Remove claims of universal target support from the build system.

These targets no longer build (PPC support was removed from
libvpx). Remove the dead code and misleading help output.

BUG=https://code.google.com/p/webm/issues/detail?id=997

Change-Id: Ib35614806adeae970f3821da0d8dbcc54ab8d868

README

@@ -101,13 +101,6 @@ COMPILING THE APPLICATIONS/LIBRARIES:
     x86_64-win64-vs10
     x86_64-win64-vs11
     x86_64-win64-vs12
-    universal-darwin8-gcc
-    universal-darwin9-gcc
-    universal-darwin10-gcc
-    universal-darwin11-gcc
-    universal-darwin12-gcc
-    universal-darwin13-gcc
-    universal-darwin14-gcc
     generic-gnu
 
   The generic-gnu target, in conjunction with the CROSS environment variable,

build/make/Makefile

@@ -56,14 +56,7 @@ dist:
         fi
 endif
 
-ifneq ($(target),)
-# Normally, we want to build the filename from the target and the toolchain.
-# This disambiguates from the $(target).mk file that exists in the source tree.
-# However, the toolchain is part of the target in universal builds, so we
-# don't want to include TOOLCHAIN in that case. FAT_ARCHS is used to test
-# if we're in the universal case.
-include $(target)$(if $(FAT_ARCHS),,-$(TOOLCHAIN)).mk
-endif
+include $(target)-$(TOOLCHAIN).mk
 BUILD_ROOT?=.
 VPATH=$(SRC_PATH_BARE)
 CFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT) -I$(SRC_PATH)
@@ -313,21 +306,6 @@ $(1):
         $$(filter %.o,$$^) $$(extralibs)
 endef
 
-
-
-define lipo_lib_template
-$(1): $(addsuffix /$(1),$(FAT_ARCHS))
-	$(if $(quiet),@echo "    [LIPO] $$@")
-	$(qexec)libtool -static -o $$@ $$?
-endef
-
-define lipo_bin_template
-$(1): $(addsuffix /$(1),$(FAT_ARCHS))
-	$(if $(quiet),@echo "    [LIPO] $$@")
-	$(qexec)lipo -output $$@ -create $$?
-endef
-
-
 #
 # Get current configuration
 #

build/make/configure.sh

@@ -390,7 +390,7 @@ write_common_config_banner() {
 write_common_config_targets() {
   for t in ${all_targets}; do
     if enabled ${t}; then
-      if enabled universal || enabled child; then
+      if enabled child; then
         fwrite config.mk "ALL_TARGETS += ${t}-${toolchain}"
       else
         fwrite config.mk "ALL_TARGETS += ${t}"
@@ -647,14 +647,6 @@ process_common_toolchain() {
 
     # detect tgt_os
     case "$gcctarget" in
-      *darwin8*)
-        tgt_isa=universal
-        tgt_os=darwin8
-        ;;
-      *darwin9*)
-        tgt_isa=universal
-        tgt_os=darwin9
-        ;;
       *darwin10*)
         tgt_isa=x86_64
         tgt_os=darwin10
@@ -1215,7 +1207,7 @@ EOF
           ;;
       esac
       ;;
-    universal*|*-gcc|generic-gnu)
+    *-gcc|generic-gnu)
       link_with_cc=gcc
       enable_feature gcc
       setup_gnu_toolchain

configure

@@ -148,13 +148,6 @@ all_platforms="${all_platforms} x86_64-win64-vs9"
 all_platforms="${all_platforms} x86_64-win64-vs10"
 all_platforms="${all_platforms} x86_64-win64-vs11"
 all_platforms="${all_platforms} x86_64-win64-vs12"
-all_platforms="${all_platforms} universal-darwin8-gcc"
-all_platforms="${all_platforms} universal-darwin9-gcc"
-all_platforms="${all_platforms} universal-darwin10-gcc"
-all_platforms="${all_platforms} universal-darwin11-gcc"
-all_platforms="${all_platforms} universal-darwin12-gcc"
-all_platforms="${all_platforms} universal-darwin13-gcc"
-all_platforms="${all_platforms} universal-darwin14-gcc"
 all_platforms="${all_platforms} generic-gnu"
 
