R CMD CHECK warning "<mpfr.h> cannot be found and the GMP support in CGAL requires it."
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Hi @dickoa, I tested the installation without the Remotes: gitlab::dickoa/cgal4h link in DESCRIPTION and it worked just fine. However I noticed that travis CI threw a warning that I wasn't getting locally, but going back to a previous commit showed it was there already (on travis). The warning is related to a CGAL number type and it seems it doesn't find the following header file:
Found the following significant warnings:
warning "<mpfr.h> cannot be found and the GMP support in CGAL requires it.
Less efficient number types will be used instead. Define CGAL_NO_GMP=1 if that is on purpose.
I'm making this a new issue because I didn't notice it before. But i's not related to installing cgal4h from CRAN so that went just fine. Do you have an idea how to fix that? I will try the recommended quick fix by adding -DCGAL_NO_GMP=1 to Makevars.
I'm also building a tool that rely on cgal4h and for the windows Makevars I added this my flags:
-DCGAL_DISABLE_GMP
Does -DCGAL_NO_GMP=1 also works ?
For Linux, I made a config file that check if gmp/mpfr are in the system and add the appropriate flags. I don't know how to do this in windows but I will keep you updated as soon as I find a solution. For the moment, I disabled GMP for windows build of my package prepr. You can have a look at my configure.ac and Makevars.in/Makevars.win.
Let me know if you find a good solution/tradeoff.
Best,