package: cleanup PKG_CONFIG_SYSROOT

PKG_CONFIG_SYSROOT_DIR and friends get set in package/Makefile.in,
so there's no need to set it in the makefiles of the individual
packages as well.

Based on a patch by Markus Heidelberg.

package/audio/libogg/libogg.mk

@@ -24,9 +24,6 @@ $(LIBOGG_DIR)/.configured: $(LIBOGG_DIR)/.source
 		$(TARGET_CONFIGURE_ARGS) \
 		$(TARGET_CONFIGURE_OPTS) \
 		CFLAGS="$(TARGET_CFLAGS)" \
-		PKG_CONFIG_PATH="$(STAGING_DIR)/lib/pkconfig:$(STAGING_DIR)/usr/lib/pkgconfig" \
-		PKG_CONFIG="$(STAGING_DIR)/usr/bin/pkg-config" \
-		PKG_CONFIG_SYSROOT=$(STAGING_DIR) \
 		./configure \
 		--target=$(GNU_TARGET_NAME) \
 		--host=$(GNU_TARGET_NAME) \

package/audio/libvorbis/libvorbis.mk

@@ -23,9 +23,6 @@ $(LIBVORBIS_DIR)/.configured: $(LIBVORBIS_DIR)/.source
 		$(TARGET_CONFIGURE_ARGS) \
 		$(TARGET_CONFIGURE_OPTS) \
 		CFLAGS="$(TARGET_CFLAGS)" \
-		PKG_CONFIG_PATH="$(STAGING_DIR)/lib/pkconfig:$(STAGING_DIR)/usr/lib/pkgconfig" \
-		PKG_CONFIG="$(STAGING_DIR)/usr/bin/pkg-config" \
-		PKG_CONFIG_SYSROOT=$(STAGING_DIR) \
 		./configure \
 		--target=$(GNU_TARGET_NAME) \
 		--host=$(GNU_TARGET_NAME) \

package/docker/docker.mk

@@ -14,10 +14,7 @@ DOCKER_MAKE_OPT = CC=$(TARGET_CC) CXX=$(TARGET_CXX) LD=$(TARGET_LD) \
 					CFLAGS="-I$(STAGING_DIR)/usr/include \
 						-I$(STAGING_DIR)/usr/include/glib-2.0 \
 						-I$(STAGING_DIR)/usr/lib/glib-2.0/include" \
-					LDFLAGS="-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib" \
-					PKGCONFIG="$(STAGING_DIR)/usr/bin/pkg-config" \
-					PKG_CONFIG_SYSROOT="$(STAGING_DIR)" \
-					PKG_CONFIG_PATH="$(STAGING_DIR)/usr/lib/pkgconfig"
+					LDFLAGS="-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib"
 
 DOCKER_INSTALL_TARGET_OPT = PREFIX=$(TARGET_DIR)/usr install
 

package/editors/vim/vim.mk

@@ -36,14 +36,8 @@ $(VIM_DIR)/.patched: $(VIM_DIR)/.unpacked
 
 $(VIM_DIR)/.configured: $(VIM_DIR)/.patched
 	(cd $(VIM_DIR)/src; \
-		PATH=$(TARGET_PATH) \
-		CC="$(TARGET_CC)" \
-		CPP="$(TARGET_CPP)" \
 		CFLAGS="$(TARGET_CFLAGS)" \
 		STRIP="$(TARGET_STRIP)" \
-		PKG_CONFIG_SYSROOT="$(STAGING_DIR)" \
-		PKG_CONFIG="$(STAGING_DIR)/usr/bin/pkg-config" \
-		PKG_CONFIG_PATH="$(STAGING_DIR)/usr/lib/pkgconfig:$(PKG_CONFIG_PATH)" \
 		PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \
 		PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \
         $(TARGET_CONFIGURE_ARGS) \