wireless_tools: don't call ldconfig

The wireless_tools installation process calls ldconfig to update the
ld.so cache, but in a cross-compilation situation, it doesn't make
sense, and simply takes time for nothing. To avoid this, we pass
LDCONFIG=/bin/true during the wireless_tools installation steps.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/wireless_tools/wireless_tools.mk

@@ -20,7 +20,7 @@ ifeq ($(BR2_PACKAGE_WIRELESS_TOOLS_LIB),y)
 	WIRELESS_TOOLS_INSTALL_TARGETS += install-dynamic
 
 define WIRELESS_TOOLS_INSTALL_STAGING_CMDS
-	$(MAKE) -C $(@D) PREFIX="$(STAGING_DIR)" install-dynamic
+	$(MAKE) -C $(@D) PREFIX="$(STAGING_DIR)" LDCONFIG=/bin/true install-dynamic
 	$(MAKE) -C $(@D) PREFIX="$(STAGING_DIR)/usr" install-hdr
 endef
 
@@ -36,7 +36,7 @@ define WIRELESS_TOOLS_CLEAN_CMDS
 endef
 
 define WIRELESS_TOOLS_INSTALL_TARGET_CMDS
-	$(MAKE) -C $(@D) PREFIX="$(TARGET_DIR)" $(WIRELESS_TOOLS_INSTALL_TARGETS)
+	$(MAKE) -C $(@D) PREFIX="$(TARGET_DIR)" LDCONFIG=/bin/true $(WIRELESS_TOOLS_INSTALL_TARGETS)
 	$(MAKE) -C $(@D) INSTALL_MAN="$(TARGET_DIR)/usr/share/man" install-man
 endef