version: set version for 3.12.0.0

[kconfig-frontends] / configure.ac

diff --git a/configure.ac b/configure.ac
index 648850e8044ace6bdc4d0a438f9bf2138d81bbeb..2f1817ef69ca9be2c526a2c25ab00dfe6a164f40 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -219,9 +219,22 @@ AS_IF(
 AS_IF(
     [test "$need_pkgconfig" = "yes"],
     [PKG_PROG_PKG_CONFIG()])
+# Look for `lex'. If it cannot be found, autoconf sets $LEX to ':'.
 AC_PROG_LEX
+AS_IF(
+    [test "$LEX" = ":"],
+    [AC_MSG_ERROR([can not find a lexer generator (such as lex or flex)])])
 AC_SUBST([AM_LFLAGS], ["-L -P zconf"])
+# Look for `yacc'. If it cannot be found, autoconf sets $YACC to 'yacc'.
 AC_PROG_YACC
+AS_IF(
+    [test "$YACC" = "yacc"],
+    [AC_CHECK_PROGS(
+        [YACC_IN_PATH],
+        [yacc])]
+     AS_IF(
+        [test -z "$YACC_IN_PATH"],
+        [AC_MSG_ERROR([can not find a parser generator (such as yacc or bison)])]))
 AC_SUBST([AM_YFLAGS], ["-t -l -p zconf"])
 
 #----------------------------------------
@@ -265,7 +278,9 @@ AS_IF(
      LIBS=
      AC_CHECK_HEADERS(
         [ncursesw/curses.h ncurses/ncurses.h ncurses/curses.h ncurses.h curses.h],
-        [CURSES_LOC=$ac_header; ncurses_mconf_CPPFLAGS=-DCURSES_LOC=\\\"$ac_header\\\"; break])
+        [CURSES_LOC=$ac_header
+         ncurses_mconf_CPPFLAGS=-DCURSES_LOC=\\\"$ac_header\\\"
+         break # Stupid syntax-coloring in vim: "])
      AS_IF(
         [test -z "$CURSES_LOC"],
         [AS_IF(