Eucild install fails on Mac

[Mikedafish]

Running on Intel Mac OS Ventura 13.6.3 , RStudio 2023.12.1+402, R (2023-10-31, Eye Holes)

First hurdle: installation failed 'cause mpfr not installed . Problem solved.

Second hurdle: I am getting the error log copied below with one error and one warning both outside my competence level!

Please advise.

Regards
M.P.

================================ Log copied from RSTUDIO
remotes::install_github("thomasp85/euclid")
Downloading GitHub repo thomasp85/euclid@HEAD
Running R CMD build...

• checking for file ‘/private/var/folders/d9/0_vkl4tn39dg7ly6qjxblxfr0000gr/T/Rtmph2NaaT/remotes140c958ec5091/thomasp85-euclid-e9b7c93/DESCRIPTION’ ... OK
• preparing ‘euclid’:
• checking DESCRIPTION meta-information ... OK
• cleaning src
• running ‘cleanup’
• checking for LF line-endings in source and make files and shell scripts
• checking for empty or unneeded directories
• building ‘euclid_0.0.0.9000.tar.gz’
• installing source package ‘euclid’ ...
  ** using staged installation
  Found pkg-config cflags and libs!
  Using PKG_CFLAGS=-I/opt/local/include
  Using PKG_LIBS=-L/opt/local/lib -lmpfr -lgmp
  ** libs
  using C++ compiler: ‘Apple clang version 15.0.0 (clang-1500.1.0.2.5)’
  using C++14
  using SDK: ‘’
  clang++ -arch x86_64 -std=gnu++14 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DCGAL_DO_NOT_USE_BOOST_MP -DCGAL_USE_GMPXX -DCGAL_NDEBUG -I/opt/local/include -I../inst/include/internal/ -I'/Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cpp11/include' -I'/Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include' -I'/Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/BH/include' -I/opt/R/x86_64/include -fPIC -falign-functions=64 -Wall -g -O2 -c api.cpp -o api.o
  In file included from api.cpp:7:
  In file included from ../inst/include/internal/cgal_types.h:5:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Exact_predicates_exact_constructions_kernel.h:20:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Simple_cartesian.h:20:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Cartesian/Cartesian_base.h:62:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Cartesian/function_objects.h:20:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Kernel/function_objects.h:29:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/intersection_3.h:59:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Intersections_3/Plane_3_Triangle_3.h:25:
  /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Intersections_3/internal/Plane_3_Triangle_3_intersection.h:144:65: error: no member named 'prior' in namespace 'boost'
  k.construct_segment_3_object()(*pts.begin(), *boost::prior(pts.end())));
  ~~~~~~~^
  In file included from api.cpp:7:
  In file included from ../inst/include/internal/cgal_types.h:5:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Exact_predicates_exact_constructions_kernel.h:20:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Simple_cartesian.h:20:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Cartesian/Cartesian_base.h:62:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Cartesian/function_objects.h:20:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Kernel/function_objects.h:29:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/intersection_3.h:86:
  In file included from /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Intersections_3/Triangle_3_Triangle_3.h:26:
  /Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/cgalh/include/CGAL/Intersections_3/internal/Triangle_3_Triangle_3_intersection.h:54:7: warning: variable 'pt_added' set but not used [-Wunused-but-set-variable]
  int pt_added = 0;
  ^
  1 warning and 1 error generated.
  make: *** [api.o] Error 1
  ERROR: compilation failed for package ‘euclid’
• removing ‘/Library/Frameworks/R.framework/Versions/4.3-x86_64/Resources/library/euclid’
  Warning message:
  In i.p(...) :
  installation of package ‘/var/folders/d9/0_vkl4tn39dg7ly6qjxblxfr0000gr/T//Rtmph2NaaT/file140c9818dff9/euclid_0.0.0.9000.tar.gz’ had non-zero exit status

[DOSull]

I am getting the same issue, except that my gmp and mpfr are in /opt/homebrew/.... It's also way beyond my expertise to know how to fix this - any help much appreciated. I'd really like to get access to arithmetic precision computational geometry!