build system refactoring in preparation for allowing packages to do host-build steps

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14610 3c298f89-4303-0410-b956-a3cf2f4a3e73

4 files changed, 151 insertions, 118 deletions

diff --git a/include/download.mk b/include/download.mk
index 0a2dd3c03f..811c42a3c3 100644
--- a/include/download.mk
+++ b/include/download.mk
@@ -5,7 +5,7 @@
 # See /LICENSE for more information.
 #
 
-DOWNLOAD_RDEP:=$(STAMP_PREPARED)
+DOWNLOAD_RDEP:=$(STAMP_PREPARED) $(HOST_STAMP_PREPARED)
 
 # Try to guess the download method from the URL
 define dl_method 
diff --git a/include/host-build.mk b/include/host-build.mk
index 5622e98707..fdba1b36cb 100644
--- a/include/host-build.mk
+++ b/include/host-build.mk
@@ -5,40 +5,40 @@
 # See /LICENSE for more information.
 #
 
-PKG_BUILD_DIR ?= $(BUILD_DIR_HOST)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
-PKG_INSTALL_DIR ?= $(PKG_BUILD_DIR)/host-install
+HOST_BUILD_DIR ?= $(BUILD_DIR_HOST)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
+PKG_INSTALL_DIR ?= $(HOST_BUILD_DIR)/host-install
 
 include $(INCLUDE_DIR)/host.mk
 include $(INCLUDE_DIR)/unpack.mk
 include $(INCLUDE_DIR)/depends.mk
 
-STAMP_PREPARED=$(PKG_BUILD_DIR)/.prepared$(if $(QUILT)$(DUMP),,$(shell $(call find_md5,${CURDIR} $(PKG_FILE_DEPEND),)))
-STAMP_CONFIGURED:=$(PKG_BUILD_DIR)/.configured
-STAMP_BUILT:=$(PKG_BUILD_DIR)/.built
-STAMP_INSTALLED:=$(STAGING_DIR_HOST)/stamp/.$(PKG_NAME)_installed
+HOST_STAMP_PREPARED=$(HOST_BUILD_DIR)/.prepared$(if $(QUILT)$(DUMP),,$(shell $(call find_md5,${CURDIR} $(PKG_FILE_DEPEND),)))
+HOST_STAMP_CONFIGURED:=$(HOST_BUILD_DIR)/.configured
+HOST_STAMP_BUILT:=$(HOST_BUILD_DIR)/.built
+HOST_STAMP_INSTALLED:=$(STAGING_DIR_HOST)/stamp/.$(PKG_NAME)_installed
 
 override MAKEFLAGS=
 
 include $(INCLUDE_DIR)/download.mk
 include $(INCLUDE_DIR)/quilt.mk
 
-Build/Patch:=$(Build/Patch/Default)
-ifneq ($(strip $(PKG_UNPACK)),)
-  define Build/Prepare/Default
-  	$(PKG_UNPACK)
-	$(Build/Patch)
-	$(if $(QUILT),touch $(PKG_BUILD_DIR)/.quilt_used)
+Host/Patch:=$(Host/Patch/Default)
+ifneq ($(strip $(HOST_UNPACK)),)
+  define Host/Prepare/Default
+  	$(HOST_UNPACK)
+	$(Host/Patch)
+	$(if $(QUILT),touch $(HOST_BUILD_DIR)/.quilt_used)
   endef
 endif
 
-define Build/Prepare
-  $(call Build/Prepare/Default)
+define Host/Prepare
+  $(call Host/Prepare/Default)
 endef
 
-define Build/Configure/Default
-	@(cd $(PKG_BUILD_DIR)/$(3); \
+define Host/Configure/Default
+	@(cd $(HOST_BUILD_DIR)/$(3); \
 	[ -x configure ] && \
-		$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(PKG_BUILD_DIR)/$(3)/ && \
+		$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_BUILD_DIR)/$(3)/ && \
 		$(2) \
 		CPPFLAGS="$(HOST_CFLAGS)" \
 		LDFLAGS="$(HOST_LDFLAGS)" \
@@ -59,22 +59,22 @@ define Build/Configure/Default
 	)
 endef
 
-define Build/Configure
-  $(call Build/Configure/Default)
+define Host/Configure
+  $(call Host/Configure/Default)
 endef
 
