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 macports-gcc-4.9 > On Apr 1, 2016, at 11:59 PM, Ryan Schmidt <ryandes...@macports.org> wrote: > >> On Apr 1, 2016, at 23:03, Mark Brethen <mark.bret...@gmail.com >> <mailto:mark.bret...@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 > <https://trac.macports.org/wiki/UsingTheRightCompiler>
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