[Libreoffice] [PATCH] fixing some errors when building with clang on linux

Stephan Bergmann sbergman at redhat.com
Tue Jan 3 03:18:56 PST 2012

On 01/02/2012 08:11 PM, August Sodora wrote:
> For the past couple of weeks I've been trying to build LO with clang
> on linux and have hit a couple of obstacles. I can't get the internal
> nss to build and I didn't even try to enable mozilla because it fails
> to build on ubuntu anyway. The -Qunused-arguments is really to silence
> warnings from clang that -ggdb2 and other options are not recognized.
> Ultimately, I can complete make with

Sounds great.  My attempts always failed due to 
<http://llvm.org/bugs/show_bug.cgi?id=11250> "no code emitted for 
virtual inline function inherited indirectly from class template". 
Interesting that that does not hit you, too -- or do you somehow disable 
hidden visibility?

 From my past attempts (unxlngx6) I still have a patch file around that 
is attached.  Maybe it is useful (I always intended to follow up, but 
somehow never found the time).  It does contain a fix for nss (assembler 
comments needing to start with "#" instead of "/").

> The first patch attached fixes an error related to implicitly
> converting constants to a type that should be too small to hold the
> constant. I've added static_casts to make the situation a lot more
> explicit which also suppresses the error, I'm just not sure that this
> is a real solution.

The literal 0x80000000 that is used to initialize sal_Int32 
SvxMSDffHandle.nRangeYMin at 
svx/source/customshapes/EnhancedCustomShapeGeometry.cxx:164 etc. is 
probably better replaced with SAL_MIN_INT32.  Checking all the various 
places, what the best fix would be (change the relevant var. from 
sal_Int32 to sal_uInt32, etc.) would surely be tedious...

> The second and third patches simply fix warnings that flood the screen
> so often that it makes it difficult to diagnose other problems.

Also see my attached patch.  (I prefer removing names of unused 
parameters, instead of adding "(void)x;" lines; also, additional patches 
should go to the end of PATCH_FILES, as "dmake create_patch" creates 
them against all previous patches already applied.)

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