 # all_targets is a list of all targets that can be configured
@@ -436,22 +429,8 @@ post_process_cmdline() {
 
 process_targets() {
     enabled child || write_common_config_banner
-    enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
-
-    # For fat binaries, call configure recursively to configure for each
-    # binary architecture to be included.
-    if enabled universal; then
-        # Call configure (ourselves) for each subarchitecture
-        for arch in $fat_bin_archs; do
-            BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
-        done
-    fi
-
-    # The write_common_config (config.mk) logic is deferred until after the
-    # recursive calls to configure complete, because we want our universal
-    # targets to be executed last.
+    write_common_target_config_h ${BUILD_PFX}vpx_config.h
     write_common_config_targets
-    enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 
     # Calculate the default distribution name, based on the enabled features
     cf=""
@@ -596,24 +575,6 @@ EOF
 process_toolchain() {
     process_common_toolchain
 
-    # Handle universal binaries for this architecture
-    case $toolchain in
-        universal-darwin*)
-            darwin_ver=${tgt_os##darwin}
-
-            # Tiger (10.4/darwin8) brought support for x86
-            if [ $darwin_ver -ge 8 ]; then
-                fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
-            fi
-
-            # Leopard (10.5/darwin9) brought 64 bit support
-            if [ $darwin_ver -ge 9 ]; then
-                fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
-            fi
-            ;;
-    esac
-
-
     # Enable some useful compiler flags
     if enabled gcc; then
         enabled werror && check_add_cflags -Werror
@@ -701,7 +662,7 @@ process_toolchain() {
     esac
 
     # Other toolchain specific defaults
-    case $toolchain in x86*|universal*) soft_enable postproc;; esac
+    case $toolchain in x86*) soft_enable postproc;; esac
 
     if enabled postproc_visualizer; then
         enabled postproc || die "postproc_visualizer requires postproc to be enabled"

examples.mk

@@ -254,14 +254,6 @@ CODEC_EXTRA_LIBS=$(sort $(call enabled,CODEC_EXTRA_LIBS))
 $(foreach ex,$(ALL_EXAMPLES),$(eval $(notdir $(ex:.c=)).SRCS += $(ex) examples.mk))
 
 
-# If this is a universal (fat) binary, then all the subarchitectures have
-# already been built and our job is to stitch them together. The
-# BUILD_OBJS variable indicates whether we should be building
-# (compiling, linking) the library. The LIPO_OBJS variable indicates
-# that we're stitching.
-$(eval $(if $(filter universal%,$(TOOLCHAIN)),LIPO_OBJS,BUILD_OBJS):=yes)
-
-
 # Create build/install dependencies for all examples. The common case
 # is handled here. The MSVS case is handled below.
 NOT_MSVS = $(if $(CONFIG_MSVS),,yes)
@@ -269,7 +261,7 @@ DIST-BINS-$(NOT_MSVS)      += $(addprefix bin/,$(ALL_EXAMPLES:.c=$(EXE_SFX)))
 INSTALL-BINS-$(NOT_MSVS)   += $(addprefix bin/,$(UTILS:.c=$(EXE_SFX)))
 DIST-SRCS-yes              += $(ALL_SRCS)
 INSTALL-SRCS-yes           += $(UTIL_SRCS)
-OBJS-$(NOT_MSVS)           += $(if $(BUILD_OBJS),$(call objs,$(ALL_SRCS)))
+OBJS-$(NOT_MSVS)           += $(call objs,$(ALL_SRCS))
 BINS-$(NOT_MSVS)           += $(addprefix $(BUILD_PFX),$(ALL_EXAMPLES:.c=$(EXE_SFX)))
 
