Bug#20259578 MAIN.GIS-PRECISE FAILS IN EMBEDDED MODE ON 32-BIT PLATFORMS

On 32-bit platforms sqrt(nan) and/or sqrt(-nan) returns a finite value
instead of nan/-nan.

Fix: implement a workaround for call to std::sqrt within the
boost::geometry::math namespace

Author: Tor Didriksen

cmake/boost.cmake

@@ -263,3 +263,8 @@ MESSAGE(STATUS "BOOST_INCLUDE_DIR ${BOOST_INCLUDE_DIR}")
 
 # We have a limited set of patches/bugfixes here:
 SET(BOOST_PATCHES_DIR "${CMAKE_SOURCE_DIR}/include/boost_1_57_0")
+
+# Bug in sqrt(NaN) on 32bit platforms
+IF(SIZEOF_VOIDP EQUAL 4)
+  ADD_DEFINITIONS(-DBOOST_GEOMETRY_SQRT_CHECK_FINITENESS)
+ENDIF()