[ruby-dev:47363] -Lprefix/lib

[ruby-dev:47363] -Lprefix/lib

[Tanaka Akira]

最近試しているクロスコンパイルな CI で、
思い立って DESTDIR を使って気がついたんですが、
configure に --prefix=/usr と指定すると、
/usr にあるライブラリを使ってしまうことがあるようです。

クロスコンパイルなので、ビルド環境の /usr は使ってほしくないんですが、
どうでしょうか。

実際に問題が出た環境は buildroot で作った i386 環境と、
Android (x86) の環境です。
ビルド環境 (x86_64) と中途半端に似ていると問題が起きやすいようです。

まず i386 は
http://www.rubyist.net/~akr/chkbuild/debian/crossruby-trunk-i386/log/20130522T080000Z.diff.html.gz
というように、curses のところで -ltermcap が見つからないというエラーになっています。

compiling curses.c
linking shared-object curses.so
/extdisk/chkbuild/buildroot/i386/buildroot-2013.02/output/host/usr/lib/gcc/i586-buildroot-linux-uclibc/4.6.3/../../../../i586-buildroot-linux-uclibc/bin/ld:
cannot find -ltermcap

ext/curses/mkmf.log をみると以下のように -ltermcap は見つかっています。
(改行を入れてあります)

have_library: checking for tgetent() in -ltermcap... -------------------- yes

"i586-buildroot-linux-uclibc-gcc -o conftest
 -I../../.ext/include/i586-linux-uclibc -I../.././include
 -I../.././ext/curses
 -O3 -fno-fast-math
 -ggdb3
 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long
 -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith
 -Wwrite-strings -Wdeclaration-after-statement
 -Wimplicit-function-declaration
 conftest.c
 -L.  -L../..  -L.
 -rdynamic -Wl,-export-dynamic -Wl,-R -Wl,/usr/lib -L/usr/lib
 -lruby-static -ltermcap  -lpthread -ldl -lcrypt -lm   -lc"
conftest.c: In function 't':
conftest.c:13:57: error: 'tgetent' undeclared (first use in this function)
conftest.c:13:57: note: each undeclared identifier is reported only
once for each function it appears in
conftest.c:13:32: warning: variable 'p' set but not used
[-Wunused-but-set-variable]
checked program was:
/* begin */
 1: #include "ruby.h"
 2:
 3: /*top*/
 4: extern int t(void);
 5: int main(int argc, char **argv)
 6: {
 7:   if (argc > 1000000) {
 8:     printf("%p", &t);
 9:   }
10:
11:   return 0;
12: }
13: int t(void) { void ((*volatile p)()); p = (void ((*)()))tgetent; return 0; }
/* end */

それに対し、make -n で実際のコマンドを調べて実行すると、リンクできません。

% i586-buildroot-linux-uclibc-gcc -shared \
-o ../../.ext/i586-linux-uclibc/curses.so curses.o \
-L. -L../.. -L.  -rdynamic -Wl,-export-dynamic \
-lncurses -ltermcap  -lpthread -ldl -lcrypt -lm   -lc
/extdisk/chkbuild/buildroot/i386/buildroot-2013.02/output/host/usr/lib/gcc/i586-buildroot-linux-uclibc/4.6.3/../../../../i586-buildroot-linux-uclibc/bin/ld:
cannot find -ltermcap
collect2: ld returned 1 exit status

比較すると、mkmf.log には -L/usr/lib があるので
試しに足してみるとリンクできますが、それはおそらく間違いでしょう。

また、Android (x86) では、
http://www.rubyist.net/~akr/chkbuild/debian/crossruby-trunk-x86android/log/20130522T093235Z.diff.html.gz
というように ruby のリンクのところで失敗しています。

linking ruby
/extdisk/chkbuild/android/x86/bin/../sysroot/usr/lib/crtbegin_dynamic.o(.text+0x19):
error: undefined reference to '__libc_init'
eval_error.c:8: error: undefined reference to '__stack_chk_guard'
file.c:1023: error: undefined reference to '__stack_chk_guard'
file.c:1066: error: undefined reference to '__stack_chk_guard'
以下略

make -n で調べると失敗するコマンドラインは以下のようになっています。

  i686-linux-android-gcc -O3 -fno-fast-math -ggdb3 \
    -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long \
    -Wno-missing-field-initializers -Wunused-variable -Werror=pointer-arith \
    -Werror=write-strings -Werror=declaration-after-statement \
    -Werror=implicit-function-declaration \
    -ansi -std=iso9899:199409 \
    -L. -fstack-protector -rdynamic -Wl,-export-dynamic \
    -fstack-protector -pie \
    main.o \
    -Wl,-R -Wl,/usr/lib -L/usr/lib \
    -lruby-static  -ldl -lm \
    -o ruby

この場合、-L/usr/lib を削るとリンクに成功します。

-Lprefix/lib というのは、少なくともクロスコンパイルでは間違いだと思うんですが、
どうですかねぇ。
-- 
[田中 哲][たなか あきら][Tanaka Akira]

[ruby-dev:47365] Re: -Lprefix/lib

[Nobuyoshi Nakada]

なかだです。

At Wed, 22 May 2013 19:54:26 +0900,
Tanaka Akira wrote in [ruby-dev:47363]:
> クロスコンパイルなので、ビルド環境の /usr は使ってほしくないんですが、
> どうでしょうか。

