[geos-devel] using geos C Api

[Rémi Cura]

Hello,
trying to use Geos C Api in a  Cpp program.
The Cpp programm uses CMake.

Apparently the easy way to incorporate GEOS is by copying the QGIS solution.
I copy the FindGEOS.cmake file
<https://raw.githubusercontent.com/qgis/QGIS/master/cmake/FindGEOS.cmake>
then ad the path to it in CMakeList.txt
    set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}")

then using the regular
  FIND_PACKAGE(GEOS REQUIRED)
fills GEOS_LIBRARY and GEOS_INCLUDE_DIR.

Then I add GEOS LIBRARY has a target for link :
TARGET_LINK_LIBRARIES(simple_snapping.bin ${CERES_LIBRARIES}
${GEOS_LIBRARY})


After that I'm stuck,
If I try to use Geos function I get an error by
ld :
" geometry_function.cc:-1: error: undefined reference to
`geos::io::WKTReader::WKTReader()'"

Anybody has an idea of how to fix this?

Cheers,
Rémi-C
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