diff --git a/mozilla/security/coreconf/command.mk b/mozilla/security/coreconf/command.mk
index f231f1c5ccb..dff2d49a57f 100644
--- a/mozilla/security/coreconf/command.mk
+++ b/mozilla/security/coreconf/command.mk
@@ -47,6 +47,7 @@ LINK_DLL      = $(LINK) $(OS_DLLFLAGS) $(DLLFLAGS)
 LINK_EXE      = $(LINK) $(OS_LFLAGS) $(LFLAGS)
 CFLAGS        = $(OPTIMIZER) $(OS_CFLAGS) $(XP_DEFINE) $(DEFINES) $(INCLUDES) \
 		$(XCFLAGS)
+PERL          = perl
 RANLIB        = echo
 TAR           = /bin/tar
 #
diff --git a/mozilla/security/coreconf/rules.mk b/mozilla/security/coreconf/rules.mk
index 212e132629a..e8beeb640ac 100644
--- a/mozilla/security/coreconf/rules.mk
+++ b/mozilla/security/coreconf/rules.mk
@@ -75,7 +75,7 @@ endif
 
 import::
 	@echo "== import.pl =="
-	@perl -I$(CORE_DEPTH)/coreconf $(CORE_DEPTH)/coreconf/import.pl \
+	@$(PERL) -I$(CORE_DEPTH)/coreconf $(CORE_DEPTH)/coreconf/import.pl \
 		"RELEASE_TREE=$(RELEASE_TREE)"   \
 		"IMPORTS=$(IMPORTS)"             \
 		"VERSION=$(VERSION)" \
@@ -159,7 +159,7 @@ release:: release_clean release_export release_classes release_policy release_md
 
 release_cpdistdir::
 	@echo "== cpdist.pl =="
-	@perl -I$(CORE_DEPTH)/coreconf $(CORE_DEPTH)/coreconf/cpdist.pl \
+	@$(PERL) -I$(CORE_DEPTH)/coreconf $(CORE_DEPTH)/coreconf/cpdist.pl \
 		"RELEASE_TREE=$(RELEASE_TREE)" \
 		"CORE_DEPTH=$(CORE_DEPTH)" \
 		"MODULE=${MODULE}" \
@@ -185,7 +185,7 @@ release_cpdistdir::
 
 release_jars::
 	@echo "== release.pl =="
-	@perl -I$(CORE_DEPTH)/coreconf $(CORE_DEPTH)/coreconf/release.pl \
+	@$(PERL) -I$(CORE_DEPTH)/coreconf $(CORE_DEPTH)/coreconf/release.pl \
 		"RELEASE_TREE=$(RELEASE_TREE)" \
 		"PLATFORM=$(PLATFORM)" \
 		"OS_ARCH=$(OS_ARCH)" \
@@ -584,7 +584,7 @@ ifdef NETLIBDEPTH
 	CORE_DEPTH := $(NETLIBDEPTH)
 endif
 
-JAVA_EXPORT_SRCS=$(shell perl $(CORE_DEPTH)/coreconf/outofdate.pl $(PERLARG)	-d $(JAVA_DESTPATH)/$(PACKAGE) $(JSRCS) $(PRIVATE_JSRCS))
+JAVA_EXPORT_SRCS=$(shell $(PERL) $(CORE_DEPTH)/coreconf/outofdate.pl $(PERLARG)	-d $(JAVA_DESTPATH)/$(PACKAGE) $(JSRCS) $(PRIVATE_JSRCS))
 