たしかに。

> 実際に問題が出た環境は buildroot で作った i386 環境と、
> Android (x86) の環境です。
> ビルド環境 (x86_64) と中途半端に似ていると問題が起きやすいようです。

そのrbconfig.rbを見せてもらえますか。

-- 
--- 僕の前にBugはない。
--- 僕の後ろにBugはできる。
    中田 伸悦

[ruby-dev:47367] Re: -Lprefix/lib

[Tanaka Akira]

[-- Attachment #1: Type: text/plain, Size: 846 bytes --]

2013年5月24日 10:39 Nobuyoshi Nakada <nobu@ruby-lang.org>:
>
>> 実際に問題が出た環境は buildroot で作った i386 環境と、
>> Android (x86) の環境です。
>> ビルド環境 (x86_64) と中途半端に似ていると問題が起きやすいようです。
>
> そのrbconfig.rbを見せてもらえますか。

添付します。以下のふたつです。

cross-uclibc-i386-rbconfig.rb
cross-android-x86_64-rbconfig.rb

これらは、boron の
/home/akr/chkbuild/tmp/build/crossruby-trunk-i386/20130523T201613Z/ruby
/home/akr/chkbuild/tmp/build/crossruby-trunk-x86android/20130523T215216Z/ruby
から取り出したものです。

boron に login すれば、他のファイルも覗けます。
(1日1回ビルドしていて、最新 2つしか残していませんが。)
-- 
[田中 哲][たなか あきら][Tanaka Akira]

[-- Attachment #2: cross-uclibc-i386-rbconfig.rb --]
[-- Type: application/octet-stream, Size: 10287 bytes --]


# This file was created by mkconfig.rb when ruby was built.  Any
# changes made to this file will be lost the next time ruby is built.

module RbConfig
  RUBY_VERSION == "2.1.0" or
    raise "ruby lib version (2.1.0) doesn't match executable version (#{RUBY_VERSION})"

