X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/393c9290adc27e6d85b780c2434f51f95ea6df5b..e0f3b26c85f385053fb562f15029ad4c3882b061:/configure.ac

diff --git a/configure.ac b/configure.ac
index 49221ff3..af186fe7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,7 +34,7 @@ dnl Do you want to disable use of locale functions
 AH_TEMPLATE([LOCALE],
 [Undefine if you don't want locale features.  By default this is defined.])
 AC_ARG_ENABLE([locale],
-  [AC_HELP_STRING([--disable-locale], [turn off locale features])],
+  [AS_HELP_STRING([--disable-locale], [turn off locale features])],
   [AS_IF([test x$enableval = xyes], [AC_DEFINE(LOCALE)])],
   [AC_DEFINE(LOCALE)])
 
@@ -93,8 +93,8 @@ else
 fi
 
 dnl Should we use a locking directory?
-AC_ARG_ENABLE([lockdir], [
-  AS_HELP_STRING([--enable-lockdir=dir], [Store dot-lock files in "dir"])], [
+AC_ARG_ENABLE([lockdir],
+  [AS_HELP_STRING([--enable-lockdir=dir], [Store dot-lock files in "dir"])], [
   AS_IF([test "x$enableval" = xyes],[
     AC_MSG_ERROR([--enable-lockdir requires an argument])])
   AS_IF([test "x$LOCKTYPE" != xdot],[
@@ -168,6 +168,19 @@ if test "$nmh_cv_has_unusedmacros" = 'yes'; then
 fi
 AC_SUBST(DISABLE_UNUSED_MACROS_WARNING)dnl
 
+AC_CACHE_CHECK([whether compiler supports -Wno-sign-compare],
+  [nmh_cv_has_nosigncompare],
+  [nmh_saved_cppflags="$CPPFLAGS"
+   CPPFLAGS="$CPPFLAGS -Wno-sign-compare"
+   AC_TRY_COMPILE([],[],nmh_cv_has_nosigncompare=yes,
+                  nmh_cv_has_nosigncompare=no)
+   CPPFLAGS="$nmh_saved_cppflags"])
+
+if test "$nmh_cv_has_nosigncompare" = 'yes'; then
+  DISABLE_SIGN_COMPARE_WARNING=-Wno-sign-compare
+fi
+AC_SUBST(DISABLE_SIGN_COMPARE_WARNING)dnl
+
 AC_CACHE_CHECK([whether compiler supports -Wextra], [nmh_cv_has_wextra],
 [nmh_saved_cflags="$CFLAGS"
  CFLAGS="$CFLAGS -Wextra -Wno-clobbered"