diff --git a/mozilla/build/nsprenv.mk.in b/mozilla/build/nsprenv.mk.in
new file mode 100644
index 00000000000..45c08a5672c
--- /dev/null
+++ b/mozilla/build/nsprenv.mk.in
@@ -0,0 +1,6 @@
+export USE_PTHREADS=@MOZ_NSPRENV_USE_PTHREADS@
+export BUILD_OPT=@MOZ_NSPRENV_BUILD_OPT@
+export NS_USE_GCC=@MOZ_NSPRENV_NS_USE_GCC@
+export NO_MDUPDATE=@MOZ_NSPRENV_NO_MDUPDATE@
+export NS_USE_NATIVE=@MOZ_NSPRENV_NS_USE_NATIVE@
+export MOZILLA_CLIENT=@MOZ_NSPRENV_MOZILLA_CLIENT@