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build system: introduce a new feature called build variants.
it allows building a package multiple times in one pass with different build dirs, based on the same build settings. replaces templating hacks like the one used in the hostapd package git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18357 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -37,6 +37,7 @@ define Package/Default
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KCONFIG:=
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BUILDONLY:=
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URL:=
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VARIANT:=
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endef
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Build/Patch:=$(Build/Patch/Default)
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@ -32,7 +32,8 @@ $(if $(MENU),Menu: $(MENU)
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)Version: $(VERSION)
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Depends: $(DEPENDS)
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Provides: $(PROVIDES)
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$(if $(PKG_BUILD_DEPENDS),Build-Depends: $(PKG_BUILD_DEPENDS)
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$(if $(VARIANT),Build-Variant: $(VARIANT)
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)$(if $(PKG_BUILD_DEPENDS),Build-Depends: $(PKG_BUILD_DEPENDS)
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)$(if $(HOST_BUILD_DEPENDS),Build-Depends/host: $(HOST_BUILD_DEPENDS)
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)$(if $(BUILD_TYPES),Build-Types: $(BUILD_TYPES)
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)Section: $(SECTION)
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@ -35,7 +35,9 @@ define subdir
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)
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$(call warn_eval,$(1)/$(bd),t,T,$(1)/$(bd)/$(target): $(if $(QUILT),,$($(1)/$(bd)/$(target)) $(call $(1)//$(target),$(1)/$(bd))))
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$(if $(BUILD_LOG),@mkdir -p $(BUILD_LOG_DIR)/$(1)/$(bd))
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+$(if $(BUILD_LOG),set -o pipefail;) $$(SUBMAKE) -C $(1)/$(bd) $(target) $(if $(BUILD_LOG),SILENT= 2>&1 | tee $(BUILD_LOG_DIR)/$(1)/$(bd)/$(target).txt) $(if $(findstring $(bd),$($(1)/builddirs-ignore-$(target))), || $(call MESSAGE, ERROR: $(1)/$(bd) failed to build.))
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$(foreach variant,$(if $(BUILD_VARIANT),$(BUILD_VARIANT),$(if $($(1)/$(bd)/variants),$($(1)/$(bd)/variants),__default)),
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+$(if $(BUILD_LOG),set -o pipefail;) $$(SUBMAKE) -C $(1)/$(bd) $(target) BUILD_VARIANT="$(filter-out __default,$(variant))" $(if $(BUILD_LOG),SILENT= 2>&1 | tee $(BUILD_LOG_DIR)/$(1)/$(bd)/$(target).txt) $(if $(findstring $(bd),$($(1)/builddirs-ignore-$(target))), || $(call MESSAGE, ERROR: $(1)/$(bd) failed to build$(if $(filter-out __default,$(variant)), (build variant: $(variant))).))
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)
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$$(if $(call debug,$(1)/$(bd),v),,.SILENT: $(1)/$(bd)/$(target))
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# legacy targets
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@ -620,6 +620,9 @@ sub gen_package_mk() {
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if ($config) {
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$pkg->{buildonly} and $config = "";
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print "package-$config += $pkg->{subdir}$pkg->{src}\n";
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if ($pkg->{variant}) {
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print "\$(curdir)/$pkg->{subdir}$pkg->{src}/variants += \$(if $config,$pkg->{variant})\n"
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}
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$pkg->{prereq} and print "prereq-$config += $pkg->{subdir}$pkg->{src}\n";
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}
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@ -112,6 +112,7 @@ sub parse_package_metadata($) {
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}
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};
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/^Depends: \s*(.+)\s*$/ and $pkg->{depends} = [ split /\s+/, $1 ];
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/^Build-Variant: \s*(\w+)\s*/ and $pkg->{variant} = $1;
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/^Build-Only: \s*(.+)\s*$/ and $pkg->{buildonly} = 1;
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/^Build-Depends: \s*(.+)\s*$/ and $pkg->{builddepends} = [ split /\s+/, $1 ];
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/^Build-Depends\/(\w+): \s*(.+)\s*$/ and $pkg->{"builddepends/$1"} = [ split /\s+/, $2 ];
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