Additional LDFLAGS needed by AIX

[David Edelsohn]

>>>>> Benjamin Kosnik writes:

Ben> Hmm. I don't think GLIBCPP_CHECK_LINKER_FEATURES should be clearing 
Ben> either of these. In general, it looks like libstdc++-v3's efforts to 
Ben> outsmart the linker have failed. 

	How about something like the appended patch?

David


	* acinclude.m4 (GLIBCPP_CHECK_LINKER_FEATURES): Do not clear
	SECTION_LDFLAGS and OPT_LDFLAGS.  Fix ac_sectionLDflags type.

*** acinclude.m4	Wed Dec 19 11:16:36 2001
--- acinclude.m4	Fri Jan 11 21:19:52 2002
***************
*** 286,293 ****
    # If we're not using GNU ld, then there's no point in even trying these
    # tests.  Check for that first.  We should have already tested for gld
    # by now (in libtool), but require it now just to be safe...
!   SECTION_LDFLAGS=''
!   OPT_LDFLAGS=''
    AC_REQUIRE([AC_PROG_LD])
  
    # Set --gc-sections.
--- 286,293 ----
    # If we're not using GNU ld, then there's no point in even trying these
    # tests.  Check for that first.  We should have already tested for gld
    # by now (in libtool), but require it now just to be safe...
!   test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
!   test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
    AC_REQUIRE([AC_PROG_LD])
  
    # Set --gc-sections.
***************
*** 315,321 ****
         catch (...) { };
         return 0;
       }
!     ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
      if test "$ac_test_CFLAGS" = set; then
        CFLAGS="$ac_save_CFLAGS"
      else
--- 315,321 ----
         catch (...) { };
         return 0;
       }
!     ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
      if test "$ac_test_CFLAGS" = set; then
        CFLAGS="$ac_save_CFLAGS"
      else
***************
*** 323,329 ****
        CFLAGS=''
      fi
      if test "$ac_sectionLDflags" = "yes"; then
!       SECTION_LDFLAGS='-Wl,--gc-sections'
      fi
      AC_MSG_RESULT($ac_sectionLDflags)
    fi
--- 323,329 ----
        CFLAGS=''
      fi
      if test "$ac_sectionLDflags" = "yes"; then
!       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
      fi
      AC_MSG_RESULT($ac_sectionLDflags)
    fi
***************
*** 331,337 ****
    # Set linker optimization flags.
    if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
       test x"$enable_debug" = x"no"; then
!     OPT_LDFLAGS='-Wl,-O1'
    fi
  
    AC_SUBST(SECTION_LDFLAGS)
--- 331,337 ----
    # Set linker optimization flags.
    if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
       test x"$enable_debug" = x"no"; then
!     OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
    fi
  
    AC_SUBST(SECTION_LDFLAGS)