* configure.in: use $@ instead of $(.TARGET) because .TARGET is not
	  supported by GNU make.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44769 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* ruby_atomic.h: use __atomic builtin functions supported by GCC.
	  __sync family are legacy functions now and it is recommended
	  that new code use the __atomic functions.
	  http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html

	* configure.in: check existence of __atomic functions.

	* ruby_atomic.h: define ATOMIC_SIZE_CAS() with
	  __atomic_compare_exchange_n() and refactoring.

	* ruby_atomic.h: remove duplicate definisions between ATOMIC_XXX
	  and ATOMIC_SIZE_XXX.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44316 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* common.mk: use RUNRUBY instead of MINIRUBY because MINIRUBY can't
	  require extension libraries. The patch is from nobu
	  (Nobuyoshi Nakada).

	* configure.in (RUNRUBY): append -- only after runruby.rb, not
	  cross-compiling baseruby, so that $(RUN_OPT) can be command line
	  options.  [ruby-dev:47703] [Bug #8893]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@43654 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* configure.in (sys/pstat.h): fix missing header check for
	  missing/setproctitle.c on HP-UX.  [ruby-core:56644] [Bug #8792]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@42913 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* configure.in (RUBY_DTRACE_POSTPROCESS): dtrace version SUN D 1.11
	  introduces a check in the dtrace compiler to ensure that probes
	  actually exist. If there are no probes, then the -G step will
	  fail. As this test is only being used to determine whether -G is
	  necessary (for instance, on OSX it is not), adding a real probe to
	  the conftest allows it to succeed on newer versions of dtrace.
	  Patch by Eric Saxby <sax AT livinginthepast.org> at
	  [ruby-core:55826].  [Fix GH-351], [Bug #8606].


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@41943 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	configure.in: suppress error messages

	* configure.in: suppress error messages, rm: cannot remove
  'conftest.dSYM', from AC_EGREP_CPP with CFLAGS=-g on Darwin.
	* configure.in (rm, shvar_to_cpp, unexpand_shvar): local is not
	  available on old shells.

	* configure.in (shvar_to_cpp): escape quotes for old shells.
	  [Bug #7959] [Bug #8071]

	* configure.in (RUBY_RM_RECURSIVE): this hack is needed by only
	  autoconf 2.69 or earlier on darwin.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40647 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  a patch provided by Hessob Park. [ruby-core:53157] [Backport #8020]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40489 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* configure.in: Fix c++ compiler auto-selection not only for
	  Darwin 11.x, but also the other versions of Darwin.

	* configure.in: set ac_cv_prog_cxx if CXX is supplied.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40314 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* configure.in (AC_CHECK_HEADERS): atomic.h for Solaris atomic_ops.

	* ruby_atomic.h: Skip using Solaris10 atomic_ops on Solaris 9 or
	  earlier if atomic.h is not available. [ruby-dev:47229] [Bug #8228]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40285 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	configure.in: fix unexpand_shvar

	* configure.in (unexpand_shvar): remove guarding quotes at last.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39915 b2dd03c8-39d4-4d8f-98ff-823fe69b080e