[dpdk-dev] net/qede/base: build is broken on FreeBSD 11.0 with clang 3.8.0

Andrew Rybchenko arybchenko at solarflare.com
Tue Jan 17 15:59:38 CET 2017


Hi,

build is broken for me on FreeBSD 11.0. Just default config and gmake:

== Build drivers/net/qede
   CC base/ecore_dev.o
   CC base/ecore_hw.o
   CC base/ecore_cxt.o
/tmp/dpdk-next-net/drivers/net/qede/base/ecore_cxt.c:1257:2: error:
       shifting a negative signed value is undefined 
[-Werror,-Wshift-negative-value]
         SET_FIELD(cdu_params, CDUC_NCIB, elems_per_page);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp//dpdk-next-net/drivers/net/qede/base/ecore.h:82:27: note:
       expanded from macro 'SET_FIELD'
         (value) &= ~(name##_MASK << name##_SHIFT);                      \
                      ~~~~~~~~~~~ ^
/tmp/dpdk-next-net/drivers/net/qede/base/ecore_cxt.c:1268:2: error:
       shifting a negative signed value is undefined 
[-Werror,-Wshift-negative-value]
         SET_FIELD(cdu_params, CDUT_TYPE0_CXT_SIZE, (cxt_size >> 3));
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/dpdk-next-net/drivers/net/qede/base/ecore.h:82:27: note:
       expanded from macro 'SET_FIELD'
         (value) &= ~(name##_MASK << name##_SHIFT);                      \
                      ~~~~~~~~~~~ ^
/tmp/dpdk-next-net/drivers/net/qede/base/ecore_cxt.c:1280:2: error:
       shifting a negative signed value is undefined 
[-Werror,-Wshift-negative-value]
         SET_FIELD(cdu_params, CDUT_TYPE1_CXT_SIZE, (cxt_size >> 3));
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/dpdk-next-net/drivers/net/qede/base/ecore.h:82:27: note:
       expanded from macro 'SET_FIELD'
         (value) &= ~(name##_MASK << name##_SHIFT);                      \
                      ~~~~~~~~~~~ ^
3 errors generated.
gmake[5]: *** [/tmp/dpdk-next-net/mk/internal/rte.compile-pre.mk:140: 
base/ecore_cxt.o] Error 1
gmake[4]: *** [/tmp/dpdk-next-net/mk/rte.subdir.mk:63: qede] Error 2
gmake[3]: *** [/tmp/dpdk-next-net/mk/rte.subdir.mk:63: net] Error 2
gmake[2]: *** [/tmp/dpdk-next-net/mk/rte.sdkbuild.mk:80: drivers] Error 2
gmake[1]: *** [/tmp/dpdk-next-net/mk/rte.sdkroot.mk:127: all] Error 2
gmake: *** [Makefile:12: all] Error 2

$ clang --version
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on 
LLVM 3.8.0)
Target: x86_64-unknown-freebsd11.0
Thread model: posix
InstalledDir: /usr/bin

Andrew.


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