INSTALL: typos and grammar

[lyx.git] / config / lyxinclude.m4

diff --git a/config/lyxinclude.m4 b/config/lyxinclude.m4
index e532c54d87e17a576784b0a3ab8a6a3d6e9e7f15..2e529ea22121254980535454fc584abfbd43c660 100644 (file)
--- a/config/lyxinclude.m4
+++ b/config/lyxinclude.m4
@@ -232,6 +232,10 @@ AC_ARG_ENABLE(pch,
        enable_pch=no;)
 lyx_pch_comp=no
 
+AC_ARG_ENABLE(cxx11,
+  AC_HELP_STRING([--enable-cxx11],[enable C++11 mode]),,
+  enable_cxx11=no;)
+
 AC_ARG_ENABLE(assertions,
   AC_HELP_STRING([--enable-assertions],[add runtime sanity checks in the program]),,
   [AS_CASE([$build_type], [dev*|pre*], [enable_assertions=yes],
@@ -306,6 +310,18 @@ if test x$GXX = xyes; then
        ;;
     esac
   fi
+  if test x$enable_cxx11 = xyes ; then
+      case $gxx_version in
+         4.3*|4.4*|4.5*|4.6*)
+             lyx_flags="$lyx_flags c++11-mode"
+             CXXFLAGS="-std=gnu++0x $CXXFLAGS"
+             ;;
+         4.7*|4.8*)
+             lyx_flags="$lyx_flags c++11-mode"
+             CXXFLAGS="-std=gnu++11 $CXXFLAGS"
+             ;;
+      esac
+  fi
 fi
 test "$lyx_pch_comp" = yes && lyx_flags="$lyx_flags pch"
 AM_CONDITIONAL(LYX_BUILD_PCH, test "$lyx_pch_comp" = yes)