lto/addAsmGlobalSymbols: fail fracefully when the target does not define AsmParser.

configure

 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.60 for llvm 3.0svn.
 #
 # Report bugs to <llvmbugs@cs.uiuc.edu>.
 #
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
 # 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
 # This configure script is free software; the Free Software Foundation
 # gives unlimited permission to copy, distribute and modify it.
@@ skipping 1412 matching lines @@
                           is YES)
   --enable-shared         Build a shared library and link tools against it
                           (default is NO)
   --enable-embed-stdcxx   Build a shared library with embedded libstdc++ for
                           Win32 DLL (default is YES)
   --enable-timestamps     Enable embedding timestamp information in build
                           (default is YES)
   --enable-targets        Build specific host targets: all or
                           target1,target2,... Valid targets are: host, x86,
                           x86_64, sparc, powerpc, alpha, arm, mips, spu,
-                          xcore, msp430, systemz, blackfin, ptx, cbe, and cpp
-                          (default=all)
+                          xcore, msp430, systemz, blackfin, ptx, pnacl, cbe,
+                          and cpp (default=all)
   --enable-cbe-printf-a   Enable C Backend output with hex floating point via
                           %a (default is YES)
   --enable-bindings       Build specific language bindings:
                           all,auto,none,{binding-name} (default=auto)
   --enable-libffi         Check for the presence of libffi (default is NO)
   --enable-ltdl-install   install libltdl
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
@@ skipping 3613 matching lines @@
 if test "${enable_targets+set}" = set; then
   enableval=$enable_targets;
 else
   enableval=all
 fi
 
 if test "$enableval" = host-only ; then
   enableval=host
 fi
 case "$enableval" in
-  all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha ARM Mips CellSPU XCore MSP430 SystemZ Blackfin CBackend CppBackend MBlaze PTX" ;;
+  all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha ARM Mips CellSPU XCore MSP430 SystemZ Blackfin CBackend CppBackend MBlaze PTX PNaCl" ;;
   *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
       case "$a_target" in
         x86)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
         x86_64)   TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
         sparc)    TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
         powerpc)  TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
         alpha)    TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
         arm)      TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
         mips)     TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
         spu)      TARGETS_TO_BUILD="CellSPU $TARGETS_TO_BUILD" ;;
         xcore)    TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
         msp430)   TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
         systemz)  TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
         blackfin) TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
         cbe)      TARGETS_TO_BUILD="CBackend $TARGETS_TO_BUILD" ;;
         cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
         mblaze)   TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
         ptx)      TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
+        pnacl)    TARGETS_TO_BUILD="PNaCl $TARGETS_TO_BUILD" ;;
         host) case "$llvm_cv_target_arch" in
             x86)         TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
             x86_64)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
             Sparc)       TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
             PowerPC)     TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
             Alpha)       TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
             ARM)         TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
             Mips)        TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
             MBlaze)      TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
             CellSPU|SPU) TARGETS_TO_BUILD="CellSPU $TARGETS_TO_BUILD" ;;
             XCore)       TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
             MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
             s390x)       TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
             Blackfin)    TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
             PTX)         TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
+            PNaCl)       TARGETS_TO_BUILD="PNaCl $TARGETS_TO_BUILD" ;;
             *)       { { echo "$as_me:$LINENO: error: Can not set target to build" >&5
 echo "$as_me: error: Can not set target to build" >&2;}
    { (exit 1); exit 1; }; } ;;
           esac ;;
         *) { { echo "$as_me:$LINENO: error: Unrecognized target $a_target" >&5
 echo "$as_me: error: Unrecognized target $a_target" >&2;}
    { (exit 1); exit 1; }; } ;;
       esac
   done
   ;;
@@ skipping 6495 matching lines @@
 else
   libltdl_cv_need_uscore=unknown
           save_LIBS="$LIBS"
           LIBS="$LIBS $LIBADD_DL"
           if test "$cross_compiling" = yes; then :
   libltdl_cv_need_uscore=cross
 else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 11617 "configure"
+#line 11619 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
 #include <dlfcn.h>
 #endif
 
 #include <stdio.h>
 
 #ifdef RTLD_GLOBAL
 #  define LT_DLGLOBAL           RTLD_GLOBAL
@@ skipping 12609 matching lines @@
            --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
         { { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
     cd "$ac_popdir"
   done
 fi