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--- Configure.orig	2017-09-22 14:26:35 UTC
+++ Configure
@@ -940,6 +940,7 @@ lddlflags=''
 usedl=''
 doublesize=''
 dtraceobject=''
+dtracexnolibs=''
 ebcdic=''
 fflushNULL=''
 fflushall=''
@@ -8154,10 +8155,19 @@ while $test 1 ; do
 
 	if $test -f $dtrace
 	then
-		if $dtrace -h -s ../perldtrace.d \
+		if $dtrace -h -xnolibs -s ../perldtrace.d \
 			-o perldtrace.tmp >/dev/null 2>&1 \
 			&& rm -f perldtrace.tmp
 		then
+			default_xnolibs=$define
+			echo " "
+			echo "Good: your $dtrace knows about the -h flag"
+			echo "and apparently the -xnolibs flag."
+		elif $dtrace -h -s ../perldtrace.d \
+			-o perldtrace.tmp >/dev/null 2>&1 \
+			&& rm -f perldtrace.tmp
+		then
+			default_xnolibs=$undef
 			echo " "
 			echo "Good: your $dtrace knows about the -h flag."
 		else
@@ -8171,6 +8181,17 @@ while $test 1 ; do
 EOM
 			exit 1
 		fi
+		case "$dtracexnolibs" in
+		$define|true|[yY]*)
+			dtracxnolibs=$define
+			;;
+		''|' ')
+		        dtracexnolibs=$default_xnolibs
+			;;
+		*)
+			dtracexnolibs=$undef
+			;;
+		esac
 		break;
 	fi
 
@@ -20770,7 +20791,11 @@ $define)
         dtraceobject=$define
         ;;
     ' '|'')
-        $dtrace -h -s ../perldtrace.d -o perldtrace.h
+        case "$dtracexnolibs" in
+        $define) xnolibs_option=-xnolibs ;;
+        *) xnolibs_option= ;;
+        esac
+        $dtrace -h $xnolibs_option -s ../perldtrace.d -o perldtrace.h
         $cat >try.c <<EOM
 #include "perldtrace.h"
 int main(void) {
@@ -20780,14 +20805,14 @@ int main(void) {
 EOM
         dtraceobject=$undef
         if $cc -c -o try.o $optimize $ccflags try.c \
-                    && $dtrace -G -s ../perldtrace.d try.o >/dev/null 2>&1; then
+                    && $dtrace -G $xnolibs_option -s ../perldtrace.d try.o >/dev/null 2>&1; then
                 dtraceobject=$define
             echo "Your dtrace builds an object file"
         fi
-        $rm -f try.c try.o perldtrace.o
         ;;
     *) dtraceobject=$undef ;;
     esac
+    $rm -f try.c try.o perldtrace.o perldtrace.h
 esac
 
 : Determine if this is an EBCDIC system
@@ -24736,6 +24761,7 @@ drand01='$drand01'
 drand48_r_proto='$drand48_r_proto'
 dtrace='$dtrace'
 dtraceobject='$dtraceobject'
+dtracexnolibs='$dtracexnolibs'
 dynamic_ext='$dynamic_ext'
 eagain='$eagain'
 ebcdic='$ebcdic'
--- Makefile.SH.orig	2017-07-15 18:00:51 UTC
+++ Makefile.SH
@@ -390,8 +390,13 @@ VG_TEST  ?= ./perl -e 1 2>/dev/null
 	;;
 esac
 
+case "$dtracexnolibs" in
+define) xnolibs=-xnolibs ;;
+*) xnolibs= ;;
+esac
+
 $spitshell >>$Makefile <<!GROK!THIS!
-DTRACE = $dtrace
+DTRACE = $dtrace $xnolibs
 DTRACE_H = $dtrace_h
 
 DTRACE_PERLLIB_O = $dtrace_perllib_o # "dtrace -G" output for perllib_objs
@@ -518,10 +523,53 @@ main_only_objs = op$(OBJ_EXT)     perl$(
 miniperl_objs_nodt = $(mini_only_objs) $(common_objs) miniperlmain$(OBJ_EXT)
 perllib_objs_nodt  = $(main_only_objs) $(common_objs)
 