  TOPDIR = File.dirname(__FILE__).chomp!("/lib/ruby/2.1.0/i586-linux-uclibc")
  DESTDIR = '' unless defined? DESTDIR
  CONFIG = {}
  CONFIG["DESTDIR"] = DESTDIR
  CONFIG["MAJOR"] = "2"
  CONFIG["MINOR"] = "1"
  CONFIG["TEENY"] = "0"
  CONFIG["PATCHLEVEL"] = "-1"
  CONFIG["INSTALL"] = '/usr/bin/install -c'
  CONFIG["EXEEXT"] = ""
  CONFIG["prefix"] = (TOPDIR || DESTDIR + "/usr")
  CONFIG["ruby_install_name"] = "ruby"
  CONFIG["RUBY_INSTALL_NAME"] = "ruby"
  CONFIG["RUBY_SO_NAME"] = "ruby"
  CONFIG["exec"] = "exec"
  CONFIG["ruby_pc"] = "ruby-2.1.pc"
  CONFIG["PACKAGE"] = "ruby"
  CONFIG["BUILTIN_TRANSSRCS"] = " newline.c"
  CONFIG["USE_RUBYGEMS"] = "YES"
  CONFIG["MANTYPE"] = "doc"
  CONFIG["NROFF"] = "/usr/bin/nroff"
  CONFIG["vendorarchhdrdir"] = "$(vendorhdrdir)/$(sitearch)"
  CONFIG["sitearchhdrdir"] = "$(sitehdrdir)/$(sitearch)"
  CONFIG["rubyarchhdrdir"] = "$(rubyhdrdir)/$(arch)"
  CONFIG["vendorhdrdir"] = "$(rubyhdrdir)/vendor_ruby"
  CONFIG["sitehdrdir"] = "$(rubyhdrdir)/site_ruby"
  CONFIG["rubyhdrdir"] = "$(includedir)/$(RUBY_VERSION_NAME)"
  CONFIG["RUBY_SEARCH_PATH"] = ""
  CONFIG["UNIVERSAL_INTS"] = ""
  CONFIG["UNIVERSAL_ARCHNAMES"] = ""
  CONFIG["configure_args"] = " '--prefix=/usr' '--build=i686-pc-linux-gnu' '--host=i586-buildroot-linux-uclibc' '--disable-install-doc' 'build_alias=i686-pc-linux-gnu' 'host_alias=i586-buildroot-linux-uclibc'"
  CONFIG["vendorarchdir"] = "$(vendorlibdir)/$(sitearch)"
  CONFIG["vendorlibdir"] = "$(vendordir)/$(ruby_version)"
  CONFIG["vendordir"] = "$(rubylibprefix)/vendor_ruby"
  CONFIG["sitearchdir"] = "$(sitelibdir)/$(sitearch)"
  CONFIG["sitelibdir"] = "$(sitedir)/$(ruby_version)"
  CONFIG["sitedir"] = "$(rubylibprefix)/site_ruby"
  CONFIG["rubyarchdir"] = "$(rubylibdir)/$(arch)"
  CONFIG["rubylibdir"] = "$(rubylibprefix)/$(ruby_version)"
  CONFIG["ruby_version"] = "2.1.0"
  CONFIG["sitearch"] = "$(arch)"
  CONFIG["arch"] = "i586-linux-uclibc"
  CONFIG["sitearchincludedir"] = "$(includedir)/$(sitearch)"
  CONFIG["archincludedir"] = "$(includedir)/$(arch)"
  CONFIG["sitearchlibdir"] = "$(libdir)/$(sitearch)"
  CONFIG["archlibdir"] = "$(libdir)/$(arch)"
  CONFIG["libdirname"] = "libdir"
  CONFIG["RUBY_EXEC_PREFIX"] = "/usr"
  CONFIG["RUBY_LIB_VERSION"] = ""
  CONFIG["RUBY_LIB_VERSION_STYLE"] = "3\t/* full */"
  CONFIG["RI_BASE_NAME"] = "ri"
  CONFIG["ridir"] = "$(datarootdir)/$(RI_BASE_NAME)"
  CONFIG["rubysitearchprefix"] = "$(rubylibprefix)/$(sitearch)"
  CONFIG["rubyarchprefix"] = "$(rubylibprefix)/$(arch)"
  CONFIG["rubylibprefix"] = "$(libdir)/$(RUBY_BASE_NAME)"
  CONFIG["MAKEFILES"] = "Makefile GNUmakefile"
  CONFIG["PLATFORM_DIR"] = ""
  CONFIG["THREAD_MODEL"] = "pthread"
  CONFIG["SYMBOL_PREFIX"] = ""
  CONFIG["EXPORT_PREFIX"] = ""
  CONFIG["COMMON_HEADERS"] = ""
  CONFIG["COMMON_MACROS"] = ""
  CONFIG["COMMON_LIBS"] = ""
  CONFIG["MAINLIBS"] = ""
  CONFIG["ENABLE_SHARED"] = "no"
  CONFIG["DLDLIBS"] = " -lc"
  CONFIG["SOLIBS"] = ""
  CONFIG["LIBRUBYARG_SHARED"] = "-Wl,-R -Wl,$(libdir) -L$(libdir) "
  CONFIG["LIBRUBYARG_STATIC"] = "-Wl,-R -Wl,$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)-static"
  CONFIG["LIBRUBYARG"] = "$(LIBRUBYARG_STATIC)"
  CONFIG["LIBRUBY"] = "$(LIBRUBY_A)"
  CONFIG["LIBRUBY_ALIASES"] = "lib$(RUBY_SO_NAME).so"
  CONFIG["LIBRUBY_SO"] = "lib$(RUBY_SO_NAME).so.$(MAJOR).$(MINOR).$(TEENY)"
  CONFIG["LIBRUBY_A"] = "lib$(RUBY_SO_NAME)-static.a"
  CONFIG["RUBYW_INSTALL_NAME"] = ""
  CONFIG["rubyw_install_name"] = ""
  CONFIG["EXTDLDFLAGS"] = ""
  CONFIG["EXTLDFLAGS"] = ""
  CONFIG["strict_warnflags"] = "-ansi -std=iso9899:199409"
  CONFIG["warnflags"] = "-Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Werror=pointer-arith -Werror=write-strings -Werror=declaration-after-statement -Werror=implicit-function-declaration"
  CONFIG["debugflags"] = "-ggdb3"
  CONFIG["optflags"] = "-O3 -fno-fast-math"
  CONFIG["cxxflags"] = " $(optflags) $(debugflags) $(warnflags)"
  CONFIG["cflags"] = " $(optflags) $(debugflags) $(warnflags)"
  CONFIG["cppflags"] = ""
  CONFIG["NULLCMD"] = ":"
  CONFIG["DLNOBJ"] = "dln.o"
  CONFIG["INSTALLDOC"] = "nodoc"
  CONFIG["CAPITARGET"] = "nodoc"
  CONFIG["RDOCTARGET"] = "nodoc"
  CONFIG["DTRACE_GLOMMED_OBJ"] = ""
  CONFIG["DTRACE_OBJ"] = ""
  CONFIG["DTRACE_EXT"] = "dmyh"
  CONFIG["EXECUTABLE_EXTS"] = ""
  CONFIG["ARCHFILE"] = ""
  CONFIG["LIBRUBY_RELATIVE"] = "no"
  CONFIG["EXTOUT"] = ".ext"
  CONFIG["PREP"] = "$(arch)-fake.rb"
  CONFIG["BTESTRUBY"] = "$(MINIRUBY)"
  CONFIG["CROSS_COMPILING"] = "yes"
  CONFIG["TEST_RUNNABLE"] = "no"
  CONFIG["setup"] = "Setup"
  CONFIG["EXTSTATIC"] = ""
  CONFIG["STRIP"] = "i586-buildroot-linux-uclibc-strip -S -x"
  CONFIG["TRY_LINK"] = ""
  CONFIG["LIBPATHENV"] = "LD_LIBRARY_PATH"
  CONFIG["RPATHFLAG"] = " -Wl,-R%1$-s"
  CONFIG["LIBPATHFLAG"] = " -L%1$-s"
  CONFIG["LINK_SO"] = ""
