diff options
| -rw-r--r-- | package/pkg-kconfig.mk | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/package/pkg-kconfig.mk b/package/pkg-kconfig.mk index e65c6f9970..e441548b50 100644 --- a/package/pkg-kconfig.mk +++ b/package/pkg-kconfig.mk @@ -38,8 +38,24 @@ $(2)_KCONFIG_FIXUP_CMDS ?= $(2)_KCONFIG_FRAGMENT_FILES ?= # The config file as well as the fragments could be in-tree, so before -# depending on them the package should be extracted (and patched) first +# depending on them the package should be extracted (and patched) first. +# +# Since those files only have a order-only dependency, make would treat +# any missing one as a "force" target: +# https://www.gnu.org/software/make/manual/make.html#Force-Targets +# and would forcibly any rule that depend on those files, causing a +# rebuild of the kernel each time make is called. +# +# So, we provide a recipe that checks all of those files exist, to +# overcome that standard make behaviour. +# $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES): | $(1)-patch + for f in $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES); do \ + if [ ! -f "$$$${f}" ]; then \ + printf "Kconfig fragment '%s' for '%s' does not exist\n" "$$$${f}" "$(1)"; \ + exit 1; \ + fi; \ + done # The specified source configuration file and any additional configuration file # fragments are merged together to .config, after the package has been patched. |
