configure: make the unsupported error message less hostile

ChangeLog

@@ -1,3 +1,8 @@
+2016-01-17  Mike Frysinger  <vapier@gentoo.org>
+
+	* configure.ac: Rewrite error comment and use AC_MSG_ERROR.
+	* configure: Regenerated.
+
 2016-01-16  Andrew Senkevich  <andrew.senkevich@intel.com>
 
 	* sysdeps/x86_64/multiarch/memcpy_chk.S: Fixed typos.

configure

@@ -3850,9 +3850,6 @@ fi
 
 
 
-###
-### I put this here to prevent those annoying emails from people who cannot
-### read and try to compile glibc on unsupported platforms.  --drepper
 ###
 ### By using the undocumented --enable-hacker-mode option for configure
 ### one can skip this test to make the configuration not fail for unsupported
@@ -3863,13 +3860,12 @@ if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then
   *-linux* | *-gnu*)
     ;;
   *)
-    echo "*** The GNU C library is currently not available for this platform."
-    echo "*** So far nobody cared to port it and if there is no volunteer it"
-    echo "*** might never happen.  So, if you have interest to see glibc on"
-    echo "*** this platform visit"
-    echo "***	http://www.gnu.org/software/libc/porting.html"
-    echo "*** and join the group of porters"
-    exit 1
+    as_fn_error $? "
+*** The GNU C library is currently unavailable for this platform.
+*** If you are interested in seeing glibc on this platform visit
+*** the \"How to submit a new port\" in the wiki:
+***   https://sourceware.org/glibc/wiki/HomePage#Development
+*** and join the community!" "$LINENO" 5
     ;;
   esac
 fi

configure.ac

@@ -578,9 +578,6 @@ AC_SUBST(add_ons)
 AC_SUBST(add_on_subdirs)
 
 
-###
-### I put this here to prevent those annoying emails from people who cannot
-### read and try to compile glibc on unsupported platforms.  --drepper
 ###
 ### By using the undocumented --enable-hacker-mode option for configure
 ### one can skip this test to make the configuration not fail for unsupported
@@ -591,13 +588,12 @@ if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then
   *-linux* | *-gnu*)
     ;;
   *)
-    echo "*** The GNU C library is currently not available for this platform."
-    echo "*** So far nobody cared to port it and if there is no volunteer it"
-    echo "*** might never happen.  So, if you have interest to see glibc on"
-    echo "*** this platform visit"
-    echo "***	http://www.gnu.org/software/libc/porting.html"
-    echo "*** and join the group of porters"
-    exit 1
+    AC_MSG_ERROR([
+*** The GNU C library is currently unavailable for this platform.
+*** If you are interested in seeing glibc on this platform visit
+*** the "How to submit a new port" in the wiki:
+***   https://sourceware.org/glibc/wiki/#Development
+*** and join the community!])
     ;;
   esac
 fi