Disable deprecated-copy warning with clang10

This was already done for gcc9 and saves tons of warnings.

Note that the warning in Qt are gone with Qt5.13, so eventually we
will have to get rid of our own copy issues.

diff --git a/config/lyxinclude.m4 b/config/lyxinclude.m4
index 5ba1984ca63ad556377ee8a349d9aeb14774ab4b..e3eade8c88552eee405a13a8c80ed09ee55675cc 100644 (file)
--- a/config/lyxinclude.m4
+++ b/config/lyxinclude.m4
@@ -408,10 +408,11 @@ if test x$GXX = xyes; then
   fi
   dnl Warnings are for preprocessor too
   if test x$enable_warnings = xyes ; then
+      AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra"
       case $gxx_version in
-         9.*) AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra"
-              AM_CXXFLAGS="$AM_CXXFLAGS  -Wno-deprecated-copy";;
-         *) AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra";;
+         9.*|clang-10*)
+             AM_CXXFLAGS="$AM_CXXFLAGS -Wno-deprecated-copy";;
+         *);;
       esac
     fi
   case $gxx_version in