  CONFIG["LIBEXT"] = "a"
  CONFIG["DLEXT2"] = ""
  CONFIG["DLEXT"] = "so"
  CONFIG["LDSHAREDXX"] = "$(CXX) -shared"
  CONFIG["LDSHARED"] = "$(CC) -shared"
  CONFIG["CCDLFLAGS"] = "-fPIC"
  CONFIG["STATIC"] = ""
  CONFIG["ARCH_FLAG"] = ""
  CONFIG["DLDFLAGS"] = ""
  CONFIG["ALLOCA"] = ""
  CONFIG["codesign"] = ""
  CONFIG["POSTLINK"] = ":"
  CONFIG["WERRORFLAG"] = "-Werror"
  CONFIG["CHDIR"] = "cd -P"
  CONFIG["RMALL"] = "rm -fr"
  CONFIG["RMDIRS"] = "rmdir --ignore-fail-on-non-empty -p"
  CONFIG["RMDIR"] = "rmdir --ignore-fail-on-non-empty"
  CONFIG["CP"] = "cp"
  CONFIG["RM"] = "rm -f"
  CONFIG["PKG_CONFIG"] = ""
  CONFIG["PYTHON"] = ""
  CONFIG["DOXYGEN"] = "doxygen"
  CONFIG["DOT"] = "dot"
  CONFIG["DTRACE"] = ""
  CONFIG["MAKEDIRS"] = "/bin/mkdir -p"
  CONFIG["MKDIR_P"] = "/bin/mkdir -p"
  CONFIG["INSTALL_DATA"] = "$(INSTALL) -m 644"
  CONFIG["INSTALL_SCRIPT"] = "$(INSTALL)"
  CONFIG["INSTALL_PROGRAM"] = "$(INSTALL)"
  CONFIG["SET_MAKE"] = ""
  CONFIG["LN_S"] = "ln -s"
  CONFIG["NM"] = "i586-buildroot-linux-uclibc-nm"
  CONFIG["DLLWRAP"] = ""
  CONFIG["WINDRES"] = ""
  CONFIG["OBJCOPY"] = ":"
  CONFIG["OBJDUMP"] = "i586-buildroot-linux-uclibc-objdump"
  CONFIG["ASFLAGS"] = ""
  CONFIG["AS"] = "i586-buildroot-linux-uclibc-as"
  CONFIG["AR"] = "i586-buildroot-linux-uclibc-ar"
  CONFIG["RANLIB"] = "i586-buildroot-linux-uclibc-ranlib"
  CONFIG["try_header"] = ""
  CONFIG["CC_VERSION"] = "$(CC) -v"
  CONFIG["COUTFLAG"] = "-o "
  CONFIG["OUTFLAG"] = "-o "
  CONFIG["CPPOUTFILE"] = "-o conftest.i"
  CONFIG["GNU_LD"] = "yes"
  CONFIG["LD"] = "i586-buildroot-linux-uclibc-ld"
  CONFIG["GCC"] = "yes"
  CONFIG["EGREP"] = "/bin/grep -E"
  CONFIG["GREP"] = "/bin/grep"
  CONFIG["CPP"] = "$(CC) -E"
  CONFIG["CXXFLAGS"] = "$(cxxflags)"
  CONFIG["CXX"] = "g++"
  CONFIG["OBJEXT"] = "o"
  CONFIG["CPPFLAGS"] = " $(DEFS) $(cppflags)"
  CONFIG["LDFLAGS"] = "-L.  -rdynamic -Wl,-export-dynamic"
  CONFIG["CFLAGS"] = "$(cflags)"
  CONFIG["CC"] = "i586-buildroot-linux-uclibc-gcc"
  CONFIG["NACL_SDK_VARIANT"] = ""
  CONFIG["NACL_SDK_ROOT"] = ""
  CONFIG["NACL_TOOLCHAIN"] = ""
  CONFIG["target_os"] = "linux-uclibc"
  CONFIG["target_vendor"] = "buildroot"
  CONFIG["target_cpu"] = "i586"
  CONFIG["target"] = "i586-buildroot-linux-uclibc"
  CONFIG["host_os"] = "linux-uclibc"
  CONFIG["host_vendor"] = "buildroot"
  CONFIG["host_cpu"] = "i586"
  CONFIG["host"] = "i586-buildroot-linux-uclibc"
  CONFIG["RUBY_VERSION_NAME"] = "$(RUBY_BASE_NAME)-$(ruby_version)"
  CONFIG["RUBYW_BASE_NAME"] = "rubyw"
  CONFIG["RUBY_BASE_NAME"] = "ruby"
  CONFIG["build_os"] = "linux-gnu"
  CONFIG["build_vendor"] = "pc"
  CONFIG["build_cpu"] = "i686"
  CONFIG["build"] = "i686-pc-linux-gnu"
  CONFIG["RUBY_RELEASE_DATE"] = "2013-05-24"
  CONFIG["RUBY_PROGRAM_VERSION"] = "2.1.0"
  CONFIG["target_alias"] = ""
  CONFIG["host_alias"] = "i586-buildroot-linux-uclibc"
  CONFIG["build_alias"] = "i686-pc-linux-gnu"
  CONFIG["LIBS"] = "-lpthread -ldl -lcrypt -lm "
  CONFIG["ECHO_T"] = ""
  CONFIG["ECHO_N"] = "-n"
  CONFIG["ECHO_C"] = ""
  CONFIG["DEFS"] = ""
  CONFIG["mandir"] = "$(datarootdir)/man"
  CONFIG["localedir"] = "$(datarootdir)/locale"
  CONFIG["libdir"] = "$(exec_prefix)/lib"
  CONFIG["psdir"] = "$(docdir)"
  CONFIG["pdfdir"] = "$(docdir)"
  CONFIG["dvidir"] = "$(docdir)"
  CONFIG["htmldir"] = "$(docdir)"
  CONFIG["infodir"] = "$(datarootdir)/info"
  CONFIG["docdir"] = "$(datarootdir)/doc/$(PACKAGE)"
  CONFIG["oldincludedir"] = "/usr/include"
  CONFIG["includedir"] = "$(prefix)/include"
  CONFIG["localstatedir"] = "$(prefix)/var"
  CONFIG["sharedstatedir"] = "$(prefix)/com"
  CONFIG["sysconfdir"] = "$(prefix)/etc"
  CONFIG["datadir"] = "$(datarootdir)"
  CONFIG["datarootdir"] = "$(prefix)/share"
  CONFIG["libexecdir"] = "$(exec_prefix)/libexec"
  CONFIG["sbindir"] = "$(exec_prefix)/sbin"
  CONFIG["bindir"] = "$(exec_prefix)/bin"
  CONFIG["exec_prefix"] = "$(prefix)"
  CONFIG["PACKAGE_URL"] = ""
  CONFIG["PACKAGE_BUGREPORT"] = ""
  CONFIG["PACKAGE_STRING"] = ""
  CONFIG["PACKAGE_VERSION"] = ""
  CONFIG["PACKAGE_TARNAME"] = ""
  CONFIG["PACKAGE_NAME"] = ""
  CONFIG["PATH_SEPARATOR"] = ":"
  CONFIG["SHELL"] = "/bin/sh"
  CONFIG["archdir"] = "$(rubyarchdir)"
  CONFIG["topdir"] = File.dirname(__FILE__)
  MAKEFILE_CONFIG = {}
  CONFIG.each{|k,v| MAKEFILE_CONFIG[k] = v.dup}
  def RbConfig::expand(val, config = CONFIG)
    newval = val.gsub(/\$\$|\$\(([^()]+)\)|\$\{([^{}]+)\}/) {
      var = $&
      if !(v = $1 || $2)
	'$'
      elsif key = config[v = v[/\A[^:]+(?=(?::(.*?)=(.*))?\z)/]]
	pat, sub = $1, $2
	config[v] = false
	config[v] = RbConfig::expand(key, config)
	key = key.gsub(/#{Regexp.quote(pat)}(?=\s|\z)/n) {sub} if pat
	key
      else
	var
      end
    }
    val.replace(newval) unless newval == val
    val
  end
  CONFIG.each_value do |val|
    RbConfig::expand(val)
  end

