llvm dev - Feb 2016 - [llvm-3.8-ec3] cmake-2.8.12 and gcc-4.6: Host compiler appears to require libatomic, but cannot find it.

Hi,

when I switch to an unsupported GCC like v4.6.4 to build LLVM v3.8-rc3
with cmake I get the following:
...
-- Looking for __atomic_fetch_add_4 in atomic
-- Looking for __atomic_fetch_add_4 in atomic - not found
CMake Error at cmake/modules/CheckAtomic.cmake:36 (message):
  Host compiler appears to require libatomic, but cannot find it.
Call Stack (most recent call first):
  cmake/config-ix.cmake:296 (include)
  CMakeLists.txt:407 (include)


-- Configuring incomplete, errors occurred!
See also
"/home/wearefam/src/llvm-toolchain/llvm-build/CMakeFiles/CMakeOutput.log".
See also
"/home/wearefam/src/llvm-toolchain/llvm-build/CMakeFiles/CMakeError.log".

I would like to see something telling me my host-compiler is not
supported and I need a minimum version
( My host-system is Ubuntu/precise AMD64. )

See also "Host C++ Toolchain, both Compiler and Standard Library"...

"For the most popular host toolchains we check for specific minimum
versions in our build systems:

Clang 3.1
GCC 4.7
Visual Studio 2013"

...and "Getting a Modern Host C++ Toolchain" in [1].

CMakeOutput.log and CMakeError.log are attached.

Regards,
- Sedat -

[1] http://llvm.org/docs/GettingStarted.html
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CMakeError.log
Type: text/x-log
Size: 15160 bytes
Desc: not available
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160225/9f6d5bbc/attachment-0002.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CMakeOutput.log
Type: text/x-log
Size: 123133 bytes
Desc: not available
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160225/9f6d5bbc/attachment-0003.bin>

Hopefully r262491 improves the situation here. Now we do the GCC 4.7+ check
earlier.

On Wed, Feb 24, 2016 at 10:17 PM, Sedat Dilek via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi,
>
> when I switch to an unsupported GCC like v4.6.4 to build LLVM v3.8-rc3
> with cmake I get the following:
> ...
> -- Looking for __atomic_fetch_add_4 in atomic
> -- Looking for __atomic_fetch_add_4 in atomic - not found
> CMake Error at cmake/modules/CheckAtomic.cmake:36 (message):
>   Host compiler appears to require libatomic, but cannot find it.
> Call Stack (most recent call first):
>   cmake/config-ix.cmake:296 (include)
>   CMakeLists.txt:407 (include)
>
>
> -- Configuring incomplete, errors occurred!
> See also
>
"/home/wearefam/src/llvm-toolchain/llvm-build/CMakeFiles/CMakeOutput.log".
> See also
>
"/home/wearefam/src/llvm-toolchain/llvm-build/CMakeFiles/CMakeError.log".
>
> I would like to see something telling me my host-compiler is not
> supported and I need a minimum version
> ( My host-system is Ubuntu/precise AMD64. )
>
> See also "Host C++ Toolchain, both Compiler and Standard
Library"...
>
> "For the most popular host toolchains we check for specific minimum
> versions in our build systems:
>
> Clang 3.1
> GCC 4.7
> Visual Studio 2013"
>
> ...and "Getting a Modern Host C++ Toolchain" in [1].
>
> CMakeOutput.log and CMakeError.log are attached.
>
> Regards,
> - Sedat -
>
> [1] http://llvm.org/docs/GettingStarted.html
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160302/70f989a6/attachment.html>

On 3/2/16, Reid Kleckner <rnk at google.com>
wrote:
> Hopefully r262491 improves the situation here. Now we do the GCC 4.7+ check
> earlier.
>
Thanks a lot.

But I am here on llvm.git - do you have the commit subject-line?

Thanks.

- Sedat -
> On Wed, Feb 24, 2016 at 10:17 PM, Sedat Dilek via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi,
>>
>> when I switch to an unsupported GCC like v4.6.4 to build LLVM v3.8-rc3
>> with cmake I get the following:
>> ...
>> -- Looking for __atomic_fetch_add_4 in atomic
>> -- Looking for __atomic_fetch_add_4 in atomic - not found
>> CMake Error at cmake/modules/CheckAtomic.cmake:36 (message):
>>   Host compiler appears to require libatomic, but cannot find it.
>> Call Stack (most recent call first):
>>   cmake/config-ix.cmake:296 (include)
>>   CMakeLists.txt:407 (include)
>>
>>
>> -- Configuring incomplete, errors occurred!
>> See also
>>
"/home/wearefam/src/llvm-toolchain/llvm-build/CMakeFiles/CMakeOutput.log".
>> See also
>>
"/home/wearefam/src/llvm-toolchain/llvm-build/CMakeFiles/CMakeError.log".
>>
>> I would like to see something telling me my host-compiler is not
>> supported and I need a minimum version
>> ( My host-system is Ubuntu/precise AMD64. )
>>
>> See also "Host C++ Toolchain, both Compiler and Standard
Library"...
>>
>> "For the most popular host toolchains we check for specific
minimum
>> versions in our build systems:
>>
>> Clang 3.1
>> GCC 4.7
>> Visual Studio 2013"
>>
>> ...and "Getting a Modern Host C++ Toolchain" in [1].
>>
>> CMakeOutput.log and CMakeError.log are attached.
>>
>> Regards,
>> - Sedat -
>>
>> [1] http://llvm.org/docs/GettingStarted.html
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>