libvpx: Pull from upstream

source/libvpx/build/make/Makefile

 ##
 ##  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ##
 ##  Use of this source code is governed by a BSD-style license
 ##  that can be found in the LICENSE file in the root of the source
 ##  tree. An additional intellectual property rights grant can be found
 ##  in the file PATENTS.  All contributing project authors may
 ##  be found in the AUTHORS file in the root of the source tree.
 ##
 
@@ skipping 292 matching lines @@
 # for creating them.
 $(1):
         $(if $(quiet),@echo "    [LD] $$@")
         $(qexec)$$(LD) -dynamiclib $$(LDFLAGS) \
             -exported_symbols_list $$(EXPORTS_FILE) \
         -Wl,-headerpad_max_install_names,-compatibility_version,1.0,-current_version,$$(VERSION_MAJOR) \
         -o $$@ \
         $$(filter %.o,$$^) $$(extralibs)
 endef
 
+define dll_template
+# Not using a pattern rule here because we don't want to generate empty
+# archives when they are listed as a dependency in files not responsible
+# for creating them.
+$(1):
+        $(if $(quiet),@echo "    [LD] $$@")
+        $(qexec)$$(LD) -Zdll $$(LDFLAGS) \
+        -o $$@ \
+        $$(filter %.o,$$^) $$(extralibs) $$(EXPORTS_FILE)
+endef
+
+
 #
 # Get current configuration
 #
 ifneq ($(target),)
 include $(SRC_PATH_BARE)/$(target:-$(TOOLCHAIN)=).mk
 endif
 
 skip_deps := $(filter %clean,$(MAKECMDGOALS))
 skip_deps += $(findstring testdata,$(MAKECMDGOALS))
 ifeq ($(strip $(skip_deps)),)
@@ skipping 37 matching lines @@
 
 clean::
         rm -f .bins .install-bins $(BINS)
 
 LIBS=$(call enabled,LIBS)
 .libs: $(LIBS)
         @touch $@
 $(foreach lib,$(filter %_g.a,$(LIBS)),$(eval $(call archive_template,$(lib))))
 $(foreach lib,$(filter %so.$(SO_VERSION_MAJOR).$(SO_VERSION_MINOR).$(SO_VERSION_PATCH),$(LIBS)),$(eval $(call so_template,$(lib))))
 $(foreach lib,$(filter %$(SO_VERSION_MAJOR).dylib,$(LIBS)),$(eval $(call dl_template,$(lib))))
+$(foreach lib,$(filter %$(SO_VERSION_MAJOR).dll,$(LIBS)),$(eval $(call dll_template,$(lib))))
 
 INSTALL-LIBS=$(call cond_enabled,CONFIG_INSTALL_LIBS,INSTALL-LIBS)
 ifeq ($(MAKECMDGOALS),dist)
 INSTALL-LIBS+=$(call cond_enabled,CONFIG_INSTALL_LIBS,DIST-LIBS)
 endif
 .install-libs: .libs $(addprefix $(DIST_DIR)/,$(INSTALL-LIBS))
         @touch $@
 
 clean::
         rm -f .libs .install-libs $(LIBS)
@@ skipping 46 matching lines @@
 ifeq ($(CONFIG_EXTERNAL_BUILD),yes)
     BUILD_TARGETS += .projects
     INSTALL_TARGETS += .install-projects
 endif
 BUILD_TARGETS += .docs .libs .bins
 INSTALL_TARGETS += .install-docs .install-srcs .install-libs .install-bins
 all: $(BUILD_TARGETS)
 install:: $(INSTALL_TARGETS)
 dist: $(INSTALL_TARGETS)
 test::