From bfc0ff6ba89bf56c770bc9dc9ec6f397249c4255 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 3 Apr 2011 02:15:56 +0000
Subject: [PATCH] build: do not use shell calls to export empty opkg control
 files, speeds up package build and fixes some "Argument list too long" errors
 (backport of r26431)

git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@26433 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 include/package-ipkg.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/package-ipkg.mk b/include/package-ipkg.mk
index 85f5c7c26..0dd398e1b 100644
--- a/include/package-ipkg.mk
+++ b/include/package-ipkg.mk
@@ -28,8 +28,10 @@ IPKG_BUILD:= \
 IPKG_STATE_DIR:=$(TARGET_DIR)/usr/lib/opkg
 
 define BuildIPKGVariable
+ifdef Package/$(1)/$(2)
   $(call shexport,Package/$(1)/$(2))
   $(1)_COMMANDS += var2file "$(call shvar,Package/$(1)/$(2))" $(2);
+endif
 endef
 
 PARENL :=(