From 2bd9ed649bc73acdd12fd1a59ddf5eaf59a59413 Mon Sep 17 00:00:00 2001
From: Vincent Bernat <vincent@bernat.im>
Date: Fri, 7 Nov 2014 23:46:45 +0100
Subject: [PATCH] libstatgrab: fix sg_init() invocation for libstatgrab >= 0.9

In those versions, `sg_init()` need to be invoked with an additional
argument. The need for such an argument is detected at configure-time.

Fixes: #445
---
 configure.ac          | 32 ++++++++++++++++++++++++++++++++
 src/daemon/collectd.c |  6 +++++-
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index a00eebb1..35f89464 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4077,6 +4077,34 @@ then
   LDFLAGS="$SAVE_LDFLAGS"
 fi
 
+if test "x$with_libstatgrab" = "xyes"
+then
+  SAVE_CFLAGS="$CFLAGS"
+  SAVE_LDFLAGS="$LDFLAGS"
+
+  CFLAGS="$CFLAGS $with_libstatgrab_cflags"
+  LDFLAGS="$LDFLAGS $with_libstatgrab_ldflags"
+
+  AC_CACHE_CHECK([if sg_init() requires an argument],
+          [c_cv_have_libstatgrab_init_arg],
+          AC_LINK_IFELSE([AC_LANG_PROGRAM(
+[[[
+#include <stdio.h>
+#include <statgrab.h>
+]]],
+[[[
+      if (sg_init()) return 0;
+]]]
+    )],
+    [c_cv_have_libstatgrab_init_arg="no"],
+    [c_cv_have_libstatgrab_init_arg="yes"]
+          )
+  )
+
+  CFLAGS="$SAVE_CFLAGS"
+  LDFLAGS="$SAVE_LDFLAGS"
+fi
+
 AM_CONDITIONAL(BUILD_WITH_LIBSTATGRAB, test "x$with_libstatgrab" = "xyes")
 if test "x$with_libstatgrab" = "xyes"
 then
@@ -4085,6 +4113,10 @@ then
   BUILD_WITH_LIBSTATGRAB_LDFLAGS="$with_libstatgrab_ldflags"
   AC_SUBST(BUILD_WITH_LIBSTATGRAB_CFLAGS)
   AC_SUBST(BUILD_WITH_LIBSTATGRAB_LDFLAGS)
+  if test "x$c_cv_have_libstatgrab_init_arg" = "xyes"
+  then
+        AC_DEFINE(HAVE_LIBSTATGRAB_INIT_ARG, 1, [Define to 1 if sg_init does require an argument])
+  fi
 fi
 # }}}
 
diff --git a/src/daemon/collectd.c b/src/daemon/collectd.c
index 2e2d821a..8c4d6e66 100644
--- a/src/daemon/collectd.c
+++ b/src/daemon/collectd.c
@@ -307,7 +307,11 @@ static int do_init (void)
 #endif
 
 #if HAVE_LIBSTATGRAB
-	if (sg_init ())
+	if (sg_init (
+# if HAVE_LIBSTATGRAB_INIT_ARG
+		    0
+# endif
+		    ))
 	{
 		ERROR ("sg_init: %s", sg_str_error (sg_get_error ()));
 		return (-1);
-- 
2.11.0