1 files changed, 42 insertions, 68 deletions
diff --git a/ext/openbabel/extconf.rb b/ext/openbabel/extconf.rb
index aa90d76..7f2bf8b 100644
--- a/ext/openbabel/extconf.rb
+++ b/ext/openbabel/extconf.rb
@@ -1,83 +1,57 @@
 require 'fileutils'
-require 'mkmf'
 require 'rbconfig'
-$:.unshift File.expand_path('../../../lib', __FILE__)
-require 'openbabel/version'
+require 'mkmf'
+
+main_dir = File.expand_path(File.join(File.dirname(__FILE__),"..",".."))
 
-ob_num_ver = OpenBabel::VERSION
-ob_ver     = "openbabel-"+ob_num_ver
+# install OpenBabel
 
-RUBY=File.join(RbConfig::CONFIG['bindir'], RbConfig::CONFIG['ruby_install_name'])
+openbabel_version = "2.3.2"
 
-main_dir = File.expand_path(File.join(File.dirname(__FILE__),"..",".."))
-src_dir = File.join main_dir, ob_ver
-build_dir = File.join main_dir, "build"
-install_dir = main_dir 
+openbabel_dir = File.join main_dir, "openbabel"
+src_dir = openbabel_dir 
+build_dir = File.join src_dir, "build"
+install_dir = openbabel_dir 
 install_lib_dir = File.join install_dir, "lib"
-lib_dir = File.join main_dir, "lib", "openbabel"
+lib_dir = File.join openbabel_dir, "lib", "openbabel"
 ruby_src_dir = File.join src_dir, "scripts", "ruby"
 
 begin
-  nr_processors = `grep processor /proc/cpuinfo | wc -l` # speed up compilation, Linux only
+  nr_processors = `getconf _NPROCESSORS_ONLN`.to_i # should be POSIX compatible
 rescue
   nr_processors = 1
 end
 
-begin
-  Dir.chdir main_dir do
-    FileUtils.rm_rf src_dir
-    puts "Downloading OpenBabel sources"
-    system "curl -L -d use_mirror=netcologne 'http://downloads.sourceforge.net/project/openbabel/openbabel/#{ob_num_ver}/openbabel-#{ob_num_ver}.tar.gz' | tar xz"
-    system "sed -i -e 's/-Wl,-flat_namespace//;s/-flat_namespace//' #{File.join ruby_src_dir, "extconf.rb"}" # remove unrecognized compiler option
-    system "sed -i -e 's/Init_OpenBabel/Init_openbabel/g' #{File.join ruby_src_dir,"*cpp"}" # fix swig bindings
-    system "sed  -i -e 's/Config::CONFIG/RbConfig::CONFIG/' #{File.join src_dir, "scripts", "CMakeLists.txt" }" # fix Ruby Config
-    system "sed  -i -e 's/Config::CONFIG/RbConfig::CONFIG/' #{File.join ruby_src_dir, "extconf.rb" }" # fix Ruby Config
-  end
-  FileUtils.mkdir_p build_dir
-  FileUtils.mkdir_p install_dir
-  Dir.chdir build_dir do
-    puts "Configuring OpenBabel"
-    cmake = "cmake #{src_dir} -DCMAKE_INSTALL_PREFIX=#{install_dir} -DBUILD_GUI=OFF -DENABLE_TESTS=OFF -DRUBY_BINDINGS=ON"
-    # set rpath for local installations
-    # http://www.cmake.org/Wiki/CMake_RPATH_handling
-    # http://vtk.1045678.n5.nabble.com/How-to-force-cmake-not-to-remove-install-rpath-td5721193.html
-    cmake += " -DCMAKE_INSTALL_RPATH:STRING=\"#{install_lib_dir}\"" unless have_library('openbabel')
-    system cmake
-  end
-  unless have_library('openbabel')
-    # local installation in gem directory
-    Dir.chdir build_dir do
-      puts "OpenBabel not installed. Compiling sources."
-      system "make -j#{nr_processors}"
-      system "make install"
-      ENV["PKG_CONFIG_PATH"] = File.dirname(File.expand_path(Dir["#{install_dir}/**/openbabel*pc"].first))
-    end
-  end
-  # compile ruby bindings
-  puts "Compiling and installing OpenBabel Ruby bindings."
-  Dir.chdir ruby_src_dir do
-    # fix rpath
-    system "sed -i 's|with_ldflags.*$|with_ldflags(\"#\$LDFLAGS -dynamic -Wl,-rpath,#{install_lib_dir}\") do|' #{File.join(ruby_src_dir,'extconf.rb')}" unless have_library('openbabel')
-    # get include and lib from pkg-config
-    ob_include=`pkg-config openbabel-2.0 --cflags-only-I`.sub(/\s+/,'').sub(/-I/,'')
-    ob_lib=`pkg-config openbabel-2.0 --libs-only-L`.sub(/\s+/,'').sub(/-L/,'')
-    system "#{RUBY} extconf.rb --with-openbabel-include=#{ob_include} --with-openbabel-lib=#{ob_lib}"
-    system "make -j#{nr_processors}"
-  end
-  FileUtils.cp(ruby_src_dir+"/openbabel.#{RbConfig::CONFIG["DLEXT"]}", "./")
-	File.open('Makefile', 'w') do |makefile|
-		makefile.write <<"EOF"
-.PHONY: openbabel.#{RbConfig::CONFIG["DLEXT"]}
-openbabel.#{RbConfig::CONFIG["DLEXT"]}:
-	chmod 755 openbabel.#{RbConfig::CONFIG["DLEXT"]}
+FileUtils.mkdir_p openbabel_dir
+Dir.chdir main_dir do
+  FileUtils.rm_rf src_dir
+  puts "Downloading OpenBabel sources"
+  system "git clone https://github.com/openbabel/openbabel.git"
+end
+
+FileUtils.mkdir_p build_dir
+FileUtils.mkdir_p install_dir
+Dir.chdir build_dir do
+  puts "Configuring OpenBabel"
+  cmake = "cmake #{src_dir} -DCMAKE_INSTALL_PREFIX=#{install_dir} -DBUILD_GUI=OFF -DENABLE_TESTS=OFF -DRUN_SWIG=ON -DRUBY_BINDINGS=ON"
+  # set rpath for local installations
+  # http://www.cmake.org/Wiki/CMake_RPATH_handling
+  # http://vtk.1045678.n5.nabble.com/How-to-force-cmake-not-to-remove-install-rpath-td5721193.html
+  cmake += " -DCMAKE_INSTALL_RPATH:STRING=\"#{install_lib_dir}\"" 
+  system cmake
+end
 
-.PHONY: install
-install:
-	mkdir -p #{lib_dir}
-	mv openbabel.#{RbConfig::CONFIG["DLEXT"]} #{lib_dir}
-EOF
-  FileUtils.remove_entry_secure src_dir, build_dir
-	end
-ensure
-  # Do NOT remove scr_dir and build_dir after build fails, they are necessary for debugging.
+# local installation in gem directory
+Dir.chdir build_dir do
+  puts "Compiling OpenBabel sources."
+  system "make -j#{nr_processors}"
+  system "make install"
+  ENV["PKG_CONFIG_PATH"] = File.dirname(File.expand_path(Dir["#{install_dir}/**/openbabel*pc"].first))
 end
+
+# create a fake Makefile
+File.open(File.join(File.dirname(__FILE__),"Makefile"),"w+") do |makefile|
+  makefile.puts "all:\n\ttrue\n\ninstall:\n\ttrue\n"
+end
+
+$makefile_created = true