-define Build/Compile/Default
-	$(MAKE) -C $(PKG_BUILD_DIR) $(1)
+define Host/Compile/Default
+	$(MAKE) -C $(HOST_BUILD_DIR) $(1)
 endef
 
-define Build/Compile
-  $(call Build/Compile/Default)
+define Host/Compile
+  $(call Host/Compile/Default)
 endef
 
 ifneq ($(if $(QUILT),,$(CONFIG_AUTOREBUILD)),)
-  define HostBuild/Autoclean
-    $(call rdep,${CURDIR} $(PKG_FILE_DEPEND),$(STAMP_PREPARED))
-    $(if $(if $(Build/Compile),$(filter prepare,$(MAKECMDGOALS)),1),,$(call rdep,$(PKG_BUILD_DIR),$(STAMP_BUILT)))
+  define HostHost/Autoclean
+    $(call rdep,${CURDIR} $(PKG_FILE_DEPEND),$(HOST_STAMP_PREPARED))
+    $(if $(if $(Host/Compile),$(filter prepare,$(MAKECMDGOALS)),1),,$(call rdep,$(HOST_BUILD_DIR),$(HOST_STAMP_BUILT)))
   endef
 endif
 
@@ -88,45 +88,45 @@ define Download/default
 endef
 
 define HostBuild
-  $(if $(QUILT),$(Build/Quilt))
+  $(if $(QUILT),$(Host/Quilt))
   $(if $(strip $(PKG_SOURCE_URL)),$(call Download,default))
-  $(if $(DUMP),,$(call HostBuild/Autoclean))
+  $(if $(DUMP),,$(call HostHost/Autoclean))
   
-  $(STAMP_PREPARED):
-	@-rm -rf $(PKG_BUILD_DIR)
-	@mkdir -p $(PKG_BUILD_DIR)
-	$(call Build/Prepare)
+  $(HOST_STAMP_PREPARED):
+	@-rm -rf $(HOST_BUILD_DIR)
+	@mkdir -p $(HOST_BUILD_DIR)
+	$(call Host/Prepare)
 	touch $$@
 
-  $(STAMP_CONFIGURED): $(STAMP_PREPARED)
-	$(call Build/Configure)
+  $(HOST_STAMP_CONFIGURED): $(HOST_STAMP_PREPARED)
+	$(call Host/Configure)
 	touch $$@
 
-  $(STAMP_BUILT): $(STAMP_CONFIGURED)
-	$(call Build/Compile)
+  $(HOST_STAMP_BUILT): $(HOST_STAMP_CONFIGURED)
+	$(call Host/Compile)
 	touch $$@
 
-  $(STAMP_INSTALLED): $(STAMP_BUILT)
-	$(call Build/Install)
+  $(HOST_STAMP_INSTALLED): $(HOST_STAMP_BUILT)
+	$(call Host/Install)
 	mkdir -p $$(shell dirname $$@)
 	touch $$@
 	
-  ifdef Build/Install
-    install: $(STAMP_INSTALLED)
+  ifdef Host/Install
+    install: $(HOST_STAMP_INSTALLED)
   endif
 
   package-clean: FORCE
-	$(call Build/Clean)
-	$(call Build/Uninstall)
-	rm -f $(STAMP_INSTALLED) $(STAMP_BUILT)
+	$(call Host/Clean)
+	$(call Host/Uninstall)
+	rm -f $(HOST_STAMP_INSTALLED) $(HOST_STAMP_BUILT)
 
   download:
-  prepare: $(STAMP_PREPARED)
-  configure: $(STAMP_CONFIGURED)
-  compile: $(STAMP_BUILT)
+  prepare: $(HOST_STAMP_PREPARED)
+  configure: $(HOST_STAMP_CONFIGURED)
+  compile: $(HOST_STAMP_BUILT)
   install:
   clean: FORCE
-	$(call Build/Clean)
-	rm -rf $(PKG_BUILD_DIR)
+	$(call Host/Clean)
+	rm -rf $(HOST_BUILD_DIR)
 
 endef
diff --git a/include/quilt.mk b/include/quilt.mk
index fb8efacaa7..358b64ba0a 100644
--- a/include/quilt.mk
+++ b/include/quilt.mk
@@ -25,47 +25,65 @@ sed -e s,\\\#.*,, $(1) | grep -E \[a-zA-Z0-9\]
 endef
 
