Error installing iconv on windows by ruby2.0.0

Question

Error installing iconv on windows by ruby2.0.0
Error installing iconv on windows by ruby2.0.0

I try to install iconv, but when I run the following command:

gem install iconv 

my result:

 Temporarily enhancing Path to include DevKit... Building native extensions. This could take a while... Error : Error installing iconv: ERROR: Failed to build gem native extension. C:/Ruby/Ruby200/bin/ruby.exe -r ./siteconf20150217-3212-i8hzmh.rb extconf.rb checking for rb_enc_get() in ruby/encoding.h... yes checking for rb_sys_fail_str() in ruby.h... yes checking for iconv() in iconv.h... no checking for iconv() in -liconv... no *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=C:/Ruby/Ruby200/bin/ruby --with-iconv-dir --without-iconv-dir --with-iconv-include --without-iconv-include=${iconv-dir}/include --with-iconv-lib --without-iconv-lib=${iconv-dir}/ --enable-config-charset --disable-config-charset --with-config-charset --without-config-charset --with-iconvlib --without-iconvlib extconf failed, exit code 1 

Please help me!!!! thanks.

Answer 1

I had this problem tonight (Windows 7, Ruby 1.9.3). The solution in my case was as follows:

• Install "Complete package except sources" from http://gnuwin32.sourceforge.net/packages/libiconv.htm

• Run gem install iconv -v '1.0.4' -- --with-iconv-dir=/path/to/GnuWin32

If this does not work, I also first followed these instructions: http://donpepeto.com/2014/09/20/fixing-c-libraries-on-your-rubyrails-install-on-windows/ (Copying the contents of / bin, / include and / lib from installing GnuWin32). They did not work on their own, but as soon as I started the installation, I was able to install the gem, so maybe this helped. I also got a .gitignore error message, but I ignored this, ran gem install again ... and it worked.

Answer 2

I ran into the same issue on Windows 10. Thanks @Emma Burrows and @ZeWaren. They worked after me,

• Install libiconv; http://gnuwin32.sourceforge.net/packages/libiconv.htm
• Copy the files from /include and /lib to the /bin , for me C:\Program Files (x86)\GnuWin32\bin
• Set PATH (environment variable) to C:\Program Files (x86)\GnuWin32\bin
• Exceute (Tricky one): gem install iconv -- --with-iconv-dir="C:\Program Files (x86)\GnuWin32\" and during gem quickly install files from /bin to C:\RailsInstaller\Ruby2.2.0\lib\ruby\gems\2.2.0\gems\iconv-1.0.4\ext\iconv