[CMake] Need cmake to work on AIX 5.3

[Bill Hoffman]

On 10/9/2012 3:06 PM, Arindam Mukherjee wrote:
> On Tue, Oct 9, 2012 at 9:21 PM, Bill Hoffman <bill.hoffman at kitware.com> wrote:
>> On 10/9/2012 5:58 AM, Arindam Mukherjee wrote:
>>>
>>> Hi,
>>>
>>> I have to get a build of my product on AIX 5.3 (powerpc) because of
>>> backward compatibility concerns. The product builds fine on such a
>>> system using conventional gmake. However, cmake fails to identify the
>>> xlc/xlC compilers correctly and reports them as broken. What is the
>>> way to fix this?
>>>
>>> Could I force cmake to recognize the compilers correctly in some
>>> manual way. I tried using CMAKE_FORCE_C_COMPILER and
>>> CMAKE_FORCE_CXX_COMPILER but it didn't work. I am not sure of the
>>> arguments to pass either. Any help is greatly appreciated.
>>
>> Can you post the errors that you are getting?  There is no way to help with
>> the information you have posted.  You need the compiler to work, forcing it
>> will just cause trouble later.
>>
>> We test on two different AIX machines nightly, so the compilers should work.
>>
>
> Hi Bill,
>
> Here is the output of running cmake version 2.8.9 on AIX 5.2.
>
> http://pastebin.com/yM46Ncse
>
> What I can see is that cmake fails to identify the compiler. Perhaps
> for that reason it seems to be trying an erroneous command-line later:
>
> /usr/bin/xlc_r CMakeFiles/cmTryCompileExec3576455604.dir/testCCompiler.c.o
> -o cmTryCompileExec3576455604 /usr/lib /lib
>
> I have got the same results by exporting CC=xlc and CXX=xlC and also
> CC=xlc_r and CXX=xlC_r. The version of IBM Visual Age on these
> machines is v7.0. I do not encounter any problems with normal Makefile
> based builds using this toolchain.
>
> I built cmake from source on this machine without any problems. I have
> a functional cmake-based build of my product on AIX 6.1 and Visual Age
> v8.0 which runs without any issues.
>
> Thanks.
> Arindam
>

OK, so somehow it is adding  /usr/lib /lib to the link line....  Can you 
send your CMakeCache.txt file and the files in here: CMakeFiles/

-Bill



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Bill Hoffman
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