From abe7c4733f104199006000a30f62db8640278ebf Mon Sep 17 00:00:00 2001
From: Marko Lindqvist <cazfi74@gmail.com>
Date: Sat, 8 Oct 2022 03:55:17 +0300
Subject: [PATCH 37/37] configure: Add cache variable for readline runtime
detection
See osdn #45460
Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>
---
m4/readline.m4 | 23 ++++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/m4/readline.m4 b/m4/readline.m4
index 5124d8dd47..90326b4483 100644
--- a/m4/readline.m4
+++ b/m4/readline.m4
@@ -8,10 +8,11 @@ dnl to included -lreadline and parameter EXTRA-LIBS.
dnl Should already have checked that header and library exist.
dnl
AC_DEFUN([FC_CHECK_READLINE_RUNTIME],
-[AC_MSG_CHECKING([whether readline works at runtime])
-templibs="$LIBS"
+[templibs="$LIBS"
LIBS="-lreadline $1 $LIBS"
-AC_RUN_IFELSE([AC_LANG_SOURCE([[
+AC_CACHE_CHECK([whether readline works at runtime],
+ [ac_cv_lib_working_readline],
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
/*
* testrl.c
* File revision 0
@@ -48,12 +49,20 @@ int main(void) {
rl_callback_handler_remove(); /* needed to re-set terminal */
return(0);
}
-]])],[AC_MSG_RESULT(yes)
- [$2]],[AC_MSG_RESULT(no)
- [$3]],[AC_MSG_RESULT(unknown: cross-compiling)
- [$2]])
+]])],[ac_cv_lib_working_readline=yes],
+ [ac_cv_lib_working_readline=no],
+ [dnl Assuming "yes" when cross-compiling
+ ac_cv_lib_working_readline=yes])
LIBS="$templibs"
])
+if test "$ac_cv_lib_working_readline" = "yes" ; then
+ [$2]
+ :
+else
+ [$3]
+ :
+fi
+])
AC_DEFUN([FC_HAS_READLINE],
[
--
2.35.1