build: merge with master

Change-Id: I8ea836ce92c1c96f1e2bdf45e704d36ec9dbc401

7 files changed, 555 insertions, 99 deletions

diff --git a/build/make/Android.mk b/build/make/Android.mk
new file mode 100644
index 000000000..afd27597c
--- /dev/null
+++ b/build/make/Android.mk
@@ -0,0 +1,210 @@
+##
+##  Copyright (c) 2012 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.
+##
+
+#
+# This file is to be used for compiling libvpx for Android using the NDK.
+# In an Android project place a libvpx checkout in the jni directory.
+# Run the configure script from the jni directory.  Base libvpx
+# encoder/decoder configuration will look similar to:
+# ./libvpx/configure --target=armv7-android-gcc --disable-examples \
+#                    --sdk-path=/opt/android-ndk-r6b/
+#
+# When targeting Android, realtime-only is enabled by default.  This can
+# be overridden by adding the command line flag:
+#  --disable-realtime-only
+#
+# This will create .mk files that contain variables that contain the
+# source files to compile.
+#
+# Place an Android.mk file in the jni directory that references the
+# Android.mk file in the libvpx directory:
+# LOCAL_PATH := $(call my-dir)
+# include $(CLEAR_VARS)
+# include libvpx/build/make/Android.mk
+#
+# There are currently two TARGET_ARCH_ABI targets for ARM.
+# armeabi and armeabi-v7a.  armeabi-v7a is selected by creating an
+# Application.mk in the jni directory that contains:
+# APP_ABI := armeabi-v7a
+#
+# By default libvpx will detect at runtime the existance of NEON extension.
+# For this we import the 'cpufeatures' module from the NDK sources.
+# libvpx can also be configured without this runtime detection method.
+# Configuring with --disable-runtime-cpu-detect will assume presence of NEON.
+# Configuring with --disable-runtime-cpu-detect --disable-neon will remove any
+# NEON dependency.
+
+# To change to building armeabi, run ./libvpx/configure again, but with
+# --target=arm5te-android-gcc and modify the Application.mk file to
+# set APP_ABI := armeabi
+#
+# Running ndk-build will build libvpx and include it in your project.
+#
+
+CONFIG_DIR := $(LOCAL_PATH)
+LIBVPX_PATH := $(LOCAL_PATH)/libvpx
+ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas
+ASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL)
+
+# Makefiles created by the libvpx configure process
+# This will need to be fixed to handle x86.
+ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
+  include $(CONFIG_DIR)/libs-armv7-android-gcc.mk
+else
+  include $(CONFIG_DIR)/libs-armv5te-android-gcc.mk
+endif
+
+# Rule that is normally in Makefile created by libvpx
+# configure.  Used to filter out source files based on configuration.
+enabled=$(filter-out $($(1)-no),$($(1)-yes))
+
+# Override the relative path that is defined by the libvpx
+# configure process
+SRC_PATH_BARE := $(LIBVPX_PATH)
+
+# Include the list of files to be built
+include $(LIBVPX_PATH)/libs.mk
+
+# Want arm, not thumb, optimized
+LOCAL_ARM_MODE := arm
+LOCAL_CFLAGS := -O3
+
+# -----------------------------------------------------------------------------
+# Template  : asm_offsets_template
+# Arguments : 1: assembly offsets file to be created
+#             2: c file to base assembly offsets on
+# Returns   : None
+# Usage     : $(eval $(call asm_offsets_template,<asmfile>, <srcfile>
+# Rationale : Create offsets at compile time using for structures that are
+#             defined in c, but used in assembly functions.
+# -----------------------------------------------------------------------------
+define asm_offsets_template
+
+_SRC:=$(2)
+_OBJ:=$(ASM_CNV_PATH)/$$(notdir $(2)).S
+
+_FLAGS = $$($$(my)CFLAGS) \
+          $$(call get-src-file-target-cflags,$(2)) \
+          $$(call host-c-includes,$$(LOCAL_C_INCLUDES) $$(CONFIG_DIR)) \
+          $$(LOCAL_CFLAGS) \
+          $$(NDK_APP_CFLAGS) \
+          $$(call host-c-includes,$$($(my)C_INCLUDES)) \
+          -DINLINE_ASM \
+          -S \
+
+_TEXT = "Compile $$(call get-src-file-text,$(2))"
+_CC   = $$(TARGET_CC)
+
+$$(eval $$(call ev-build-file))
+
+$(1) : $$(_OBJ) $(2)
+	@mkdir -p $$(dir $$@)
+	@grep $(OFFSET_PATTERN) $$< | tr -d '\#' | $(CONFIG_DIR)/$(ASM_CONVERSION) > $$@
+endef
+
+# Use ads2gas script to convert from RVCT format to GAS format.  This passes
+#  puts the processed file under $(ASM_CNV_PATH).  Local clean rule
+#  to handle removing these
+ASM_CNV_OFFSETS_DEPEND = $(ASM_CNV_PATH)/asm_com_offsets.asm
+ifeq ($(CONFIG_VP8_DECODER), yes)
+  ASM_CNV_OFFSETS_DEPEND += $(ASM_CNV_PATH)/asm_dec_offsets.asm
+endif
+ifeq ($(CONFIG_VP8_ENCODER), yes)
+  ASM_CNV_OFFSETS_DEPEND += $(ASM_CNV_PATH)/asm_enc_offsets.asm
+endif
+
+.PRECIOUS: %.asm.s
+$(ASM_CNV_PATH)/libvpx/%.asm.s: $(LIBVPX_PATH)/%.asm $(ASM_CNV_OFFSETS_DEPEND)
+	@mkdir -p $(dir $@)
+	@$(CONFIG_DIR)/$(ASM_CONVERSION) <$< > $@
+
+# For building vpx_rtcd.h, which has a rule in libs.mk
+TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
+target := libs
+
+LOCAL_SRC_FILES += vpx_config.c
+
+# Remove duplicate entries
+CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS))
+
+# Pull out C files.  vpx_config.c is in the immediate directory and
+# so it does not need libvpx/ prefixed like the rest of the source files.
+CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE))
+LOCAL_CODEC_SRCS_C = $(filter-out vpx_config.c, $(CODEC_SRCS_C))
+
+LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libvpx/$(file))
+
+# Pull out assembly files, splitting NEON from the rest.  This is
+# done to specify that the NEON assembly files use NEON assembler flags.
+CODEC_SRCS_ASM_ALL = $(filter %.asm.s, $(CODEC_SRCS_UNIQUE))
+CODEC_SRCS_ASM = $(foreach v, \
+                 $(CODEC_SRCS_ASM_ALL), \
+                 $(if $(findstring neon,$(v)),,$(v)))
+CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.s, \
+                         $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \
+                         $(CODEC_SRCS_ASM))
+LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS)
+
+ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
+  CODEC_SRCS_ASM_NEON = $(foreach v, \
+                        $(CODEC_SRCS_ASM_ALL),\
+                        $(if $(findstring neon,$(v)),$(v),))
+  CODEC_SRCS_ASM_NEON_ADS2GAS = $(patsubst %.s, \
+                                $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \
+                                $(CODEC_SRCS_ASM_NEON))
+  LOCAL_SRC_FILES += $(patsubst %.s, \
+                     %.s.neon, \
+                     $(CODEC_SRCS_ASM_NEON_ADS2GAS))
+endif
+
+LOCAL_CFLAGS += \
+    -DHAVE_CONFIG_H=vpx_config.h \
+    -I$(LIBVPX_PATH) \
+    -I$(ASM_CNV_PATH)
+
+LOCAL_MODULE := libvpx
+
+LOCAL_LDLIBS := -llog
+
+ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
+  LOCAL_STATIC_LIBRARIES := cpufeatures
+endif
+
+$(foreach file, $(LOCAL_SRC_FILES), $(LOCAL_PATH)/$(file)): vpx_rtcd.h
+
+.PHONY: clean
+clean:
+	@echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]"
+	@$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS)
+	@$(RM) $(patsubst %.asm, %.*, $(ASM_CNV_OFFSETS_DEPEND))
+	@$(RM) -r $(ASM_CNV_PATH)
+	@$(RM) $(CLEAN-OBJS)
+
+include $(BUILD_SHARED_LIBRARY)
+
+$(eval $(call asm_offsets_template,\
+    $(ASM_CNV_PATH)/asm_com_offsets.asm, \
+    $(LIBVPX_PATH)/vp8/common/asm_com_offsets.c))
+
+ifeq ($(CONFIG_VP8_DECODER), yes)
+  $(eval $(call asm_offsets_template,\
+    $(ASM_CNV_PATH)/asm_dec_offsets.asm, \
+    $(LIBVPX_PATH)/vp8/decoder/asm_dec_offsets.c))
+endif
+
+ifeq ($(CONFIG_VP8_ENCODER), yes)
+  $(eval $(call asm_offsets_template,\
+    $(ASM_CNV_PATH)/asm_enc_offsets.asm, \
+    $(LIBVPX_PATH)/vp8/encoder/asm_enc_offsets.c))
+endif
+
+ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
+$(call import-module,cpufeatures)
+endif
diff --git a/build/make/Makefile b/build/make/Makefile
index f05867f04..92113ccb8 100644
--- a/build/make/Makefile
+++ b/build/make/Makefile
@@ -21,6 +21,7 @@ all: .DEFAULT
 clean:: .DEFAULT
 install:: .DEFAULT
 test:: .DEFAULT
+testdata:: .DEFAULT
 
