From: Ferruh Yigit <ferruh.yigit@intel.com>
To: "Wiles, Keith" <keith.wiles@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3 00/11] Fix build errors related to exported headers
Date: Fri, 8 Jul 2016 15:45:50 +0100 [thread overview]
Message-ID: <577FBC9E.30604@intel.com> (raw)
In-Reply-To: <20160708143512.GG7621@6wind.com>
On 7/8/2016 3:35 PM, Adrien Mazarguil wrote:
> On Fri, Jul 08, 2016 at 02:15:37PM +0000, Wiles, Keith wrote:
>>
>>> On Jul 8, 2016, at 4:56 AM, Yigit, Ferruh <ferruh.yigit@intel.com> wrote:
>>>
>>> On 7/8/2016 9:05 AM, Adrien Mazarguil wrote:
>>>> On Thu, Jul 07, 2016 at 06:33:17PM +0000, Wiles, Keith wrote:
>>>>>
>>>>>> On Jul 7, 2016, at 10:49 AM, Adrien Mazarguil <adrien.mazarguil@6wind.com> wrote:
>>>>>>
>>>>>> DPDK uses GNU C language extensions in most of its code base. This is fine
>>>>>> for internal source files whose compilation flags are controlled by DPDK,
>>>>>> however user applications that use exported "public" headers may experience
>>>>>> compilation failures when enabling strict error/standard checks (-std and
>>>>>> -pedantic for instance).
>>>>>
>>>>> Do you try compiling these changes with CLANG and/or ICC compilers?
>>>>
>>>> clang/clang++ yes, works fine. I did not try with ICC however.
>>>
>>> I tested with icc, getting following error [1], compiler warning seems
>>> valid, but didn't investigate what in your patch cause this.
>>>
>>> [1]
>>> .../app/test/test_table_acl.c(487): error #2405: array of elements
>>> containing a flexible array member is nonstandard
>>> struct rte_pipeline_table_entry entries[5];
>>> ^
>>>
>>> .../app/test/test_table_acl.c(492): error #2405: array of elements
>>> containing a flexible array member is nonstandard
>>> struct rte_pipeline_table_entry entries_ptr[5];
>>
>> I am guessing it does not like the uint8_t action_data[0] in the rte_pipeline_table_entry structure. I can see why it would be non-standard allocated on the stack in this case. Maybe a keyword like __extension__ needs to be added or pragma.
>
> Hmmm, right, a variable array cannot be embedded like that. I think a change
> in test_table_acl.c would be better.
Correct, I just wonder why not getting this same compiler warning before
your changes.
...
> Is that the only issue you saw?
>
Yes.
>>>> Note that considering "({ ... })" is a GNU extension, compilers that do
>>>> support this syntax also support the GNU __extension__ keyword. As a result,
>>>> those that do not support this keyword most likely already cannot compile
>>>> DPDK at all.
