unable to install from git pull

[mistergibson]

To reproduce:

gem install ./rwx-0.0.1.1.dev.gem
Building native extensions. This could take a while...
ERROR: Error installing ./rwx-0.0.1.1.dev.gem:
ERROR: Failed to build gem native extension.

/usr/bin/ruby2.0 extconf.rb

checking for HAVE_RB_DATA_TYPE_T_PARENT... yes
*** 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=/usr/bin/ruby2.0
--with-rwx-dir
--without-rwx-dir
--with-rwx-include
--without-rwx-include=${rwx-dir}/include
--with-rwx-lib
--without-rwx-lib=${rwx-dir}/
/usr/lib/ruby/2.0.0/mkmf.rb:1710:in pkg_config': wrong number of arguments (2 for 1) (ArgumentError) from extconf.rb:25:in

'

Gem files will remain installed in /var/lib/gems/2.0.0/gems/rwx-0.0.1.1.dev for inspection.
Results logged to /var/lib/gems/2.0.0/gems/rwx-0.0.1.1.dev/ext/gem_make.out

Note that I have the wxWidgets 3.0 headers and lib installed (Linux system)

[Hanmac]

Yeah the Gem was not updated a long time ago.
Please try to build it from trunk.

But I think the main Problem is the ruby version. Try to use a newer one like 2.1.

[mistergibson]

2.1 is not available yet in my distro -- how do I build the gem from trunk?

[mbrethes]

I have made some modifications that enabled me to compile this on Debian Bullseye! Check the pull request here.