 
 # Note: md5sum is not installed on OS X, but openssl is. Openssl may not be
@@ -66,6 +67,7 @@ endif
 BUILD_ROOT?=.
 VPATH=$(SRC_PATH_BARE)
 CFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT) -I$(SRC_PATH)
+CXXFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT) -I$(SRC_PATH)
 ASFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT)/ -I$(SRC_PATH)/
 DIST_DIR?=dist
 HOSTCC?=gcc
@@ -98,6 +100,8 @@ dist:
 install::
 .PHONY: test
 test::
+.PHONY: testdata
+testdata::
 
 $(BUILD_PFX)%.c.d: %.c
 	$(if $(quiet),@echo "    [DEP] $@")
@@ -111,11 +115,11 @@ $(BUILD_PFX)%.c.o: %.c
 $(BUILD_PFX)%.cc.d: %.cc
 	$(if $(quiet),@echo "    [DEP] $@")
 	$(qexec)mkdir -p $(dir $@)
-	$(qexec)g++ $(INTERNAL_CFLAGS) $(CFLAGS) -M $< | $(fmt_deps) > $@
+	$(qexec)$(CXX) $(INTERNAL_CFLAGS) $(CXXFLAGS) -M $< | $(fmt_deps) > $@
 
 $(BUILD_PFX)%.cc.o: %.cc
 	$(if $(quiet),@echo "    [CXX] $@")
-	$(qexec)g++ $(INTERNAL_CFLAGS) $(CFLAGS) -c -o $@ $<
+	$(qexec)$(CXX) $(INTERNAL_CFLAGS) $(CXXFLAGS) -c -o $@ $<
 
