error compiling noip dynamicDNS software

[anarchrazy]

this is what i get

$ ls
binaries COPYING debian.noip2.sh Makefile noip2.c README.FIRST redhat.noip.sh
$ make
gcc -Wall -g -O2 -Dlinux -DPREFIX=\"/usr/local\" noip2.c -o noip2
noip2.c:421: warning: type qualifiers ignored on function return type
noip2.c: In function ‘main’:
noip2.c:548: warning: function return types not compatible due to ‘volatile’
noip2.c: At top level:
noip2.c:729: warning: function definition has qualified void return type
noip2.c: In function ‘display_one_config’:
noip2.c:1145: warning: pointer targets in passing argument 1 of ‘bdecode’ differ in signedness
noip2.c:1145: warning: pointer targets in passing argument 2 of ‘bdecode’ differ in signedness
noip2.c:1180: warning: pointer targets in passing argument 1 of ‘bdecode’ differ in signedness
noip2.c:1180: warning: pointer targets in passing argument 2 of ‘bdecode’ differ in signedness
noip2.c: In function ‘parse_config’:
noip2.c:1339: warning: pointer targets in passing argument 1 of ‘chksum’ differ in signedness
noip2.c:1340: warning: pointer targets in passing argument 1 of ‘chksum’ differ in signedness
noip2.c:1342: warning: pointer targets in passing argument 1 of ‘chksum’ differ in signedness
noip2.c: In function ‘dynamic_update’:
noip2.c:1416: warning: pointer targets in passing argument 1 of ‘bdecode’ differ in signedness
noip2.c:1416: warning: pointer targets in passing argument 2 of ‘bdecode’ differ in signedness
noip2.c:1421: warning: pointer targets in passing argument 1 of ‘bencode’ differ in signedness
noip2.c:1421: warning: pointer targets in passing argument 2 of ‘bencode’ differ in signedness
noip2.c:1472: warning: pointer targets in passing argument 1 of ‘bdecode’ differ in signedness
noip2.c:1472: warning: pointer targets in passing argument 2 of ‘bdecode’ differ in signedness
noip2.c: In function ‘url_encode’:
noip2.c:1909: warning: pointer targets in passing argument 1 of ‘sprintf’ differ in signedness
noip2.c:1915: warning: pointer targets in passing argument 1 of ‘sprintf’ differ in signedness
noip2.c: In function ‘get_credentials’:
noip2.c:1931: warning: pointer targets in passing argument 1 of ‘url_encode’ differ in signedness
noip2.c:1931: warning: pointer targets in passing argument 2 of ‘url_encode’ differ in signedness
noip2.c:1932: warning: pointer targets in passing argument 1 of ‘url_encode’ differ in signedness
noip2.c:1932: warning: pointer targets in passing argument 2 of ‘url_encode’ differ in signedness
noip2.c:1938: warning: pointer targets in passing argument 1 of ‘url_encode’ differ in signedness
noip2.c:1938: warning: pointer targets in passing argument 2 of ‘url_encode’ differ in signedness
noip2.c:1969: warning: pointer targets in passing argument 1 of ‘url_encode’ differ in signedness
noip2.c:1969: warning: pointer targets in passing argument 2 of ‘url_encode’ differ in signedness
noip2.c: In function ‘get_all_device_names’:
noip2.c:2078: warning: pointer targets in assignment differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 1 of ‘strlen’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 1 of ‘strlen’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 2 of ‘__builtin_strcmp’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 2 of ‘__builtin_strcmp’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 1 of ‘strlen’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 2 of ‘__builtin_strcmp’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 2 of ‘__builtin_strcmp’ differ in signedness
noip2.c:2079: warning: pointer targets in passing argument 2 of ‘strncmp’ differ in signedness
noip2.c:2081: warning: pointer targets in passing argument 1 of ‘__builtin_strchr’ differ in signedness
noip2.c: In function ‘get_device_name’:
noip2.c:2110: warning: pointer targets in passing argument 2 of ‘strcpy’ differ in signedness
noip2.c:2122: warning: pointer targets in passing argument 2 of ‘strcpy’ differ in signedness
noip2.c: In function ‘autoconf’:
noip2.c:2198: warning: pointer targets in passing argument 1 of ‘bencode’ differ in signedness
noip2.c:2198: warning: pointer targets in passing argument 2 of ‘bencode’ differ in signedness
noip2.c:2235: warning: pointer targets in passing argument 1 of ‘bencode’ differ in signedness
noip2.c:2235: warning: pointer targets in passing argument 2 of ‘bencode’ differ in signedness
noip2.c:2254: warning: pointer targets in passing argument 1 of ‘bencode’ differ in signedness
noip2.c:2254: warning: pointer targets in passing argument 2 of ‘bencode’ differ in signedness
noip2.c:2262: warning: pointer targets in passing argument 1 of ‘bencode’ differ in signedness
noip2.c:2262: warning: pointer targets in passing argument 2 of ‘bencode’ differ in signedness
noip2.c:2270: warning: pointer targets in passing argument 1 of ‘chksum’ differ in signedness
noip2.c:2271: warning: pointer targets in passing argument 1 of ‘chksum’ differ in signedness
noip2.c:2272: warning: pointer targets in passing argument 1 of ‘chksum’ differ in signedness
noip2.c: In function ‘bencode’:
noip2.c:2294: warning: pointer targets in passing argument 1 of ‘strlen’ differ in signedness
noip2.c: In function ‘bdecode’:
noip2.c:2333: warning: pointer targets in passing argument 1 of ‘strlen’ differ in signedness

[Cabhan]

Everything that you posted is a warning, not an error, meaning that the compilation shouldn't be halted. If there is an error being encountered, post those lines (they should be at the end of the output).

Also, have you read the README file to see if you have met all dependency requirements?