 define PatchDir/Quilt
-	@if [ -s $(1)/series ]; then \
-		mkdir -p $(PKG_BUILD_DIR)/patches/$(2); \
-		cp $(1)/series $(PKG_BUILD_DIR)/patches/$(2); \
+	@if [ -s "$(2)/series" ]; then \
+		mkdir -p "$(1)/patches/$(3)"; \
+		cp "$(2)/series" "$(1)/patches/$(3)"; \
 	fi
-	@for patch in $$$$( (cd $(1) && if [ -f series ]; then $(call filter_series,series); else ls; fi; ) 2>/dev/null ); do ( \
-		cp "$(1)/$$$$patch" $(PKG_BUILD_DIR); \
-		cd $(PKG_BUILD_DIR); \
-		$(QUILT_CMD) import -P$(2)$$$$patch -p 1 "$$$$patch"; \
+	@for patch in $$$$( (cd "$(2)" && if [ -f series ]; then $(call filter_series,series); else ls; fi; ) 2>/dev/null ); do ( \
+		cp "$(2)/$$$$patch" "$(1)"; \
+		cd "$(1)"; \
+		$(QUILT_CMD) import -P$(3)$$$$patch -p 1 "$$$$patch"; \
 		$(QUILT_CMD) push -f >/dev/null 2>/dev/null; \
 		rm -f "$$$$patch"; \
 	); done
-	$(if $(2),@echo $(2) >> $(PKG_BUILD_DIR)/patches/.subdirs)
+	$(if $(3),@echo $(3) >> "$(1)/patches/.subdirs")
 endef
 
 define PatchDir/Default
-	@if [ -d "$(1)" -a "$$$$(ls $(1) | wc -l)" -gt 0 ]; then \
-		if [ -s "$(1)/series" ]; then \
-			$(call filter_series,$(1)/series) | xargs -n1 \
-				$(PATCH) $(PKG_BUILD_DIR) "$(1)"; \
+	@if [ -d "$(2)" -a "$$$$(ls $(2) | wc -l)" -gt 0 ]; then \
+		if [ -s "$(2)/series" ]; then \
+			$(call filter_series,$(2)/series) | xargs -n1 \
+				$(PATCH) "$(1)" "$(2)"; \
 		else \
-			$(PATCH) $(PKG_BUILD_DIR) "$(1)"; \
+			$(PATCH) "$(1)" "$(2)"; \
 		fi; \
 	fi
 endef
 
 define PatchDir
-$(call PatchDir/$(if $(strip $(QUILT)),Quilt,Default),$(strip $(1)),$(strip $(2)))
+$(call PatchDir/$(if $(strip $(QUILT)),Quilt,Default),$(strip $(1)),$(strip $(2)),$(strip $(3)))
 endef
 
-QUILT?=$(strip $(shell test -f $(PKG_BUILD_DIR)/.quilt_used && echo y))
-ifneq ($(QUILT),)
-  STAMP_PATCHED:=$(PKG_BUILD_DIR)/.quilt_patched
-  STAMP_CHECKED:=$(PKG_BUILD_DIR)/.quilt_checked
-  override CONFIG_AUTOREBUILD=
-  prepare: $(STAMP_PATCHED)
-  quilt-check: $(STAMP_CHECKED)
+ifneq ($(PKG_BUILD_DIR),)
+  QUILT?=$(strip $(shell test -f $(PKG_BUILD_DIR)/.quilt_used && echo y))
+  ifneq ($(QUILT),)
+    STAMP_PATCHED:=$(PKG_BUILD_DIR)/.quilt_patched
+    STAMP_CHECKED:=$(PKG_BUILD_DIR)/.quilt_checked
+    override CONFIG_AUTOREBUILD=
+    prepare: $(STAMP_PATCHED)
+    quilt-check: $(STAMP_CHECKED)
+  endif
 endif
 