+!NO!SUBS!
+
+# dtrace with -G modifies the source object files, which can cause
+# dependency issues, and can cause the dtrace -G to fail on FreeBSD
+# so separate the objects generated by $(CC) from those used to link
+# the executable when dtrace -G is involved.
+#
+# $(FOO:op%os=np%ns) isn't generally portable but is portable to
+# the makes on darwin, Solaris, FreeBSD and Linux, which is where we
+# use dtrace
+
+case "$usedtrace:$dtraceobject" in
+define:define)
+    $spitshell >>$Makefile <<'!NO!SUBS!'
+
+miniperl_dtrace_objs = $(miniperl_objs_nodt:%=mpdtrace/%) 
+perllib_dtrace_objs = $(perllib_objs_nodt:%=libpdtrace/%)
+perlmain_dtrace_objs = maindtrace/perlmain$(OBJ_EXT)
+
+miniperl_objs = $(miniperl_dtrace_objs) $(DTRACE_MINI_O)
+perllib_objs  = $(perllib_dtrace_objs) $(DTRACE_PERLLIB_O)
+perlmain_objs = $(perlmain_dtrace_objs) $(DTRACE_MAIN_O)
+
+miniperl_dep = $(DTRACE_MINI_O)
+perllib_dep = $(DTRACE_PERLLIB_O)
+perlmain_dep = $(DTRACE_MAIN_O)
+
+!NO!SUBS!
+    ;;
+    *)
+	
+    $spitshell >>$Makefile <<'!NO!SUBS!'
+
 miniperl_objs = $(miniperl_objs_nodt) $(DTRACE_MINI_O)
 perllib_objs  = $(perllib_objs_nodt) $(DTRACE_PERLLIB_O)
 perlmain_objs = perlmain$(OBJ_EXT) $(DTRACE_MAIN_O)
 
+miniperl_dep = $(miniperl_objs)
+perllib_dep = $(perllib_objs)
+perlmain_dep = $(perlmain_objs)
+
+!NO!SUBS!
+    ;;
+esac
+
+$spitshell >>$Makefile <<'!NO!SUBS!'
+
 perltoc_pod_prereqs = extra.pods pod/perl5243delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
 generated_pods = pod/perltoc.pod $(perltoc_pod_prereqs)
 generated_headers = uudmap.h bitcount.h mg_data.h
@@ -860,19 +908,32 @@ 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)
+	-rm -rf mpdtrace
+	mkdir mpdtrace
+	cp $(miniperl_objs_nodt) mpdtrace/
+	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_MINI_O) $(miniperl_dtrace_objs)
 
 $(DTRACE_PERLLIB_O): perldtrace.d $(perllib_objs_nodt)
-	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_PERLLIB_O) $(perllib_objs_nodt)
+	-rm -rf libpdtrace
+	mkdir libpdtrace
+	cp $(perllib_objs_nodt) libpdtrace/
+	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_PERLLIB_O) $(perllib_dtrace_objs)
 
 $(DTRACE_MAIN_O): perldtrace.d perlmain$(OBJ_EXT)
-	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_MAIN_O) perlmain$(OBJ_EXT)
+	-rm -rf maindtrace
+	mkdir maindtrace
+	cp perlmain$(OBJ_EXT) maindtrace/
+	$(DTRACE) -G -s perldtrace.d -o $(DTRACE_MAIN_O) $(perlmain_dtrace_objs) ||	      \
+	  ( $(ECHO) "No probes in perlmain$(OBJ_EXT), generating a dummy $(DTRACE_MAIN_O)" && \
+	    $(ECHO) >dtrace_main.c &&							      \
+	    `$(CCCMD)` $(PLDLFLAGS) dtrace_main.c &&					      \
+	     rm -f dtrace_main.c )
 
