boost: cleanup

Move common staging/target bjam arguments into BOOST_OPT.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/boost/boost.mk

@@ -45,6 +45,12 @@ else
 BOOST_FLAGS += --without-icu
 endif
 
+BOOST_OPT += toolset=gcc \
+	     variant=$(if $(BR2_ENABLE_DEBUG),debug,release) \
+	     link=$(if $(BR2_PREFER_STATIC_LIB),static,shared) \
+	     runtime-link=$(if $(BR2_PREFER_STATIC_LIB),static,shared) \
+	     threading=$(if $(BR2_PACKAGE_BOOST_MULTITHREADED),multi,single)
+
 ifeq ($(BR2_PACKAGE_BOOST_LOCALE),y)
 ifeq ($(BR2_TOOLCHAIN_BUILDROOT)$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC)$(BR2_TOOLCHAIN_CTNG_uClibc),y)
 # posix backend needs monetary.h which isn't available on uClibc
@@ -54,10 +60,6 @@ endif
 BOOST_DEPENDENCIES += $(if $(BR2_ENABLE_LOCALE),,libiconv)
 endif
 
-BOOST_LINK = $(if $(BR2_PREFER_STATIC_LIB),static,shared)
-BOOST_MULTI = $(if $(BR2_PACKAGE_BOOST_MULTITHREADED),multi,single)
-BOOST_VARIANT = $(if $(BR2_ENABLE_DEBUG),debug,release)
-
 BOOST_WITHOUT_FLAGS_COMMASEPERATED += $(subst $(space),$(comma),$(strip $(BOOST_WITHOUT_FLAGS)))
 BOOST_FLAGS += $(if $(BOOST_WITHOUT_FLAGS_COMMASEPERATED), --without-libraries=$(BOOST_WITHOUT_FLAGS_COMMASEPERATED))
 
@@ -70,11 +72,6 @@ endef
 define BOOST_INSTALL_TARGET_CMDS
 	(cd $(@D) && ./b2 -q -d+2 \
 	--user-config=$(@D)/user-config.jam \
-	toolset=gcc \
-	variant=$(BOOST_VARIANT) \
-	link=$(BOOST_LINK) \
-	threading=$(BOOST_MULTI) \
-	runtime-link=$(BOOST_LINK) \
 	$(BOOST_OPT) \
 	--prefix=$(TARGET_DIR)/usr \
 	--layout=system install )
@@ -83,12 +80,7 @@ endef
 define BOOST_INSTALL_STAGING_CMDS
 	(cd $(@D) && ./bjam -d+2 \
 	--user-config=$(@D)/user-config.jam \
-	toolset=gcc \
-	variant=$(BOOST_VARIANT) \
-	link=$(BOOST_LINK) \
-	threading=$(BOOST_MULTI) \
 	$(BOOST_OPT) \
-	runtime-link=$(BOOST_LINK) \
 	--prefix=$(STAGING_DIR)/usr \
 	--layout=system install)
 endef