On Wednesday 03 of June 2009 21:13:23 Kushan Thakkar wrote: > I am trying to use curl with g++ compiler on mac. I am not an expert when I > comes to compliers, but I have done the following from the information I > have been able to find online: > > - installed CURL > - here is the output of information I received with curl-config utility > version: libcurl 7.16.3 > prefix: /usr > cflags: (NONE) > libs: -lcurl -lssl -lcrypto -lz > > when I compile my program from command line using # g++ -o App test.cpp > > I get the following error: > Undefined symbols: > "_curl_easy_perform", referenced from: > _main in ccr07sIp.o > "_curl_easy_setopt", referenced from: > _main in ccr07sIp.o > "_curl_easy_cleanup", referenced from: > _main in ccr07sIp.o > "_curl_easy_init", referenced from: > _main in ccr07sIp.o > ld: symbol(s) not found > collect2: ld returned 1 exit status > > I understand that this means that I need to link libraries (-lcurl -lssl > -lcrypto -lz) in order to take care of this error, however I was not able > to find any information on how to do so: > > this is what I have tried so far: > > 1) # g++ -L/usr/lib -lcurl -lssl -lcrypto -lz > > Error: > Undefined symbols: > "_main", referenced from: > start in crt1.10.5.o > ld: symbol(s) not found > collect2: ld returned 1 exit status > > 2) g++ -L/usr/lib -lcurl -lssl -lcrypto -lz main.o > > Error: > i686-apple-darwin9-g++-4.0.1: main.o: No such file or directory > > What should be my next step? > > Any help (including suggestions on other utilities that allows to get http > files from c++) will be greatly appreciated.
Try to put it together: g++ -o App test.cpp -L/usr/lib -lcurl -lssl -lcrypto -lz If you want it splitted in two steps: g++ -c -o main.o test.cpp g++ -L/usr/lib -lcurl -lssl -lcrypto -lz main.o The output should be then a.out or you can specify a meaningful name with -o here as well. Kamil