 !NO!SUBS!
 		;;
     esac
 	$spitshell >>$Makefile <<'!NO!SUBS!'
-$(LIBPERL): $& $(perllib_objs) $(DYNALOADER) $(LIBPERLEXPORT)
+$(LIBPERL): $& $(perllib_dep) $(DYNALOADER) $(LIBPERLEXPORT)
 !NO!SUBS!
 	case "$useshrplib" in
 	true)
@@ -973,7 +1034,7 @@ lib/buildcustomize.pl: $& $(miniperl_obj
 	*)
 		if test "X$hostperl" != X; then
 			$spitshell >>$Makefile <<!GROK!THIS!
-lib/buildcustomize.pl: \$& \$(miniperl_objs) write_buildcustomize.pl
+lib/buildcustomize.pl: \$& \$(miniperl_dep) write_buildcustomize.pl
 	-@rm -f miniperl.xok
 	-@rm \$(MINIPERL_EXE)
 	\$(LNS) \$(HOST_PERL) \$(MINIPERL_EXE)
@@ -982,7 +1043,7 @@ lib/buildcustomize.pl: \$& \$(miniperl_o
 !GROK!THIS!
 		else
 			$spitshell >>$Makefile <<'!NO!SUBS!'
-lib/buildcustomize.pl: $& $(miniperl_objs) write_buildcustomize.pl
+lib/buildcustomize.pl: $& $(miniperl_dep) write_buildcustomize.pl
 	-@rm -f miniperl.xok
 	$(CC) $(CLDFLAGS) -o $(MINIPERL_EXE) \
 	    $(miniperl_objs) $(libs)
@@ -995,7 +1056,7 @@ lib/buildcustomize.pl: $& $(miniperl_obj
 
 	$spitshell >>$Makefile <<'!NO!SUBS!'
 
-$(PERL_EXE): $& $(perlmain_objs) $(LIBPERL) $(static_ext) ext.libs $(PERLEXPORT) write_buildcustomize.pl
+$(PERL_EXE): $& $(perlmain_dep) $(LIBPERL) $(static_ext) ext.libs $(PERLEXPORT) write_buildcustomize.pl
 	-@rm -f miniperl.xok
 !NO!SUBS!
 
--- Porting/Glossary.orig	2017-06-30 21:03:20 UTC
+++ Porting/Glossary
@@ -2949,6 +2949,11 @@ dtrace (usedtrace.U):
 dtraceobject (dtraceobject.U):
 	Whether we need to build an object file with the dtrace tool.
 
+dtracexnolibs (dtraceobject.U):
+	Whether dtrace accepts -xnolibs.  If available we call dtrace -h
+	and dtrace -G with -xnolibs to allow dtrace to run in a jail on
+	FreeBSD.
+
 dynamic_ext (Extensions.U):
 	This variable holds a list of XS extension files we want to
 	link dynamically into the package.  It is used by Makefile.
--- ext/XS-APItest/Makefile.PL.orig	2017-06-30 21:03:22 UTC
+++ ext/XS-APItest/Makefile.PL
@@ -58,7 +58,8 @@ sub MY::postamble
 DTRACE_D = ../../perldtrace.d
 
 dtrace\$(OBJ_EXT): \$(DTRACE_D) core\$(OBJ_EXT)
-	$Config{dtrace} -G -s \$(DTRACE_D) -o dtrace\$(OBJ_EXT) core\$(OBJ_EXT)
+	$Config{dtrace} -G -s \$(DTRACE_D) -o dtrace\$(OBJ_EXT) core\$(OBJ_EXT) || \\
+	  ( \$(ECHO) >dtrace.c && \$(CCCMD) \$(CCCDLFLAGS) dtrace.c && rm -f dtrace.c )
 POSTAMBLE
 
     return $post;
--- hints/freebsd.sh.orig	2017-06-30 21:03:22 UTC
+++ hints/freebsd.sh
@@ -105,6 +105,15 @@ case "$osvers" in
 	;;
 esac
 
+case "$osvers" in
+10.*)
+	# dtrace on 10.x needs libelf symbols, but we don't know if the
+	# user is going to request usedtrace and there's no .cbu for usedtrace
+	libswanted="$libswanted elf"
+	echo "libswanted $libswanted" >&4
+	;;
+esac     
+
 # Dynamic Loading flags have not changed much, so they are separated
 # out here to avoid duplicating them everywhere.
 case "$osvers" in