Permalink
Switch branches/tags
Nothing to show
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
102 lines (82 sloc) 2.99 KB
require "mkmf"
if RUBY_VERSION < '1.9'
raise NotImplementedError, "Sorry, you need at least Ruby 1.9!"
end
# Function derived from NArray's extconf.rb.
def create_conf_h(file) #:nodoc:
print "creating #{file}\n"
File.open(file, 'w') do |hfile|
header_guard = file.upcase.sub(/\s|\./, '_')
hfile.puts "#ifndef #{header_guard}"
hfile.puts "#define #{header_guard}"
hfile.puts
# FIXME: Find a better way to do this:
hfile.puts "#define RUBY_2 1" if RUBY_VERSION >= '2.0'
for line in $defs
line =~ /^-D(.*)/
hfile.printf "#define %s 1\n", $1
end
hfile.puts
hfile.puts "#endif"
end
end
def find_newer_gplusplus #:nodoc:
print "checking for apparent GNU g++ binary with C++0x/C++11 support... "
[9,8,7,6,5,4,3].each do |minor|
ver = "4.#{minor}"
gpp = "g++-#{ver}"
result = `which #{gpp}`
next if result.empty?
CONFIG['CXX'] = gpp
puts ver
return CONFIG['CXX']
end
false
end
def gplusplus_version
cxxvar = proc { |n| `#{CONFIG['CXX']} -E -dM - <#{File::NULL} | grep #{n}`.chomp.split(' ')[2] }
major = cxxvar.call('__GNUC__')
minor = cxxvar.call('__GNUC_MINOR__')
patch = cxxvar.call('__GNUC_PATCHLEVEL__')
raise("unable to determine g++ version (match to get version was nil)") if major.nil? || minor.nil? || patch.nil?
"#{major}.#{minor}.#{patch}"
end
if /cygwin|mingw/ =~ RUBY_PLATFORM
CONFIG["DLDFLAGS"] << " --output-lib libnmatrix.a"
end
# Fix compiler pairing
if CONFIG['CC'] == 'clang' && CONFIG['CXX'] != 'clang++'
puts "WARNING: CONFIG['CXX'] is not 'clang++' even though CONFIG['CC'] is 'clang'.",
"WARNING: Force to use clang++ together with clang."
CONFIG['CXX'] = 'clang++'
end
if CONFIG['CXX'] == 'clang++'
$CXX_STANDARD = 'c++11'
else
version = gplusplus_version
if version < '4.3.0' && CONFIG['CXX'] == 'g++' # see if we can find a newer G++, unless it's been overridden by user
if !find_newer_gplusplus
raise("You need a version of g++ which supports -std=c++0x or -std=c++11. If you're on a Mac and using Homebrew, we recommend using mac-brew-gcc.sh to install a more recent g++.")
end
version = gplusplus_version
end
if version < '4.7.0'
$CXX_STANDARD = 'c++0x'
else
$CXX_STANDARD = 'c++11'
end
puts "using C++ standard... #{$CXX_STANDARD}"
puts "g++ reports version... " + `#{CONFIG['CXX']} --version|head -n 1|cut -f 3 -d " "`
end
# For release, these next two should both be changed to -O3.
$CFLAGS += " -O3 "
#$CFLAGS += " -static -O0 -g "
$CXXFLAGS += " -O3 -std=#{$CXX_STANDARD} " #-fmax-errors=10 -save-temps
#$CXXFLAGS += " -static -O0 -g -std=#{$CXX_STANDARD} "
CONFIG['warnflags'].gsub!('-Wshorten-64-to-32', '') # doesn't work except in Mac-patched gcc (4.2)
CONFIG['warnflags'].gsub!('-Wdeclaration-after-statement', '')
CONFIG['warnflags'].gsub!('-Wimplicit-function-declaration', '')
have_func("rb_array_const_ptr", "ruby.h")
have_macro("FIX_CONST_VALUE_PTR", "ruby.h")
have_macro("RARRAY_CONST_PTR", "ruby.h")
have_macro("RARRAY_AREF", "ruby.h")