configure.ac: Improved help texts of arguments.

diff --git a/configure.ac b/configure.ac
index 6cc54b018e7e7368a72fe98119e631efb165791d..ebc231ce86f105756da8e7558b800cda13d13012 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -33,7 +33,7 @@ test_cc_flags() {
 dnl Optionally stick to standard C99 and POSIX.1 2001 as close as possible.
 AC_ARG_ENABLE([standards],
                AS_HELP_STRING([--enable-standards],
-                               [Enable standards compliance mode]),
+                               [enable standards compliance mode @<:@default=no@:>@]),
                [enable_standards="$enableval"],
                [enable_standards="no"])
 
@@ -66,7 +66,7 @@ AC_DEFINE([_FORTIFY_SOURCE], 2,
                [Define to enable protection against static sized buffer overflows.])
 AC_ARG_ENABLE([hardening],
                AS_HELP_STRING([--disable-hardening],
-                               [Disable hardening options]),
+                               [disable hardening options @<:@default=yes@:>@]),
                [enable_hardening="$enableval"],
                [enable_hardening="yes"])
 
@@ -94,7 +94,7 @@ fi
 dnl Strict checking for potential problems.
 AC_ARG_ENABLE([strict-checks],
                AS_HELP_STRING([--disable-strict-checks],
-                               [Disable strict compiler checks]),
+                               [disable strict compiler checks @<:@default=yes@:>@]),
                [enable_strict_checks="$enableval"],
                [enable_strict_checks="yes"])