1 files changed, 32 insertions, 0 deletions
diff --git a/ext/lazar/extconf.rb b/ext/lazar/extconf.rb
new file mode 100644
index 0000000..9997106
--- /dev/null
+++ b/ext/lazar/extconf.rb
@@ -0,0 +1,32 @@
+require 'fileutils'
+require 'rbconfig'
+require 'mkmf'
+
+main_dir = File.expand_path(File.join(File.dirname(__FILE__),"..",".."))
+
+# check for required programs
+programs = ["R","Rscript","mongod","java","getconf"]
+programs.each do |program|
+  abort "Please install #{program} on your system." unless find_executable program
+end
+
+abort "Please install Rserve on your system. Execute 'install.packages('Rserve')' in a R console running as root ('sudo R')."  unless `R CMD Rserve --version`.match(/^Rserve/)
+
+# install R packages
+r_dir = File.join main_dir, "R"
+FileUtils.mkdir_p r_dir
+#FileUtils.mkdir_p File.join(main_dir,"bin") # for Rserve binary
+rinstall = File.expand_path(File.join(File.dirname(__FILE__),"rinstall.R"))
+puts `Rscript --vanilla #{rinstall} #{r_dir}`
+
+r_libs = Dir[File.join(r_dir,"*")].collect{|l| l.sub(r_dir, '').sub('/','')}.sort
+["caret","doMC","foreach","ggplot2","gridExtra","iterators","pls"].each do |lib|
+  abort "Failed to install R package '#{lib}'." unless r_libs.include?(lib)
+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