diff --git a/Makefile b/Makefile
index 81c5f88258c..bfd21b729f6 100644
--- a/Makefile
+++ b/Makefile
@@ -396,17 +396,33 @@ LDFLAGS += $(call ld-option,-static)
 
 KERNELVERSION = $(VERSION_MAJOR)$(if $(VERSION_MINOR),.$(VERSION_MINOR)$(if $(PATCHLEVEL),.$(PATCHLEVEL)))$(EXTRAVERSION)
 
-export VERSION_MAJOR VERSION_MINOR PATCHLEVEL VERSION_RESERVED EXTRAVERSION
-export KERNELRELEASE KERNELVERSION
-export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC CXX
-export CPP AR NM STRIP OBJCOPY OBJDUMP GDB
-export MAKE AWK INSTALLKERNEL PERL PYTHON GENIDT GENOFFSET_H
-export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS
+exports += VERSION_MAJOR VERSION_MINOR PATCHLEVEL VERSION_RESERVED EXTRAVERSION
+exports += KERNELRELEASE KERNELVERSION
+exports += ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC CXX
+exports += CPP AR NM STRIP OBJCOPY OBJDUMP GDB
+exports += MAKE AWK INSTALLKERNEL PERL PYTHON GENIDT GENOFFSET_H
+exports += HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS
 
-export KBUILD_CPPFLAGS NOSTDINC_FLAGS ZEPHYRINCLUDE OBJCOPYFLAGS LDFLAGS
-export KBUILD_CFLAGS KBUILD_CXXFLAGS CFLAGS_GCOV KBUILD_AFLAGS AFLAGS_KERNEL
-export KBUILD_ARFLAGS
+exports += KBUILD_CPPFLAGS NOSTDINC_FLAGS ZEPHYRINCLUDE OBJCOPYFLAGS LDFLAGS
+exports += KBUILD_CFLAGS KBUILD_CXXFLAGS CFLAGS_GCOV KBUILD_AFLAGS AFLAGS_KERNEL
+exports += KBUILD_ARFLAGS
 
+# Push the exports to sub-processes
+export $(exports)
+
+# Make the exports available to third-party build systems
+PHONY += outputexports
+outputexports: Makefile.export
+Makefile.export: include/config/auto.conf FORCE
+	$(call filechk,Makefile.export)
+
+define filechk_Makefile.export
+	(echo "# file is auto-generated, do not modify !"; \
+	echo "BOARD=$(BOARD)"; \
+	echo; \
+	$(foreach e,$(exports),echo $(e)=$($e);) echo; \
+	echo "include $(O)/.config";)
+endef
 
 # Files to ignore in find ... statements