From cae2270fd72961adeae77d21d065bfcb64ca7d77 Mon Sep 17 00:00:00 2001
From: Mathieu Lirzin <mthl@gnu.org>
Date: Fri, 23 Mar 2018 20:24:17 +0100
Subject: build: Check non-standard C functions at configure time

* configure.ac: Check 'argp_parse' and 'asprintf' presence.
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index dfb756a..fbda198 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,6 +43,12 @@ GUILE_PKG([2.2 2.0])
 # 'config.rpath' script.
 PKG_CHECK_MODULES(GUILE, [guile-$GUILE_EFFECTIVE_VERSION])
 
+# Check for 'argp' program arguments parser.
+AC_CHECK_FUNC(argp_parse, [], AC_MSG_ERROR([argp not found]))
+
+# Check for non-POSIX string formatting function.
+AC_CHECK_FUNC(asprintf, [], AC_MSG_ERROR([asprintf not found]))
+
 # Checks for programs.
 
 GUILE_PROGS
-- 
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