ST_MakeValid and other functions on libspatialite/GDAL on MacOS with Homebrew

readme.markdown

$ brew install liblwgeom
$ export LDFLAGS="-L/usr/local/opt/liblwgeom/lib"
$ export CPPFLAGS="-I/usr/local/opt/liblwgeom/include"
$ brew edit libspatialite
(add --enable-lwgeom to configure)
$ brew reinstall -s libspatialite
$ brew install -s gdal

The export variables didn't work for me. Had to add the following to the libspatialite brew recipe:

    lwgeom = Formula["liblwgeom"]
    ENV.append "LDFLAGS", "-L#{lwgeom.opt_lib}"
    ENV.append "CFLAGS", "-I#{lwgeom.opt_include}"

thank you!