  # returns the absolute pathname of the ruby command.
  def RbConfig.ruby
    File.join(
      RbConfig::CONFIG["bindir"],
      RbConfig::CONFIG["ruby_install_name"] + RbConfig::CONFIG["EXEEXT"]
    )
  end
end
autoload :Config, "rbconfig/obsolete.rb" # compatibility for ruby-1.8.4 and older.
CROSS_COMPILING = nil unless defined? CROSS_COMPILING

[-- Attachment #3: cross-android-x86_64-rbconfig.rb --]
[-- Type: application/octet-stream, Size: 10183 bytes --]


# This file was created by mkconfig.rb when ruby was built.  Any
# changes made to this file will be lost the next time ruby is built.

module RbConfig
  RUBY_VERSION == "2.1.0" or
    raise "ruby lib version (2.1.0) doesn't match executable version (#{RUBY_VERSION})"

  TOPDIR = File.dirname(__FILE__).chomp!("/lib/ruby/2.1.0/i686-linux-android")
  DESTDIR = '' unless defined? DESTDIR
  CONFIG = {}
  CONFIG["DESTDIR"] = DESTDIR
  CONFIG["MAJOR"] = "2"
  CONFIG["MINOR"] = "1"
  CONFIG["TEENY"] = "0"
  CONFIG["PATCHLEVEL"] = "-1"
  CONFIG["INSTALL"] = '/usr/bin/install -c'
  CONFIG["EXEEXT"] = ""
  CONFIG["prefix"] = (TOPDIR || DESTDIR + "/usr")
  CONFIG["ruby_install_name"] = "ruby"
  CONFIG["RUBY_INSTALL_NAME"] = "ruby"
  CONFIG["RUBY_SO_NAME"] = "ruby"
  CONFIG["exec"] = "exec"
  CONFIG["ruby_pc"] = "ruby-2.1.pc"
  CONFIG["PACKAGE"] = "ruby"
  CONFIG["BUILTIN_TRANSSRCS"] = " newline.c"
  CONFIG["USE_RUBYGEMS"] = "YES"
  CONFIG["MANTYPE"] = "doc"
  CONFIG["NROFF"] = "/usr/bin/nroff"
  CONFIG["vendorarchhdrdir"] = "$(vendorhdrdir)/$(sitearch)"
  CONFIG["sitearchhdrdir"] = "$(sitehdrdir)/$(sitearch)"
  CONFIG["rubyarchhdrdir"] = "$(rubyhdrdir)/$(arch)"
  CONFIG["vendorhdrdir"] = "$(rubyhdrdir)/vendor_ruby"
  CONFIG["sitehdrdir"] = "$(rubyhdrdir)/site_ruby"
  CONFIG["rubyhdrdir"] = "$(includedir)/$(RUBY_VERSION_NAME)"
  CONFIG["RUBY_SEARCH_PATH"] = ""
  CONFIG["UNIVERSAL_INTS"] = ""
  CONFIG["UNIVERSAL_ARCHNAMES"] = ""
  CONFIG["configure_args"] = " '--prefix=/usr' '--build=i686-pc-linux-gnu' '--host=i686-linux-android' '--disable-install-doc' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-linux-android'"
  CONFIG["vendorarchdir"] = "$(vendorlibdir)/$(sitearch)"
  CONFIG["vendorlibdir"] = "$(vendordir)/$(ruby_version)"
  CONFIG["vendordir"] = "$(rubylibprefix)/vendor_ruby"
  CONFIG["sitearchdir"] = "$(sitelibdir)/$(sitearch)"
  CONFIG["sitelibdir"] = "$(sitedir)/$(ruby_version)"
  CONFIG["sitedir"] = "$(rubylibprefix)/site_ruby"
  CONFIG["rubyarchdir"] = "$(rubylibdir)/$(arch)"
  CONFIG["rubylibdir"] = "$(rubylibprefix)/$(ruby_version)"
  CONFIG["ruby_version"] = "2.1.0"
  CONFIG["sitearch"] = "$(arch)"
  CONFIG["arch"] = "i686-linux-android"
  CONFIG["sitearchincludedir"] = "$(includedir)/$(sitearch)"
  CONFIG["archincludedir"] = "$(includedir)/$(arch)"
  CONFIG["sitearchlibdir"] = "$(libdir)/$(sitearch)"
  CONFIG["archlibdir"] = "$(libdir)/$(arch)"
  CONFIG["libdirname"] = "libdir"
  CONFIG["RUBY_EXEC_PREFIX"] = "/usr"
  CONFIG["RUBY_LIB_VERSION"] = ""
  CONFIG["RUBY_LIB_VERSION_STYLE"] = "3\t/* full */"
  CONFIG["RI_BASE_NAME"] = "ri"
  CONFIG["ridir"] = "$(datarootdir)/$(RI_BASE_NAME)"
  CONFIG["rubysitearchprefix"] = "$(rubylibprefix)/$(sitearch)"
  CONFIG["rubyarchprefix"] = "$(rubylibprefix)/$(arch)"
  CONFIG["rubylibprefix"] = "$(libdir)/$(RUBY_BASE_NAME)"
  CONFIG["MAKEFILES"] = "Makefile GNUmakefile"
  CONFIG["PLATFORM_DIR"] = ""
  CONFIG["THREAD_MODEL"] = "pthread"
  CONFIG["SYMBOL_PREFIX"] = ""
