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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") |