From 9b508e3ad2eaa3787471dd0a56a44662ccc0b7b8 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Wed, 29 Jan 2025 04:15:17 +0200
Subject: [PATCH] Disable <=> tests when <compare> isn't available

---
 test/array_thw_test.cpp    | 11 +++++++++++
 test/array_thw_test_cx.cpp | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/test/array_thw_test.cpp b/test/array_thw_test.cpp
index 8f10368d..dca9d8c7 100644
--- a/test/array_thw_test.cpp
+++ b/test/array_thw_test.cpp
@@ -8,6 +8,12 @@
 #include <boost/config/pragma_message.hpp>
 #include <cstddef>
 
+#if defined(__has_include)
+# if __has_include(<compare>)
+#  define HAS_COMPARE
+# endif
+#endif
+
 #if !defined(__cpp_impl_three_way_comparison)
 
 BOOST_PRAGMA_MESSAGE( "Test skipped because __cpp_impl_three_way_comparison is not defined" )
@@ -18,6 +24,11 @@ int main() {}
 BOOST_PRAGMA_MESSAGE( "Test skipped because __cpp_impl_three_way_comparison is defined to " BOOST_STRINGIZE(__cpp_impl_three_way_comparison) )
 int main() {}
 
+#elif !defined(HAS_COMPARE)
+
+BOOST_PRAGMA_MESSAGE( "Test skipped because <compare> is not available" )
+int main() {}
+
 #else
 
 template<class T, std::size_t N> void test()
diff --git a/test/array_thw_test_cx.cpp b/test/array_thw_test_cx.cpp
index 6b509385..dde5f654 100644
--- a/test/array_thw_test_cx.cpp
+++ b/test/array_thw_test_cx.cpp
@@ -8,6 +8,12 @@
 #include <boost/config/workaround.hpp>
 #include <cstddef>
 
+#if defined(__has_include)
+# if __has_include(<compare>)
+#  define HAS_COMPARE
+# endif
+#endif
+
 #if !defined(__cpp_impl_three_way_comparison)
 
 BOOST_PRAGMA_MESSAGE( "Test skipped because __cpp_impl_three_way_comparison is not defined" )
@@ -18,6 +24,11 @@ int main() {}
 BOOST_PRAGMA_MESSAGE( "Test skipped because __cpp_impl_three_way_comparison is defined to " BOOST_STRINGIZE(__cpp_impl_three_way_comparison) )
 int main() {}
 
+#elif !defined(HAS_COMPARE)
+
+BOOST_PRAGMA_MESSAGE( "Test skipped because <compare> is not available" )
+int main() {}
+
 #else
 
 #define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)