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Date: Tue, 5 May 2015 11:08:37 +0300
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From: Pavel Odintsov <pavel.odintsov@gmail.com>
To: dev@dpdk.org
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Subject: Re: [dpdk-dev] Issues with rte_hash_crc.h when compiling with C++
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I fixed this issue with very dirty hacks.
I commented mentioned here lines in file
/usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpuflags=
.h:
//enum rte_cpu_flag_t;
//enum cpu_register_t;
// static const struct feature_entry cpu_feature_table[];
//static inline int
//rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature);
And everything compiled OK. But I thought C++ tests and compatibility
is should for dpdk.
On Tue, May 5, 2015 at 10:57 AM, Pavel Odintsov
<pavel.odintsov@gmail.com> wrote:
> Hello!
>
> Could anybody help me with this issue? :(
>
> In this file widely used enum forward declarations which completely
> incompatible with C++ and need some rewrite.
>
> On Wed, Apr 29, 2015 at 3:17 PM, Pavel Odintsov
> <pavel.odintsov@gmail.com> wrote:
>> Hello!
>>
>> I have C++ application compiles and works nice. But when I include
>> rte_hash_crc.h header everything goes away.
>>
>> CC main.o
>> In file included from
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:46=
:0,
>> from
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_hash_crc.h:48=
,
>> from /root/interceptor/main.cpp:25:
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:50:6:
>> error: use of enum =E2=80=98rte_cpu_flag_t=E2=80=99 without previous dec=
laration
>> enum rte_cpu_flag_t;
>> ^
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:55:6:
>> error: use of enum =E2=80=98cpu_register_t=E2=80=99 without previous dec=
laration
>> enum cpu_register_t;
>> ^
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:79:35:
>> error: uninitialized const =E2=80=98cpu_feature_table=E2=80=99 [-fpermis=
sive]
>> static const struct feature_entry cpu_feature_table[];
>> ^
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:64:8:
>> note: =E2=80=98const struct feature_entry=E2=80=99 has no user-provided =
default
>> constructor
>> struct feature_entry {
>> ^
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:65:11:
>> note: and the implicitly-defined constructor does not initialize
>> =E2=80=98uint32_t feature_entry::leaf=E2=80=99
>> uint32_t leaf; /**< cpuid leaf */
>> ^
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:79:53:
>> error: storage size of =E2=80=98cpu_feature_table=E2=80=99 isn=E2=80=99t=
known
>> static const struct feature_entry cpu_feature_table[];
>> ^
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:101:31:
>> error: use of enum =E2=80=98rte_cpu_flag_t=E2=80=99 without previous dec=
laration
>> rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature);
>> ^
>> In file included from
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_hash_crc.h:48=
:0,
>> from /root/interceptor/main.cpp:25:
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:
>> In function =E2=80=98int rte_cpu_get_flag_enabled(rte_cpu_flag_t)=E2=80=
=99:
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:27=
8:53:
>> error: conflicting declaration of C function =E2=80=98int
>> rte_cpu_get_flag_enabled(rte_cpu_flag_t)=E2=80=99
>> rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature)
>> ^
>> In file included from
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:46=
:0,
>> from
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/rte_hash_crc.h:48=
,
>> from /root/interceptor/main.cpp:25:
>> /usr/src/dpdk-2.0.0/x86_64-native-linuxapp-gcc/include/generic/rte_cpufl=
ags.h:101:1:
>> note: previous declaration =E2=80=98int rte_cpu_get_flag_enabled(int)=E2=
=80=99
>> rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature);
>> ^
>> /usr/src/dpdk-2.0.0/mk/internal/rte.compile-pre.mk:145: recipe for
>> target 'main.o' failed
>> make[1]: *** [main.o] Error 1
>> /usr/src/dpdk-2.0.0/mk/rte.extapp.mk:42: recipe for target 'all' failed
>> make: *** [all] Error 2
>>
>> I prepared my environment with this manual:
>> http://www.stableit.ru/2015/04/how-to-code-for-dpdk-with-c.html
>>
>> Could anybody help me with this header file and C++?
>>
>> --
>> Sincerely yours, Pavel Odintsov
>
>
>
> --
> Sincerely yours, Pavel Odintsov
--=20
Sincerely yours, Pavel Odintsov