问题
I am trying to install the curb gem, which is libcurl bindings for Ruby, and of course I need to have "A working (lib)curl installation, with development stuff" installed on my computer. So, I went to the cURL Download Wizard and downloaded this package.
But adding the bin into my PATH does not produce improvement and I still get an error when I try to install the curb gem, such as:
extconf.rb:19: Can't find libcurl or curl/curl.h (RuntimeError)
Even though, curl is already in the PATH.
EDIT: I also tried raking the gem, as per the instructions. It fails saying "make failed" and throwing a bunch of errors like this:
C:/Ruby/lib/ruby/gems/1.8/gems/curb-0.7.7.1/ext/curb_postfield.c:76: undefined reference to `_imp__curl_formadd'
回答1:
Execute Below command for windows only and its works
gem install curb --platform=mswin32
回答2:
I realise this is a very old question, but I had this exact problem today and found the instructions on someone else's site. These worked for me so I thought I would share them since people with this issue are most likely to come across StackOverflow first: http://jes.al/2012/10/installing-curb-gem-on-windows-7/
In a nutshell:
- Get the 32-bit development version of curl (see my notes below)
- Add the curl bin directory to your PATH
Run the following command (replacing the paths to curl as necessary)
gem install curb --platform=ruby -- -- --with-curl-lib="C:/curl-7.27.0-devel-mingw32/bin" --with-curl-include="C:/curl-7.27.0-devel-mingw32/include"
A couple of personal notes:
- Even though I am on 64-bit Windows 7, I had to download the 32-bit libcurl version under "Win32 - Generic", identified as "Win32 2000/XP zip".
- I got the error
c:/Ruby193/lib/ruby/1.9.1/mkmf.rb:246:in 'initialize': Permission denied - mkmftmp1.log (Errno::EACCES)while installing the gem. This rather messed up page here suggested that it might be a problem with my anti-virus, and that just retrying a couple of times might work, and indeed, it did.
来源：https://stackoverflow.com/questions/3146858/using-curb-gem-and-libcurl-on-windows