Hi.
I tried to install multcomp but following error happens all the time.
downloaded but it says
- installing source package ‘mvtnorm’ ...
** package ‘mvtnorm’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
clang -mmacosx-version-min=10.13 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/include -fPIC -Wall -g -O2 -c C_FORTRAN_interface.c -o C_FORTRAN_interface.o
clang -mmacosx-version-min=10.13 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/include -fPIC -Wall -g -O2 -c miwa.c -o miwa.o
gfortran -mmacosx-version-min=10.13 -fno-optimize-sibling-calls -fPIC -Wall -g -O2 -c mvt.f -o mvt.o
make: gfortran: No such file or directory
make: *** [mvt.o] Error 1
ERROR: compilation failed for package ‘mvtnorm’ - removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/mvtnorm’
Warning in install.packages :
installation of package ‘mvtnorm’ had non-zero exit status
The downloaded source packages are in
‘/private/var/folders/dd/21svxs313wjfmtnhm2qvchkh0000gn/T/RtmpWNrxCo/downloaded_packages’
install.packages("multcomp")
also installing the dependency ‘mvtnorm’
I also ran '$ xcode-select --install' command in Terminal but couldn't solve.
I'm Mac user & r and r-studio is the latest version.