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- # Copyright 2016 Google Inc.
- #
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
- declare_args() {
- skia_use_system_libpng = is_official_build
- }
- import("../third_party.gni")
- if (skia_use_system_libpng) {
- system("libpng") {
- libs = [ "png" ]
- }
- } else {
- third_party("libpng") {
- public_include_dirs = [
- ".",
- "../externals/libpng",
- ]
- defines = [ "PNG_SET_OPTION_SUPPORTED" ]
- deps = [
- "//third_party/zlib",
- ]
- sources = [
- "../externals/libpng/png.c",
- "../externals/libpng/pngerror.c",
- "../externals/libpng/pngget.c",
- "../externals/libpng/pngmem.c",
- "../externals/libpng/pngpread.c",
- "../externals/libpng/pngread.c",
- "../externals/libpng/pngrio.c",
- "../externals/libpng/pngrtran.c",
- "../externals/libpng/pngrutil.c",
- "../externals/libpng/pngset.c",
- "../externals/libpng/pngtrans.c",
- "../externals/libpng/pngwio.c",
- "../externals/libpng/pngwrite.c",
- "../externals/libpng/pngwtran.c",
- "../externals/libpng/pngwutil.c",
- ]
- if (current_cpu == "arm" || current_cpu == "arm64") {
- sources += [
- "../externals/libpng/arm/arm_init.c",
- "../externals/libpng/arm/filter_neon_intrinsics.c",
- "../externals/libpng/arm/palette_neon_intrinsics.c",
- ]
- }
- if (current_cpu == "x86" || current_cpu == "x64") {
- defines += [ "PNG_INTEL_SSE" ]
- sources += [
- "../externals/libpng/intel/filter_sse2_intrinsics.c",
- "../externals/libpng/intel/intel_init.c",
- ]
- }
- }
- }
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