diff --git a/configure b/configure
index 2b863be108be26..d79a97180391d8 100755
--- a/configure
+++ b/configure
@@ -8398,9 +8398,23 @@ $as_echo "$BOLT_INSTRUMENT_FLAGS" >&6; }
 $as_echo_n "checking BOLT_APPLY_FLAGS... " >&6; }
 if test -z "${BOLT_APPLY_FLAGS}"
 then
-  BOLT_APPLY_FLAGS=-update-debug-sections -reorder-blocks=ext-tsp -reorder-functions=hfsort+ -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot
-
-
+  BOLT_APPLY_FLAGS="\
+ -update-debug-sections\
+ -reorder-blocks=ext-tsp\
+ -reorder-functions=hfsort+\
+ -split-functions\
+ -icf=1\
+ -inline-all\
+ -split-eh\
+ -reorder-functions-use-hot-size\
+ -peepholes=none\
+ -jump-tables=aggressive\
+ -inline-ap\
+ -indirect-call-promotion=all\
+ -dyno-stats\
+ -use-gnu-stack\
+ -frame-opt=hot\
+"
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BOLT_APPLY_FLAGS" >&5
 $as_echo "$BOLT_APPLY_FLAGS" >&6; }
diff --git a/configure.ac b/configure.ac
index 786d3414eb0e06..e82a76c8186cb1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2085,26 +2085,23 @@ AC_ARG_VAR(
 AC_MSG_CHECKING([BOLT_APPLY_FLAGS])
 if test -z "${BOLT_APPLY_FLAGS}"
 then
-  AS_VAR_SET(
-    [BOLT_APPLY_FLAGS],
-    [m4_join([ ],
-      [-update-debug-sections],
-      [-reorder-blocks=ext-tsp],
-      [-reorder-functions=hfsort+],
-      [-split-functions],
-      [-icf=1],
-      [-inline-all],
-      [-split-eh],
-      [-reorder-functions-use-hot-size],
-      [-peepholes=none],
-      [-jump-tables=aggressive],
-      [-inline-ap],
-      [-indirect-call-promotion=all],
-      [-dyno-stats],
-      [-use-gnu-stack],
-      [-frame-opt=hot]
-    )]
-  )
+  BOLT_APPLY_FLAGS="\
+ -update-debug-sections\
+ -reorder-blocks=ext-tsp\
+ -reorder-functions=hfsort+\
+ -split-functions\
+ -icf=1\
+ -inline-all\
+ -split-eh\
+ -reorder-functions-use-hot-size\
+ -peepholes=none\
+ -jump-tables=aggressive\
+ -inline-ap\
+ -indirect-call-promotion=all\
+ -dyno-stats\
+ -use-gnu-stack\
+ -frame-opt=hot\
+"
 fi
 AC_MSG_RESULT([$BOLT_APPLY_FLAGS])