 $(BUILD_PFX)%.asm.d: %.asm
 	$(if $(quiet),@echo "    [DEP] $@")
@@ -213,7 +217,7 @@ define linkerxx_template
 $(1): $(filter-out -%,$(2))
 $(1):
 	$(if $(quiet),@echo    "    [LD] $$@")
-	$(qexec)g++ $$(strip $$(INTERNAL_LDFLAGS) $$(LDFLAGS) -o $$@ $(2) $(3) $$(extralibs))
+	$(qexec)$$(CXX) $$(strip $$(INTERNAL_LDFLAGS) $$(LDFLAGS) -o $$@ $(2) $(3) $$(extralibs))
 endef
 # make-3.80 has a bug with expanding large input strings to the eval function,
 # which was triggered in some cases by the following component of
diff --git a/build/make/ads2gas.pl b/build/make/ads2gas.pl
index 388133aa2..ba70242dc 100755
--- a/build/make/ads2gas.pl
+++ b/build/make/ads2gas.pl
@@ -26,12 +26,22 @@ print "\t.equ DO1STROUNDING, 0\n";
 
 while (<STDIN>)
 {
+    undef $comment;
+    undef $line;
+    $comment_char = ";";
+    $comment_sub = "@";
+
+    # Handle comments.
+    if (/$comment_char/)
+    {
+      $comment = "";
+      ($line, $comment) = /(.*?)$comment_char(.*)/;
+      $_ = $line;
+    }
+
     # Load and store alignment
     s/@/,:/g;
 
-    # Comment character
-    s/;/@/g;
-
     # Hexadecimal constants prefaced by 0x
     s/#&/#0x/g;
 
@@ -62,6 +72,17 @@ while (<STDIN>)
     # Convert LTORG to .ltorg
     s/LTORG/.ltorg/g;
 
+    # Convert endfunc to nothing.
+    s/endfunc//ig;
+
+    # Convert FUNCTION to nothing.
+    s/FUNCTION//g;
+    s/function//g;
+
+    s/ENTRY//g;
+    s/MSARMASM/0/g;
+    s/^\s+end\s+$//g;
+
     # Convert IF :DEF:to .if
     # gcc doesn't have the ability to do a conditional
     # if defined variable that is set by IF :DEF: on
@@ -106,6 +127,7 @@ while (<STDIN>)
     if (s/RN\s+([Rr]\d+|lr)/.req $1/)
     {
         print;
+        print "$comment_sub$comment\n" if defined $comment;
         next;
     }
 
@@ -114,6 +136,9 @@ while (<STDIN>)
     s/EXPORT\s+\|([\$\w]*)\|/.global $1 \n\t.type $1, function/;
     s/IMPORT\s+\|([\$\w]*)\|/.global $1/;
 
+    s/EXPORT\s+([\$\w]*)/.global $1/;
+    s/export\s+([\$\w]*)/.global $1/;
+
     # No vertical bars required; make additional symbol with prepended
     # underscore
     s/^\|(\$?\w+)\|/_$1\n\t$1:/g;
@@ -126,15 +151,21 @@ while (<STDIN>)
     # ALIGN directive
     s/ALIGN/.balign/g;
 
-    # Strip ARM
-    s/\sARM/@ ARM/g;
+    # ARM code
+    s/\sARM/.arm/g;
+
+    # NEON code
+    s/(vld1.\d+\s+)(q\d+)/$1\{$2\}/g;
+    s/(vtbl.\d+\s+[^,]+),([^,]+)/$1,\{$2\}/g;
+
+    # eabi_attributes numerical equivalents can be found in the
+    # "ARM IHI 0045C" document.
 
-    # Strip REQUIRE8
-    #s/\sREQUIRE8/@ REQUIRE8/g;
-    s/\sREQUIRE8/@ /g;      #EQU cause problem
+    # REQUIRE8 Stack is required to be 8-byte aligned
+    s/\sREQUIRE8/.eabi_attribute 24, 1 \@Tag_ABI_align_needed/g;
 
-    # Strip PRESERVE8
-    s/\sPRESERVE8/@ PRESERVE8/g;
+    # PRESERVE8 Stack 8-byte align is preserved
+    s/\sPRESERVE8/.eabi_attribute 25, 1 \@Tag_ABI_align_preserved/g;
 
     # Use PROC and ENDP to give the symbols a .size directive.
     # This makes them show up properly in debugging tools like gdb and valgrind.
@@ -155,7 +186,7 @@ while (<STDIN>)
     }
 
     # EQU directive
-    s/(.*)EQU(.*)/.equ $1, $2/;
+    s/(\S+\s+)EQU(\s+\S+)/.equ $1, $2/;
 
     # Begin macro definition
     if (/MACRO/) {
@@ -170,6 +201,7 @@ while (<STDIN>)
     s/MEND/.endm/;              # No need to tell it where to stop assembling
     next if /^\s*END\s*$/;
     print;
+    print "$comment_sub$comment\n" if defined $comment;
 }
 
 # Mark that this object doesn't need an executable stack.
diff --git a/build/make/ads2gas_apple.pl b/build/make/ads2gas_apple.pl
index 78f4a97f5..81280bf78 100755
--- a/build/make/ads2gas_apple.pl
+++ b/build/make/ads2gas_apple.pl
@@ -30,6 +30,8 @@ my @mapping_list = ("\$0", "\$1", "\$2", "\$3", "\$4", "\$5", "\$6", "\$7", "\$8
 
 my @incoming_array;
 
