curl - undefined reference to curl_global_init, curl_easy_init and other function(C) -

i trying use curl in c.

i visited curl official page, , copied sample source code.

below link: http://curl.haxx.se/libcurl/c/sepheaders.html

when run code command "gcc test.c",

the console shows message below.

/tmp/cc1vsivq.o: in function `main': test.c:(.text+0xe1): undefined reference `curl_global_init' test.c:(.text+0xe6): undefined reference `curl_easy_init' test.c:(.text+0x10c): undefined reference `curl_easy_setopt' test.c:(.text+0x12e): undefined reference `curl_easy_setopt' test.c:(.text+0x150): undefined reference `curl_easy_setopt' test.c:(.text+0x17e): undefined reference `curl_easy_cleanup' test.c:(.text+0x1b3): undefined reference `curl_easy_cleanup' test.c:(.text+0x1db): undefined reference `curl_easy_setopt' test.c:(.text+0x1e7): undefined reference `curl_easy_perform' test.c:(.text+0x1ff): undefined reference `curl_easy_cleanup' 

i not know how solve this.

you don't link library.

when using external library must link it:

$ gcc test.c -lcurl 

the last option tells gcc link (-l) library curl.