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From: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
To: jerin.jacob@caviumnetworks.com, santosh.shukla@caviumnetworks.com,
ferruh.yigit@intel.com
Cc: dev@dpdk.org,
Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
Date: Fri, 26 Jan 2018 12:10:16 +0530
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Subject: [dpdk-dev] [PATCH v2] net/octeontx: use stub for building in old
compilers
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Use stub for building clang < 4.0 as it doesn't support the following
arm machine directives:
.cpu
Signed-off-by: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
---
v2 Changes:
- use stub for older clang compilers instead of disabling PMD
drivers/net/octeontx/Makefile | 8 ++++++++
drivers/net/octeontx/base/octeontx_io.h | 2 +-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/net/octeontx/Makefile b/drivers/net/octeontx/Makefile
index b47bf7a40..5244eedd3 100644
--- a/drivers/net/octeontx/Makefile
+++ b/drivers/net/octeontx/Makefile
@@ -30,6 +30,14 @@ SRCS-$(CONFIG_RTE_LIBRTE_OCTEONTX_PMD) += octeontx_pkivf.c
SRCS-$(CONFIG_RTE_LIBRTE_OCTEONTX_PMD) += octeontx_bgx.c
SRCS-$(CONFIG_RTE_LIBRTE_OCTEONTX_PMD) += octeontx_ethdev.c
+ifeq ($(CONFIG_RTE_TOOLCHAIN_CLANG),y)
+
+ifeq ($(shell test $(CLANG_MAJOR_VERSION)$(CLANG_MINOR_VERSION) -lt 40 && echo 1), 1)
+CFLAGS += -D CLANG_BUILD_BUG
+endif
+
+endif
+
ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
CFLAGS_octeontx_rxtx.o += -fno-prefetch-loop-arrays
diff --git a/drivers/net/octeontx/base/octeontx_io.h b/drivers/net/octeontx/base/octeontx_io.h
index d51ded236..1c0a941a5 100644
--- a/drivers/net/octeontx/base/octeontx_io.h
+++ b/drivers/net/octeontx/base/octeontx_io.h
@@ -51,7 +51,7 @@ do { \
} while (0)
#endif
-#if defined(RTE_ARCH_ARM64)
+#if defined(RTE_ARCH_ARM64) && !defined(CLANG_BUILD_BUG)
/**
* Perform an atomic fetch-and-add operation.
*/
--
2.16.0