[compiler-rt] [compiler-rt] Do not search for sysroots for disabled Darwin targets (PR #161877)

[Nathan Corbyn via llvm-commits]

https://github.com/cofibrant updated https://github.com/llvm/llvm-project/pull/161877

>From f401a66957708a68b012a13fbc83a3e2152ab5f7 Mon Sep 17 00:00:00 2001
From: Nathan Corbyn <n_corbyn at apple.com>
Date: Fri, 3 Oct 2025 17:46:57 +0100
Subject: [PATCH] [compiler-rt] Do not search for sysroots for disabled Darwin
 targets

---
 compiler-rt/cmake/builtin-config-ix.cmake | 20 +++++++++-----------
 compiler-rt/cmake/config-ix.cmake         | 13 ++++++-------
 2 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/compiler-rt/cmake/builtin-config-ix.cmake b/compiler-rt/cmake/builtin-config-ix.cmake
index b86bb1bca7cda..d76f812e8ec21 100644
--- a/compiler-rt/cmake/builtin-config-ix.cmake
+++ b/compiler-rt/cmake/builtin-config-ix.cmake
@@ -115,17 +115,6 @@ include(CompilerRTUtils)
 include(CompilerRTDarwinUtils)
 
 if(APPLE)
-
-  find_darwin_sdk_dir(DARWIN_osx_SYSROOT macosx)
-  find_darwin_sdk_dir(DARWIN_iossim_SYSROOT iphonesimulator)
-  find_darwin_sdk_dir(DARWIN_ios_SYSROOT iphoneos)
-  find_darwin_sdk_dir(DARWIN_watchossim_SYSROOT watchsimulator)
-  find_darwin_sdk_dir(DARWIN_watchos_SYSROOT watchos)
-  find_darwin_sdk_dir(DARWIN_tvossim_SYSROOT appletvsimulator)
-  find_darwin_sdk_dir(DARWIN_tvos_SYSROOT appletvos)
-  find_darwin_sdk_dir(DARWIN_xrossim_SYSROOT xrsimulator)
-  find_darwin_sdk_dir(DARWIN_xros_SYSROOT xros)
-
   # Get supported architecture from SDKSettings.
   function(sdk_has_arch_support sdk_path os arch has_support)
     execute_process(COMMAND
@@ -143,6 +132,7 @@ if(APPLE)
     endif()
   endfunction()
 
+  find_darwin_sdk_dir(DARWIN_osx_SYSROOT macosx)
   set(DARWIN_EMBEDDED_PLATFORMS)
   set(DARWIN_osx_BUILTIN_MIN_VER 10.7)
   set(DARWIN_osx_BUILTIN_MIN_VER_FLAG
@@ -157,6 +147,8 @@ if(APPLE)
   endforeach(arch)
 
