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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Jerin Jacob <jerin.jacob@caviumnetworks.com>,
	Bruce Richardson <bruce.richardson@intel.com>,
	Harry van Haaren <harry.van.haaren@intel.com>,
	Thomas Monjalon <thomas.monjalon@6wind.com>
Cc: dev@dpdk.org, Ferruh Yigit <ferruh.yigit@intel.com>
Subject: [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7
Date: Thu,  6 Apr 2017 13:14:26 +0100	[thread overview]
Message-ID: <20170406121428.16883-1-ferruh.yigit@intel.com> (raw)

PMD uses some compiler builtins and new compiler options. Tested with
gcc 4.5.1 and following were not supported:

option:
-Ofast

macros:
_Static_assert

__ORDER_LITTLE_ENDIAN__
__ORDER_BIG_ENDIAN__
__BYTE_ORDER__

__atomic_fetch_add
__ATOMIC_ACQUIRE
__atomic_load_n
__ATOMIC_RELAXED
__atomic_store_n
__ATOMIC_RELEASE

It is not easy to fix all in PMD, disabling PMD for gcc version < 4.7

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 drivers/net/thunderx/Makefile | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/thunderx/Makefile b/drivers/net/thunderx/Makefile
index 706250b..0b9f0a2 100644
--- a/drivers/net/thunderx/Makefile
+++ b/drivers/net/thunderx/Makefile
@@ -62,6 +62,14 @@ SRCS-$(CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD) += nicvf_svf.c
 
 ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
 CFLAGS_nicvf_rxtx.o += -fno-prefetch-loop-arrays
+
+# Disable PMD for gcc < 4.7
+ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
+$(warning thunderx pmd not supported by gcc < 4.7)
+LIB = 
+SRC-y = 
+endif
+
 endif
 CFLAGS_nicvf_rxtx.o += -Ofast
 
-- 
2.9.3

             reply	other threads:[~2017-04-06 12:14 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-06 12:14 Ferruh Yigit [this message]
2017-04-06 12:14 ` [PATCH 2/3] event/octeontx: fix compilation for gcc < 4.6 Ferruh Yigit
2017-04-06 12:26   ` Jerin Jacob
2017-04-06 12:14 ` [PATCH 3/3] event/sw: fix build error for gcc 4.5.1 Ferruh Yigit
2017-04-06 12:21   ` Van Haaren, Harry
2017-04-06 12:33 ` [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7 Jerin Jacob
2017-04-06 13:05 ` Ferruh Yigit
2017-04-06 13:46 ` [PATCH v2 1/3] net/thunderx: disable pmd for older compilers Ferruh Yigit
2017-04-06 13:46   ` [PATCH v2 2/3] event/octeontx: fix build error for gcc < 4.6 Ferruh Yigit
2017-04-06 13:46   ` [PATCH v2 3/3] event/sw: fix build error for gcc 4.5.1 Ferruh Yigit
2017-04-06 13:59   ` [PATCH v2 1/3] net/thunderx: disable pmd for older compilers Thomas Monjalon
2017-04-06 14:05     ` Ferruh Yigit
2017-04-06 14:09       ` Thomas Monjalon
2017-04-06 14:46         ` Ferruh Yigit
2017-04-06 17:05   ` [PATCH v3 1/3] net/thunderx: disable PMD " Ferruh Yigit
2017-04-06 17:05     ` [PATCH v3 2/3] event/octeontx: fix build error for gcc < 4.6 Ferruh Yigit
2017-04-06 17:05     ` [PATCH v3 3/3] event/sw: fix build error for gcc 4.5.1 Ferruh Yigit
2017-04-06 18:40     ` [PATCH v3 1/3] net/thunderx: disable PMD for older compilers Thomas Monjalon
2017-04-06 13:52 ` [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7 Thomas Monjalon
2017-04-06 14:00   ` Jerin Jacob

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