+my @imported_functions;
+
 # Perl trim function to remove whitespace from the start and end of the string
 sub trim($)
 {
@@ -132,7 +134,18 @@ while (<STDIN>)
     # Make function visible to linker, and make additional symbol with
     # prepended underscore
     s/EXPORT\s+\|([\$\w]*)\|/.globl _$1\n\t.globl $1/;
-    s/IMPORT\s+\|([\$\w]*)\|/.globl $1/;
+
+    # Prepend imported functions with _
+    if (s/IMPORT\s+\|([\$\w]*)\|/.globl $1/)
+    {
+        $function = trim($1);
+        push(@imported_functions, $function);
+    }
+
+    foreach $function (@imported_functions)
+    {
+        s/$function/_$function/;
+    }
 
     # No vertical bars required; make additional symbol with prepended
     # underscore
@@ -157,8 +170,8 @@ while (<STDIN>)
     s/\sPRESERVE8/@ PRESERVE8/g;
 
     # Strip PROC and ENDPROC
-    s/PROC/@/g;
-    s/ENDP/@/g;
+    s/\bPROC\b/@/g;
+    s/\bENDP\b/@/g;
 
     # EQU directive
     s/(.*)EQU(.*)/.set $1, $2/;
diff --git a/build/make/configure.sh b/build/make/configure.sh
index 00c27c261..05bbabe77 100755
--- a/build/make/configure.sh
+++ b/build/make/configure.sh
@@ -166,6 +166,17 @@ is_in(){
 
 add_cflags() {
     CFLAGS="${CFLAGS} $@"
+    CXXFLAGS="${CXXFLAGS} $@"
+}
+
+
+add_cflags_only() {
+    CFLAGS="${CFLAGS} $@"
+}
+
+
+add_cxxflags_only() {
+    CXXFLAGS="${CXXFLAGS} $@"
 }
 
 
@@ -277,6 +288,13 @@ check_cc() {
     check_cmd ${CC} ${CFLAGS} "$@" -c -o ${TMP_O} ${TMP_C}
 }
 
+check_cxx() {
+    log check_cxx "$@"
+    cat >${TMP_C}
+    log_file ${TMP_C}
+    check_cmd ${CXX} ${CXXFLAGS} "$@" -c -o ${TMP_O} ${TMP_C}
+}
+
 check_cpp() {
     log check_cpp "$@"
     cat > ${TMP_C}
@@ -310,8 +328,25 @@ int x;
 EOF
 }
 
+check_cxxflags() {
+    log check_cxxflags "$@"
+
+    # Catch CFLAGS that trigger CXX warnings
+    case "$CXX" in
+      *g++*) check_cxx -Werror "$@" <<EOF
+int x;
+EOF
+      ;;
+      *) check_cxx "$@" <<EOF
+int x;
+EOF
+      ;;
+    esac
+}
+
 check_add_cflags() {
-    check_cflags "$@" && add_cflags "$@"
+    check_cxxflags "$@" && add_cxxflags_only "$@"
+    check_cflags "$@" && add_cflags_only "$@"
 }
 
 check_add_asflags() {
@@ -340,7 +375,8 @@ EOF
 }
 
 write_common_config_banner() {
-    echo '# This file automatically generated by configure. Do not edit!' > config.mk
+    print_webm_license config.mk "##" ""
+    echo '# This file automatically generated by configure. Do not edit!' >> config.mk
     echo "TOOLCHAIN := ${toolchain}" >> config.mk
 
     case ${toolchain} in
@@ -366,9 +402,12 @@ true
 
 write_common_target_config_mk() {
     local CC=${CC}
+    local CXX=${CXX}
     enabled ccache && CC="ccache ${CC}"
+    enabled ccache && CXX="ccache ${CXX}"
+    print_webm_license $1 "##" ""
 
-    cat > $1 << EOF
+    cat >> $1 << EOF
 # This file automatically generated by configure. Do not edit!
 SRC_PATH="$source_path"
 SRC_PATH_BARE=$source_path
@@ -377,6 +416,7 @@ TOOLCHAIN=${toolchain}
 ASM_CONVERSION=${asm_conversion_cmd:-${source_path}/build/make/ads2gas.pl}
 
 CC=${CC}
+CXX=${CXX}
 AR=${AR}
 LD=${LD}
 AS=${AS}
@@ -384,11 +424,13 @@ STRIP=${STRIP}
 NM=${NM}
 
 CFLAGS  = ${CFLAGS}
+CXXFLAGS  = ${CXXFLAGS}
 ARFLAGS = -rus\$(if \$(quiet),c,v)
 LDFLAGS = ${LDFLAGS}
 ASFLAGS = ${ASFLAGS}
 extralibs = ${extralibs}
 AS_SFX    = ${AS_SFX:-.asm}
+EXE_SFX   = ${EXE_SFX}
 RTCD_OPTIONS = ${RTCD_OPTIONS}
 EOF
 