 export:: $(JAVA_DESTPATH) $(JAVA_DESTPATH)/$(PACKAGE)
 ifneq ($(JAVA_EXPORT_SRCS),)
@@ -627,7 +627,7 @@ export:: $(JAVA_DESTPATH) $(JAVA_DESTPATH)/$(PACKAGE)
 		if test -d $$d; then						\
 			set $(EXIT_ON_ERROR);					\
 			files=`echo $$d/*.java`;				\
-			list=`perl $(CORE_DEPTH)/coreconf/outofdate.pl $(PERLARG)	\
+			list=`$(PERL) $(CORE_DEPTH)/coreconf/outofdate.pl $(PERLARG)	\
 				    -d $(JAVA_DESTPATH)/$(PACKAGE) $$files`;	\
 			if test "$${list}x" != "x"; then			\
 			    echo Building all java files in $$d;		\
@@ -756,7 +756,7 @@ export::
 		$(JAVAH) -jni -d $(JNI_GEN_DIR) $(JNI_GEN);				\
 	else										\
 		echo "Checking for out of date header files" ;                          \
-		perl $(CORE_DEPTH)/coreconf/jniregen.pl $(PERLARG)			\
+		$(PERL) $(CORE_DEPTH)/coreconf/jniregen.pl $(PERLARG)			\
 		 -d $(JAVA_DESTPATH) -j "$(JAVAH) -jni -d $(JNI_GEN_DIR)" $(JNI_GEN);\
 	fi
 endif
@@ -855,7 +855,7 @@ TESTS_DIR = $(RESULTS_DIR)/$(RESULTS_SUBDIR)/$(OS_TARGET)$(OS_RELEASE)$(CPU_TAG)
 ifneq ($(REGRESSION_SPEC),)
 
 ifneq ($(BUILD_OPT),)
-REGDATE = $(subst \ ,, $(shell perl  $(CORE_DEPTH)/$(MODULE)/scripts/now))
+REGDATE = $(subst \ ,, $(shell $(PERL)  $(CORE_DEPTH)/$(MODULE)/scripts/now))
 endif
 
 tests:: $(REGRESSION_SPEC) 
@@ -931,7 +931,7 @@ PERL_DEPENDENCIES_PROGRAM =                                                   \
 	    }
 
 .DEFAULT:
-	@perl -e '$(PERL_DEPENDENCIES_PROGRAM)'
+	@$(PERL) -e '$(PERL_DEPENDENCIES_PROGRAM)'
 endif
 
 #############################################################################
diff --git a/mozilla/security/nss/lib/ckfw/Makefile b/mozilla/security/nss/lib/ckfw/Makefile
index 138c4f08709..0445069c179 100644
--- a/mozilla/security/nss/lib/ckfw/Makefile
+++ b/mozilla/security/nss/lib/ckfw/Makefile
@@ -34,7 +34,7 @@
 # the terms of any one of the MPL, the GPL or the LGPL.
 #
 # ***** END LICENSE BLOCK *****
-MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.12 $ $Date: 2007-05-08 01:31:23 $"
+MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.13 $ $Date: 2007-05-09 00:09:38 $"
 
 include manifest.mn
 include $(CORE_DEPTH)/coreconf/config.mk
@@ -56,7 +56,7 @@ endif
 # nssckft.h: ck.api ckapi.perl
 # nssckg.h: ck.api ckapi.perl
 # nssck.api: ck.api ckapi.perl
-# 	perl ckapi.perl ck.api
+# 	$(PERL) ckapi.perl ck.api
 
 export:: private_export
 
diff --git a/mozilla/security/nss/lib/ckfw/builtins/Makefile b/mozilla/security/nss/lib/ckfw/builtins/Makefile
index 66de93faa96..6c7574881e2 100644
--- a/mozilla/security/nss/lib/ckfw/builtins/Makefile
+++ b/mozilla/security/nss/lib/ckfw/builtins/Makefile
@@ -34,7 +34,7 @@
 # the terms of any one of the MPL, the GPL or the LGPL.
 #
 # ***** END LICENSE BLOCK *****
-MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.18 $ $Date: 2007-05-08 01:31:23 $"
+MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.19 $ $Date: 2007-05-09 00:09:38 $"
 
 include manifest.mn
 include $(CORE_DEPTH)/coreconf/config.mk
@@ -77,7 +77,7 @@ include $(CORE_DEPTH)/coreconf/rules.mk
 
