add makefile target buildroot-savedefconfig

fontamsoc · Oct 8, 2021 · 84f98bc · 84f98bc
1 parent 7f76c34
commit 84f98bc
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diff --git a/README.md b/README.md
@@ -56,6 +56,10 @@ Rebuild the Linux kernel:
 
 	make -f pu32/makefile buildroot-menuconfig
 
+Optionally save Buildroot configuration to `buildroot/configs/pu32_defconfig`:
+
+	make -f pu32/makefile buildroot-savedefconfig
+
 Rebuild Buildroot:
 
 	make -f pu32/makefile touch-buildroot pu32-build/buildroot
diff --git a/makefile b/makefile
@@ -109,6 +109,13 @@ buildroot-menuconfig:
 		make -C ${BUILDROOT_SOURCE} O=${BUILDROOT_BUILD} pu32_defconfig; fi
 	if [ -e ${BUILDROOT_BUILD} ]; then cd ${BUILDROOT_BUILD} && make menuconfig; fi
 
+buildroot-savedefconfig:
+	$(eval BUILDROOT_BUILD := "${PWD}/buildroot-build/")
+	$(eval BUILDROOT_SOURCE := "${PWD}/pu32/buildroot/")
+	if [ ! -e ${BUILDROOT_BUILD} ]; then mkdir -p ${BUILDROOT_BUILD} && cd ${BUILDROOT_BUILD} && \
+		make -C ${BUILDROOT_SOURCE} O=${BUILDROOT_BUILD} pu32_defconfig; fi
+	if [ -e ${BUILDROOT_BUILD} ]; then cd ${BUILDROOT_BUILD} && make savedefconfig; fi
+
 touch-binutils:
 	touch pu32/binutils
 touch-gcc: