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require 'fileutils'
require 'mkmf'
require 'rbconfig'
$:.unshift File.expand_path('../../../lib', __FILE__)
require 'openbabel/version'
ob_num_ver = OpenBabel::VERSION
ob_ver = "openbabel-"+ob_num_ver
RUBY=File.join(RbConfig::CONFIG['bindir'], RbConfig::CONFIG['ruby_install_name'])
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
install_lib_dir = File.join install_dir, "lib"
lib_dir = File.join main_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
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"]}
.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.
end
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