 
@@ -278,15 +270,11 @@ CODEC_LIB=$(if $(CONFIG_DEBUG_LIBS),vpx_g,vpx)
 SHARED_LIB_SUF=$(if $(filter darwin%,$(TGT_OS)),.dylib,.so)
 CODEC_LIB_SUF=$(if $(CONFIG_SHARED),$(SHARED_LIB_SUF),.a)
 $(foreach bin,$(BINS-yes),\
-    $(if $(BUILD_OBJS),$(eval $(bin):\
-        $(LIB_PATH)/lib$(CODEC_LIB)$(CODEC_LIB_SUF)))\
-    $(if $(BUILD_OBJS),$(eval $(call linker_template,$(bin),\
+    $(eval $(bin):$(LIB_PATH)/lib$(CODEC_LIB)$(CODEC_LIB_SUF))\
+    $(eval $(call linker_template,$(bin),\
         $(call objs,$($(notdir $(bin:$(EXE_SFX)=)).SRCS)) \
         -l$(CODEC_LIB) $(addprefix -l,$(CODEC_EXTRA_LIBS))\
-        )))\
-    $(if $(LIPO_OBJS),$(eval $(call lipo_bin_template,$(bin))))\
-    )
-
+        )))
 
 # The following pairs define a mapping of locations in the distribution
 # tree to locations in the source/build trees.

libs.mk

@@ -25,7 +25,7 @@ $$(BUILD_PFX)$(1).h: $$(SRC_PATH_BARE)/$(2)
 	@echo "    [CREATE] $$@"
 	$$(qexec)$$(SRC_PATH_BARE)/build/make/rtcd.pl --arch=$$(TGT_ISA) \
           --sym=$(1) \
-          --config=$$(CONFIG_DIR)$$(target)$$(if $$(FAT_ARCHS),,-$$(TOOLCHAIN)).mk \
+          --config=$$(CONFIG_DIR)$$(target)-$$(TOOLCHAIN).mk \
           $$(RTCD_OPTIONS) $$^ > $$@
 CLEAN-OBJS += $$(BUILD_PFX)$(1).h
 RTCD += $$(BUILD_PFX)$(1).h
@@ -34,12 +34,11 @@ endef
 CODEC_SRCS-yes += CHANGELOG
 CODEC_SRCS-yes += libs.mk
 
-# If this is a universal (fat) binary, then all the subarchitectures have
-# already been built and our job is to stitch them together. The
-# BUILD_LIBVPX variable indicates whether we should be building
-# (compiling, linking) the library. The LIPO_LIBVPX variable indicates
-# that we're stitching.
-$(eval $(if $(filter universal%,$(TOOLCHAIN)),LIPO_LIBVPX,BUILD_LIBVPX):=yes)
+# TODO(tomfinegan): Remove $BUILD_LIBVPX throughout. It's a vestigial piece of
+# universal Mac OS X build support from eons ago when universal meant fat
+# libraries containing PPC + X86. We now have build/make/iosbuild.sh that can
+# be used to build VPX.framework containing user selected targets instead.
+BUILD_LIBVPX := yes
 
 include $(SRC_PATH_BARE)/vpx/vpx_codec.mk
 CODEC_SRCS-yes += $(addprefix vpx/,$(call enabled,API_SRCS))
@@ -313,9 +312,6 @@ INSTALL_MAPS += $(LIBSUBDIR)/pkgconfig/%.pc %.pc
 CLEAN-OBJS += vpx.pc
 endif
 
-LIBS-$(LIPO_LIBVPX) += libvpx.a
-$(eval $(if $(LIPO_LIBVPX),$(call lipo_lib_template,libvpx.a)))
-
 #
 # Rule to make assembler configuration file from C configuration file
 #
@@ -447,13 +443,10 @@ BINS-$(BUILD_LIBVPX) += $(LIBVPX_TEST_BIN)
 
 CODEC_LIB=$(if $(CONFIG_DEBUG_LIBS),vpx_g,vpx)
 CODEC_LIB_SUF=$(if $(CONFIG_SHARED),.so,.a)
-ifeq ($(BUILD_LIBVPX),yes)
 $(LIBVPX_TEST_BIN): lib$(CODEC_LIB)$(CODEC_LIB_SUF) libgtest.a
 $(eval $(call linkerxx_template,$(LIBVPX_TEST_BIN), \
               $(LIBVPX_TEST_OBJS) \
               -L. -lvpx -lgtest $(extralibs) -lm))
-$(if $(LIPO_LIBS),$(eval $(call lipo_bin_template,$(LIBVPX_TEST_BIN))))
-endif  # BUILD_LIBVPX=yes
 
 endif  # CONFIG_UNIT_TESTS