* [dpdk-dev] [PATCH] eal: fix clang build with intrinsics forced
[not found] <CGME20190115112946eucas1p22fa0b405d8cfe1feae7426a9b37857b1@eucas1p2.samsung.com>
@ 2019-01-15 11:29 ` Ilya Maximets
2019-01-17 16:54 ` Thomas Monjalon
0 siblings, 1 reply; 2+ messages in thread
From: Ilya Maximets @ 2019-01-15 11:29 UTC (permalink / raw)
To: dev, Thomas Monjalon
Cc: Pavan Nikhilesh, Bruce Richardson, Honnappa Nagarahalli,
Ilya Maximets, stable
This fixes x86_64-native-linuxapp-clang build with
CONFIG_RTE_FORCE_INTRINSICS=y:
include/generic/rte_atomic.h:218:9: error:
implicit declaration of function '__atomic_exchange_2'
is invalid in C99 [-Werror,-Wimplicit-function-declaration]
include/generic/rte_atomic.h:501:9: error:
implicit declaration of function '__atomic_exchange_4'
is invalid in C99 [-Werror,-Wimplicit-function-declaration]
include/generic/rte_atomic.h:783:9: error:
implicit declaration of function '__atomic_exchange_8'
is invalid in C99 [-Werror,-Wimplicit-function-declaration]
We didn't caught this issue previously on other platforms because
CONFIG_RTE_FORCE_INTRINSICS enabled by default only for armv8.
Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
Cc: stable@dpdk.org
Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
---
lib/librte_eal/common/include/generic/rte_atomic.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/lib/librte_eal/common/include/generic/rte_atomic.h b/lib/librte_eal/common/include/generic/rte_atomic.h
index d0c464fb1..4afd1acc3 100644
--- a/lib/librte_eal/common/include/generic/rte_atomic.h
+++ b/lib/librte_eal/common/include/generic/rte_atomic.h
@@ -212,7 +212,7 @@ rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val);
static inline uint16_t
rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val)
{
-#if defined(RTE_ARCH_ARM64) && defined(__clang__)
+#if defined(__clang__)
return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
#else
return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST);
@@ -495,7 +495,7 @@ rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val);
static inline uint32_t
rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val)
{
-#if defined(RTE_ARCH_ARM64) && defined(__clang__)
+#if defined(__clang__)
return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
#else
return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST);
@@ -777,7 +777,7 @@ rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val);
static inline uint64_t
rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val)
{
-#if defined(RTE_ARCH_ARM64) && defined(__clang__)
+#if defined(__clang__)
return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
#else
return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST);
--
2.17.1
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