header: Fix build error with old kernel headers

Old development environment doesn't necessarily contain the headers
defining __kernel_long_t that is recently used for y2038 timespec
conditional.  Define it explicitly in such a case.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/asound.h b/include/sound/asound.h
index 3be4d850a073b7e47d357917afacaa79b5c71d34..89dd7d2f61b852c82cb236f3b9f26411e574f614 100644 (file)
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -1 +1,11 @@
+/* workaround for building with old glibc / kernel headers */
+#ifdef __linux__
+#include <linux/types.h>
+#else
+#include <sys/types.h>
+#endif
+#ifndef __kernel_long_t
+#define __kernel_long_t long
+#endif
+
 #include <alsa/sound/uapi/asound.h>