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# frozen_string_literal: true
require 'rbconfig/sizeof'
require 'test/unit'
require 'fiddle'
# FIXME: this is stolen from DL and needs to be refactored.
libc_so = libm_so = nil
case RUBY_PLATFORM
when /cygwin/
libc_so = "cygwin1.dll"
libm_so = "cygwin1.dll"
when /android/
libdir = '/system/lib'
if [0].pack('L!').size == 8
libdir = '/system/lib64'
end
libc_so = File.join(libdir, "libc.so")
libm_so = File.join(libdir, "libm.so")
when /linux-musl/
Dir.glob('/lib/ld-musl-*.so.1') do |ld|
libc_so = libm_so = ld
end
when /linux/
libdir = '/lib'
case RbConfig::SIZEOF['void*']
when 4
# 32-bit ruby
case RUBY_PLATFORM
when /armv\w+-linux/
# In the ARM 32-bit libc package such as libc6:armhf libc6:armel,
# libc.so and libm.so are installed to /lib/arm-linux-gnu*.
# It's not installed to /lib32.
dir, = Dir.glob('/lib/arm-linux-gnu*')
libdir = dir if dir && File.directory?(dir)
else
libdir = '/lib32' if File.directory? '/lib32'
end
when 8
# 64-bit ruby
libdir = '/lib64' if File.directory? '/lib64'
end
# Handle musl libc
libc_so, = Dir.glob(File.join(libdir, "libc.musl*.so*"))
if libc_so
libm_so = libc_so
else
# glibc
case RUBY_PLATFORM
when /alpha-linux/, /ia64-linux/
libc_so = "libc.so.6.1"
libm_so = "libm.so.6.1"
else
libc_so = "libc.so.6"
libm_so = "libm.so.6"
end
end
when /mingw/, /mswin/
require "rbconfig"
crtname = RbConfig::CONFIG["RUBY_SO_NAME"][/msvc\w+/] || 'ucrtbase'
libc_so = libm_so = "#{crtname}.dll"
when /darwin/
libc_so = libm_so = "/usr/lib/libSystem.B.dylib"
# macOS 11.0+ removed libSystem.B.dylib from /usr/lib. But It works with dlopen.
rigid_path = true
when /kfreebsd/
libc_so = "/lib/libc.so.0.1"
libm_so = "/lib/libm.so.1"
when /gnu/ #GNU/Hurd
libc_so = "/lib/libc.so.0.3"
libm_so = "/lib/libm.so.6"
when /mirbsd/
libc_so = "/usr/lib/libc.so.41.10"
libm_so = "/usr/lib/libm.so.7.0"
when /freebsd/
libc_so = "/lib/libc.so.7"
libm_so = "/lib/libm.so.5"
when /bsd|dragonfly/
libc_so = "/usr/lib/libc.so"
libm_so = "/usr/lib/libm.so"
when /solaris/
libdir = '/lib'
case RbConfig::SIZEOF['void*']
when 4
# 32-bit ruby
libdir = '/lib' if File.directory? '/lib'
when 8
# 64-bit ruby
libdir = '/lib/64' if File.directory? '/lib/64'
end
libc_so = File.join(libdir, "libc.so")
libm_so = File.join(libdir, "libm.so")
when /aix/
pwd=Dir.pwd
libc_so = libm_so = "#{pwd}/libaixdltest.so"
unless File.exist? libc_so
cobjs=%w!strcpy.o!
mobjs=%w!floats.o sin.o!
funcs=%w!sin sinf strcpy strncpy!
expfile='dltest.exp'
require 'tmpdir'
Dir.mktmpdir do |_dir|
begin
Dir.chdir _dir
%x!/usr/bin/ar x /usr/lib/libc.a #{cobjs.join(' ')}!
%x!/usr/bin/ar x /usr/lib/libm.a #{mobjs.join(' ')}!
%x!echo "#{funcs.join("\n")}\n" > #{expfile}!
require 'rbconfig'
if RbConfig::CONFIG["GCC"] = 'yes'
lflag='-Wl,'
else
lflag=''
end
flags="#{lflag}-bE:#{expfile} #{lflag}-bnoentry -lm"
%x!#{RbConfig::CONFIG["LDSHARED"]} -o #{libc_so} #{(cobjs+mobjs).join(' ')} #{flags}!
ensure
Dir.chdir pwd
end
end
end
when /haiku/
libdir = '/system/lib'
case [0].pack('L!').size
when 4
# 32-bit ruby
libdir = '/system/lib/x86' if File.directory? '/system/lib/x86'
when 8
# 64-bit ruby
libdir = '/system/lib/' if File.directory? '/system/lib/'
end
libc_so = File.join(libdir, "libroot.so")
libm_so = File.join(libdir, "libroot.so")
else
libc_so = ARGV[0] if ARGV[0] && ARGV[0][0] == ?/
libm_so = ARGV[1] if ARGV[1] && ARGV[1][0] == ?/
if( !(libc_so && libm_so) )
$stderr.puts("libc and libm not found: #{$0} <libc> <libm>")
end
end
unless rigid_path
libc_so = nil if libc_so && libc_so[0] == ?/ && !File.file?(libc_so)
libm_so = nil if libm_so && libm_so[0] == ?/ && !File.file?(libm_so)
end
if !libc_so || !libm_so
ruby = EnvUtil.rubybin
# When the ruby binary is 32-bit and the host is 64-bit,
# `ldd ruby` outputs "not a dynamic executable" message.
# libc_so and libm_so are not set.
ldd = `ldd #{ruby}`
#puts ldd
libc_so = $& if !libc_so && %r{/\S*/libc\.so\S*} =~ ldd
libm_so = $& if !libm_so && %r{/\S*/libm\.so\S*} =~ ldd
#p [libc_so, libm_so]
end
Fiddle::LIBC_SO = libc_so
Fiddle::LIBM_SO = libm_so
module Fiddle
class TestCase < Test::Unit::TestCase
def setup
@libc = Fiddle.dlopen(LIBC_SO)
@libm = Fiddle.dlopen(LIBM_SO)
end
def teardown
if /linux/ =~ RUBY_PLATFORM
GC.start
end
end
def under_gc_stress
stress, GC.stress = GC.stress, true
yield
ensure
GC.stress = stress
end
end
end
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