From 50ec7fde8d2b7b6c1d75e44032a11613d5b81db9 Mon Sep 17 00:00:00 2001
From: TomW <TomW@localhost>
Date: Sun, 14 Sep 2014 21:40:46 +0100
Subject: [PATCH] Add check for pthread in configure. Patch from kurumushi.

---
 configure    | 45 +++++++++++++++++++++++++++++++++++++++++++++
 configure.ac |  1 +
 2 files changed, 46 insertions(+)

diff --git a/configure b/configure
index 581e6e0..603e040 100755
--- a/configure
+++ b/configure
@@ -4303,6 +4303,51 @@ else
 fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthread" >&5
+$as_echo_n "checking for pthread_create in -lpthread... " >&6; }
+if test "${ac_cv_lib_pthread_pthread_create+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char pthread_create ();
+int
+main ()
+{
+return pthread_create ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_pthread_pthread_create=yes
+else
+  ac_cv_lib_pthread_pthread_create=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_create" >&5
+$as_echo "$ac_cv_lib_pthread_pthread_create" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_create" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBPTHREAD 1
+_ACEOF
+
+  LIBS="-lpthread $LIBS"
+
+fi
+
 
 ac_config_files="$ac_config_files Makefile src/Makefile"
 
diff --git a/configure.ac b/configure.ac
index 1c604df..b975a7a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,5 +44,6 @@ AC_CHECK_LIB([alut], [alutInit], [], \
    [echo "You need to install the ALUT library."
     exit -1])
 
+AC_CHECK_LIB([pthread], [pthread_create])
 
 AC_OUTPUT([Makefile src/Makefile])