如何使用GCC（在Windows上）正确包含libcurl？

Question

I'm getting a linker error whenever I #include in my program. I have downloaded libcurl from haxx.se, compiled libcurl.dll, and added -Icurl to my GCC options when compiling (as well as tried adding a direct path using -L to the dll). However, I still get the following errors:

undefined reference to `_imp__curl_easy_init'
undefined reference to `_imp__curl_easy_setopt'
undefined reference to `_imp__curl_easy_setopt'
undefined reference to `_imp__curl_easy_perform'
undefined reference to `_imp__curl_easy_strerror'
undefined reference to `_imp__curl_easy_cleanup'

My compile command includes this:

-Icurl -L"F:/GCCnew/lib/libcurl.dll"

What am I doing wrong? I suspect it's something simple but I can't work it out and searching hasn't given me a solution that doesn't use something like Code::blocks.

Answer 1

My compile command includes this:

-Icurl -L"F:/GCCnew/lib/libcurl.dll"

If you use mingw gcc, then:

• First, -L must have a folder name, not a library name.
• Second, there must be '-l' option. For example -lcurl.
• Third, -Icurl is irrelevant to your linker error

So the command to build might look like:

gcc your-file.c -o executable_name -L"F:/GCCnew/lib" -lcurl

Useful links:

• http://www.mingw.org/wiki/sampleDLL (Building a client executable)
• http://www.mingw.org/wiki/Specify_the_libraries_for_the_linker_to_use
• http://www.mingw.org/wiki/LibraryPathHOWTO