[dpdk-dev] [PATCH] eal: fix build issue
Jerin Jacob
jerin.jacob at caviumnetworks.com
Tue Nov 6 12:45:01 CET 2018
Some toolchain has fls() definition in string.h as argument type int,
which is conflicting uint32_t argument type.
/export/dpdk.org/lib/librte_eal/common/rte_reciprocal.c:47:19:
error: conflicting types for ‘fls’
static inline int fls(uint32_t x)
^~~
/opt/marvell-tools-201/aarch64-marvell-elf/include/strings.h:59:6:
note: previous declaration of ‘fls’ was here
int fls(int) __pure2;
FreeBSD string.h also has fls() with argument as int type.
https://www.freebsd.org/cgi/man.cgi?query=fls&sektion=3
Fixing the conflict by renaming internal function as __fls
Fixes: ffe3ec811ef5 ("sched: introduce reciprocal divide")
Cc: stable at dpdk.org
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
lib/librte_eal/common/rte_reciprocal.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/common/rte_reciprocal.c b/lib/librte_eal/common/rte_reciprocal.c
index d81b11db6..f2c7453d2 100644
--- a/lib/librte_eal/common/rte_reciprocal.c
+++ b/lib/librte_eal/common/rte_reciprocal.c
@@ -44,7 +44,7 @@
/* find largest set bit.
* portable and slow but does not matter for this usage.
*/
-static inline int fls(uint32_t x)
+static inline int __fls(uint32_t x)
{
int b;
@@ -62,7 +62,7 @@ struct rte_reciprocal rte_reciprocal_value(uint32_t d)
uint64_t m;
int l;
- l = fls(d - 1);
+ l = __fls(d - 1);
m = ((1ULL << 32) * ((1ULL << l) - d));
m /= d;
--
2.19.1
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