@@ -411,7 +453,8 @@ EOF
 
 
 write_common_target_config_h() {
-    cat > ${TMP_H} << EOF
+    print_webm_license ${TMP_H} "/*" " */"
+    cat >> ${TMP_H} << EOF
 /* This file automatically generated by configure. Do not edit! */
 #ifndef VPX_CONFIG_H
 #define VPX_CONFIG_H
@@ -454,9 +497,12 @@ process_common_cmdline() {
         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
         if echo "${ARCH_EXT_LIST}" | grep "^ *$option\$" >/dev/null; then
             [ $action = "disable" ] && RTCD_OPTIONS="${RTCD_OPTIONS}${opt} "
-        else
-            echo "${CMDLINE_SELECT}" | grep "^ *$option\$" >/dev/null ||
-                die_unknown $opt
+        elif [ $action = "disable" ] && ! disabled $option ; then
+          echo "${CMDLINE_SELECT}" | grep "^ *$option\$" >/dev/null ||
+            die_unknown $opt
+        elif [ $action = "enable" ] && ! enabled $option ; then
+          echo "${CMDLINE_SELECT}" | grep "^ *$option\$" >/dev/null ||
+            die_unknown $opt
         fi
         $action $option
         ;;
@@ -488,7 +534,11 @@ process_common_cmdline() {
         --libdir=*)
         libdir="${optval}"
         ;;
-        --libc|--as|--prefix|--libdir)
+        --sdk-path=*)
+        [ -d "${optval}" ] || die "Not a directory: ${optval}"
+        sdk_path="${optval}"
+        ;;
+        --libc|--as|--prefix|--libdir|--sdk-path)
         die "Option ${opt} requires argument"
         ;;
         --help|-h) show_help
@@ -527,20 +577,31 @@ post_process_cmdline() {
 
 setup_gnu_toolchain() {
         CC=${CC:-${CROSS}gcc}
+        CXX=${CXX:-${CROSS}g++}
         AR=${AR:-${CROSS}ar}
         LD=${LD:-${CROSS}${link_with_cc:-ld}}
         AS=${AS:-${CROSS}as}
     STRIP=${STRIP:-${CROSS}strip}
     NM=${NM:-${CROSS}nm}
         AS_SFX=.s
+        EXE_SFX=
 }
 
 process_common_toolchain() {
     if [ -z "$toolchain" ]; then
-        gcctarget="$(gcc -dumpmachine 2> /dev/null)"
+        gcctarget="${CHOST:-$(gcc -dumpmachine 2> /dev/null)}"
 
         # detect tgt_isa
         case "$gcctarget" in
+            armv6*)
+                tgt_isa=armv6
+                ;;
+            armv7*)
+                tgt_isa=armv7
+                ;;
+            armv5te*)
+                tgt_isa=armv5te
+                ;;
             *x86_64*|*amd64*)
                 tgt_isa=x86_64
                 ;;
@@ -572,6 +633,14 @@ process_common_toolchain() {
                 tgt_isa=x86_64
                 tgt_os=darwin10
                 ;;
+            *darwin11*)
+                tgt_isa=x86_64
+                tgt_os=darwin11
+                ;;
+            *darwin12*)
+                tgt_isa=x86_64
+                tgt_os=darwin12
+                ;;
             *mingw32*|*cygwin*)
                 [ -z "$tgt_isa" ] && tgt_isa=x86
                 tgt_os=win32
@@ -582,6 +651,9 @@ process_common_toolchain() {
             *solaris2.10)
                 tgt_os=solaris
                 ;;
+            *os2*)
+                tgt_os=os2
+                ;;
         esac
 
         if [ -n "$tgt_isa" ] && [ -n "$tgt_os" ]; then
@@ -610,39 +682,60 @@ process_common_toolchain() {
 
     # Enable the architecture family
     case ${tgt_isa} in
-        arm*|iwmmxt*) enable arm;;
-    mips*)        enable mips;;
+        arm*) enable arm;;
+        mips*) enable mips;;
     esac
 
     # PIC is probably what we want when building shared libs
     enabled shared && soft_enable pic
 
-    # Handle darwin variants
+    # Handle darwin variants. Newer SDKs allow targeting older
+    # platforms, so find the newest SDK available.
+    case ${toolchain} in
+        *-darwin*)
+            if [ -z "${DEVELOPER_DIR}" ]; then
+                DEVELOPER_DIR=`xcode-select -print-path 2> /dev/null`
+                [ $? -ne 0 ] && OSX_SKIP_DIR_CHECK=1
+            fi
+            if [ -z "${OSX_SKIP_DIR_CHECK}" ]; then
+                OSX_SDK_ROOTS="${DEVELOPER_DIR}/SDKs"
+                OSX_SDK_VERSIONS="MacOSX10.4u.sdk MacOSX10.5.sdk MacOSX10.6.sdk"
+                OSX_SDK_VERSIONS="${OSX_SDK_VERSIONS} MacOSX10.7.sdk"
+                for v in ${OSX_SDK_VERSIONS}; do
+                    if [ -d "${OSX_SDK_ROOTS}/${v}" ]; then
+                        osx_sdk_dir="${OSX_SDK_ROOTS}/${v}"
+                    fi
+                done
+            fi
+            ;;
+    esac
+
+    if [ -d "${osx_sdk_dir}" ]; then
+        add_cflags  "-isysroot ${osx_sdk_dir}"
+        add_ldflags "-isysroot ${osx_sdk_dir}"
+    fi
+
     case ${toolchain} in
         *-darwin8-*)
-            add_cflags  "-isysroot /Developer/SDKs/MacOSX10.4u.sdk"
             add_cflags  "-mmacosx-version-min=10.4"
-            add_ldflags "-isysroot /Developer/SDKs/MacOSX10.4u.sdk"
             add_ldflags "-mmacosx-version-min=10.4"
             ;;
         *-darwin9-*)
-            add_cflags  "-isysroot /Developer/SDKs/MacOSX10.5.sdk"
             add_cflags  "-mmacosx-version-min=10.5"
-            add_ldflags "-isysroot /Developer/SDKs/MacOSX10.5.sdk"
             add_ldflags "-mmacosx-version-min=10.5"
             ;;
         *-darwin10-*)
-            add_cflags  "-isysroot /Developer/SDKs/MacOSX10.6.sdk"
             add_cflags  "-mmacosx-version-min=10.6"
-            add_ldflags "-isysroot /Developer/SDKs/MacOSX10.6.sdk"
             add_ldflags "-mmacosx-version-min=10.6"
             ;;
         *-darwin11-*)
-            add_cflags  "-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk"
             add_cflags  "-mmacosx-version-min=10.7"
-            add_ldflags "-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk"
             add_ldflags "-mmacosx-version-min=10.7"
             ;;
+        *-darwin12-*)
+            add_cflags  "-mmacosx-version-min=10.8"
+            add_ldflags "-mmacosx-version-min=10.8"
+            ;;
     esac
 
