utf8_length: add reserve flag for reserving a trailing character

[tig] / configure.ac

diff --git a/configure.ac b/configure.ac
index 422039e..65b5af3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,11 +1,14 @@
 AC_INIT([tig], [0],
        [Jonas Fonseca <fonseca@diku.dk>],
        [tig])
+
 AC_LANG([C])
 AC_CONFIG_HEADER(config.h)
 AC_CONFIG_SRCDIR(tig.c)
 
-AC_SEARCH_LIBS([wclear], [ncurses curses])
+AC_SEARCH_LIBS([wclear], [ncursesw ncurses curses], [],
+              [AC_ERROR([curses not found])])
+
 AM_ICONV
 
 AC_PROG_CC
@@ -21,3 +24,9 @@ AC_CHECK_PROGS(DOCBOOK2PDF, [docbook2pdf false])
 
 AC_CONFIG_FILES([config.make])
 AC_OUTPUT
+
+case "$LIBS" in
+*-lncursesw*) ;;
+*) AC_MSG_RESULT([NOTE: The found ncurses library does not support wide-char.])
+   AC_MSG_RESULT([NOTE: This means that tig will not correctly render UTF-8])
+esac