configure.ac: remove redundant variable assignments

These are implied by autoconf.

diff --git a/configure.ac b/configure.ac
index 3676ffcd720791554b3800579fb562d201beb702..cbd3989de985d45eb8f82df69448d31ac88f1f6a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -152,8 +152,7 @@ fi
 dnl enable colors
 AC_ARG_ENABLE([colors],
        AS_HELP_STRING([--enable-colors],
-               [Enable color support]),
-               [enable_colors=$enableval],
+               [Enable color support]),,
                [enable_colors=auto])
 AC_MSG_CHECKING([whether to include color support])
 AS_IF([ test "x$enable_colors" = xyes || test "x$enable_colors" = xauto ],
@@ -215,8 +214,7 @@ AC_CHECK_LIB([$(expr substr $CURSES_LIB 3 99)],
 
 AC_ARG_ENABLE([mouse], 
        AS_HELP_STRING([--enable-mouse],
-               [Enable curses getmouse support @<:@default=yes@:>@]),
-               [enable_mouse=$enableval],
+               [Enable curses getmouse support @<:@default=yes@:>@]),,
                [enable_mouse=auto])
 
 AC_MSG_CHECKING([whether to include mouse support])
@@ -293,8 +291,7 @@ dnl Optional screen - lyrics
 AC_MSG_CHECKING([whether to include the lyrics screen]) 
 AC_ARG_ENABLE([lyrics-screen], 
               AS_HELP_STRING([--enable-lyrics-screen],
-               [Enable lyrics screen @<:@default=no@:>@]),
-       [enable_lyrics_screen=$enableval],
+               [Enable lyrics screen @<:@default=no@:>@]),,
        [enable_lyrics_screen=no])
 
 case "$host_os" in