GEOS

GEOS is a framework component, not a standalone application — it is a dependency used by larger tools like QGIS, R's sf/rgeos/rgdal packages, and PostGIS rather than something you install directly. The search results indicate that native Apple Silicon support for GEOS via Homebrew remains incomplete as of mid-2026, with active build issues when Apple Silicon Macs try to link against the Homebrew geos package. If you are encountering GEOS linking errors when installing a geospatial tool on your M-series Mac, the most reliable solution is to ensure the host application (the thing that needs GEOS) is using a native Apple Silicon build itself, and then let that application's installer handle GEOS dependency resolution. For R users working with spatial packages (sf, rgeos, rgdal), consider using pre-compiled CRAN binaries for Apple Silicon rather than building from source — the CRAN team maintains arm64-compatible versions of these packages with properly linked GEOS. For QGIS users on Apple Silicon, install QGIS via the official native M-series installer from qgis.org, which bundles a compatible GEOS version. If you are compiling from source and need GEOS, contact your host application's community (R-sig-mac, QGIS mailing list, etc.) for current guidance on Apple Silicon compilation, as this situation is still evolving.