html and postscript viewer

[Mark Brethen]

It fails in a similar fashion, which is why I don’t think my first attempt actually used gcc 4.9. What are the commands to set a default compiler?


> On Apr 2, 2016, at 4:45 AM, Joshua Root <jmr at macports.org> 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
>> 
>