From: Ian Abbott <abbotti@mev.co.uk>
Date: Wed, 12 Dec 2007 14:51:57 +0000 (+0000)
Subject: Check for include/linux/mutex.h in kernel source.
X-Git-Tag: v0_7_76~19
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=22c197a98d48b1ee7f7ec688e8c95330ee07966d;p=comedi.git

Check for include/linux/mutex.h in kernel source.
---

diff --git a/configure.ac b/configure.ac
index aa52bd3a..e62d5f15 100644
--- a/configure.ac
+++ b/configure.ac
@@ -90,6 +90,7 @@ COMEDI_CHECK_LINUX_KBUILD([$LINUX_DIR], [ENABLE_KBUILD="yes"], [ENABLE_KBUILD="n
 AC_ARG_ENABLE([kbuild], [  --enable-kbuild	Force use (or not) of kernel's Kbuild system to build modules (needs recent 2.6 kernel)],
 	[ENABLE_KBUILD=$enableval], [])
 AM_CONDITIONAL([CONFIG_KBUILD], [test ${ENABLE_KBUILD} = "yes"])
+COMEDI_CHECK_HAVE_MUTEX_H([$LINUX_DIR], [HAVE_MUTEX_H="yes"], [HAVE_MUTEX_H="no"])
 AS_LINUX_CONFIG_OPTION_MODULE(CONFIG_ISA)
 AS_LINUX_CONFIG_OPTION_MODULE(CONFIG_PCI)
 
diff --git a/m4/as-linux.m4 b/m4/as-linux.m4
index 524589c4..bad20262 100644
--- a/m4/as-linux.m4
+++ b/m4/as-linux.m4
@@ -709,3 +709,19 @@ AC_DEFUN([COMEDI_CHECK_PCMCIA_PROBE],
 		$2
 	fi
 ])
+
+# COMEDI_CHECK_HAVE_MUTEX_H([LINUX_SOURCE_PATH], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# -------------------------------------------------------------
+#
+# Check if kernel has <linux/mutex.h> file.
+AC_DEFUN([COMEDI_CHECK_HAVE_MUTEX_H],
+[
+	AC_MSG_CHECKING([$1 for include/linux/mutex.h])
+	if test -f "$1/include/linux/mutex.h"; then
+		AC_MSG_RESULT([yes])
+		$2
+	else
+		AC_MSG_RESULT([no])
+		$3
+	fi
+])