Rails Typhoeus Curl Trouble

Question

I\'m scratching my head on this error since similar errors refer to instances of compiling libcurl from source; however, I am just simply trying to get a former rails projec

Answer 1

sudo apt-get install libcurl4-openssl-dev worked for me.

Answer 2

I tried adding libcurl-devel 7.57.0-1 to msys2 (on Windows) but it didn't help. (pacman -Ss libcurl showed it as installed:

msys/libcurl 7.57.0-1 (libraries) [installed]
Multi-protocol file transfer library (runtime)
msys/libcurl-devel 7.57.0-1 (development) [installed]
Libcurl headers and libraries

So for anyone having the same problem on Windows, an easy way to get around the LoadError: Could not open library 'libcurl' is to:

• Take a libcurl.dll from one of the packages found here, https://curl.haxx.se/gknw.net/7.40.0/dist-w64/, and put it on the PATH.

  (I just put it under \ruby24\bin\)

Related questions about the same problem:

• jekyll serve dependency error - Could not open 'lib curl'

• Typhoeus Windows installation

• How to solve 'libcurl' not found with Rails on Windows

• how to install libcurl on windows 7 64bit

Answer 3

Is libcurl properly installed? Typhoeus has no native extensions but it requires libcurl dynamic library (.so) since it works with the FFI library:

# from lib/typhoeus/curl.rb
ffi_lib 'libcurl'

I would say that the development files (headers) are not needed so sudo apt-get install libcurl3 should do the trick (otherwise install the devel version w/ SSL support via sudo apt-get install libcurl4-openssl-dev).