[source] build: define common subdir targets in rules.mk

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/6cf067d084cc551c721e98b6d6c6403a63e521d5

commit 6cf067d084cc551c721e98b6d6c6403a63e521d5
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Wed Jan 18 14:00:48 2017 +0100

    build: define common subdir targets in rules.mk
    
    Reduce build system clutter and enable further rework
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 include/host-build.mk | 17 ++++-------------
 include/package.mk    |  5 +----
 include/subdir.mk     |  2 +-
 rules.mk              |  9 +++++++++
 4 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/include/host-build.mk b/include/host-build.mk
index 6c2f915..0bd3867 100644
--- a/include/host-build.mk
+++ b/include/host-build.mk
@@ -168,13 +168,11 @@ ifndef DUMP
 		touch $(HOST_STAMP_BUILT)
 		touch $$@
 
+  $(call DefaultTargets,$(patsubst %,host-%,$(DEFAULT_SUBDIR_TARGETS)))
   ifndef STAMP_BUILT
-    prepare: host-prepare
-    compile: host-compile
-    install: host-install
-    clean: host-clean
-    update: host-update
-    refresh: host-refresh
+    $(foreach t,$(DEFAULT_SUBDIR_TARGETS),
+      $(t): host-$(t)
+    )
   endif
 
   host-prepare: $(HOST_STAMP_PREPARED)
@@ -187,13 +185,6 @@ ifndef DUMP
 	rm -rf $(HOST_BUILD_DIR) $(HOST_STAMP_INSTALLED) $(HOST_STAMP_BUILT)
 
   endef
-
-  download:
-  prepare:
-  compile:
-  install:
-  clean:
-
 endif
 
 define HostBuild
diff --git a/include/package.mk b/include/package.mk
index ea80128..62e538c 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -143,6 +143,7 @@ Build/Exports=$(Build/Exports/Default)
 define Build/CoreTargets
   $(if $(QUILT),$(Build/Quilt))
   $(call Build/Autoclean)
+  $(call DefaultTargets)
 
   download:
 	$(foreach hook,$(Hooks/Download),
@@ -287,10 +288,6 @@ prepare-package-install:
 $(PACKAGE_DIR):
 	mkdir -p $@
 
-dumpinfo:
-download:
-prepare:
-configure:
 compile: prepare-package-install
 install: compile
 
diff --git a/include/subdir.mk b/include/subdir.mk
index 10476d3..7e0c474 100644
--- a/include/subdir.mk
+++ b/include/subdir.mk
@@ -9,7 +9,7 @@ ifeq ($(MAKECMDGOALS),prereq)
   SUBTARGETS:=prereq
   PREREQ_ONLY:=1
 else
-  SUBTARGETS:=clean download prepare compile install update refresh prereq dist distcheck configure check
+  SUBTARGETS:=$(DEFAULT_SUBDIR_TARGETS)
 endif
 
 subtarget-default = $(filter-out ., \
diff --git a/rules.mk b/rules.mk
index 95b18f9..e54acc9 100644
--- a/rules.mk
+++ b/rules.mk
@@ -101,6 +101,15 @@ ifdef CONFIG_MIPS64_ABI
   endif
 endif
 
+DEFAULT_SUBDIR_TARGETS:=clean download prepare compile install update refresh prereq dist distcheck configure check
+
+define DefaultTargets
+$(foreach t,$(DEFAULT_SUBDIR_TARGETS),
+  $(t):
+  .PHONY: $(t)
+)
+endef
+
 DL_DIR:=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)
 OUTPUT_DIR:=$(if $(call qstrip,$(CONFIG_BINARY_FOLDER)),$(call qstrip,$(CONFIG_BINARY_FOLDER)),$(TOPDIR)/bin)
 BIN_DIR:=$(OUTPUT_DIR)/targets/$(BOARD)/$(SUBTARGET)