     # Handle Solaris variants. Solaris 10 needs -lposix4
@@ -658,44 +751,54 @@ process_common_toolchain() {
 
     # Process ARM architecture variants
     case ${toolchain} in
-    arm*|iwmmxt*)
-    # on arm, isa versions are supersets
-    enabled armv7a && soft_enable armv7 ### DEBUG
-    enabled armv7 && soft_enable armv6
-    enabled armv7 || enabled armv6 && soft_enable armv5te
-    enabled armv7 || enabled armv6 && soft_enable fast_unaligned
-    enabled iwmmxt2 && soft_enable iwmmxt
-    enabled iwmmxt && soft_enable armv5te
+    arm*)
+        # on arm, isa versions are supersets
+        case ${tgt_isa} in
+        armv7)
+            soft_enable neon
+            soft_enable media
+            soft_enable edsp
+            soft_enable fast_unaligned
+            ;;
+        armv6)
+            soft_enable media
+            soft_enable edsp
+            soft_enable fast_unaligned
+            ;;
+        armv5te)
+            soft_enable edsp
+            ;;
+        esac
 
-    asm_conversion_cmd="cat"
+        asm_conversion_cmd="cat"
 
         case ${tgt_cc} in
         gcc)
-        if enabled iwmmxt || enabled iwmmxt2
-            then
-                CROSS=${CROSS:-arm-iwmmxt-linux-gnueabi-}
-            elif enabled symbian; then
-                CROSS=${CROSS:-arm-none-symbianelf-}
-            else
-                CROSS=${CROSS:-arm-none-linux-gnueabi-}
-            fi
+            CROSS=${CROSS:-arm-none-linux-gnueabi-}
             link_with_cc=gcc
             setup_gnu_toolchain
             arch_int=${tgt_isa##armv}
             arch_int=${arch_int%%te}
             check_add_asflags --defsym ARCHITECTURE=${arch_int}
             tune_cflags="-mtune="
-        if enabled iwmmxt || enabled iwmmxt2
-            then
-                check_add_asflags -mcpu=${tgt_isa}
-            elif enabled armv7
-            then
-                check_add_cflags -march=armv7-a -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp  #-ftree-vectorize
-                check_add_asflags -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp  #-march=armv7-a
+            if [ ${tgt_isa} == "armv7" ]; then
+                check_add_cflags  -march=armv7-a -mfloat-abi=softfp
+                check_add_asflags -march=armv7-a -mfloat-abi=softfp
+
+                if enabled neon
+                then
+                    check_add_cflags -mfpu=neon #-ftree-vectorize
+                    check_add_asflags -mfpu=neon
+                fi
+
+                if [ -z "${tune_cpu}" ]; then
+                    tune_cpu=cortex-a8
+                fi
             else
                 check_add_cflags -march=${tgt_isa}
                 check_add_asflags -march=${tgt_isa}
             fi
+
             enabled debug && add_asflags -g
             asm_conversion_cmd="${source_path}/build/make/ads2gas.pl"
             ;;
@@ -709,10 +812,14 @@ process_common_toolchain() {
             tune_cflags="--cpu="
             tune_asflags="--cpu="
             if [ -z "${tune_cpu}" ]; then
-            if enabled armv7
-                then
-                    check_add_cflags --cpu=Cortex-A8 --fpu=softvfp+vfpv3
-                    check_add_asflags --cpu=Cortex-A8 --fpu=softvfp+vfpv3
+                if [ ${tgt_isa} == "armv7" ]; then
+                    if enabled neon
+                    then
+                        check_add_cflags --fpu=softvfp+vfpv3
+                        check_add_asflags --fpu=softvfp+vfpv3
+                    fi
+                    check_add_cflags --cpu=Cortex-A8
+                    check_add_asflags --cpu=Cortex-A8
                 else
                     check_add_cflags --cpu=${tgt_isa##armv}
                     check_add_asflags --cpu=${tgt_isa##armv}
@@ -733,12 +840,58 @@ process_common_toolchain() {
             disable multithread
             disable os_support
             ;;
+
+        android*)
+            SDK_PATH=${sdk_path}
+            COMPILER_LOCATION=`find "${SDK_PATH}" \
+                               -name "arm-linux-androideabi-gcc*" -print -quit`
+            TOOLCHAIN_PATH=${COMPILER_LOCATION%/*}/arm-linux-androideabi-
+            CC=${TOOLCHAIN_PATH}gcc
+            CXX=${TOOLCHAIN_PATH}g++
+            AR=${TOOLCHAIN_PATH}ar
+            LD=${TOOLCHAIN_PATH}gcc
+            AS=${TOOLCHAIN_PATH}as
+            STRIP=${TOOLCHAIN_PATH}strip
+            NM=${TOOLCHAIN_PATH}nm
+
+            if [ -z "${alt_libc}" ]; then
+                alt_libc=`find "${SDK_PATH}" -name arch-arm -print | \
+                          awk '{n = split($0,a,"/"); \
+                                split(a[n-1],b,"-"); \
+                                print $0 " " b[2]}' | \
+                          sort -g -k 2 | \
+                          awk '{ print $1 }' | tail -1`
+            fi
+
+            add_cflags "--sysroot=${alt_libc}"
+            add_ldflags "--sysroot=${alt_libc}"
+
+            # linker flag that routes around a CPU bug in some
+            # Cortex-A8 implementations (NDK Dev Guide)
+            add_ldflags "-Wl,--fix-cortex-a8"
+
+            enable pic
+            soft_enable realtime_only
+            if [ ${tgt_isa} == "armv7" ]; then
+                soft_enable runtime_cpu_detect
+            fi
+            if enabled runtime_cpu_detect; then
+                add_cflags "-I${SDK_PATH}/sources/android/cpufeatures"
+            fi
+          ;;
+
         darwin*)
-            SDK_PATH=/Developer/Platforms/iPhoneOS.platform/Developer
+            if [ -z "${sdk_path}" ]; then
+                SDK_PATH=`xcode-select -print-path 2> /dev/null`
+                SDK_PATH=${SDK_PATH}/Platforms/iPhoneOS.platform/Developer
+            else
+                SDK_PATH=${sdk_path}
+            fi
             TOOLCHAIN_PATH=${SDK_PATH}/usr/bin
+            CXX=${TOOLCHAIN_PATH}/g++
             CC=${TOOLCHAIN_PATH}/gcc
             AR=${TOOLCHAIN_PATH}/ar
-            LD=${TOOLCHAIN_PATH}/arm-apple-darwin10-gcc-4.2.1
+            LD=${TOOLCHAIN_PATH}/arm-apple-darwin10-llvm-gcc-4.2
             AS=${TOOLCHAIN_PATH}/as
             STRIP=${TOOLCHAIN_PATH}/strip
             NM=${TOOLCHAIN_PATH}/nm
@@ -752,13 +905,14 @@ process_common_toolchain() {
             add_cflags -arch ${tgt_isa}
             add_ldflags -arch_only ${tgt_isa}
 
