Add a configure option to pass -std=c++11 on the command line.

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

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 7d36a06f14bbd16c3162d8a5b9e3ef7797d164a8..48ebc62255c89d19e4dd752adf7c1d322bff5c0f 100644 (file)
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -463,6 +463,18 @@ case "$enableval" in
   *) AC_MSG_ERROR([Invalid setting for --enable-libcpp. Use "yes" or "no"]) ;;
 esac
 
+dnl --enable-cxx11 : check whether or not to use -std=c++11 on the command line
+AC_ARG_ENABLE(cxx11,
+              AS_HELP_STRING([--enable-cxx11],
+                             [Use c++11 if available (default is NO)]),,
+                             enableval=default)
+case "$enableval" in
+  yes) AC_SUBST(ENABLE_CXX11,[1]) ;;
+  no)  AC_SUBST(ENABLE_CXX11,[0]) ;;
+  default) AC_SUBST(ENABLE_CXX11,[0]);;
+  *) AC_MSG_ERROR([Invalid setting for --enable-cxx11. Use "yes" or "no"]) ;;
+esac
+
 dnl --enable-optimized : check whether they want to do an optimized build:
 AC_ARG_ENABLE(optimized, AS_HELP_STRING(
  --enable-optimized,[Compile with optimizations enabled (default is NO)]),,enableval=$optimize)