+ifneq ($(HOST_BUILD_DIR),)
+  HOST_QUILT?=$(strip $(shell test -f $(if $(PKG_BUILD_DIR),$(PKG_BUILD_DIR),$(HOST_BUILD_DIR))/.quilt_used && echo y))
+  ifneq ($(HOST_QUILT),)
+    HOST_STAMP_PATCHED:=$(HOST_BUILD_DIR)/.quilt_patched
+    HOST_STAMP_CHECKED:=$(HOST_BUILD_DIR)/.quilt_checked
+    override CONFIG_AUTOREBUILD=
+    host-prepare: $(HOST_STAMP_PATCHED)
+    host-quilt-check: $(HOST_STAMP_CHECKED)
+  endif
+endif
+
+define Host/Patch/Default
+	$(if $(QUILT),rm -rf $(HOST_BUILD_DIR)/patches; mkdir -p $(HOST_BUILD_DIR)/patches)
+	$(call PatchDir,$(HOST_BUILD_DIR),$(PATCH_DIR),)
+endef
+
 define Build/Patch/Default
 	$(if $(QUILT),rm -rf $(PKG_BUILD_DIR)/patches; mkdir -p $(PKG_BUILD_DIR)/patches)
-	$(call PatchDir,$(PATCH_DIR),)
+	$(call PatchDir,$(PKG_BUILD_DIR),$(PATCH_DIR),)
 endef
 
 kernel_files=$(foreach fdir,$(GENERIC_FILES_DIR) $(FILES_DIR),$(fdir)/.)
@@ -73,22 +91,26 @@ define Kernel/Patch/Default
 	rm -rf $(PKG_BUILD_DIR)/patches; mkdir -p $(PKG_BUILD_DIR)/patches
 	$(if $(kernel_files),$(CP) $(kernel_files) $(LINUX_DIR)/)
 	find $(LINUX_DIR)/ -name \*.rej -or -name \*.orig | $(XARGS) rm -f
-	$(call PatchDir,$(GENERIC_PATCH_DIR),generic/)
-	$(call PatchDir,$(PATCH_DIR),platform/)
+	$(call PatchDir,$(PKG_BUILD_DIR),$(GENERIC_PATCH_DIR),generic/)
+	$(call PatchDir,$(PKG_BUILD_DIR),$(PATCH_DIR),platform/)
 endef
 
 define Quilt/RefreshDir
-	mkdir -p $(1)
-	-rm -f $(1)/* 2>/dev/null >/dev/null
+	mkdir -p $(2)
+	-rm -f $(2)/* 2>/dev/null >/dev/null
 	@( \
-		for patch in $$$$($(if $(2),grep "^$(2)",cat) $(PKG_BUILD_DIR)/patches/series | awk '{print $$$$1}'); do \
-			$(CP) -v "$(PKG_BUILD_DIR)/patches/$$$$patch" $(1); \
+		for patch in $$$$($(if $(3),grep "^$(3)",cat) $(PKG_BUILD_DIR)/patches/series | awk '{print $$$$1}'); do \
+			$(CP) -v "$(PKG_BUILD_DIR)/patches/$$$$patch" $(2); \
 		done; \
 	)
 endef
 
+define Quilt/Refresh/Host
+	$(call Quilt/RefreshDir,$(HOST_BUILD_DIR),$(PATCH_DIR))
+endef
+
 define Quilt/Refresh/Package
-	$(call Quilt/RefreshDir,$(PATCH_DIR))
+	$(call Quilt/RefreshDir,$(PKG_BUILD_DIR),$(PATCH_DIR))
 endef
 
 define Quilt/Refresh/Kernel
@@ -96,18 +118,14 @@ define Quilt/Refresh/Kernel
 		echo "All kernel patches must start with either generic/ or platform/"; \
 		false; \
 	}
-	$(call Quilt/RefreshDir,$(GENERIC_PATCH_DIR),generic/)
-	$(call Quilt/RefreshDir,$(PATCH_DIR),platform/)
-endef
-
-define Quilt/Refresh
-$(if $(TARGET_BUILD),$(Quilt/Refresh/Kernel),$(Quilt/Refresh/Package))
+	$(call Quilt/RefreshDir,$(PKG_BUILD_DIR),$(GENERIC_PATCH_DIR),generic/)
+	$(call Quilt/RefreshDir,$(PKG_BUILD_DIR),$(PATCH_DIR),platform/)
 endef
 
