From bc5bcad45e1eaebbea0f1409f096d166cdb778d9 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 18 Jun 2018 13:39:23 -0400
Subject: Xcode: Detect architecture(s) using ARCHS instead of CURRENT_ARCH

Xcode 10 no longer populates `CURRENT_ARCH` with the current
architecture in shell scripts and instead uses `undefined_arch`.
Instead we must use `ARCHS`.  It lists all architectures separated by
spaces.

Fixes: #18085
---
 Modules/CMakeCCompiler.cmake.in         | 2 +-
 Modules/CMakeCXXCompiler.cmake.in       | 2 +-
 Modules/CMakeDetermineCCompiler.cmake   | 6 +++---
 Modules/CMakeDetermineCXXCompiler.cmake | 6 +++---
 Modules/CMakeDetermineCompilerId.cmake  | 8 +++++---
 Modules/CompilerId/Xcode-3.pbxproj.in   | 2 +-
 6 files changed, 14 insertions(+), 12 deletions(-)

(limited to 'Modules')

diff --git a/Modules/CMakeCCompiler.cmake.in b/Modules/CMakeCCompiler.cmake.in
index 8ad0c01d29..72144cf317 100644
--- a/Modules/CMakeCCompiler.cmake.in
+++ b/Modules/CMakeCCompiler.cmake.in
@@ -15,7 +15,7 @@ set(CMAKE_C_SIMULATE_ID "@CMAKE_C_SIMULATE_ID@")
 set(CMAKE_C_SIMULATE_VERSION "@CMAKE_C_SIMULATE_VERSION@")
 @_SET_CMAKE_C_COMPILER_ARCHITECTURE_ID@
 @SET_MSVC_C_ARCHITECTURE_ID@
-@SET_CMAKE_XCODE_CURRENT_ARCH@
+@SET_CMAKE_XCODE_ARCHS@
 set(CMAKE_AR "@CMAKE_AR@")
 set(CMAKE_C_COMPILER_AR "@CMAKE_C_COMPILER_AR@")
 set(CMAKE_RANLIB "@CMAKE_RANLIB@")
diff --git a/Modules/CMakeCXXCompiler.cmake.in b/Modules/CMakeCXXCompiler.cmake.in
index 974886df74..8da6a8c1dc 100644
--- a/Modules/CMakeCXXCompiler.cmake.in
+++ b/Modules/CMakeCXXCompiler.cmake.in
@@ -17,7 +17,7 @@ set(CMAKE_CXX_SIMULATE_ID "@CMAKE_CXX_SIMULATE_ID@")
 set(CMAKE_CXX_SIMULATE_VERSION "@CMAKE_CXX_SIMULATE_VERSION@")
 @_SET_CMAKE_CXX_COMPILER_ARCHITECTURE_ID@
 @SET_MSVC_CXX_ARCHITECTURE_ID@
-@SET_CMAKE_XCODE_CURRENT_ARCH@
+@SET_CMAKE_XCODE_ARCHS@
 set(CMAKE_AR "@CMAKE_AR@")
 set(CMAKE_CXX_COMPILER_AR "@CMAKE_CXX_COMPILER_AR@")
 set(CMAKE_RANLIB "@CMAKE_RANLIB@")
diff --git a/Modules/CMakeDetermineCCompiler.cmake b/Modules/CMakeDetermineCCompiler.cmake
index 7e6ca1edfb..17706ea504 100644
--- a/Modules/CMakeDetermineCCompiler.cmake
+++ b/Modules/CMakeDetermineCCompiler.cmake
@@ -183,9 +183,9 @@ if(MSVC_C_ARCHITECTURE_ID)
     "set(MSVC_C_ARCHITECTURE_ID ${MSVC_C_ARCHITECTURE_ID})")
 endif()
 
-if(CMAKE_C_XCODE_CURRENT_ARCH)
-  set(SET_CMAKE_XCODE_CURRENT_ARCH
-    "set(CMAKE_XCODE_CURRENT_ARCH ${CMAKE_C_XCODE_CURRENT_ARCH})")
+if(CMAKE_C_XCODE_ARCHS)
+  set(SET_CMAKE_XCODE_ARCHS
+    "set(CMAKE_XCODE_ARCHS \"${CMAKE_C_XCODE_ARCHS}\")")
 endif()
 
