[New Package] libeconf (#5241)

packages/libeconf.rb

+require 'package'
+
+class Libeconf < Package
+  description 'Enhanced config file parser, which merges config files placed in several locations into one.'
+  homepage 'https://github.com/openSUSE/libeconf'
+  version '0.3.8'
+  compatibility 'all'
+  source_url 'https://github.com/openSUSE/libeconf/archive/v0.3.8.tar.gz'
+  source_sha256 'e0c265f85eef2aca400d17b88f74891ce40ed88d959ebc29f529d26121f7e8e3'
+
+  def self.build
+    FileUtils.mkdir 'builddir'
+    Dir.chdir 'builddir' do
+      system "cmake -G 'Ninja' \
+              #{CREW_CMAKE_OPTIONS} .."
+      system "ninja"
+    end
+  end
+
+  def self.install
+    system "DESTDIR=#{CREW_DEST_DIR} ninja -C builddir install"
+  end
+
+  def self.check
+    system "ninja -C builddir check"
+  end
+end