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-rw-r--r--Source/cmGlobalXCodeGenerator.cxx12
1 files changed, 11 insertions, 1 deletions
diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index e006be2..65828ce 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -12,6 +12,7 @@
#include <cm/memory>
#include <cmext/algorithm>
+#include <cmext/string_view>
#include "cmsys/RegularExpression.hxx"
@@ -3118,6 +3119,14 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
if (archs.empty()) {
// Tell Xcode to use NATIVE_ARCH instead of ARCHS.
buildSettings->AddAttribute("ONLY_ACTIVE_ARCH", this->CreateString("YES"));
+ // When targeting macOS, use only the host architecture.
+ if (this->SystemName == "Darwin"_s &&
+ (!sysroot || !*sysroot ||
+ cmSystemTools::LowerCase(sysroot).find("macos") !=
+ std::string::npos)) {
+ buildSettings->AddAttribute("ARCHS",
+ this->CreateString("$(NATIVE_ARCH_ACTUAL)"));
+ }
} else {
// Tell Xcode to use ARCHS (ONLY_ACTIVE_ARCH defaults to NO).
buildSettings->AddAttribute("ARCHS", this->CreateString(archs));
@@ -3217,7 +3226,8 @@ void cmGlobalXCodeGenerator::ComputeArchitectures(cmMakefile* mf)
}
if (this->Architectures.empty()) {
- // With no ARCHS we use ONLY_ACTIVE_ARCH.
+ // With no ARCHS we use ONLY_ACTIVE_ARCH and possibly a
+ // platform-specific default ARCHS placeholder value.
// Look up the arch that Xcode chooses in this case.
if (const char* arch = mf->GetDefinition("CMAKE_XCODE_ARCHS")) {
this->ObjectDirArchDefault = arch;