diff -up perl-5.24.4/Makefile.SH.orig perl-5.24.4/Makefile.SH
--- perl-5.24.4/Makefile.SH.orig	2018-10-02 12:18:23.627226701 +0200
+++ perl-5.24.4/Makefile.SH	2018-10-02 13:35:03.858920366 +0200
@@ -451,6 +451,8 @@ CCCMD    = sh $(shellflags) cflags "opti
 
 CCCMDSRC = sh $(shellflags) cflags "optimize='$(OPTIMIZE)'" $<
 
+DTRACEFLAGS = sh $(shellflags) cflags "optimize='$(OPTIMIZE)'" $@
+
 CONFIGPM_FROM_CONFIG_SH = lib/Config.pm lib/Config_heavy.pl
 CONFIGPM = $(CONFIGPM_FROM_CONFIG_SH) lib/Config_git.pl
 
@@ -865,13 +867,13 @@ mydtrace.h: $(DTRACE_H)
 	define)
 		$spitshell >>$Makefile <<'!NO!SUBS!'
 $(DTRACE_MINI_O): perldtrace.d $(miniperl_objs_nodt)
-	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_MINI_O) $(miniperl_objs_nodt)
+	CFLAGS="`$(DTRACEFLAGS)`" $(DTRACE) -G -s perldtrace.d -o $(DTRACE_MINI_O) $(miniperl_objs_nodt)
 
 $(DTRACE_PERLLIB_O): perldtrace.d $(perllib_objs_nodt)
-	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_PERLLIB_O) $(perllib_objs_nodt)
+	CFLAGS="`$(DTRACEFLAGS)`" $(DTRACE) -G -s perldtrace.d -o $(DTRACE_PERLLIB_O) $(perllib_objs_nodt)
 
 $(DTRACE_MAIN_O): perldtrace.d perlmain$(OBJ_EXT)
-	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_MAIN_O) perlmain$(OBJ_EXT)
+	CFLAGS="`$(DTRACEFLAGS)`" $(DTRACE) -G -s perldtrace.d -o $(DTRACE_MAIN_O) perlmain$(OBJ_EXT)
 
 !NO!SUBS!
 		;;
diff -up perl-5.24.4/cflags.SH.orig perl-5.24.4/cflags.SH
--- perl-5.24.4/cflags.SH.orig	2018-10-02 14:37:09.368649895 +0200
+++ perl-5.24.4/cflags.SH	2018-10-02 14:39:10.785695193 +0200
@@ -518,7 +518,10 @@ for file do
     esac
 
     # Can we perhaps use $ansi2knr here
-    echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
+    case "$file" in
+    dtrace_*) echo "$ccflags $stdflags $optimize $warn $extra";;
+    *) echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
+    esac
 
     . $TOP/config.sh