[v2] build: optionally disable target name in filenames

The target/subtarget is included in all image filenames by default. This
is useful if the same profile exists in multiple targets or
developers/users want an obvious related of images to targets.

However this information can also be confusing at it adds a lengthy
string to sysupgrade images containing an information which is likely
unknown to regular users: The target/subtarget.

This commit therefore adds the new image option called
CONFIG_TARGET_FILENAMES to make the target/subtarget filename part
optional. It is ENABLED by default. To archive this the target/subtarget
is added if CONFIG_VERSIONOPT is disabled  and CONFIG_TARGET_FILENAMES
default to `y`. This keeps the current behaviour for OpenWrt &
downstream projects while making the target/subtarget inclusion still
optional.

Newly produced files would with enabled CONFIG_VERSIONOPT and disabled
CONFIG_TARGET_FILENAMES look like the following:

* openwrt-linksys_wrt3200acm-initramfs-kernel.bin
* openwrt-linksys_wrt3200acm.manifest
* openwrt-linksys_wrt3200acm-squashfs-factory.img
* openwrt-linksys_wrt3200acm-squashfs-sysupgrade.bin

ImageBuilder and SDK archive file names are generated individually and
not influenced by the option.

Signed-off-by: Paul Spooren <mail@aparcar.org>
---
v2: Make it optional and keep everything as it is right now by default.

 include/image.mk                   | 13 +++++++++----
 package/base-files/image-config.in | 11 +++++++++++
 2 files changed, 20 insertions(+), 4 deletions(-)

The PKG_RELEASE must be bumped which I forgot in this patch!

On 22.08.20 22:23, Paul Spooren wrote:
> The target/subtarget is included in all image filenames by default. This
> is useful if the same profile exists in multiple targets or
> developers/users want an obvious related of images to targets.
>
> However this information can also be confusing at it adds a lengthy
> string to sysupgrade images containing an information which is likely
> unknown to regular users: The target/subtarget.
>
> This commit therefore adds the new image option called
> CONFIG_TARGET_FILENAMES to make the target/subtarget filename part
> optional. It is ENABLED by default. To archive this the target/subtarget
> is added if CONFIG_VERSIONOPT is disabled  and CONFIG_TARGET_FILENAMES
> default to `y`. This keeps the current behaviour for OpenWrt &
> downstream projects while making the target/subtarget inclusion still
> optional.
>
> Newly produced files would with enabled CONFIG_VERSIONOPT and disabled
> CONFIG_TARGET_FILENAMES look like the following:
>
> * openwrt-linksys_wrt3200acm-initramfs-kernel.bin
> * openwrt-linksys_wrt3200acm.manifest
> * openwrt-linksys_wrt3200acm-squashfs-factory.img
> * openwrt-linksys_wrt3200acm-squashfs-sysupgrade.bin
>
> ImageBuilder and SDK archive file names are generated individually and
> not influenced by the option.
>
> Signed-off-by: Paul Spooren <mail@aparcar.org>
> ---
> v2: Make it optional and keep everything as it is right now by default.
>
>   include/image.mk                   | 13 +++++++++----
>   package/base-files/image-config.in | 11 +++++++++++
>   2 files changed, 20 insertions(+), 4 deletions(-)
>
> diff --git a/include/image.mk b/include/image.mk
> index e8c2cf7100..989cc44699 100644
> --- a/include/image.mk
> +++ b/include/image.mk
> @@ -37,11 +37,16 @@ KDIR=$(KERNEL_BUILD_DIR)
>   KDIR_TMP=$(KDIR)/tmp
>   DTS_DIR:=$(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/dts
>   
> +ifdef CONFIG_VERSIONOPT
> +  IMG_PREFIX_TARGET:=$(if $(CONFIG_TARGET_FILENAMES),$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))-)
> +else
> +  IMG_PREFIX_TARGET:=$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))-
> +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,$(VERSION_CODE))-)
>   
> -IMG_PREFIX:=$(VERSION_DIST_SANITIZED)-$(IMG_PREFIX_VERNUM)$(IMG_PREFIX_VERCODE)$(IMG_PREFIX_EXTRA)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))
> +IMG_PREFIX:=$(VERSION_DIST_SANITIZED)-$(IMG_PREFIX_VERNUM)$(IMG_PREFIX_VERCODE)$(IMG_PREFIX_EXTRA)$(IMG_PREFIX_TARGET)
>   IMG_ROOTFS:=$(IMG_PREFIX)-rootfs
>   IMG_COMBINED:=$(IMG_PREFIX)-combined
>   IMG_PART_SIGNATURE:=$(shell echo $(SOURCE_DATE_EPOCH)$(LINUX_VERMAGIC) | mkhash md5 | cut -b1-8)
> @@ -293,7 +298,7 @@ endef
>   
>   define Image/Manifest
>   	$(call opkg,$(TARGET_DIR_ORIG)) list-installed > \
> -		$(BIN_DIR)/$(IMG_PREFIX)$(if $(PROFILE_SANITIZED),-$(PROFILE_SANITIZED)).manifest
> +		$(BIN_DIR)/$(IMG_PREFIX)$(if $(PROFILE_SANITIZED),$(PROFILE_SANITIZED)).manifest
>   endef
>   
>   define Image/gzip-ext4-padded-squashfs
> @@ -317,7 +322,7 @@ ifdef CONFIG_TARGET_ROOTFS_TARGZ
>     define Image/Build/targz
>   	$(TAR) -cp --numeric-owner --owner=0 --group=0 --mode=a-s --sort=name \
>   		$(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)") \
> -		-C $(TARGET_DIR)/ . | gzip -9n > $(BIN_DIR)/$(IMG_PREFIX)$(if $(PROFILE_SANITIZED),-$(PROFILE_SANITIZED))-rootfs.tar.gz
> +		-C $(TARGET_DIR)/ . | gzip -9n > $(BIN_DIR)/$(IMG_PREFIX)$(if $(PROFILE_SANITIZED),$(PROFILE_SANITIZED))-rootfs.tar.gz
>     endef
>   endif
>   
> @@ -385,7 +390,7 @@ define Device/Init
>   
>     IMAGES :=
>     ARTIFACTS :=
> -  IMAGE_PREFIX := $(IMG_PREFIX)-$(1)
> +  IMAGE_PREFIX := $(IMG_PREFIX)$(1)
>     IMAGE_NAME = $$(IMAGE_PREFIX)-$$(1)-$$(2)
>     IMAGE_SIZE :=
>     KERNEL_PREFIX = $$(IMAGE_PREFIX)
> diff --git a/package/base-files/image-config.in b/package/base-files/image-config.in
> index 3432db525a..4bace77db0 100644
> --- a/package/base-files/image-config.in
> +++ b/package/base-files/image-config.in
> @@ -256,6 +256,7 @@ if VERSIONOPT
>   			Enable this to include the version number in firmware image, SDK-
>   			and Image Builder archive file names
>   
> +
>   	config VERSION_CODE_FILENAMES
>   		bool
>   		prompt "Revision code in filenames"
> @@ -264,6 +265,16 @@ if VERSIONOPT
>   			Enable this to include the revision identifier or the configured
>   			version code into the firmware image, SDK- and Image Builder archive
>   			file names
> +
> +	config TARGET_FILENAMES
> +		bool
> +		prompt "Target and subtarget in filenames"
> +		default y
> +		help
> +			Enable this to include the target (and subtarget) in firmware image
> +			filenames. SDK and ImageBuilder archive filenames are not influenced
> +			by this option.
> +
>   endif
>   
>