[Magick-bugs] Getting magick to compile on AIX with xlC and xlc

[Rich Cook]

First, let me say, sorry for the vague error reporting.  I'm glad to  
see your interest in this.

On Apr 28, 2008, at 5:27 PM,  
duc.sequere.aut.de.via.decede at imagemagick.org wrote:

>> Also, you might get an error due to the use of C++-style comments in
>
> We removed these from ImageMagick 6.4.1-0 Beta (available sometime  
> tomorrow).

Cool!

>
>> "Macro name blahblahblah cannot be redefined."
>
> Can you post one or two of these messages so we know which macros  
> to fix?

They are not in ImageMagick per se, they come out of autoconf and  
result in the following kinds of errors:

-------------------------------------------------------------
Checking for TIFF support
-------------------------------------------------------------
checking tiff.h usability... no
checking tiff.h presence... yes
configure: WARNING: tiff.h: present but cannot be compiled
configure: WARNING: tiff.h:     check for missing prerequisite headers?
configure: WARNING: tiff.h: see the Autoconf documentation
configure: WARNING: tiff.h:     section "Present But Cannot Be Compiled"
configure: WARNING: tiff.h: proceeding with the preprocessor's result
configure: WARNING: tiff.h: in the future, the compiler will take  
precedence
checking for tiff.h... yes
checking tiffio.h usability... no
checking tiffio.h presence... yes
configure: WARNING: tiffio.h: present but cannot be compiled
configure: WARNING: tiffio.h:     check for missing prerequisite  
headers?
configure: WARNING: tiffio.h: see the Autoconf documentation
configure: WARNING: tiffio.h:     section "Present But Cannot Be  
Compiled"
configure: WARNING: tiffio.h: proceeding with the preprocessor's result
configure: WARNING: tiffio.h: in the future, the compiler will take  
precedence
checking for tiffio.h... yes

If you look in the config.log file and search for "cannot be  
compiled", you see this:

configure:37636: xlc -c  -I/usr/global/tools/ImageMagick/6.3.4/ 
aix_5_64_fed-break/include -L/usr/global/tools/ImageMagick/6.3.4/ 
aix_5_64_fed-break/lib -g -qlanglvl=extended -qcpluscmt -g - 
qcpluscmt  -I/opt/freeware/include/freetype2 -I/opt/freeware/include - 
I/opt/freeware/include    -I/usr/global/tools/ImageMagick/6.3.4/ 
aix_5_64_fed-break/include -L/usr/global/tools/ImageMagick/6.3.4/ 
aix_5_64_fed-break/lib -g -qlanglvl=extended -qcpluscmt -g -qcpluscmt  
-I/usr/global/tools/ImageMagick/6.3.4/aix_5_64_fed-break/ 
ImageMagick-6.3.4/magick -I/usr/global/tools/ImageMagick/6.3.4/ 
aix_5_64_fed-break/ImageMagick-6.3.4/wand  conftest.c >&5
"/opt/freeware/include/tiff.h", line 77.14: 1506-334 (S) Identifier  
int8 has already been defined on line 618 of "/usr/include/sys/ 
inttypes.h".
"/opt/freeware/include/tiff.h", line 86.14: 1506-334 (S) Identifier  
int32 has already been defined on line 620 of "/usr/include/sys/ 
inttypes.h".

This is the kind of thing I'm talking about.  I'm not sure you can  
fix this easily, since it's really a "problem with libtiff", but  
maybe there is an autoconf knob you can turn for this.  By default,  
xlc is VERY picky, but setting -qlanglvl=extended makes it act more  
"gnu-like"


>
> Thanks.
>

-- 
✐Richard Cook
✇ Lawrence Livermore National Laboratory
Bldg-453 Rm-4037, Mail Stop L-557
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☎ (fax) (925) 423-6961
---
Information Management & Graphics Grp., Services & Development Div.,  
Integrated Computing & Communications Dept.
(opinions expressed herein are mine and not those of LLNL)