  CONFIG["EXPORT_PREFIX"] = ""
  CONFIG["COMMON_HEADERS"] = ""
  CONFIG["COMMON_MACROS"] = ""
  CONFIG["COMMON_LIBS"] = ""
  CONFIG["MAINLIBS"] = ""
  CONFIG["ENABLE_SHARED"] = "no"
  CONFIG["DLDLIBS"] = " -lc"
  CONFIG["SOLIBS"] = ""
  CONFIG["LIBRUBYARG_SHARED"] = "-Wl,-R -Wl,$(libdir) -L$(libdir) "
  CONFIG["LIBRUBYARG_STATIC"] = "-Wl,-R -Wl,$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)-static"
  CONFIG["LIBRUBYARG"] = "$(LIBRUBYARG_STATIC)"
  CONFIG["LIBRUBY"] = "$(LIBRUBY_A)"
  CONFIG["LIBRUBY_ALIASES"] = "lib$(RUBY_SO_NAME).so"
  CONFIG["LIBRUBY_SO"] = "lib$(RUBY_SO_NAME).so.$(MAJOR).$(MINOR).$(TEENY)"
  CONFIG["LIBRUBY_A"] = "lib$(RUBY_SO_NAME)-static.a"
  CONFIG["RUBYW_INSTALL_NAME"] = ""
  CONFIG["rubyw_install_name"] = ""
  CONFIG["EXTDLDFLAGS"] = ""
  CONFIG["EXTLDFLAGS"] = ""
  CONFIG["strict_warnflags"] = "-ansi -std=iso9899:199409"
  CONFIG["warnflags"] = "-Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Werror=pointer-arith -Werror=write-strings -Werror=declaration-after-statement -Werror=implicit-function-declaration"
  CONFIG["debugflags"] = "-ggdb3"
  CONFIG["optflags"] = "-O3 -fno-fast-math"
  CONFIG["cxxflags"] = " $(optflags) $(debugflags) $(warnflags)"
  CONFIG["cflags"] = " $(optflags) $(debugflags) $(warnflags)"
  CONFIG["cppflags"] = ""
  CONFIG["NULLCMD"] = ":"
  CONFIG["DLNOBJ"] = "dln.o"
  CONFIG["INSTALLDOC"] = "nodoc"
  CONFIG["CAPITARGET"] = "nodoc"
  CONFIG["RDOCTARGET"] = "nodoc"
  CONFIG["DTRACE_GLOMMED_OBJ"] = ""
  CONFIG["DTRACE_OBJ"] = ""
  CONFIG["DTRACE_EXT"] = "dmyh"
  CONFIG["EXECUTABLE_EXTS"] = ""
  CONFIG["ARCHFILE"] = ""
  CONFIG["LIBRUBY_RELATIVE"] = "no"
  CONFIG["EXTOUT"] = ".ext"
  CONFIG["PREP"] = "$(arch)-fake.rb"
  CONFIG["BTESTRUBY"] = "$(MINIRUBY)"
  CONFIG["CROSS_COMPILING"] = "yes"
  CONFIG["TEST_RUNNABLE"] = "no"
  CONFIG["setup"] = "Setup"
  CONFIG["EXTSTATIC"] = ""
  CONFIG["STRIP"] = "i686-linux-android-strip -S -x"
  CONFIG["TRY_LINK"] = ""
  CONFIG["LIBPATHENV"] = "LD_LIBRARY_PATH"
  CONFIG["RPATHFLAG"] = " -Wl,-R%1$-s"
  CONFIG["LIBPATHFLAG"] = " -L%1$-s"
  CONFIG["LINK_SO"] = ""
  CONFIG["LIBEXT"] = "a"
  CONFIG["DLEXT2"] = ""
  CONFIG["DLEXT"] = "so"
  CONFIG["LDSHAREDXX"] = "$(CXX) -shared"
  CONFIG["LDSHARED"] = "$(CC) -shared"
  CONFIG["CCDLFLAGS"] = "-fPIC"
  CONFIG["STATIC"] = ""
  CONFIG["ARCH_FLAG"] = ""
  CONFIG["DLDFLAGS"] = ""
  CONFIG["ALLOCA"] = ""
  CONFIG["codesign"] = ""
  CONFIG["POSTLINK"] = ":"
  CONFIG["WERRORFLAG"] = "-Werror"
  CONFIG["CHDIR"] = "cd -P"
  CONFIG["RMALL"] = "rm -fr"
  CONFIG["RMDIRS"] = "rmdir --ignore-fail-on-non-empty -p"
  CONFIG["RMDIR"] = "rmdir --ignore-fail-on-non-empty"
  CONFIG["CP"] = "cp"
  CONFIG["RM"] = "rm -f"
  CONFIG["PKG_CONFIG"] = ""
  CONFIG["PYTHON"] = ""
  CONFIG["DOXYGEN"] = "doxygen"
  CONFIG["DOT"] = "dot"
  CONFIG["DTRACE"] = ""
  CONFIG["MAKEDIRS"] = "/bin/mkdir -p"
  CONFIG["MKDIR_P"] = "/bin/mkdir -p"
  CONFIG["INSTALL_DATA"] = "$(INSTALL) -m 644"
  CONFIG["INSTALL_SCRIPT"] = "$(INSTALL)"
  CONFIG["INSTALL_PROGRAM"] = "$(INSTALL)"
  CONFIG["SET_MAKE"] = ""
  CONFIG["LN_S"] = "ln -s"
  CONFIG["NM"] = "i686-linux-android-nm"
  CONFIG["DLLWRAP"] = ""
  CONFIG["WINDRES"] = ""
  CONFIG["OBJCOPY"] = ":"
  CONFIG["OBJDUMP"] = "i686-linux-android-objdump"
  CONFIG["ASFLAGS"] = ""
  CONFIG["AS"] = "i686-linux-android-as"
  CONFIG["AR"] = "i686-linux-android-ar"
  CONFIG["RANLIB"] = "i686-linux-android-ranlib"
