PARQUET-634: Consistent private linking of dependencies

Link all (static) third-party dependencies privately to not expose their API.

Also combine all static libs containing public interfaces into one. To correctly link against parquet_static from another lib, you still need all thirdparty static libs but at least the main parquet static library is only a single one. Will address the scenario "single static lib with all dependencies included" later once we have visibility macros.

Author: Uwe L. Korn <uwelk@xhochy.com>

Closes apache#120 from xhochy/parquet-634 and squashes the following commits:

7059b74 [Uwe L. Korn] PARQUET-634: Consistent private linking of dependencies

Change-Id: I7d32dc4b129e15109fe5e7003b7401c485c1b8a8

Author: xhochy

cpp/src/parquet/compression/CMakeLists.txt

@@ -15,19 +15,6 @@
 # specific language governing permissions and limitations
 # under the License.
 
-add_library(parquet_compression STATIC
-  codec.cc
-  snappy-codec.cc
-  gzip-codec.cc
-)
-target_link_libraries(parquet_compression
-  snappystatic
-  zlibstatic)
-
-set_target_properties(parquet_compression
-  PROPERTIES
-  LIBRARY_OUTPUT_DIRECTORY "${BUILD_OUTPUT_ROOT_DIRECTORY}")
-
 # Headers: compression
 install(FILES
   codec.h

cpp/src/parquet/util/CMakeLists.txt

@@ -36,15 +36,6 @@ install(FILES
   sse-util.h
   DESTINATION include/parquet/util)
 
-add_library(parquet_util STATIC
-  buffer.cc
-  cpu-info.cc
-  input.cc
-  mem-allocator.cc
-  mem-pool.cc
-  output.cc
-)
-
 if(PARQUET_BUILD_TESTS)
   add_library(parquet_test_main
 	test_main.cc)