我还无法弄清楚。
最佳答案
首先,第一个警告来自库代码,你的代码没有罪。
然后,始终在所有源文件或目标文件之后指定链接库。默认情况下,GNU 链接器不会记住尚未引用的库中的符号,因此如果 somelib
还没有,它只会删除所有 -lsomelib
已被先前的对象或库引用。
所以,我敢打赌,这条线
gcc -o test $(INC) simple_pjsua.c $(LIB)
会对您有所帮助(或者至少可以解决此特定错误)。
关于c - 包括PJSIP-Library并编写makefile,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33808791/