  CONFIG["try_header"] = ""
  CONFIG["CC_VERSION"] = "$(CC) -v"
  CONFIG["COUTFLAG"] = "-o "
  CONFIG["OUTFLAG"] = "-o "
  CONFIG["CPPOUTFILE"] = "-o conftest.i"
  CONFIG["GNU_LD"] = "no"
  CONFIG["LD"] = "i686-linux-android-ld"
  CONFIG["GCC"] = "yes"
  CONFIG["EGREP"] = "/bin/grep -E"
  CONFIG["GREP"] = "/bin/grep"
  CONFIG["CPP"] = "$(CC) -E"
  CONFIG["CXXFLAGS"] = "$(cxxflags)"
  CONFIG["CXX"] = "i686-linux-android-g++"
  CONFIG["OBJEXT"] = "o"
  CONFIG["CPPFLAGS"] = " $(DEFS) $(cppflags)"
  CONFIG["LDFLAGS"] = "-L. -fstack-protector -rdynamic -Wl,-export-dynamic"
  CONFIG["CFLAGS"] = "$(cflags)"
  CONFIG["CC"] = "i686-linux-android-gcc"
  CONFIG["NACL_SDK_VARIANT"] = ""
  CONFIG["NACL_SDK_ROOT"] = ""
  CONFIG["NACL_TOOLCHAIN"] = ""
  CONFIG["target_os"] = "linux-android"
  CONFIG["target_vendor"] = "pc"
  CONFIG["target_cpu"] = "i686"
  CONFIG["target"] = "i686-pc-linux-android"
  CONFIG["host_os"] = "linux-android"
  CONFIG["host_vendor"] = "pc"
  CONFIG["host_cpu"] = "i686"
  CONFIG["host"] = "i686-pc-linux-android"
  CONFIG["RUBY_VERSION_NAME"] = "$(RUBY_BASE_NAME)-$(ruby_version)"
  CONFIG["RUBYW_BASE_NAME"] = "rubyw"
  CONFIG["RUBY_BASE_NAME"] = "ruby"
  CONFIG["build_os"] = "linux-gnu"
  CONFIG["build_vendor"] = "pc"
  CONFIG["build_cpu"] = "i686"
  CONFIG["build"] = "i686-pc-linux-gnu"
  CONFIG["RUBY_RELEASE_DATE"] = "2013-05-24"
  CONFIG["RUBY_PROGRAM_VERSION"] = "2.1.0"
  CONFIG["target_alias"] = ""
  CONFIG["host_alias"] = "i686-linux-android"
  CONFIG["build_alias"] = "i686-pc-linux-gnu"
  CONFIG["LIBS"] = "-ldl -lm "
  CONFIG["ECHO_T"] = ""
  CONFIG["ECHO_N"] = "-n"
  CONFIG["ECHO_C"] = ""
  CONFIG["DEFS"] = ""
  CONFIG["mandir"] = "$(datarootdir)/man"
  CONFIG["localedir"] = "$(datarootdir)/locale"
  CONFIG["libdir"] = "$(exec_prefix)/lib"
  CONFIG["psdir"] = "$(docdir)"
  CONFIG["pdfdir"] = "$(docdir)"
  CONFIG["dvidir"] = "$(docdir)"
  CONFIG["htmldir"] = "$(docdir)"
  CONFIG["infodir"] = "$(datarootdir)/info"
  CONFIG["docdir"] = "$(datarootdir)/doc/$(PACKAGE)"
  CONFIG["oldincludedir"] = "/usr/include"
  CONFIG["includedir"] = "$(prefix)/include"
  CONFIG["localstatedir"] = "$(prefix)/var"
  CONFIG["sharedstatedir"] = "$(prefix)/com"
  CONFIG["sysconfdir"] = "$(prefix)/etc"
  CONFIG["datadir"] = "$(datarootdir)"
  CONFIG["datarootdir"] = "$(prefix)/share"
  CONFIG["libexecdir"] = "$(exec_prefix)/libexec"
  CONFIG["sbindir"] = "$(exec_prefix)/sbin"
  CONFIG["bindir"] = "$(exec_prefix)/bin"
  CONFIG["exec_prefix"] = "$(prefix)"
  CONFIG["PACKAGE_URL"] = ""
  CONFIG["PACKAGE_BUGREPORT"] = ""
  CONFIG["PACKAGE_STRING"] = ""
  CONFIG["PACKAGE_VERSION"] = ""
  CONFIG["PACKAGE_TARNAME"] = ""
  CONFIG["PACKAGE_NAME"] = ""
  CONFIG["PATH_SEPARATOR"] = ":"
  CONFIG["SHELL"] = "/bin/sh"
  CONFIG["archdir"] = "$(rubyarchdir)"
  CONFIG["topdir"] = File.dirname(__FILE__)
  MAKEFILE_CONFIG = {}
  CONFIG.each{|k,v| MAKEFILE_CONFIG[k] = v.dup}
  def RbConfig::expand(val, config = CONFIG)
    newval = val.gsub(/\$\$|\$\(([^()]+)\)|\$\{([^{}]+)\}/) {
      var = $&
      if !(v = $1 || $2)
	'$'
      elsif key = config[v = v[/\A[^:]+(?=(?::(.*?)=(.*))?\z)/]]
	pat, sub = $1, $2
	config[v] = false
	config[v] = RbConfig::expand(key, config)
	key = key.gsub(/#{Regexp.quote(pat)}(?=\s|\z)/n) {sub} if pat
	key
      else
	var
      end
    }
    val.replace(newval) unless newval == val
    val
  end
  CONFIG.each_value do |val|
    RbConfig::expand(val)
  end

