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require "mkmf"
require "rubygems" unless defined?(Gem)
dir_config('fftw3','/usr/local')
require "rbconfig"
so = RbConfig::CONFIG["DLEXT"]
raise("Your gem is too old") unless Gem.respond_to?(:find_files)
env = ENV['NARRAY_TYPE']
if env == "NArray" || env == "narray"
na_type = "narray"
elsif env == "NumRu::NArray" || env == "numru-narray"
na_type = "numru-narray"
elsif !env.nil?
raise "Unsupported value for the environment variable NARRAY_TYPE: #{env}"
else
if Gem.find_files("narray.h").length > 0
na_type = "narray"
elsif Gem.find_files("numru/narray/narray.h").length > 0
na_type = "numru-narray"
end
end
case na_type
when "narray"
narray_include = File.expand_path(File.dirname(Gem.find_files("narray.h")[0]))
narray_lib = File.expand_path(File.dirname(Gem.find_files("narray." + so)[0]))
when "numru-narray"
narray_include = File.expand_path(File.dirname(Gem.find_files("numru/narray/narray.h")[0]))
narray_lib = File.expand_path(File.dirname(Gem.find_files("numru/narray/narray." + so)[0]))
end
dir_config('narray', narray_include, narray_lib)
if ( ! ( have_header("narray.h") && have_header("narray_config.h") ) ) then
print <<-EOS
** configure error **
Header narray.h or narray_config.h is not found. If you have these files in
/narraydir/include, try the following:
% ruby extconf.rb --with-narray-include=/narraydir/include
EOS
exit(-1)
end
if ( ! ( have_header("fftw3.h") && have_library("fftw3") ) ) then
print <<EOS
** configure error **
Header fftw3.h or the compiled fftw3 library is not found.
If you have the library installed under /fftw3dir (that is, fftw3.h is
in /fftw3dir/include and the library in /fftw3dir/lib/),
try the following:
% ruby extconf.rb --with-fftw3-dir=/fftw3dir
Alternatively, you can specify the two directory separately
with --with-fftw3-include and --with-fftw3-lib.
EOS
exit(-1)
end
if have_library("fftw3f")
$CFLAGS += ' -DFFTW3_HAS_SINGLE_SUPPORT'
end
create_makefile("numru/fftw3/fftw3")
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