   if(COMPILER_RT_ENABLE_IOS)
+    find_darwin_sdk_dir(DARWIN_iossim_SYSROOT iphonesimulator)
+    find_darwin_sdk_dir(DARWIN_ios_SYSROOT iphoneos)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS ios)
     set(DARWIN_ios_MIN_VER_FLAG -miphoneos-version-min)
     set(DARWIN_ios_BUILTIN_MIN_VER 6.0)
@@ -170,6 +162,8 @@ if(APPLE)
     endif()
   endif()
   if(COMPILER_RT_ENABLE_WATCHOS)
+    find_darwin_sdk_dir(DARWIN_watchossim_SYSROOT watchsimulator)
+    find_darwin_sdk_dir(DARWIN_watchos_SYSROOT watchos)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS watchos)
     set(DARWIN_watchos_MIN_VER_FLAG -mwatchos-version-min)
     set(DARWIN_watchos_BUILTIN_MIN_VER 2.0)
@@ -183,6 +177,8 @@ if(APPLE)
     endif()
   endif()
   if(COMPILER_RT_ENABLE_TVOS)
+    find_darwin_sdk_dir(DARWIN_tvossim_SYSROOT appletvsimulator)
+    find_darwin_sdk_dir(DARWIN_tvos_SYSROOT appletvos)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS tvos)
     set(DARWIN_tvos_MIN_VER_FLAG -mtvos-version-min)
     set(DARWIN_tvos_BUILTIN_MIN_VER 9.0)
@@ -196,6 +192,8 @@ if(APPLE)
     endif()
   endif()
   if(COMPILER_RT_ENABLE_XROS)
+    find_darwin_sdk_dir(DARWIN_xrossim_SYSROOT xrsimulator)
+    find_darwin_sdk_dir(DARWIN_xros_SYSROOT xros)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS xros)
     set(DARWIN_xros_BUILTIN_ALL_POSSIBLE_ARCHS ${ARM64} ${ARM32})
     set(DARWIN_xrossim_BUILTIN_ALL_POSSIBLE_ARCHS arm64)
diff --git a/compiler-rt/cmake/config-ix.cmake b/compiler-rt/cmake/config-ix.cmake
index 67db4383ec3dc..a800c43362fe9 100644
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@@ -408,13 +408,6 @@ if(APPLE)
   include(CompilerRTDarwinUtils)
 
   find_darwin_sdk_dir(DARWIN_osx_SYSROOT macosx)
-  find_darwin_sdk_dir(DARWIN_iossim_SYSROOT iphonesimulator)
-  find_darwin_sdk_dir(DARWIN_ios_SYSROOT iphoneos)
-  find_darwin_sdk_dir(DARWIN_watchossim_SYSROOT watchsimulator)
-  find_darwin_sdk_dir(DARWIN_watchos_SYSROOT watchos)
-  find_darwin_sdk_dir(DARWIN_tvossim_SYSROOT appletvsimulator)
-  find_darwin_sdk_dir(DARWIN_tvos_SYSROOT appletvos)
-
   if(NOT DARWIN_osx_SYSROOT)
     message(WARNING "Could not determine OS X sysroot, trying /usr/include")
     if(EXISTS /usr/include)
@@ -425,6 +418,8 @@ if(APPLE)
   endif()
 
   if(COMPILER_RT_ENABLE_IOS)
+    find_darwin_sdk_dir(DARWIN_iossim_SYSROOT iphonesimulator)
+    find_darwin_sdk_dir(DARWIN_ios_SYSROOT iphoneos)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS ios)
     set(DARWIN_ios_MIN_VER 9.0)
     set(DARWIN_ios_MIN_VER_FLAG -miphoneos-version-min)
@@ -435,6 +430,8 @@ if(APPLE)
       ${DARWIN_iossim_MIN_VER_FLAG}=${DARWIN_ios_MIN_VER})
   endif()
   if(COMPILER_RT_ENABLE_WATCHOS)
+    find_darwin_sdk_dir(DARWIN_watchossim_SYSROOT watchsimulator)
+    find_darwin_sdk_dir(DARWIN_watchos_SYSROOT watchos)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS watchos)
     set(DARWIN_watchos_MIN_VER 2.0)
     set(DARWIN_watchos_MIN_VER_FLAG -mwatchos-version-min)
@@ -445,6 +442,8 @@ if(APPLE)
       ${DARWIN_watchossim_MIN_VER_FLAG}=${DARWIN_watchos_MIN_VER})
   endif()
   if(COMPILER_RT_ENABLE_TVOS)
+    find_darwin_sdk_dir(DARWIN_tvossim_SYSROOT appletvsimulator)
+    find_darwin_sdk_dir(DARWIN_tvos_SYSROOT appletvos)
     list(APPEND DARWIN_EMBEDDED_PLATFORMS tvos)
     set(DARWIN_tvos_MIN_VER 9.0)
     set(DARWIN_tvos_MIN_VER_FLAG -mtvos-version-min)