Problem installing FEAST in R

[NeginValizadegan]

Please help:

devtools::install_github("cozygene/FEAST") Downloading GitHub repo cozygene/FEAST@HEAD ✓ checking for file ‘/private/var/folders/79/6_g1728j4m73vm74lv5r_rwh0000gn/T/RtmpKOLqdH/remotes6be452136c1b/cozygene-FEAST-cf88568/DESCRIPTION’ ... ─ preparing ‘FEAST’: ✓ checking DESCRIPTION meta-information ... ─ cleaning src ─ checking for LF line-endings in source and make files and shell scripts ─ checking for empty or unneeded directories ─ building ‘FEAST_0.1.0.tar.gz’

• installing source package ‘FEAST’ ... using staged installation libs clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I'/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/include' -I'/Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include' -I/usr/local/include -fPIC -Wall -g -O2 -c RcppExports.cpp -o RcppExports.o In file included from RcppExports.cpp:4: In file included from /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/RcppArmadillo.h:31: In file included from /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/RcppArmadilloForward.h:49: In file included from /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo:21: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/compiler_check.hpp:50:4: error: "*** C++11 compiler required; enable C++11 mode in your compiler, or use an earlier version of Armadillo"

  error "*** C++11 compiler required; enable C++11 mode in your compiler, or use an earlier version of Armadillo"

  ^ In file included from RcppExports.cpp:4: In file included from /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/RcppArmadillo.h:31: In file included from /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/RcppArmadilloForward.h:49: In file included from /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo:85: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:149:12: error: unknown type name 'constexpr' static constexpr bool is_row = false; ^ /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:149:22: error: expected member name or ';' after declaration specifiers static constexpr bool is_row = false;

  
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:150:12: error: unknown type name 'constexpr'
  static constexpr bool is_col  = false;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:150:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_col  = false;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:151:12: error: unknown type name 'constexpr'
  static constexpr bool is_xvec = false;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:151:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_xvec = false;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:161:12: error: unknown type name 'constexpr'
  static constexpr bool is_row  = false;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:161:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_row  = false;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:162:12: error: unknown type name 'constexpr'
  static constexpr bool is_col  = false;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:162:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_col  = false;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:163:12: error: unknown type name 'constexpr'
  static constexpr bool is_xvec = true;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:163:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_xvec = true;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:173:12: error: unknown type name 'constexpr'
  static constexpr bool is_row  = false;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:173:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_row  = false;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:174:12: error: unknown type name 'constexpr'
  static constexpr bool is_col  = true;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:174:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_col  = true;
  ~~~~~~~~~~~~~~~~ ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:175:12: error: unknown type name 'constexpr'
  static constexpr bool is_xvec = false;
         ^
  /Library/Frameworks/R.framework/Versions/4.0/Resources/library/RcppArmadillo/include/armadillo_bits/arma_forward.hpp:175:22: error: expected member name or ';' after declaration specifiers
  static constexpr bool is_xvec = false;
  ~~~~~~~~~~~~~~~~ ^
  fatal error: too many errors emitted, stopping now [-ferror-limit=]
  20 errors generated.
  make: *** [RcppExports.o] Error 1
  ERROR: compilation failed for package ‘FEAST’

• removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/FEAST’ Error: Failed to install 'FEAST' from GitHub: (converted from warning) installation of package ‘/var/folders/79/6_g1728j4m73vm74lv5r_rwh0000gn/T//RtmpKOLqdH/file6be44424af32/FEAST_0.1.0.tar.gz’ had non-zero exit status

[NeginValizadegan]

Can anyone help with this, please? I'm on a Mac.

[NeginValizadegan]

This problem was resolved by following instructions here https://thecoatlessprofessor.com/programming/r/uninstalling-the-r-development-toolchain-on-macos/ and https://thecoatlessprofessor.com/programming/cpp/r-compiler-tools-for-rcpp-on-macos/