ObjFW  Diff

Differences From Artifact [fe25322d35]:

• File configure.ac — part of check-in [f2a8bdf254] at 2013-05-25 11:40:28 on branch trunk — Switch back to backtrace().

  The reason is that __builtin_frame_address(n) for n > 0 seems to just
  crash on most platforms when -fomit-stack-pointer is specified, which
  seems to be the default for many platforms on -O2. The documentation
  says that __builtin_frame_address() should return NULL in case it can't
  get the frame, but it seems to crash instead.

  Therefore, this commit reverts to using backtrace() from execinfo.h, if
  available. However, as __builtin_frame_address() seems to always work on
  PPC (even with -fomit-frame-pointer) and seems to be the only way to get
  a backtrace on the Wii, this is still used if backtrace() is unavailable
  and __ppc__ defined. (user: js, size: 23054) [annotate] [blame] [check-ins using]

To Artifact [c5958dcc8b]:

• File configure.ac — part of check-in [42ed7e394c] at 2013-06-03 21:38:31 on branch trunk — OFException: Cleaner way to check architecture. (user: js, size: 23196) [annotate] [blame] [check-ins using]

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esac
AS_IF([test x"$have_processes" = x"yes"], [
	AC_SUBST(OFPROCESS_M, "OFProcess.m")
	AC_DEFINE(OF_HAVE_PROCESSES, 1, [Whether we have processes])
])

AC_DEFUN([CHECK_BUILTIN_RETURN_ADDRESS], [
	AC_MSG_CHECKING(for __builtin_return_address)
	AC_TRY_LINK([], [






		__builtin_return_address(1);
	], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_BUILTIN_RETURN_ADDRESS, 1,
			[Whether we have __builtin_return_address])
	], [
		AC_MSG_RESULT(no)

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esac
AS_IF([test x"$have_processes" = x"yes"], [
	AC_SUBST(OFPROCESS_M, "OFProcess.m")
	AC_DEFINE(OF_HAVE_PROCESSES, 1, [Whether we have processes])
])

AC_DEFUN([CHECK_BUILTIN_RETURN_ADDRESS], [
	AC_MSG_CHECKING(for working __builtin_return_address)
	AC_TRY_LINK([
		#if defined(__ppc__) || defined(__PPC__)
		/* __builtin_return_address() is known to work correctly */
		#else
		# error
		#endif
	], [
		__builtin_return_address(1);
	], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_BUILTIN_RETURN_ADDRESS, 1,
			[Whether we have __builtin_return_address])
	], [
		AC_MSG_RESULT(no)