  # returns the absolute pathname of the ruby command.
  def RbConfig.ruby
    File.join(
      RbConfig::CONFIG["bindir"],
      RbConfig::CONFIG["ruby_install_name"] + RbConfig::CONFIG["EXEEXT"]
    )
  end
end
autoload :Config, "rbconfig/obsolete.rb" # compatibility for ruby-1.8.4 and older.
CROSS_COMPILING = nil unless defined? CROSS_COMPILING

[ruby-dev:47368] Re: -Lprefix/lib

[Tanaka Akira]

2013年5月24日 15:55 Tanaka Akira <akr@fsij•org>:
> 2013年5月24日 10:39 Nobuyoshi Nakada <nobu@ruby-lang.org>:
>>
>>> 実際に問題が出た環境は buildroot で作った i386 環境と、
>>> Android (x86) の環境です。
>>> ビルド環境 (x86_64) と中途半端に似ていると問題が起きやすいようです。
>>
>> そのrbconfig.rbを見せてもらえますか。
>
> 添付します。以下のふたつです。

おっと、r40907 で対処済みでしたか。
試します。
-- 
[田中 哲][たなか あきら][Tanaka Akira]

[ruby-dev:47370] Re: -Lprefix/lib

[Tanaka Akira]

2013年5月24日 16:06 Tanaka Akira <akr@fsij•org>:
>
> おっと、r40907 で対処済みでしたか。
> 試します。

ちゃんと直ってました。ありがとうございます。

http://www.rubyist.net/~akr/chkbuild/debian/crossruby-trunk-i386/log/20130524T200310Z.diff.html.gz
http://www.rubyist.net/~akr/chkbuild/debian/crossruby-trunk-x86android/log/20130524T213910Z.diff.html.gz
-- 
[田中 哲][たなか あきら][Tanaka Akira]