install rgeos 0.3-28 without error

When I try update rgeos 0.3-24 package in R 3.4.1, I get this error:

* installing to library ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library’
* installing *source* package ‘rgeos’ ...
configure: CC: clang
configure: CXX: clang++
configure: rgeos: 0.3-24
checking for /usr/bin/svnversion... yes
cat: inst/SVN_VERSION: No such file or directory
configure: svn revision: 
checking for geos-config... no
no
configure: error: geos-config not found or not executable.
ERROR: configuration failed for package ‘rgeos’
* removing ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library/rgeos’

* restoring previous ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library/rgeos’

Here is the solution.
First install geos and gdal complete frameworks from here:
http://www.kyngchaos.com/software:frameworks

At the time I write this article, the links are here:

Then load the last version of the rgeos package here (the .tar.gz version):
https://r-forge.r-project.org/R/?group_id=602
At the time I write this article, the link is here:

Then in terminal, enter these commands:

PATH=/Library/Frameworks/GEOS.framework/unix/bin/:$PATH
cd ~/Downloads
R CMD INSTALL rgeos_0.3-28.tar.gz 

You can enter the PATH=/Library/Frameworks/GEOS.framework/unix/bin/:$PATH in your .profile to not get an error next time.

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