[libcxx-commits] [PATCH] D158214: [libc++] Warn if an unsupported compiler is used

[Louis Dionne via Phabricator via libcxx-commits]

ldionne updated this revision to Diff 557081.
ldionne added a comment.

Encode the real version of Clang that we support right now.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158214/new/

https://reviews.llvm.org/D158214

Files:
  libcxx/include/__config


Index: libcxx/include/__config
===================================================================
--- libcxx/include/__config
+++ libcxx/include/__config
@@ -25,10 +25,27 @@
 #  define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__)
 #elif defined(__GNUC__)
 #  define _LIBCPP_COMPILER_GCC
+#  define _LIBCPP_GCC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
 #endif
 
 #ifdef __cplusplus
 
+// Warn if a compiler version is used that is not supported anymore
+// LLVM RELEASE Update the minimum compiler versions
+#  if defined(_LIBCPP_CLANG_VER)
+#    if _LIBCPP_CLANG_VER < 1500
+#      warning "Libc++ only supports Clang 15 and later"
+#    endif
+#  elif defined(_LIBCPP_APPLE_CLANG_VER)
+#    if _LIBCPP_APPLE_CLANG_VER < 1400
+#      warning "Libc++ only supports AppleClang 14 and later"
+#    endif
+#  elif defined(_LIBCPP_GCC_VER)
+#    if _LIBCPP_GCC_VER < 1300
+#      warning "Libc++ only supports GCC 13 and later"
+#    endif
+#  endif
+
 // The attributes supported by clang are documented at https://clang.llvm.org/docs/AttributeReference.html
 
 // _LIBCPP_VERSION represents the version of libc++, which matches the version of LLVM.


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