Build BoringSSL without assembly if using MSan.

third_party/boringssl/boringssl.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'boringssl',
       'type': '<(component)',
       'includes': [
         'boringssl.gypi',
       ],
       'sources': [
         '<@(boringssl_lib_sources)',
       ],
       'defines': [
         'BORINGSSL_IMPLEMENTATION',
         'BORINGSSL_NO_STATIC_INITIALIZER',
       ],
       # TODO(davidben): Fix size_t truncations in BoringSSL.
       # https://crbug.com/429039
       'msvs_disabled_warnings': [ 4267, ],
       'conditions': [
         ['component == "shared_library"', {
           'defines': [
             'BORINGSSL_SHARED_LIBRARY',
           ],
         }],
-        ['target_arch == "arm"', {
+        ['target_arch == "arm" and msan == 0', {
           'conditions': [
             ['OS == "linux" or OS == "android"', {
               'sources': [ '<@(boringssl_linux_arm_sources)' ],
             }, {
               'defines': [ 'OPENSSL_NO_ASM' ],
             }],
           ],
         }],
-        ['target_arch == "arm64"', {
+        ['target_arch == "arm64" and msan == 0', {
           'conditions': [
             ['OS == "linux" or OS == "android"', {
               'sources': [ '<@(boringssl_linux_aarch64_sources)' ],
             }, {
               'defines': [ 'OPENSSL_NO_ASM' ],
             }],
           ],
         }],
-        ['target_arch == "ia32"', {
+        ['target_arch == "ia32" and msan == 0', {
           'conditions': [
             ['OS == "mac" or OS == "ios"', {
               'sources': [ '<@(boringssl_mac_x86_sources)' ],
             }],
             ['OS == "linux" or OS == "android"', {
               'sources': [ '<@(boringssl_linux_x86_sources)' ],
             }],
             ['OS == "win"', {
               'sources': [ '<@(boringssl_win_x86_sources)' ],
               # Windows' assembly is built with Yasm. The other platforms use
               # the platform assembler.
               'variables': {
                 'yasm_output_path': '<(SHARED_INTERMEDIATE_DIR)/third_party/boringssl',
               },
               'includes': [
                 '../yasm/yasm_compile.gypi',
               ],
             }],
             ['OS != "mac" and OS != "ios" and OS != "linux" and OS != "win" and OS != "android"', {
               'defines': [ 'OPENSSL_NO_ASM' ],
             }],
           ]
         }],
-        ['target_arch == "x64"', {
+        ['target_arch == "x64" and msan == 0', {
           'conditions': [
             ['OS == "mac" or OS == "ios"', {
               'sources': [ '<@(boringssl_mac_x86_64_sources)' ],
             }],
             ['OS == "linux" or OS == "android"', {
               'sources': [ '<@(boringssl_linux_x86_64_sources)' ],
             }],
             ['OS == "win"', {
               'sources': [ '<@(boringssl_win_x86_64_sources)' ],
               # Windows' assembly is built with Yasm. The other platforms use
               # the platform assembler.
               'variables': {
                 'yasm_output_path': '<(SHARED_INTERMEDIATE_DIR)/third_party/boringssl',
               },
               'includes': [
                 '../yasm/yasm_compile.gypi',
               ],
             }],
             ['OS != "mac" and OS != "ios" and OS != "linux" and OS != "win" and OS != "android"', {
               'defines': [ 'OPENSSL_NO_ASM' ],
             }],
           ]
         }],
-        ['target_arch != "arm" and target_arch != "ia32" and target_arch != "x64" and target_arch != "arm64"', {
+        ['msan == 1 or (target_arch != "arm" and target_arch != "ia32" and target_arch != "x64" and target_arch != "arm64")', {
           'defines': [ 'OPENSSL_NO_ASM' ],
         }],
       ],
       'include_dirs': [
         'src/include',
         # This is for arm_arch.h, which is needed by some asm files. Since the
         # asm files are generated and kept in a different directory, they
         # cannot use relative paths to find this file.
         'src/crypto',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           'src/include',
         ],
         'conditions': [
           ['component == "shared_library"', {
             'defines': [
               'BORINGSSL_SHARED_LIBRARY',
             ],
           }],
         ],
       },
     },
   ],
 }