 define Build/Quilt
-  $(STAMP_PATCHED): $(STAMP_PREPARED)
+  $($(2)STAMP_PATCHED): $($(2)STAMP_PREPARED)
 	@( \
-		cd $(PKG_BUILD_DIR)/patches; \
+		cd $(1)/patches; \
 		$(QUILT_CMD) pop -a -f >/dev/null 2>/dev/null; \
 		if [ -s ".subdirs" ]; then \
 			rm -f series; \
@@ -124,36 +142,47 @@ define Build/Quilt
 			find * -type f \! -name series | sort > series; \
 		fi; \
 	)
-	touch $$@
-
-  $(STAMP_CONFIGURED): $(STAMP_CHECKED) FORCE
-  $(STAMP_CHECKED): $(STAMP_PATCHED)
-	if [ -s "$(PKG_BUILD_DIR)/patches/series" ]; then (cd $(PKG_BUILD_DIR); if $(QUILT_CMD) next >/dev/null 2>&1; then $(QUILT_CMD) push -a; else $(QUILT_CMD) top >/dev/null 2>&1; fi); fi
-	touch $$@
+	touch "$$@"
+
+  $($(2)STAMP_CONFIGURED): $($(2)STAMP_CHECKED) FORCE
+  $($(2)STAMP_CHECKED): $($(2)STAMP_PATCHED)
+	if [ -s "$(1)/patches/series" ]; then \
+		(cd "$(1)"; \
+			if $(QUILT_CMD) next >/dev/null 2>&1; then \
+				$(QUILT_CMD) push -a; \
+			else \
+				$(QUILT_CMD) top >/dev/null 2>&1; \
+			fi \
+		); \
+	fi
+	touch "$$@"
 
-  quilt-check: $(STAMP_PREPARED) FORCE
-	@[ -f "$(PKG_BUILD_DIR)/.quilt_used" ] || { \
+  $(3)quilt-check: $($(2)STAMP_PREPARED) FORCE
+	@[ -f "$(1)/.quilt_used" ] || { \
 		echo "The source directory was not unpacked using quilt. Please rebuild with QUILT=1"; \
 		false; \
 	}
-	@[ -f "$(PKG_BUILD_DIR)/patches/series" ] || { \
+	@[ -f "$(1)/patches/series" ] || { \
 		echo "The source directory contains no quilt patches."; \
 		false; \
 	}
-	@[ -n "$$$$(ls $(PKG_BUILD_DIR)/patches/series)" -o "$$$$(cat $(PKG_BUILD_DIR)/patches/series | md5sum)" = "$$(sort $(PKG_BUILD_DIR)/patches/series | md5sum)" ] || { \
+	@[ -n "$$$$(ls $(1)/patches/series)" -o "$$$$(cat $(1)/patches/series | md5sum)" = "$$(sort $(1)/patches/series | md5sum)" ] || { \
 		echo "The patches are not sorted in the right order. Please fix."; \
 		false; \
 	}
 
-  refresh: quilt-check
-	@cd $(PKG_BUILD_DIR); $(QUILT_CMD) pop -a -f >/dev/null 2>/dev/null
-	@cd $(PKG_BUILD_DIR); while $(QUILT_CMD) next 2>/dev/null >/dev/null && $(QUILT_CMD) push; do \
+  $(3)refresh: $(3)quilt-check
+	@cd "$(1)"; $(QUILT_CMD) pop -a -f >/dev/null 2>/dev/null
+	@cd "$(1)"; while $(QUILT_CMD) next 2>/dev/null >/dev/null && $(QUILT_CMD) push; do \
 		QUILT_DIFF_OPTS="-p" $(QUILT_CMD) refresh -p ab --no-index --no-timestamps; \
 	done; ! $(QUILT_CMD) next 2>/dev/null >/dev/null
-	$(Quilt/Refresh)
+	$(Quilt/Refresh/$(4))
 	
-  update: quilt-check
-	$(Quilt/Refresh)
+  $(3)update: $(3)quilt-check
+	$(Quilt/Refresh/$(4))
 endef
 