 # Generate certdata.c.
 generate:
-	perl certdata.perl < certdata.txt
+	$(PERL) certdata.perl < certdata.txt
 
 # This'll need some help from a build person.
 
diff --git a/mozilla/security/nss/lib/ckfw/capi/Makefile b/mozilla/security/nss/lib/ckfw/capi/Makefile
index ddb5a570c81..241b1ebae96 100644
--- a/mozilla/security/nss/lib/ckfw/capi/Makefile
+++ b/mozilla/security/nss/lib/ckfw/capi/Makefile
@@ -34,7 +34,7 @@
 # the terms of any one of the MPL, the GPL or the LGPL.
 #
 # ***** END LICENSE BLOCK *****
-MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.4 $ $Date: 2007-05-08 01:31:23 $"
+MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.5 $ $Date: 2007-05-09 00:09:37 $"
 
 include manifest.mn
 include $(CORE_DEPTH)/coreconf/config.mk
@@ -80,7 +80,7 @@ include $(CORE_DEPTH)/coreconf/rules.mk
 
 # Generate certdata.c.
 generate:
-	perl certdata.perl < certdata.txt
+	$(PERL) certdata.perl < certdata.txt
 
 # This'll need some help from a build person.
 
diff --git a/mozilla/security/nss/lib/freebl/ecl/Makefile b/mozilla/security/nss/lib/freebl/ecl/Makefile
index 7af8d48e397..9ada3eba197 100644
--- a/mozilla/security/nss/lib/freebl/ecl/Makefile
+++ b/mozilla/security/nss/lib/freebl/ecl/Makefile
@@ -52,7 +52,7 @@
 ## might work ... I haven't tested it.
 ##
 #PERL=/usr/bin/perl
-PERL=perl
+#PERL=perl
 
 include ../mpi/target.mk
 
diff --git a/mozilla/security/nss/lib/freebl/mpi/Makefile b/mozilla/security/nss/lib/freebl/mpi/Makefile
index 6dff39c598c..4fcc400f890 100644
--- a/mozilla/security/nss/lib/freebl/mpi/Makefile
+++ b/mozilla/security/nss/lib/freebl/mpi/Makefile
@@ -41,7 +41,7 @@
 # ***** END LICENSE BLOCK *****
 
 #
-# $Id: Makefile,v 1.25 2007-05-08 01:31:22 neil.williams%sun.com Exp $
+# $Id: Makefile,v 1.26 2007-05-09 00:09:37 neil.williams%sun.com Exp $
 #
 
 ## Define CC to be the C compiler you wish to use.  The GNU cc
@@ -55,7 +55,7 @@
 ## might work ... I haven't tested it.
 ##
 #PERL=/usr/bin/perl
-PERL=perl
+#PERL=perl
 
 include target.mk
 
diff --git a/mozilla/security/nss/lib/freebl/mpi/Makefile.os2 b/mozilla/security/nss/lib/freebl/mpi/Makefile.os2
index d9f6fb1c2d3..3462344e105 100644
--- a/mozilla/security/nss/lib/freebl/mpi/Makefile.os2
+++ b/mozilla/security/nss/lib/freebl/mpi/Makefile.os2
@@ -39,7 +39,7 @@
 # ***** END LICENSE BLOCK *****
 
 #
-# $Id: Makefile.os2,v 1.5 2007-05-08 01:31:22 neil.williams%sun.com Exp $
+# $Id: Makefile.os2,v 1.6 2007-05-09 00:09:37 neil.williams%sun.com Exp $
 #
 
 ## Define CC to be the C compiler you wish to use.  The GNU cc
@@ -55,7 +55,7 @@ AS=alp.exe
 ## might work ... I haven't tested it.
 ##
 #PERL=/usr/bin/perl
-PERL=perl
+#PERL=perl
 
