Configure: add ios64 target.

Reviewed-by: Steve Marquess <marquess@openssl.org>
(cherry picked from commit b06f7d9ac0)

Configure

@@ -581,7 +581,22 @@ my %table=(
 "darwin64-x86_64-cc","cc:-arch x86_64 -O3 -DL_ENDIAN -Wall::-D_REENTRANT:MACOSX:-Wl,-search_paths_first%:SIXTY_FOUR_BIT_LONG RC4_CHAR RC4_CHUNK DES_INT DES_UNROLL:${x86_64_asm}:macosx:dlfcn:darwin-shared:-fPIC -fno-common:-arch x86_64 -dynamiclib:.\$(SHLIB_MAJOR).\$(SHLIB_MINOR).dylib",
 "debug-darwin-ppc-cc","cc:-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DB_ENDIAN -g -Wall -O::-D_REENTRANT:MACOSX::BN_LLONG RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:${ppc32_asm}:osx32:dlfcn:darwin-shared:-fPIC:-dynamiclib:.\$(SHLIB_MAJOR).\$(SHLIB_MINOR).dylib",
 # iPhoneOS/iOS
-"iphoneos-cross","llvm-gcc:-O3 -isysroot \$(CROSS_TOP)/SDKs/\$(CROSS_SDK) -fomit-frame-pointer -fno-common::-D_REENTRANT:iOS:-Wl,-search_paths_first%:BN_LLONG RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:${no_asm}:dlfcn:darwin-shared:-fPIC -fno-common:-dynamiclib:.\$(SHLIB_MAJOR).\$(SHLIB_MINOR).dylib",
+#
+# It takes three prior-set environment variables to make it work:
+#
+# CROSS_COMPILE=/where/toolchain/is/usr/bin/ [note ending slash]
+# CROSS_TOP=/where/SDKs/are
+# CROSS_SDK=iPhoneOSx.y.sdk
+#
+# Exact paths vary with Xcode releases, but for couple of last ones
+# they would look like this:
+#
+# CROSS_COMPILE=`xcode-select --print-path`/Toolchains/XcodeDefault.xctoolchain/usr/bin/
+# CROSS_TOP=`xcode-select --print-path`/Platforms/iPhoneOS.platform/Developer
+# CROSS_SDK=iPhoneOS7.0.sdk
+#
+"iphoneos-cross","cc:-O3 -isysroot \$(CROSS_TOP)/SDKs/\$(CROSS_SDK) -fomit-frame-pointer -fno-common::-D_REENTRANT:iOS:-Wl,-search_paths_first%:BN_LLONG RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:${no_asm}:dlfcn:darwin-shared:-fPIC -fno-common:-dynamiclib:.\$(SHLIB_MAJOR).\$(SHLIB_MINOR).dylib",
+"ios64-cross","cc:-O3 -arch arm64 -mios-version-min=7.0.0 -isysroot \$(CROSS_TOP)/SDKs/\$(CROSS_SDK) -fno-common::-D_REENTRANT:iOS:-Wl,-search_paths_first%:SIXTY_FOUR_BIT_LONG RC4_CHAR -RC4_CHUNK DES_INT DES_UNROLL -BF_PTR:${no_asm}:dlfcn:darwin-shared:-fPIC -fno-common:-dynamiclib:.\$(SHLIB_MAJOR).\$(SHLIB_MINOR).dylib",
 
 ##### A/UX
 "aux3-gcc","gcc:-O2 -DTERMIO::(unknown):AUX:-lbsd:RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:::",

TABLE

@@ -3465,8 +3465,42 @@ $ranlib       =
 $arflags      = 
 $multilib     = 
 
+*** ios64-cross
+$cc           = cc
+$cflags       = -O3 -arch arm64 -mios-version-min=7.0.0 -isysroot $(CROSS_TOP)/SDKs/$(CROSS_SDK) -fno-common
+$unistd       = 
+$thread_cflag = -D_REENTRANT
+$sys_id       = iOS
+$lflags       = -Wl,-search_paths_first%
+$bn_ops       = SIXTY_FOUR_BIT_LONG RC4_CHAR -RC4_CHUNK DES_INT DES_UNROLL -BF_PTR
+$cpuid_obj    = 
+$bn_obj       = 
+$ec_obj       = 
+$des_obj      = 
+$aes_obj      = 
+$bf_obj       = 
+$md5_obj      = 
+$sha1_obj     = 
+$cast_obj     = 
+$rc4_obj      = 
+$rmd160_obj   = 
+$rc5_obj      = 
+$wp_obj       = 
+$cmll_obj     = 
+$modes_obj    = 
+$engines_obj  = 
+$perlasm_scheme = void
+$dso_scheme   = dlfcn
+$shared_target= darwin-shared
+$shared_cflag = -fPIC -fno-common
+$shared_ldflag = -dynamiclib
+$shared_extension = .$(SHLIB_MAJOR).$(SHLIB_MINOR).dylib
+$ranlib       = 
+$arflags      = 
+$multilib     = 
+
 *** iphoneos-cross
-$cc           = llvm-gcc
+$cc           = cc
 $cflags       = -O3 -isysroot $(CROSS_TOP)/SDKs/$(CROSS_SDK) -fomit-frame-pointer -fno-common
 $unistd       = 
 $thread_cflag = -D_REENTRANT

config

@@ -576,6 +576,8 @@ case "$GUESSOS" in
   *-*-iphoneos)
 	options="$options -arch%20${MACHINE}"
 	OUT="iphoneos-cross" ;;
+  arm64-*-iphoneos|*-*-ios64)
+	OUT="ios64-cross" ;;
   alpha-*-linux2)
         ISA=`awk '/cpu model/{print$4;exit(0);}' /proc/cpuinfo`
 	case ${ISA:-generic} in