--- a/a/nspr/config/autoconf.mk.in
+++ a/a/nspr/config/autoconf.mk.in
@@ -67,7 +67,7 @@
 MSC_VER		= @MSC_VER@
 AR		= @AR@
 AR_FLAGS	= @AR_FLAGS@
-LD		= @LD@
+LD		= echo
 RANLIB		= @RANLIB@
 PERL		= @PERL@
 RC		= @RC@
--- a/a/nspr/configure
+++ a/a/nspr/configure
@@ -755,7 +755,7 @@
 OBJDIR='$(OBJDIR_NAME)'
 OBJDIR_NAME=.
 OBJDIR_SUFFIX=OBJ
-NSINSTALL='$(MOD_DEPTH)/config/$(OBJDIR_NAME)/nsinstall'
+NSINSTALL=${NSINSTALL?'$(MOD_DEPTH)/config/$(OBJDIR_NAME)/nsinstall'}
 NOSUCHFILE=/no-such-file
 LIBNSPR='-L$(dist_libdir) -lnspr$(MOD_MAJOR_VERSION)'
 LIBPLC='-L$(dist_libdir) -lplc$(MOD_MAJOR_VERSION)'
@@ -3060,7 +3060,7 @@
 LIB_SUFFIX=a
 DLL_SUFFIX=so
 ASM_SUFFIX=s
-MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
+MKSHLIB='touch $@; echo'
 PR_MD_ASFILES=
 PR_MD_CSRCS=
 PR_MD_ARCH_DIR=unix
@@ -3904,7 +3904,7 @@
     DSO_CFLAGS=-fPIC
     DSO_LDOPTS='-dynamiclib -compatibility_version 1 -current_version 1 -all_load -install_name @__________________________________________________OOO/$@ -headerpad_max_install_names'
     _OPTIMIZE_FLAGS=-O2
-    MKSHLIB='$(CC) $(DSO_LDOPTS) -o $@'
+    MKSHLIB=touch $@
     STRIP="$STRIP -x -S"
     DLL_SUFFIX=dylib
     USE_PTHREADS=1
--- a/a/nss/coreconf/ruleset.mk
+++ a/a/nss/coreconf/ruleset.mk
@@ -68,7 +68,7 @@
 endif
 
 ifeq ($(MKPROG),)
-    MKPROG = $(CC)
+    MKPROG = touch $@; echo
 endif
 
 #
--- a/a/nss/coreconf/Darwin.mk
+++ a/a/nss/coreconf/Darwin.mk
@@ -124,7 +124,7 @@
    DSO_LDOPTS += --coverage
 endif
 
-MKSHLIB		= $(CC) $(DSO_LDOPTS) $(DARWIN_SDK_SHLIBFLAGS)
+MKSHLIB		= touch $@; echo
 DLL_SUFFIX	= dylib
 ifdef MAPFILE
 	MKSHLIB += -exported_symbols_list $(MAPFILE)
--- a/a/nss/coreconf/UNIX.mk
+++ a/a/nss/coreconf/UNIX.mk
@@ -21,10 +21,14 @@
 
 ifdef BUILD_TREE
 NSINSTALL_DIR  = $(BUILD_TREE)/nss
+ifndef NSINSTALL
 NSINSTALL      = $(BUILD_TREE)/nss/nsinstall
+endif
 else
 NSINSTALL_DIR  = $(CORE_DEPTH)/coreconf/nsinstall
+ifndef NSINSTALL
 NSINSTALL      = $(NSINSTALL_DIR)/$(OBJDIR_NAME)/nsinstall
+endif
 endif
 
 MKDEPEND_DIR    = $(CORE_DEPTH)/coreconf/mkdepend
--- a/a/nspr/pr/include/md/_darwin.h
+++ a/a/nspr/pr/include/md/_darwin.h
@@ -26,6 +26,8 @@
 #define _PR_SI_ARCHITECTURE "ppc"
 #elif defined(__arm__)
 #define _PR_SI_ARCHITECTURE "arm"
+#elif defined(__arm64__)
+#define _PR_SI_ARCHITECTURE "arm64"
 #elif defined(__aarch64__)
 #define _PR_SI_ARCHITECTURE "aarch64"
 #else
--- a/a/nspr/pr/src/Makefile.in
+++ a/a/nspr/pr/src/Makefile.in
@@ -180,7 +180,7 @@
 endif
 
 ifeq ($(OS_TARGET),MacOSX)
-OS_LIBS		= -framework CoreServices -framework CoreFoundation
+OS_LIBS		= -framework CoreFoundation
 endif
 
 EXTRA_LIBS += $(OS_LIBS)
--- a/a/nss/cmd/shlibsign/sign.sh
+++ a/a/nss/cmd/shlibsign/sign.sh
@@ -2,6 +2,8 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+exit 0
 
 # arguments:
 # 1: full path to DIST/OBJDIR (parent dir of "lib")