Adds support for compiling OpenSSL on mac.

openssl.gypi

Index: openssl.gypi
diff --git a/openssl.gypi b/openssl.gypi
index 856b72ef9ef1a51e0bb79c4e4f1295846d9fbf23..8ff13664b04684cb2e10a92a103edb8c024daf36 100644
--- a/openssl.gypi
+++ b/openssl.gypi
@@ -688,5 +688,47 @@
       'DES_UNROLL',
       'OPENSSL_CPUID_OBJ',
     ],
+    'openssl_mac_ia32_source_excludes': [
+      'openssl/crypto/aes/aes_core.c',
+      'openssl/crypto/aes/aes_cbc.c',
+      'openssl/crypto/bf/bf_enc.c',
+      'openssl/crypto/bn/bn_asm.c',
+      'openssl/crypto/des/des_enc.c',
+      'openssl/crypto/des/fcrypt_b.c',
+      'openssl/crypto/mem_clr.c',
+    ],
+    'openssl_mac_ia32_sources': [
+      'openssl/crypto/aes/asm/aes-586-mac.S',
+      'openssl/crypto/aes/asm/aesni-x86-mac.S',
+      'openssl/crypto/aes/asm/vpaes-x86-mac.S',
+      'openssl/crypto/bf/asm/bf-586-mac.S',
+      'openssl/crypto/bn/asm/bn-586-mac.S',
+      'openssl/crypto/bn/asm/co-586-mac.S',
+      'openssl/crypto/bn/asm/x86-gf2m-mac.S',
+      'openssl/crypto/bn/asm/x86-mont-mac.S',
+      'openssl/crypto/des/asm/crypt586-mac.S',
+      'openssl/crypto/des/asm/des-586-mac.S',
+      'openssl/crypto/md5/asm/md5-586-mac.S',
+      'openssl/crypto/modes/asm/ghash-x86-mac.S',
+      'openssl/crypto/sha/asm/sha1-586-mac.S',
+      'openssl/crypto/sha/asm/sha256-586-mac.S',
+      'openssl/crypto/sha/asm/sha512-586-mac.S',
+      'openssl/crypto/x86cpuid-mac.S',
+    ],
+    'openssl_mac_ia32_defines': [
+      'OPENSSL_BN_ASM_GF2m',
+      'OPENSSL_BN_ASM_MONT',
+      'OPENSSL_BN_ASM_PART_WORDS',
+      'AES_ASM',
+      'GHASH_ASM',
+      'SHA1_ASM',
+      'SHA256_ASM',
+      'SHA512_ASM',
+      'MD5_ASM',
+      'DES_PTR',
+      'DES_RISC1',
+      'DES_UNROLL',
+      'OPENSSL_CPUID_OBJ',
+    ],
   }
 }