There is an issue in building the bundled c-ares on certain

distributions such as SLES. The cmake file for c-ares sets
'CARES_LIB' destination directory to '${CARES_SRC}/lib' but when the
bundled c-ares is compiled it produces a binary which is placed in
the '${CARES_SRC}/lib64' directory.

This is due to the fact that the bundled c-ares expands
${CMAKE_INSTALL_LIBDIR} to 'lib64' and not to 'lib' which is
expected by 'CARES_LIB'.

The fix is to enforce the building process of the bundled c-ares
to place the produced binary in 'lib'.

Signed-off-by: Tero Kauppinen <tero.kauppinen@est.tech>

cmake/modules/cares.cmake

@@ -47,6 +47,7 @@ else()
 			BUILD_IN_SOURCE 1
 			CMAKE_ARGS -DCMAKE_POLICY_DEFAULT_CMP0091:STRING=NEW
 					   -DCMAKE_MSVC_RUNTIME_LIBRARY=${CMAKE_MSVC_RUNTIME_LIBRARY}
+					   -DCMAKE_INSTALL_LIBDIR=lib
 					   -DCARES_SHARED=${BUILD_SHARED_LIBS}
 					   -DCARES_STATIC=${CARES_STATIC_OPTION}
 					   -DCARES_STATIC_PIC=${ENABLE_PIC}