+Build/Quilt=$(call Quilt/Template,$(PKG_BUILD_DIR),,,$(if $(TARGET_BUILD),Kernel,Package))
+Host/Quilt=$(call Quilt/Template,$(HOST_BUILD_DIR),HOST_,host-,Host)
+
 endif
diff --git a/include/unpack.mk b/include/unpack.mk
index 9b68e5dea3..ddd5fd11fe 100644
--- a/include/unpack.mk
+++ b/include/unpack.mk
@@ -11,13 +11,13 @@ ifneq ($(HOST_OS),Linux)
 else
   HOST_TAR:=$(TAR)
 endif
-TAR_CMD:=$(HOST_TAR) -C $(PKG_BUILD_DIR)/.. $(TAR_OPTIONS)
-UNZIP_CMD:=unzip -d $(PKG_BUILD_DIR)/.. $(DL_DIR)/$(PKG_SOURCE)
+TAR_CMD=$(HOST_TAR) -C $(1)/.. $(TAR_OPTIONS)
+UNZIP_CMD=unzip -d $(1)/.. $(DL_DIR)/$(PKG_SOURCE)
 
 ifeq ($(PKG_SOURCE),)
   PKG_UNPACK ?= true
 endif
-ifeq ($(strip $(PKG_UNPACK)),)
+ifeq ($(strip $(PKG_UNPACK))$(strip $(HOST_UNPACK)),)
   ifeq ($(strip $(PKG_CAT)),)
     # try to autodetect file type
     EXT:=$(call ext,$(PKG_SOURCE))
@@ -25,40 +25,44 @@ ifeq ($(strip $(PKG_UNPACK)),)
 
     ifeq ($(filter gz tgz,$(EXT)),$(EXT))
       EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
-      UNPACK:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) |
-    endif	
+      DECOMPRESS_CMD:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) |
+    endif
     ifeq ($(filter bzip2 bz2 bz tbz2 tbz,$(EXT)),$(EXT))
       EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
-      UNPACK:=bzcat $(DL_DIR)/$(PKG_SOURCE) |
+      DECOMPRESS_CMD:=bzcat $(DL_DIR)/$(PKG_SOURCE) |
     endif
     ifeq ($(filter tgz tbz tbz2,$(EXT1)),$(EXT1))
       EXT:=tar
     endif
-    UNPACK ?= cat $(DL_DIR)/$(PKG_SOURCE) |
+    DECOMPRESS_CMD ?= cat $(DL_DIR)/$(PKG_SOURCE) |
     ifeq ($(EXT),tar)
-      PKG_UNPACK:=$(UNPACK) $(TAR_CMD)
+      UNPACK_CMD=$(DECOMPRESS_CMD) $(TAR_CMD)
     endif
     ifeq ($(EXT),cpio)
-      PKG_UNPACK:=$(UNPACK) (cd $(PKG_BUILD_DIR)/..; cpio -i -d)
+      UNPACK_CMD=$(DECOMPRESS_CMD) (cd $(1)/..; cpio -i -d)
     endif
     ifeq ($(EXT),zip)
-      PKG_UNPACK:=$(UNZIP_CMD)
+      UNPACK_CMD=$(UNZIP_CMD)
     endif
   endif
- 
+
   # compatibility code for packages that set PKG_CAT
-  ifeq ($(strip $(PKG_UNPACK)),)
+  ifeq ($(strip $(UNPACK_CMD)),)
     # use existing PKG_CAT
-    PKG_UNPACK:=$(PKG_CAT) $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
+    UNPACK_CMD=$(PKG_CAT) $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
     ifeq ($(PKG_CAT),unzip)
-      PKG_UNPACK:=$(UNZIP_CMD)
+      UNPACK_CMD=$(UNZIP_CMD)
     endif
     # replace zcat with $(ZCAT), because some system don't support it properly
     ifeq ($(PKG_CAT),zcat)
-      PKG_UNPACK:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
+      UNPACK_CMD=gzip -dc $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
     endif
   endif
   ifneq ($(strip $(CRLF_WORKAROUND)),)
-    PKG_UNPACK += && find $(PKG_BUILD_DIR) -type f -print0 | xargs -0 perl -pi -e 's!\r$$$$!!g'
+    CRLF_CMD := && find $(PKG_BUILD_DIR) -type f -print0 | xargs -0 perl -pi -e 's!\r$$$$!!g'
+  else
+    CRLF_CMD :=
   endif
+  PKG_UNPACK := $(call UNPACK_CMD,$(PKG_BUILD_DIR)) $(call CRLF_CMD,$(PKG_BUILD_DIR))
+  HOST_UNPACK := $(call UNPACK_CMD,$(HOST_BUILD_DIR)) $(call CRLF_CMD,$(HOST_BUILD_DIR))
 endif