[Development] Build issue with configure -developer-build for qtbase?

Thiago Macieira thiago.macieira at intel.com
Tue May 15 19:42:27 CEST 2012

On terça-feira, 15 de maio de 2012 12.03.30, Carl Schumann wrote:
> clx39:type_check $ g++ --version
> g++ (GCC) 4.1.2 20080704 (Red Hat 4.1.2-50)
> Copyright (C) 2006 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> clx39:type_check $ uname -a
> Linux clx39.fnal.gov 2.6.18-308.4.1.el5PAE #1 SMP Tue Apr 17 15:07:30 EDT
> 2012 i686 i686 i386 GNU/Linux clx39:type_check 
> $ g++ main.cpp && ./a.out
> main.cpp:22: error: integer constant is too large for 'long' type
> clx39:type_check $ 

Oh, sorry, I missed the attachments in the previous email. Here we have the 
likely problem: you're running GCC 4.1. That's not supported, it's too old. At 
least 4.2 is necessary, and that's for Mac OS X's sake.

I highly recommend you upgrade, to at least 4.4. I do notice that you're 
running RHEL 5 and, given the kernel's compilation date, you're still getting 
updates. In turn, I must conclude that RH is not giving updates on the 
compiler. That's unfortunate.

Still, can you try changing the line in question to be:

static const TestData inNativeEndian = { Q_UINT64_C(0x0123456789abcdef), 
0x00c0ffee, 0xcafe, 0xcf, '\0' };

If that works, we should apply the fix. It's the right thing to do anyway.

If it doesn't, I'm not sure we should do anything, actually. This is a unit 
test and I don't expect anyone to be concerned about running the tests with 
GCC 4.1. Aside from miscompilation issues, the result of the tests is the same 
no matter what compiler you use.

Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
     Intel Sweden AB - Registration Number: 556189-6027
     Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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