[Users] Cactus Building Issue

[Haas, Roland]

Hello Shanshan,

you will have gcc-mp-8 installed (or at least that is the version that
macports on my test-only macbook installed). To use it, please replace
all mp-7 by mp-8 in the file.

Steve's suggestion can be used to check that it exists ie

which gcc-mp-8

should return the full path to the compiler and not just "not found".

If gcc is not installed at all you will need to do something like:

sudo port selfupdate
sudo port install gcc8

You should remove the directory configs/sim to make sure simfactory
really builds from scratch.

Yours,
Roland

> Hi Roland and Steve,
> 
> Thank you so much for your prompt reply! I’m compiling it on Mac OS X Mojave. I installed the latest version of Xcode and MacPorts a few days ago and had run the most recent updates. I checked my osx-macports.cfg and it does seem to require gcc-mp-7 (see below). But how do I find out what version of gcc I have in my MacPorts so I can edit them or if my compiler even exists?
> 
> Best wishes,
> Shanshan
> 
> 
> VERSION = osx-macports-2018-02-05
> 
> 
> # Apple's compiler (Clang) does not support OpenMP, so we use GCC instead.
> 
> CPP = cpp-mp-7
> 
> FPP = cpp-mp-7
> 
> CC  = gcc-mp-7
> 
> CXX = g++-mp-7
> 
> F90 = gfortran-mp-7
> 
> 
> CPPFLAGS =
> 
> FPPFLAGS = -traditional
> 
> CFLAGS   = -g -std=c11
> 
> CXXFLAGS = -g -std=c++14
> 
> F90FLAGS = -g -m128bit-long-double -fcray-pointer -ffixed-line-length-none
> 
> 
> 
> 
> On Feb 15, 2019, at 3:26 PM, Steven R. Brandt <sbrandt at cct.lsu.edu<mailto:sbrandt at cct.lsu.edu>> wrote:
> 
> 
> It says your compiler doesn't exist. Are you compiling on ios? What happens when you type "which gcc-mp-7"?
> 
> --Steve
> 
> 
> On Feb 15, 2019, at 12:48 PM, Haas, Roland <rhaas at illinois.edu<mailto:rhaas at illinois.edu>> wrote:
> 
> Hello Shanshan Rodriguez,
> 
> based on the fact that the code complains about gcc-mp-7 you seem to be
> trying to compile Cactus on a mac using macports. Macports
> periodically updates its gcc packages and quite likely the current one
> is gcc-8 in which case the compiler is called gcc-mp-8 g++-mp-8 and
> gfortran-mp-8.
> 
> You should modify the option list that you are using to reflect this.
> In the tutorial this is the file osx-macports.cfg which you can find in
> the simfactory/mdb/optionlists/osx-macports.cfg file.
> 
> I have also just made the required change to the release version
> simfactory files.
> 
> Yours,
> Roland
> 
> Hello,
> 
> I’m a new user of ETK and trying to follow the tutorial to set up Cactus. I ran into this problem building Cactus and hope you could help me resolve it. Here is the commend I’m stuck at:
> 
> %cd $cactus_dir
> !time ./simfactory/bin/sim build -j2 --thornlist=thornlists/einsteintoolkit.th<http://einsteintoolkit.th><http://einsteintoolkit.th>
> 
> Where I got an error message at the end:
> 
> 
> checking whether the C compiler (gcc-mp-7 -g -std=c11 -lgfortran) works... no
> configure: error: installation or configuration problem: C compiler cannot create executables (see configs/<configname>/config-data/config.log for details).
> 
> Error reconfiguring sim-config
> make: *** [sim-config] Error 2
> 
> 
> I’m attaching the config, log file here. Could you suggest what I should do to fix this? Thank you so much!!
> 
> 
> Best,
> Shanshan Rodriguez
> 
> ——————————————————————
> Shanshan Rodriguez
> Assistant Professor of Physics
> 1034 Noyce Science Center
> Department of Physics
> Grinnell College
> Grinnell, IA 50112
> Email: rodriguezs at grinnell.edu<mailto:rodriguezs at grinnell.edu><mailto:rodriguezs at grinnell.edu>
> 
> 
> 
> --
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> 



-- 
My email is as private as my paper mail. I therefore support encrypting
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