'asm' is a GNU extension. Compilers without GNU extensions do not
understand it:
dpif-netdev-perf.h:225:5: error: use of undeclared identifier 'asm'
asm volatile("rdtsc" : "=a" (l), "=d" (h));
Redefining asm as __asm__ for non-C++ compilers that do not have it
defined. While at it, also add typeof definition. It doesn't need
a check for C++, because it's not a keyword in C++.
Signed-off-by: Ilya Maximets <[email protected]>
---
include/openvswitch/compiler.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/openvswitch/compiler.h b/include/openvswitch/compiler.h
index cf009f826..52614a5ac 100644
--- a/include/openvswitch/compiler.h
+++ b/include/openvswitch/compiler.h
@@ -37,6 +37,16 @@
#define OVS_NO_RETURN
#endif
+#ifndef typeof
+#define typeof __typeof__
+#endif
+
+#ifndef __cplusplus
+#ifndef asm
+#define asm __asm__
+#endif
+#endif
+
#if __GNUC__ && !__CHECKER__
#define OVS_UNUSED __attribute__((__unused__))
#define OVS_PRINTF_FORMAT(FMT, ARG1) __attribute__((__format__(printf, FMT,
ARG1)))
--
2.40.1
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