libvpx: force to use gcc as linker

libvpx excepts gcc to be used as linker. However, it respects
what is defined in LD. The problem is that LD is defined by
OpenWRT as *-ld.

Forcing the LD env for configure and make solves the problem.
Also, the patch that modified ld call to match what *-ld provides
is not needed anymore.

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>

libs/libvpx/Makefile

@@ -23,7 +23,6 @@ PKG_MAINTAINER:=Luiz Angelo Daros de Luca <luizluca@gmail.com>
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE
 
-#PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk
@@ -55,9 +54,14 @@ ifneq ($(findstring -Os,$(TARGET_CFLAGS)),)
 CONFIGURE_ARGS += --enable-small
 endif
 
+# libvpx expects gcc as linker but uses $LD if provided
+# However, OpenWRT defines LD as *-uclibc-ld and not *-gcc
 CONFIGURE_VARS += \
-    CROSS=$(GNU_TARGET_NAME)\
-    extralibs="-lc -lgcc_s"
+    CROSS=$(GNU_TARGET_NAME) \
+	LD="$(TARGET_CC)" \
+
+MAKE_FLAGS += \
+	LD="$(TARGET_CC)" \
 
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/include/vpx/

libs/libvpx/patches/001-remove_Wl.patch

@@ -1,12 +0,0 @@
---- libvpx-1.3.0/build/make/Makefile.old	2014-12-06 02:17:06.648714353 -0200
-+++ libvpx-1.3.0/build/make/Makefile	2014-12-06 02:17:16.096555499 -0200
-@@ -268,8 +268,8 @@
- $(1):
- 	$(if $(quiet),@echo "    [LD] $$@")
- 	$(qexec)$$(LD) -shared $$(LDFLAGS) \
--            -Wl,--no-undefined -Wl,-soname,$$(SONAME) \
--            -Wl,--version-script,$$(EXPORTS_FILE) -o $$@ \
-+            --no-undefined -soname $$(SONAME) \
-+            --version-script $$(EXPORTS_FILE) -o $$@ \
-             $$(filter %.o,$$^) $$(extralibs)
- endef