From 30a084a33a8a6e1dcf69d2542cfb2420fea1b5e7 Mon Sep 17 00:00:00 2001
From: Scot Breitenfeld <brtnfld@hdfgroup.org>
Date: Fri, 22 Apr 2022 14:03:04 -0500
Subject: [PATCH] added libs rt and pthreads (#1673)

* added libs rt and pthreads
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 1820d2799a2..f568d378aa8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3231,6 +3231,10 @@ if test "X$SUBFILING_VFD" = "Xyes"; then
       AC_MSG_ERROR([Subfiling VFD requires atomic operations support. C11 stdatomic.h NOT available.])
     fi
 
+# Checks for libraries.
+    AC_SEARCH_LIBS([shm_open], [rt])
+    AC_CHECK_LIB([pthread], [pthread_self],[], [echo "Error: Required library pthread not found." && exit 1])
+
 else
     AC_MSG_RESULT([no])
 fi