 ##
 ## Define CFLAGS to contain any local options your compiler
diff --git a/mozilla/security/nss/lib/freebl/mpi/Makefile.win b/mozilla/security/nss/lib/freebl/mpi/Makefile.win
index 8df1de9822d..aa0d8d2c5da 100644
--- a/mozilla/security/nss/lib/freebl/mpi/Makefile.win
+++ b/mozilla/security/nss/lib/freebl/mpi/Makefile.win
@@ -39,7 +39,7 @@
 # ***** END LICENSE BLOCK *****
 
 #
-# $Id: Makefile.win,v 1.5 2007-05-08 01:31:22 neil.williams%sun.com Exp $
+# $Id: Makefile.win,v 1.6 2007-05-09 00:09:37 neil.williams%sun.com Exp $
 #
 
 ## Define CC to be the C compiler you wish to use.  The GNU cc
@@ -55,7 +55,7 @@ AS=ml.exe
 ## might work ... I haven't tested it.
 ##
 #PERL=/usr/bin/perl
-PERL=perl
+#PERL=perl
 
 ##
 ## Define CFLAGS to contain any local options your compiler
diff --git a/mozilla/security/nss/lib/freebl/mpi/timetest b/mozilla/security/nss/lib/freebl/mpi/timetest
index 9c6f6d6bab9..9cf0671d5d7 100755
--- a/mozilla/security/nss/lib/freebl/mpi/timetest
+++ b/mozilla/security/nss/lib/freebl/mpi/timetest
@@ -44,12 +44,13 @@
 # ***** END LICENSE BLOCK *****
 
 # 
-# $Id: timetest,v 1.8 2007-05-08 01:31:22 neil.williams%sun.com Exp $
+# $Id: timetest,v 1.9 2007-05-09 00:09:37 neil.williams%sun.com Exp $
 #
 
 # Avoid using built-in shell echoes
 ECHO=/bin/echo
 MAKE=gmake
+PERL=perl
 
 # Use a fixed seed so timings will be more consistent
 # This one is the 11th-18th decimal digits of 'e'
@@ -122,7 +123,7 @@ for size in $sizes ; do
     $ECHO "- Gathering statistics for $size bits ... "
     ./primegen $size $ntests | grep ticks | awk '{print $7}' | tr -d '(' > tt$$.tmp
     $ECHO "$size:" >> timing-results.txt
-    perl stats tt$$.tmp >> timing-results.txt
+    $PERL stats tt$$.tmp >> timing-results.txt
     tail -1 timing-results.txt
     rm -f tt$$.tmp
 done
diff --git a/mozilla/security/nss/lib/pki1/Makefile b/mozilla/security/nss/lib/pki1/Makefile
index 2f9dfd3de55..5a30b79d48b 100644
--- a/mozilla/security/nss/lib/pki1/Makefile
+++ b/mozilla/security/nss/lib/pki1/Makefile
@@ -34,7 +34,7 @@
 # the terms of any one of the MPL, the GPL or the LGPL.
 #
 # ***** END LICENSE BLOCK *****
-MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.9 $ $Date: 2007-05-08 01:31:22 $"
+MAKEFILE_CVS_ID = "@(#) $RCSfile: Makefile,v $ $Revision: 1.10 $ $Date: 2007-05-09 00:09:36 $"
 
 include manifest.mn
 include $(CORE_DEPTH)/coreconf/config.mk
@@ -44,7 +44,7 @@ include $(CORE_DEPTH)/coreconf/rules.mk
 # Generate oiddata.h and oiddata.c.
 oidgen: oidgen.perl oids.txt
 	rm -f oiddata.c oiddata.h
-	perl oidgen.perl oiddata.c oiddata.h oids.txt
+	$(PERL) oidgen.perl oiddata.c oiddata.h oids.txt
 
 export::  private_export