Add a snapshot of flutter/engine/src/build to our sdk

build/secondary/third_party/libjpeg_turbo/BUILD.gn

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Do not use the targets in this file unless you need a certain libjpeg
+# implementation. Use the meta target //third_party:jpeg instead.
+
+import("//build/config/sanitizers/sanitizers.gni")
+
+if (current_cpu == "arm") {
+  import("//build/config/arm.gni")
+}
+
+if (current_cpu == "x86" || current_cpu == "x64") {
+  import("//third_party/yasm/yasm_assemble.gni")
+
+  yasm_assemble("simd_asm") {
+    defines = []
+
+    if (current_cpu == "x86") {
+      sources = [
+        "simd/jccolor-mmx.asm",
+        "simd/jccolor-sse2.asm",
+        "simd/jcgray-mmx.asm",
+        "simd/jcgray-sse2.asm",
+        "simd/jchuff-sse2.asm",
+        "simd/jcsample-mmx.asm",
+        "simd/jcsample-sse2.asm",
+        "simd/jdcolor-mmx.asm",
+        "simd/jdcolor-sse2.asm",
+        "simd/jdmerge-mmx.asm",
+        "simd/jdmerge-sse2.asm",
+        "simd/jdsample-mmx.asm",
+        "simd/jdsample-sse2.asm",
+        "simd/jfdctflt-3dn.asm",
+        "simd/jfdctflt-sse.asm",
+        "simd/jfdctfst-mmx.asm",
+        "simd/jfdctfst-sse2.asm",
+        "simd/jfdctint-mmx.asm",
+        "simd/jfdctint-sse2.asm",
+        "simd/jidctflt-3dn.asm",
+        "simd/jidctflt-sse.asm",
+        "simd/jidctflt-sse2.asm",
+        "simd/jidctfst-mmx.asm",
+        "simd/jidctfst-sse2.asm",
+        "simd/jidctint-mmx.asm",
+        "simd/jidctint-sse2.asm",
+        "simd/jidctred-mmx.asm",
+        "simd/jidctred-sse2.asm",
+        "simd/jquant-3dn.asm",
+        "simd/jquant-mmx.asm",
+        "simd/jquant-sse.asm",
+        "simd/jquantf-sse2.asm",
+        "simd/jquanti-sse2.asm",
+        "simd/jsimdcpu.asm",
+      ]
+      defines += [
+        "__x86__",
+        "PIC",
+      ]
+    } else if (current_cpu == "x64") {
+      sources = [
+        "simd/jccolor-sse2-64.asm",
+        "simd/jcgray-sse2-64.asm",
+        "simd/jchuff-sse2-64.asm",
+        "simd/jcsample-sse2-64.asm",
+        "simd/jdcolor-sse2-64.asm",
+        "simd/jdmerge-sse2-64.asm",
+        "simd/jdsample-sse2-64.asm",
+        "simd/jfdctflt-sse-64.asm",
+        "simd/jfdctfst-sse2-64.asm",
+        "simd/jfdctint-sse2-64.asm",
+        "simd/jidctflt-sse2-64.asm",
+        "simd/jidctfst-sse2-64.asm",
+        "simd/jidctint-sse2-64.asm",
+        "simd/jidctred-sse2-64.asm",
+        "simd/jquantf-sse2-64.asm",
+        "simd/jquanti-sse2-64.asm",
+      ]
+      defines += [
+        "__x86_64__",
+        "PIC",
+      ]
+    }
+
+    if (is_win) {
+      defines += [ "MSVC" ]
+      include_dirs = [ "win" ]
+      if (current_cpu == "x86") {
+        defines += [ "WIN32" ]
+      } else {
+        defines += [ "WIN64" ]
+      }
+    } else if (is_mac) {
+      defines += [ "MACHO" ]
+      include_dirs = [ "mac" ]
+    } else if (is_linux || is_android) {
+      defines += [ "ELF" ]
+      include_dirs = [ "linux" ]
+    }
+  }
+}
+
+source_set("simd") {
+  if (current_cpu == "x86") {
+    deps = [
+      ":simd_asm",
+    ]
+    sources = [
+      "simd/jsimd_i386.c",
+    ]
+    if (is_win) {
+      cflags = [ "/wd4245" ]
+    }
+  } else if (current_cpu == "x64") {
+    deps = [
+      ":simd_asm",
+    ]
+    sources = [
+      "simd/jsimd_x86_64.c",
+    ]
+  } else if (current_cpu == "arm" && arm_version >= 7 &&
+             (arm_use_neon || arm_optionally_use_neon)) {
+    sources = [
+      "simd/jsimd_arm.c",
+      "simd/jsimd_arm_neon.S",
+    ]
+  } else {
+    sources = [
+      "jsimd_none.c",
+    ]
+  }
+  if (is_win) {
+    cflags = [ "/wd4245" ]
+  }
+}
+
+config("libjpeg_config") {
+  include_dirs = [ "." ]
+}
+
+source_set("libjpeg") {
+  sources = [
+    "jcapimin.c",
+    "jcapistd.c",
+    "jccoefct.c",
+    "jccolor.c",
+    "jcdctmgr.c",
+    "jchuff.c",
+    "jchuff.h",
+    "jcinit.c",
+    "jcmainct.c",
+    "jcmarker.c",
+    "jcmaster.c",
+    "jcomapi.c",
+    "jconfig.h",
+    "jcparam.c",
+    "jcphuff.c",
+    "jcprepct.c",
+    "jcsample.c",
+    "jdapimin.c",
+    "jdapistd.c",
+    "jdatadst.c",
+    "jdatasrc.c",
+    "jdcoefct.c",
+    "jdcolor.c",
+    "jdct.h",
+    "jddctmgr.c",
+    "jdhuff.c",
+    "jdhuff.h",
+    "jdinput.c",
+    "jdmainct.c",
+    "jdmarker.c",
+    "jdmaster.c",
+    "jdmerge.c",
+    "jdphuff.c",
+    "jdpostct.c",
+    "jdsample.c",
+    "jerror.c",
+    "jerror.h",
+    "jfdctflt.c",
+    "jfdctfst.c",
+    "jfdctint.c",
+    "jidctflt.c",
+    "jidctfst.c",
+    "jidctint.c",
+    "jidctred.c",
+    "jinclude.h",
+    "jmemmgr.c",
+    "jmemnobs.c",
+    "jmemsys.h",
+    "jmorecfg.h",
+    "jpegint.h",
+    "jpeglib.h",
+    "jpeglibmangler.h",
+    "jquant1.c",
+    "jquant2.c",
+    "jutils.c",
+    "jversion.h",
+  ]
+
+  defines = [
+    "WITH_SIMD",
+    "NO_GETENV",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
+  public_configs = [ ":libjpeg_config" ]
+
+  # MemorySanitizer doesn't support assembly code, so keep it disabled in
+  # MSan builds for now.
+  if (is_msan) {
+    sources += [ "jsimd_none.c" ]
+  } else {
+    deps = [
+      ":simd",
+    ]
+  }
+}