 # configure variables set in this file for fast reload later on
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake
index c0fb3b6bda..70d17a1810 100644
--- a/Modules/CMakeDetermineCXXCompiler.cmake
+++ b/Modules/CMakeDetermineCXXCompiler.cmake
@@ -181,9 +181,9 @@ if(MSVC_CXX_ARCHITECTURE_ID)
     "set(MSVC_CXX_ARCHITECTURE_ID ${MSVC_CXX_ARCHITECTURE_ID})")
 endif()
 
-if(CMAKE_CXX_XCODE_CURRENT_ARCH)
-  set(SET_CMAKE_XCODE_CURRENT_ARCH
-    "set(CMAKE_XCODE_CURRENT_ARCH ${CMAKE_CXX_XCODE_CURRENT_ARCH})")
+if(CMAKE_CXX_XCODE_ARCHS)
+  set(SET_CMAKE_XCODE_ARCHS
+    "set(CMAKE_XCODE_ARCHS \"${CMAKE_CXX_XCODE_ARCHS}\")")
 endif()
 
 # configure all variables set in this file
diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake
index 1628203ecc..16dde65fb1 100644
--- a/Modules/CMakeDetermineCompilerId.cmake
+++ b/Modules/CMakeDetermineCompilerId.cmake
@@ -121,7 +121,7 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
   set(CMAKE_${lang}_COMPILER_ARCHITECTURE_ID "${CMAKE_${lang}_COMPILER_ARCHITECTURE_ID}" PARENT_SCOPE)
   set(MSVC_${lang}_ARCHITECTURE_ID "${MSVC_${lang}_ARCHITECTURE_ID}"
     PARENT_SCOPE)
-  set(CMAKE_${lang}_XCODE_CURRENT_ARCH "${CMAKE_${lang}_XCODE_CURRENT_ARCH}" PARENT_SCOPE)
+  set(CMAKE_${lang}_XCODE_ARCHS "${CMAKE_${lang}_XCODE_ARCHS}" PARENT_SCOPE)
   set(CMAKE_${lang}_CL_SHOWINCLUDES_PREFIX "${CMAKE_${lang}_CL_SHOWINCLUDES_PREFIX}" PARENT_SCOPE)
   set(CMAKE_${lang}_COMPILER_VERSION "${CMAKE_${lang}_COMPILER_VERSION}" PARENT_SCOPE)
   set(CMAKE_${lang}_COMPILER_VERSION_INTERNAL "${CMAKE_${lang}_COMPILER_VERSION_INTERNAL}" PARENT_SCOPE)
@@ -380,8 +380,10 @@ Id flags: ${testflags} ${CMAKE_${lang}_COMPILER_ID_FLAGS_ALWAYS}
         endif()
       endif()
     endif()
-    if("${CMAKE_${lang}_COMPILER_ID_OUTPUT}" MATCHES "CURRENT_ARCH=([^%\r\n]+)[\r\n]")
-      set(CMAKE_${lang}_XCODE_CURRENT_ARCH "${CMAKE_MATCH_1}" PARENT_SCOPE)
+    if("${CMAKE_${lang}_COMPILER_ID_OUTPUT}" MATCHES "ARCHS=([^%\r\n]+)[\r\n]")
+      set(CMAKE_${lang}_XCODE_ARCHS "${CMAKE_MATCH_1}")
+      separate_arguments(CMAKE_${lang}_XCODE_ARCHS)
+      set(CMAKE_${lang}_XCODE_ARCHS "${CMAKE_${lang}_XCODE_ARCHS}" PARENT_SCOPE)
     endif()
   else()
     execute_process(
diff --git a/Modules/CompilerId/Xcode-3.pbxproj.in b/Modules/CompilerId/Xcode-3.pbxproj.in
index 1cbaa578b5..94bcbf868f 100644
--- a/Modules/CompilerId/Xcode-3.pbxproj.in
+++ b/Modules/CompilerId/Xcode-3.pbxproj.in
@@ -58,7 +58,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "echo \"GCC_VERSION=$GCC_VERSION\" ; echo \"CURRENT_ARCH=$CURRENT_ARCH\"";
+			shellScript = "echo \"GCC_VERSION=$GCC_VERSION\" ; echo \"ARCHS=$ARCHS\"";
 			showEnvVarsInLog = 0;
 		};
 		2C18F0B515DC1DCE00593670 = {
-- 
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