html and postscript viewer

[Joshua Root]

BTW, the author of that guide also seems to be under the mistaken 
impression that Xcode includes GCC 5.1...

- Josh

On 2016-4-2 20:45 , Joshua Root wrote:
> Sounds like they could use some help with their code. If you want to
> make your own version of a function like abs that behaves differently to
> the stdlib one, defining a macro with the same name is not the way to go
> about it. It's likely to misbehave regardless of which compiler you use,
> just because of the way C preprocessing works.
>
> Have you tried just compiling with clang and seeing what happens?
>
> - Josh
>
> On 2016-4-2 18:04 , Mark Brethen wrote:
>>  From their installation guide:
>>
>> For the compilation of cgx, therefore, the unmodified GCC 4.9 is
>> required because the modified (by Apple) GCC for several reasons is not
>> suitable for the compilation of cgx … The modified GCC includes the
>> individual compilers: gcc (GNU c compiler), g++ and clang. Because the
>> modified GCC has a problem with function overloading it is not suitable
>> for the 2compilation of cgx.
>>
>> 2In particular, the compilation of function: #define abs(x) ((x) >= 0 ?
>> (x) : -(x)) in the cgx-routine: “extUtil.h“ causes a compiler error. A
>> bug fix for the compiler was not available at the time the installation
>> of cgx was tested.
>>
>>
>> I have looked at that link but it doesn’t explain how, for example, to
>> set a default compiler. The compilers group gives more instruction, but
>> it’s not completely clear to me. I guess something like
>>
>> compilers.choose    cc cxx cpp
>> configure.cc <http://configure.cc> macports-gcc-4.9
>>
>>
>>> On Apr 1, 2016, at 11:59 PM, Ryan Schmidt <ryandesign at macports.org
>>> <mailto:ryandesign at macports.org>> wrote:
>>>
>>>> On Apr 1, 2016, at 23:03, Mark Brethen <mark.brethen at gmail.com
>>>> <mailto:mark.brethen at gmail.com>> wrote:
>>>>
>>>> I’ve run into a snag building calculix. glut and libSNL are libraries
>>>> that calculix uses. I set
>>>>
>>>> "compiler.whitelist      macports-gcc-4.9”
>>>>
>>>> per the developers instructions.
>>>
>>> Why? We usually do not want to use FSF GCC.
>>>
>>>> However there isn’t a configure so I’m not sure what else needs to be
>>>> passed.
>>>>
>>>> subport ${name}-cgx {
>>>>   revision                0
>>>>   master_sites http://www.dhondt.de/
>>>>   distname                cgx_${version}.all
>>>>
>>>>   checksums               rmd160
>>>>  02302101f16c2b4cdd570e81986cc4d36c2110d8 \
>>>>       sha256
>>>> 64810dab1c22152c7946282fac5763cc36b9e31e309f962c23b8bf8238537c7e
>>>>
>>>>   depends_run-append      port:openbrowser
>>>>
>>>>   worksrcdir              CalculiX
>>>>   build.dir               ${worksrcpath}/cgx_${version}/src
>>>>   build.target
>>>>
>>>>   compiler.whitelist      macports-gcc-4.9
>>>>
>>>>   patchfiles              patch-cgx-build.diff \
>>>>       patch-libSNL-build.diff
>>>>   patch.dir               ${workpath}
>>>>
>>>>   post-patch {
>>>>       reinplace "s|@@PREFIX@@|${prefix}|g" \
>>>>           ${worksrcpath}/cgx_${version}/src/cgx.h
>>>>   }
>>>>
>>>>   use_configure           no
>>>>
>>>> livecheck.regex         {ccx_${version}.all}
>>>> }
>>>
>>> When you set "use_configure no", you must add code to use the right
>>> compiler and -arch flags and offer a universal variant. See:
>>>
>>> https://trac.macports.org/wiki/UsingTheRightCompiler
>>
>