diff --git a/Makefile.config.in b/Makefile.config.in
index 03d6290..d1efb2b 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -103,6 +103,9 @@
 # Targets that we should build
 TARGETS_TO_BUILD=@TARGETS_TO_BUILD@
 
+# Extra options to compile LLVM with
+EXTRA_OPTIONS=@EXTRA_OPTIONS@
+
 # Endian-ness of the target
 ENDIAN=@ENDIAN@
 
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 35b6988..690f18a 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -325,6 +325,16 @@
   *) AC_MSG_ERROR([Invalid path for --with-llvmgccdir. Provide full path]) ;;
 esac
 
+dnl Specify extra build options
+AC_ARG_WITH(extra-options,
+  AS_HELP_STRING([--with-extra-options],
+                 [Specify addtional options to compile LLVM with]),,
+                 extraopts=default)
+case "$extraopts" in
+  default) EXTRA_OPTIONS= ;;
+  *) EXTRA_OPTIONS=$extraopts ;;
+esac
+AC_SUBST(EXTRA_OPTIONS,$EXTRA_OPTIONS)
 
 dnl===-----------------------------------------------------------------------===
 dnl===
diff --git a/configure b/configure
index 7a29ebe..5c556cd 100755
--- a/configure
+++ b/configure
@@ -477,7 +477,7 @@
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS LLVM_COPYRIGHT subdirs build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os OS LLVM_ON_UNIX LLVM_ON_WIN32 ARCH ENDIAN CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CVSBUILD ENABLE_OPTIMIZED DISABLE_ASSERTIONS DEBUG_RUNTIME JIT TARGET_HAS_JIT ENABLE_DOXYGEN ENABLE_THREADS TARGETS_TO_BUILD CPP CXX CXXFLAGS ac_ct_CXX LEX LEXLIB LEX_OUTPUT_ROOT FLEX YACC BISON ifGNUmake LN_S CMP CP DATE FIND GREP MKDIR MV RANLIB ac_ct_RANLIB RM SED TAR GRAPHVIZ DOT GV DOTTY PERL HAVE_PERL INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA BZIP2 DOXYGEN ETAGS GROFF GZIP POD2HTML POD2MAN RUNTEST TCLSH ZIP EGREP INSTALL_LTDL_TRUE INSTALL_LTDL_FALSE CONVENIENCE_LTDL_TRUE CONVENIENCE_LTDL_FALSE LIBADD_DL ECHO AR ac_ct_AR STRIP ac_ct_STRIP CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL ETAGSFLAGS LLVMGCC LLVMGXX ALLOCA MMAP_FILE LLVMCC1 LLVMCC1PLUS LLVMGCCDIR LLVMGCC_VERSION LLVMGCC_MAJVERS SHLIBEXT LLVM_PREFIX LLVM_BINDIR LLVM_LIBDIR LLVM_DATADIR LLVM_DOCSDIR LLVM_ETCDIR LLVM_INCLUDEDIR LLVM_INFODIR LLVM_MANDIR LLVM_CONFIGTIME LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS LLVM_COPYRIGHT subdirs build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os OS LLVM_ON_UNIX LLVM_ON_WIN32 ARCH ENDIAN CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CVSBUILD ENABLE_OPTIMIZED DISABLE_ASSERTIONS DEBUG_RUNTIME JIT TARGET_HAS_JIT ENABLE_DOXYGEN ENABLE_THREADS TARGETS_TO_BUILD EXTRA_OPTIONS CPP CXX CXXFLAGS ac_ct_CXX LEX LEXLIB LEX_OUTPUT_ROOT FLEX YACC BISON ifGNUmake LN_S CMP CP DATE FIND GREP MKDIR MV RANLIB ac_ct_RANLIB RM SED TAR GRAPHVIZ DOT GV DOTTY PERL HAVE_PERL INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA BZIP2 DOXYGEN ETAGS GROFF GZIP POD2HTML POD2MAN RUNTEST TCLSH ZIP EGREP INSTALL_LTDL_TRUE INSTALL_LTDL_FALSE CONVENIENCE_LTDL_TRUE CONVENIENCE_LTDL_FALSE LIBADD_DL ECHO AR ac_ct_AR STRIP ac_ct_STRIP CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL ETAGSFLAGS LLVMGCC LLVMGXX ALLOCA MMAP_FILE LLVMCC1 LLVMCC1PLUS LLVMGCCDIR LLVMGCC_VERSION LLVMGCC_MAJVERS SHLIBEXT LLVM_PREFIX LLVM_BINDIR LLVM_LIBDIR LLVM_DATADIR LLVM_DOCSDIR LLVM_ETCDIR LLVM_INCLUDEDIR LLVM_INFODIR LLVM_MANDIR LLVM_CONFIGTIME LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -1057,6 +1057,7 @@
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
   --with-llvmgccdir       Specify location of llvm-gcc install dir (default
                           searches PATH)
+  --with-extra-options    Specify addtional options to compile LLVM with
   --with-tclinclude       directory where tcl headers are
   --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
   --with-pic              try to use only PIC/non-PIC objects [default=use
@@ -3163,6 +3164,21 @@
 
 
 
+# Check whether --with-extra-options or --without-extra-options was given.
+if test "${with_extra_options+set}" = set; then
+  extraopts="$with_extra_options"
+
+else
+  extraopts=default
+fi;
+case "$extraopts" in
+  default) EXTRA_OPTIONS= ;;
+  *) EXTRA_OPTIONS=$extraopts ;;
+esac
+EXTRA_OPTIONS=$EXTRA_OPTIONS
+
+
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31891,6 +31907,7 @@
 s,@ENABLE_DOXYGEN@,$ENABLE_DOXYGEN,;t t
 s,@ENABLE_THREADS@,$ENABLE_THREADS,;t t
 s,@TARGETS_TO_BUILD@,$TARGETS_TO_BUILD,;t t
+s,@EXTRA_OPTIONS@,$EXTRA_OPTIONS,;t t
 s,@CPP@,$CPP,;t t
 s,@CXX@,$CXX,;t t
 s,@CXXFLAGS@,$CXXFLAGS,;t t