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      1 # Copyright 2016 Google Inc.
      2 #
      3 # Use of this source code is governed by a BSD-style license that can be
      4 # found in the LICENSE file.
      5 
      6 declare_args() {
      7   skia_use_system_zlib = is_official_build
      8 }
      9 
     10 import("../third_party.gni")
     11 
     12 if (skia_use_system_zlib) {
     13   system("zlib") {
     14     libs = [ "z" ]
     15   }
     16 } else {
     17   third_party("zlib") {
     18     public_include_dirs = [ "../externals/zlib" ]
     19 
     20     deps = [
     21       ":zlib_x86",
     22     ]
     23     sources = [
     24       "../externals/zlib/adler32.c",
     25       "../externals/zlib/compress.c",
     26       "../externals/zlib/crc32.c",
     27       "../externals/zlib/deflate.c",
     28       "../externals/zlib/gzclose.c",
     29       "../externals/zlib/gzlib.c",
     30       "../externals/zlib/gzread.c",
     31       "../externals/zlib/gzwrite.c",
     32       "../externals/zlib/infback.c",
     33       "../externals/zlib/inffast.c",
     34       "../externals/zlib/inflate.c",
     35       "../externals/zlib/inftrees.c",
     36       "../externals/zlib/trees.c",
     37       "../externals/zlib/uncompr.c",
     38       "../externals/zlib/zutil.c",
     39     ]
     40   }
     41 }
     42 
     43 third_party("zlib_x86") {
     44   public_include_dirs = []
     45   if (target_cpu == "x86" || target_cpu == "x64") {
     46     sources = [
     47       "../externals/zlib/crc_folding.c",
     48       "../externals/zlib/fill_window_sse.c",
     49       "../externals/zlib/x86.c",
     50     ]
     51     if (!is_win) {
     52       cflags_c = [
     53         "-msse4.2",
     54         "-mpclmul",
     55       ]
     56     }
     57   } else {
     58     sources = [
     59       "../externals/zlib/simd_stub.c",
     60     ]
     61   }
     62 }
     63