It should be added automatically by the configure script. I would check
"config.log" for any mention of "c++17" to see what went wrong. I checked
the clang website and it claims Clang 5 supports C++17. You could also try
compiling this with clang 5 and "-std=c++17"
#include <string_view>
int main(int argc, char** argv) {
std::string_view txt { "Delain" };
return 0;
}
On Thu, Dec 19, 2019 at 8:27 PM supraja sridhar <[email protected]>
wrote:
> Is that a flag which the users have to manually add?
>
> -Supraja
>
> On Thu, Dec 19, 2019 at 9:40 PM Alan Carroll <
> [email protected]> wrote:
>
>> I don't see "-std=c++17" which is required as of ATS 8. The header
>> "string_view" isn't supported in earlier versions of C++.
>>
>> On Thu, Dec 19, 2019 at 12:48 AM supraja sridhar <
>> [email protected]> wrote:
>>
>>> How can I check that?
>>>
>>> Not sure if this helps -
>>>
>>> Build environment:
>>> AKAMAKE_HASH = d41d8cd98f00b204e9800998ecf8427e
>>> BASEOS = linux
>>> CC = clang
>>> CXX = clang++
>>> CXXSTD = default
>>> FILE_OFFSET_BITS = 32
>>> GLOBAL_PIC = pic
>>> OS = alsi9
>>> TARGET_ARCH = x86_64
>>> TARGET_CPU = classic
>>>
>>> Compiler versions:
>>> CC: clang version 5.0.2-svn328729-1~exp1~20180509124008.99
>>> (branches/release_50) /usr/bin/clang
>>> CXX: clang version 5.0.2-svn328729-1~exp1~20180509124008.99
>>> (branches/release_50) /usr/bin/clang++
>>>
>>> Global compiler flags:
>>> CFLAGS: -m64 -march=opteron -mno-3dnow -fpic -ggdb -O2 -Wall
>>> CXXFLAGS: -m64 -march=opteron -mno-3dnow -fpic -ggdb -O2
>>>
>>> -Supraja
>>>
>>> On Thu, Dec 19, 2019 at 10:14 AM Leif Hedstrom <[email protected]> wrote:
>>>
>>>> Are you using the right STL, from LLVM, that had full C++17 support?
>>>>
>>>> — Leif
>>>>
>>>> On Dec 18, 2019, at 21:40, supraja sridhar <[email protected]>
>>>> wrote:
>>>>
>>>>
>>>> Hello,
>>>>
>>>> When building ATS 8.0.5 with clang-5.0 I get the following error -
>>>>
>>>>> 12 make[3]: Entering directory
>>>>> '/home/P4CLIENTS/centaur/centaur/centaur.build/src/tscpp/util'
>>>>> 11 CXX TextView.lo
>>>>> 10 In file included from TextView.cc:26:
>>>>> 9 ../../../include/tscpp/util/TextView.h:37:10: fatal error:
>>>>> 'string_view' file not found
>>>>> 8 #include <string_view>
>>>>> 7 ^~~~~~~~~~~~~
>>>>> 6 1 error generated.
>>>>> 5 Makefile:917: recipe for target 'TextView.lo' failed
>>>>> 4 make[3]: *** [TextView.lo] Error 1
>>>>>
>>>>
>>>> Can you please help out?
>>>>
>>>>
>>>> Thanks
>>>> Supraja
>>>>
>>>>
>>>
>>> --
>>> Regards,
>>> S.SUPRAJA
>>> MIT
>>>
>>
>
> --
> Regards,
> S.SUPRAJA
> MIT
>