-            add_cflags  "-isysroot ${SDK_PATH}/SDKs/iPhoneOS4.3.sdk"
+            if [ -z "${alt_libc}" ]; then
+                alt_libc=${SDK_PATH}/SDKs/iPhoneOS5.1.sdk
+            fi
 
-            # This should be overridable
-            alt_libc=${SDK_PATH}/SDKs/iPhoneOS4.3.sdk
+            add_cflags  "-isysroot ${alt_libc}"
 
             # Add the paths for the alternate libc
-            for d in usr/include usr/include/gcc/darwin/4.2/ usr/lib/gcc/arm-apple-darwin10/4.2.1/include/; do
+            for d in usr/include; do
                 try_dir="${alt_libc}/${d}"
                 [ -d "${try_dir}" ] && add_cflags -I"${try_dir}"
             done
@@ -795,29 +949,19 @@ process_common_toolchain() {
             fi
         ;;
 
-        symbian*)
-            enable symbian
-            # Add the paths for the alternate libc
-            for d in include/libc; do
-                try_dir="${alt_libc}/${d}"
-                [ -d "${try_dir}" ] && add_cflags -I"${try_dir}"
-            done
-            for d in release/armv5/urel; do
-                try_dir="${alt_libc}/${d}"
-                [ -d "${try_dir}" ] && add_ldflags -L"${try_dir}"
-            done
-            add_cflags -DIMPORT_C=
-
         esac
     ;;
     mips*)
-        CROSS=${CROSS:-mipsel-linux-uclibc-}
         link_with_cc=gcc
         setup_gnu_toolchain
         tune_cflags="-mtune="
+        if enabled dspr2; then
+            check_add_cflags -mips32r2 -mdspr2
+            disable fast_unaligned
+        fi
         check_add_cflags -march=${tgt_isa}
-    check_add_asflags -march=${tgt_isa}
-    check_add_asflags -KPIC
+        check_add_asflags -march=${tgt_isa}
+        check_add_asflags -KPIC
     ;;
     ppc*)
         enable ppc
@@ -845,6 +989,11 @@ process_common_toolchain() {
     x86*)
         bits=32
         enabled x86_64 && bits=64
+        check_cpp <<EOF && bits=x32
+#ifndef __ILP32__
+#error "not x32"
+#endif
+EOF
         soft_enable runtime_cpu_detect
         soft_enable mmx
         soft_enable sse
@@ -859,9 +1008,13 @@ process_common_toolchain() {
                 ;;
             solaris*)
                 CC=${CC:-${CROSS}gcc}
+                CXX=${CXX:-${CROSS}g++}
                 LD=${LD:-${CROSS}gcc}
                 CROSS=${CROSS:-g}
                 ;;
+            os2)
+                AS=${AS:-nasm}
+                ;;
         esac
 
