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      1 # Copyright 2015 the V8 project authors. All rights reserved.
      2 # Redistribution and use in source and binary forms, with or without
      3 # modification, are permitted provided that the following conditions are
      4 # met:
      5 #
      6 #     * Redistributions of source code must retain the above copyright
      7 #       notice, this list of conditions and the following disclaimer.
      8 #     * Redistributions in binary form must reproduce the above
      9 #       copyright notice, this list of conditions and the following
     10 #       disclaimer in the documentation and/or other materials provided
     11 #       with the distribution.
     12 #     * Neither the name of Google Inc. nor the names of its
     13 #       contributors may be used to endorse or promote products derived
     14 #       from this software without specific prior written permission.
     15 #
     16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 # The snapshot needs to be compiled for the host, but compiled with
     29 # a toolchain that matches the bit-width of the target.
     30 
     31 # TODO(GYP): For now we only support 32-bit little-endian target builds from an
     32 # x64 Linux host. Eventually we need to support all of the host/target
     33 # configurations v8 runs on.
     34 if (host_cpu == "x64" && host_os == "linux") {
     35   if (target_cpu == "arm" || target_cpu == "mipsel" || target_cpu == "x86") {
     36     snapshot_toolchain = "//build/toolchain/linux:clang_x86"
     37   } else if (target_cpu == "x64" || target_cpu == "arm64" || target_cpu == "mips64el") {
     38     snapshot_toolchain = "//build/toolchain/linux:clang_x64"
     39   } else {
     40     assert(false, "Need environment for this arch: $target_cpu")
     41   }
     42 } else {
     43   snapshot_toolchain = default_toolchain
     44 }
     45 
     46 
     47