Add a BUILD_FLAGS variable so that autoconf checks have a place
to store additional flag options since too many things can
and do override CPPFLAGS. Also, this is exported, unlike CPPFLAGS
so it can be actually used elsewhere. This should enable us
to remove the AC_SUBSTs in the intel checks, but I have no way
of testing it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161233 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/configure b/configure
index fcd9179..1981b1d 100755
--- a/configure
+++ b/configure
@@ -765,6 +765,7 @@
 USE_INTEL_JITEVENTS
 INTEL_JITEVENTS_INCDIR
 INTEL_JITEVENTS_LIBDIR
+BUILD_FLAGS
 HAVE_PTHREAD
 HUGE_VAL_SANITY
 MMAP_FILE
@@ -10210,7 +10211,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10213 "configure"
+#line 10214 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13073,7 +13074,7 @@
             USE_OPROFILE=0
  ;;
         *) llvm_cv_oppath="${withval}/lib/oprofile"
-           CPPFLAGS="-I${withval}/include";;
+           BUILD_FLAGS="-I${withval}/include";;
       esac
       case $llvm_cv_os_type in
         Linux)
@@ -13500,7 +13501,7 @@
 
 
       LIBS="$LIBS -L${INTEL_JITEVENTS_LIBDIR}"
-      CPPFLAGS="$CPPFLAGS -I$INTEL_JITEVENTS_INCDIR"
+      BUILD_FLAGS="$CPPFLAGS -I$INTEL_JITEVENTS_INCDIR"
 
       { echo "$as_me:$LINENO: checking for library containing iJIT_IsProfilingActive" >&5
 echo $ECHO_N "checking for library containing iJIT_IsProfilingActive... $ECHO_C" >&6; }
@@ -13791,6 +13792,8 @@
 
 
 
+
+
 ac_header_dirent=no
 for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
   as_ac_Header=`echo "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
@@ -22059,6 +22062,7 @@
 USE_INTEL_JITEVENTS!$USE_INTEL_JITEVENTS$ac_delim
 INTEL_JITEVENTS_INCDIR!$INTEL_JITEVENTS_INCDIR$ac_delim
 INTEL_JITEVENTS_LIBDIR!$INTEL_JITEVENTS_LIBDIR$ac_delim
+BUILD_FLAGS!$BUILD_FLAGS$ac_delim
 HAVE_PTHREAD!$HAVE_PTHREAD$ac_delim
 HUGE_VAL_SANITY!$HUGE_VAL_SANITY$ac_delim
 MMAP_FILE!$MMAP_FILE$ac_delim
@@ -22084,7 +22088,7 @@
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 89; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 90; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5