Le 29/04/2025 à 14:43, Nils Lüschow a écrit :
Hello everybody,
as a new feature for the anticlust package (https://cran.r-project.org/
web/packages/anticlust/index.html) we are trying to include a constraint
programming model, written in C++ utilizing the Gecode solver. While we
generally got this feature to work when Gecode is pre-installed on the
system, we would like to spare the users this step and include it with
the package (or inside a supplementary package) to install through the
regular R tooling. However, we run into a problem when it comes to
compiling Gecode during the packages build-process, which I describe in
this SO post:
https://stackoverflow.com/questions/79596214/configure-script-does-not-
generate-makefile-properly-for-3rd-party-library-used
I strongly suspect the Makevars file to be incorrect, if you want to
take a look or try to compile it yourself, I have uploaded the code of
the new feature as well as the source files of the Gecode library to
GitHub:
https://github.com/nilslueschow/Anticlust-Dispersion-Constraint-Model/
tree/main/RcppTestPackage/src
I don't know if it is the source of your problem but it's safer to use
CC and CXX variables provided by R building process (they are already
predefined when you are in Makevars) which minimize the risks of
incompatibility between R and your library. So instead of
cd $(GECODE_DIR) && $(MAKE)
I'd use something like
$(MAKE) -C $(GECODE_DIR) CC="$(CC)" CXX="$(CXX)" CXXFLAGS="$(CXXFLAGS)"
Best,
Serguei.
Thanks for your help!
Best,
Nils Lüschow
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