Trouble installing liDR package on Mac OS X due to rdgal package not installing

I am having trouble installing the lidR package on Mac OS X Catalina 10.15.7. I notice from stackoverflow that many others are having similar issues. I have tried installing the binary, and also installing from the source.

Here is the output from installing on RStudio on my Mac:

install.packages("~/Downloads/rgdal_1.5-23.tar.gz", repos = NULL, type = "source")

installing source package ‘rgdal’ ... package ‘rgdal’ successfully unpacked and MD5 sums checked using staged installation configure: R_HOME: /Library/Frameworks/R.framework/Resources configure: CC: clang -mmacosx-version-min=10.13 configure: CXX: clang++ -mmacosx-version-min=10.13 -std=gnu++14 configure: CFLAGS: -Wall -g -O2 configure: CPPFLAGS: -I/usr/local/include configure: CXXFLAGS: -Wall -g -O2 configure: LDFLAGS: -L/usr/local/lib configure: LDFLAGS: -L/usr/local/lib configure: CXX11 is: clang++ -mmacosx-version-min=10.13, CXX11STD is: -std=gnu++11 configure: CXX is: clang++ -mmacosx-version-min=10.13 -std=gnu++11 configure: C++11 support available configure: rgdal: 1.5-23 checking for /usr/bin/svnversion... yes svnversion: error: The subversion command line tools are no longer provided by Xcode. configure: svn revision: 1121 checking for gdal-config... /usr/local/bin/gdal-config checking gdal-config usability... yes configure: GDAL: 3.3.1 checking GDAL version >= 1.11.4... yes checking GDAL version <= 2.5 or >= 3.0... yes checking GDAL: linking with --libs only... yes checking GDAL: gdal-config data directory readable... yes checking GDAL: /usr/local/Cellar/gdal/3.3.1_3/share/gdal/stateplane.csv readable... yes configure: pkg-config proj not available set PKG_CONFIG_PATH to the directory containing proj.pc configure: PROJ version not determined using pkg-config proj configure: PROJ CPP flags: -I/usr/local/Cellar/gdal/3.3.1_3/include configure: PROJ LIBS: -lproj checking PROJ header API:... yes configure: API to be used as yet undetermined, searching ... configure: error: API to be used not found ERROR: configuration failed for package ‘rgdal’
removing ‘/Library/Frameworks/R.framework/Versions/4.1/Resources/library/rgdal’
restoring previous ‘/Library/Frameworks/R.framework/Versions/4.1/Resources/library/rgdal’ Warning in install.packages : installation of package ‘/Users/mackerrow/Downloads/rgdal_1.5-23.tar.gz’ had non-zero exit status

r-lidar / lidR

Trouble installing liDR package on Mac OS X due to rdgal package not installing #462