For PR619:

[oota-llvm.git] / autoconf / configure.ac

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 0c184516e3dac33ebf3a4d8829e86c03008b5818..661fc1d350124554058c4a06dc67054007bcd9cc 100644 (file)
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -634,6 +634,10 @@ dnl===
 dnl===-----------------------------------------------------------------------===
 
 dnl Configure header files
+dnl WARNING: dnl If you add or remove any of the following config headers, then
+dnl you MUST also update Makefile.rules so that the variable FilesToConfig
+dnl contains the same list of files as AC_CONFIG_HEADERS below. This ensures the
+dnl files can be updated automatically when their *.in sources change.
 AC_CONFIG_HEADERS([include/llvm/Config/config.h])
 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
 AC_CONFIG_HEADERS([include/llvm/ADT/hash_map])