>
next prev parent reply other threads:[~2016-07-08 14:45 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 14:08 [dpdk-dev] [PATCH 00/10] " Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 01/10] lib: add extension keyword to braced-groups within expressions Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 02/10] lib: add extension keyword to large enum values Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 03/10] lib: use C99 syntax for zero-size arrays Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 04/10] lib: add extension keyword to nonstandard bit-fields Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 05/10] lib: add extension keyword to structs with no members Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 06/10] lib: add extension keyword to unnamed structs/unions Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 07/10] lib: fix missing include dependencies Adrien Mazarguil
2016-04-05 20:23 ` [dpdk-dev] [dpdk-dev, " Jan Viktorin
2016-04-06 8:54 ` Adrien Mazarguil
2016-04-06 12:10 ` Jan Viktorin
2016-04-05 14:08 ` [dpdk-dev] [PATCH 08/10] lib: add extension keyword to forward reference to enum types Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 09/10] lib: remove named variadic macros in exported headers Adrien Mazarguil
2016-04-05 14:08 ` [dpdk-dev] [PATCH 10/10] lib: hide static functions that are never defined Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 00/11] Fix build errors related to exported headers Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 01/11] lib: work around braced-groups within expressions Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 02/11] lib: work around large enum values Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 03/11] lib: use C99 syntax for zero-size arrays Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 04/11] lib: work around nonstandard bit-fields Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 05/11] lib: work around structs with no members Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 06/11] lib: work around unnamed structs/unions Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 07/11] lib: add missing include dependencies Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 08/11] lib: work around forward reference to enum types Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 09/11] lib: remove named variadic macros in exported headers Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 10/11] lib: hide static functions never defined Adrien Mazarguil
2016-07-05 10:44 ` [dpdk-dev] [PATCH v2 11/11] scripts: check compilation of exported header files Adrien Mazarguil
2016-07-05 11:15 ` [dpdk-dev] [PATCH v2 00/11] Fix build errors related to exported headers Jan Viktorin
2016-07-05 11:35 ` Adrien Mazarguil
2016-07-05 11:27 ` Ferruh Yigit
2016-07-05 12:33 ` Thomas Monjalon
2016-07-05 12:37 ` Adrien Mazarguil
2016-07-06 16:34 ` Thomas Monjalon
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 " Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 01/11] lib: work around braced-groups within expressions Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 02/11] lib: work around large enum values Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 03/11] lib: use C99 syntax for zero-size arrays Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 04/11] lib: work around nonstandard bit-fields Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 05/11] lib: work around structs with no members Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 06/11] lib: work around unnamed structs/unions Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 07/11] lib: add missing include dependencies Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 08/11] lib: work around forward reference to enum types Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 09/11] lib: remove named variadic macros in exported headers Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 10/11] lib: hide static functions never defined Adrien Mazarguil
2016-07-07 15:49 ` [dpdk-dev] [PATCH v3 11/11] scripts: check compilation of exported header files Adrien Mazarguil
2016-07-07 18:33 ` [dpdk-dev] [PATCH v3 00/11] Fix build errors related to exported headers Wiles, Keith
2016-07-08 8:05 ` Adrien Mazarguil
2016-07-08 9:56 ` Ferruh Yigit
2016-07-08 14:15 ` Wiles, Keith
2016-07-08 14:35 ` Adrien Mazarguil
2016-07-08 14:45 ` Ferruh Yigit [this message]
2016-07-08 15:23 ` Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 00/10] " Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 01/10] lib: work around braced-groups within expressions Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 02/10] lib: work around large enum values Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 03/10] lib: use C99 syntax for zero-size arrays Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 04/10] lib: work around nonstandard bit-fields Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 05/10] lib: work around unnamed structs/unions Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 06/10] lib: add missing include dependencies Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 07/10] lib: work around forward reference to enum types Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 08/10] lib: remove named variadic macros in exported headers Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 09/10] lib: hide static functions never defined Adrien Mazarguil
2016-07-13 13:02 ` [dpdk-dev] [PATCH v4 10/10] scripts: check compilation of exported header files Adrien Mazarguil
2016-07-15 21:03 ` [dpdk-dev] [PATCH v4 00/10] Fix build errors related to exported headers Bruce Richardson
2016-07-18 10:47 ` Adrien Mazarguil
2016-07-20 9:55 ` Thomas Monjalon
2016-08-23 16:36 ` Thomas Monjalon
2016-09-08 12:39 ` Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 " Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 01/10] lib: work around braced-groups within expressions Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 02/10] lib: work around large enum values Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 03/10] lib: use C99 syntax for zero-size arrays Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 04/10] lib: work around nonstandard bit-fields Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 05/10] lib: work around unnamed structs/unions Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 06/10] lib: add missing include dependencies Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 07/10] lib: work around forward reference to enum types Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 08/10] lib: remove named variadic macros in exported headers Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 09/10] lib: hide static functions never defined Adrien Mazarguil
2016-09-08 12:25 ` [dpdk-dev] [PATCH v5 10/10] scripts: check compilation of exported header files Adrien Mazarguil
2016-09-13 13:38 ` [dpdk-dev] [PATCH v5 00/10] Fix build errors related to exported headers Thomas Monjalon
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