image: add CONFIG_EXTRA_IMAGE_NAME

This allows an optional tag to be put in the .config file which is
included in the filename of the resulting images, so it's easier to
build images with different functionality for the same target hardware.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Link: https://github.com/openwrt/openwrt/pull/20984
Signed-off-by: Petr Štetiar <ynezz@true.cz>

diff --git a/include/image.mk b/include/image.mk
index 0fbaf66dd14c9778b78b671863ec076b0c15a838..38005b2ab2b417ba2d4dc99f2f9d69168c551a81 100644 (file)
--- a/include/image.mk
+++ b/include/image.mk
@@ -41,6 +41,9 @@ KDIR=$(KERNEL_BUILD_DIR)
 KDIR_TMP=$(KDIR)/tmp
 DTS_DIR:=$(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/dts
 
+ifeq ($(EXTRA_IMAGE_NAME),)
+EXTRA_IMAGE_NAME:=$(call qstrip,$(CONFIG_EXTRA_IMAGE_NAME))
+endif
 IMG_PREFIX_EXTRA:=$(if $(EXTRA_IMAGE_NAME),$(call sanitize,$(EXTRA_IMAGE_NAME))-)
 IMG_PREFIX_VERNUM:=$(if $(CONFIG_VERSION_FILENAMES),$(call sanitize,$(VERSION_NUMBER))-)
 IMG_PREFIX_VERCODE:=$(if $(CONFIG_VERSION_CODE_FILENAMES),$(call sanitize,$(VERSION_CODE))-)

diff --git a/package/base-files/image-config.in b/package/base-files/image-config.in
index 67ef4d415a1f343e52c3f244b8904a74eacd33df..0f71384190334d8da81a2839186206c767420dc5 100644 (file)
--- a/package/base-files/image-config.in
+++ b/package/base-files/image-config.in
@@ -5,6 +5,14 @@
 # See /LICENSE for more information.
 #
 
+config EXTRA_IMAGE_NAME
+       string
+       prompt "Extra image filename" if IMAGEOPT
+       default ""
+       help
+               Add this to the output image filenames, to distinguish between
+               different builds for the same hardware type.
+
 config TARGET_DEFAULT_LAN_IP_FROM_PREINIT
        bool "Use preinit IP configuration as default LAN IP" if IMAGEOPT
        default n