         AS="${alt_as:-${AS:-auto}}"
@@ -883,16 +1036,22 @@ process_common_toolchain() {
                         tune_cflags="-march="
                     ;;
                 esac
-                ;;
+            ;;
             gcc*)
-                add_cflags  -m${bits}
+                add_cflags -m${bits}
                 add_ldflags -m${bits}
                 link_with_cc=gcc
                 tune_cflags="-march="
             setup_gnu_toolchain
                 #for 32 bit x86 builds, -O3 did not turn on this flag
                 enabled optimizations && check_add_cflags -fomit-frame-pointer
-                ;;
+            ;;
+            vs*)
+                # When building with Microsoft Visual Studio the assembler is
+                # invoked directly. Checking at configure time is unnecessary.
+                # Skip the check by setting AS arbitrarily
+                AS=msvs
+            ;;
         esac
 
         case "${AS}" in
@@ -901,14 +1060,18 @@ process_common_toolchain() {
                 which yasm >/dev/null 2>&1 && AS=yasm
                 [ "${AS}" = auto -o -z "${AS}" ] \
                     && die "Neither yasm nor nasm have been found"
-                ;;
+            ;;
         esac
         log_echo "  using $AS"
         [ "${AS##*/}" = nasm ] && add_asflags -Ox
         AS_SFX=.asm
         case  ${tgt_os} in
-            win*)
-                add_asflags -f win${bits}
+            win32)
+                add_asflags -f win32
+                enabled debug && add_asflags -g cv8
+            ;;
+            win64)
+                add_asflags -f x64
                 enabled debug && add_asflags -g cv8
             ;;
             linux*|solaris*)
@@ -928,6 +1091,11 @@ process_common_toolchain() {
                 # enabled icc && ! enabled pic && add_cflags -fno-pic -mdynamic-no-pic
                 enabled icc && ! enabled pic && add_cflags -fno-pic
             ;;
+            os2)
+                add_asflags -f aout
+                enabled debug && add_asflags -g
+                EXE_SFX=.exe
+            ;;
             *) log "Warning: Unknown os $tgt_os while setting up $AS flags"
             ;;
         esac
@@ -989,11 +1157,24 @@ EOF
     # Almost every platform uses pthreads.
     if enabled multithread; then
         case ${toolchain} in
-            *-win*);;
+            *-win*-vs*);;
+            *-android-gcc);;
             *) check_header pthread.h && add_extralibs -lpthread
         esac
     fi
 
+    # only for MIPS platforms
+    case ${toolchain} in
+        mips*)
+            if enabled dspr2; then
+                if enabled big_endian; then
+                    echo "dspr2 optimizations are available only for little endian platforms"
+                    disable dspr2
+                fi
+            fi
+        ;;
+    esac
+
     # for sysconf(3) and friends.
     check_header unistd.h
 
@@ -1040,6 +1221,22 @@ print_config_h() {
     done
 }
 
+print_webm_license() {
+    local destination=$1
+    local prefix=$2
+    local suffix=$3
+    shift 3
+    cat <<EOF > ${destination}
+${prefix} Copyright (c) 2011 The WebM project authors. All Rights Reserved.${suffix}
+${prefix} ${suffix}
+${prefix} Use of this source code is governed by a BSD-style license${suffix}
+${prefix} that can be found in the LICENSE file in the root of the source${suffix}
+${prefix} tree. An additional intellectual property rights grant can be found${suffix}
+${prefix} in the file PATENTS.  All contributing project authors may${suffix}
+${prefix} be found in the AUTHORS file in the root of the source tree.${suffix}
+EOF
+}
+
 process_targets() {
     true;
 }
diff --git a/build/make/gen_asm_deps.sh b/build/make/gen_asm_deps.sh
index a75418aa6..0b4e3aa84 100755
--- a/build/make/gen_asm_deps.sh
+++ b/build/make/gen_asm_deps.sh
@@ -42,7 +42,7 @@ done
 
 [ -n "$srcfile" ] || show_help
 sfx=${sfx:-asm}
-includes=$(egrep -i "include +\"?[a-z0-9_/]+\.${sfx}" $srcfile |
+includes=$(LC_ALL=C egrep -i "include +\"?[a-z0-9_/]+\.${sfx}" $srcfile |
            perl -p -e "s;.*?([a-z0-9_/]+.${sfx}).*;\1;")
 #" restore editor state
 for inc in ${includes}; do
diff --git a/build/make/obj_int_extract.c b/build/make/obj_int_extract.c
index fc7460050..f86cec2ac 100644
--- a/build/make/obj_int_extract.c
+++ b/build/make/obj_int_extract.c
@@ -602,7 +602,7 @@ int parse_coff(uint8_t *buf, size_t sz) {
   uint32_t symoffset;
 
   char **sectionlist;  // this array holds all section names in their correct order.
-  // it is used to check if the symbol is in .bss or .data section.
+  // it is used to check if the symbol is in .bss or .rdata section.
 
   nsections = get_le16(buf + 2);
   symtab_ptr = get_le32(buf + 8);
@@ -643,15 +643,15 @@ int parse_coff(uint8_t *buf, size_t sz) {
     }
     strcpy(sectionlist[i], sectionname);
 
-    if (!strcmp(sectionname, ".data")) sectionrawdata_ptr = get_le32(ptr + 20);
+    if (!strcmp(sectionname, ".rdata")) sectionrawdata_ptr = get_le32(ptr + 20);
 
     ptr += 40;
   }
 
   // log_msg("COFF: Symbol table at offset %u\n", symtab_ptr);
-  // log_msg("COFF: raw data pointer ofset for section .data is %u\n", sectionrawdata_ptr);
+  // log_msg("COFF: raw data pointer ofset for section .rdata is %u\n", sectionrawdata_ptr);
 
-  /*  The compiler puts the data with non-zero offset in .data section, but puts the data with
+  /*  The compiler puts the data with non-zero offset in .rdata section, but puts the data with
       zero offset in .bss section. So, if the data in in .bss section, set offset=0.
       Note from Wiki: In an object module compiled from C, the bss section contains
       the local variables (but not functions) that were declared with the static keyword,