Enable OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB flag

lmdb is added to external libraries. CMakeLists.txt.lmdb.in and
lmdbConfig.cmake.in was created for lmdb.
Changes in olp-cpp-sdk-core and external CMakeLists.txt was made.
Added OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB option to be able to
enable/disable build of lmdb. README.md was changed with
description of a new flag.

Relates-To: OLPEDGE-2645

Signed-off-by: Yevhen Krasilnyk <ext-yevhen.krasilnyk@here.com>

Author: Smartkras

CMakeLists.txt

@@ -42,8 +42,8 @@ option(OLP_SDK_BUILD_EXTERNAL_DEPS "Download and build external dependencies" ON
 option(OLP_SDK_BUILD_EXAMPLES "Enable examples targets" OFF)
 option(OLP_SDK_MSVC_PARALLEL_BUILD_ENABLE "Enable parallel build on MSVC" ON)
 option(OLP_SDK_DISABLE_DEBUG_LOGGING "Disable debug and trace level logging" OFF)
-option(OLP_SDK_ENABLE_DEFAULT_CACHE "Enable default cache implementation" ON)
-option(OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB "Enable default cache implementation based on LMDB" OFF)
+option(OLP_SDK_ENABLE_DEFAULT_CACHE "Enable default cache implementation based on LevelDB" OFF)
+option(OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB "Enable default cache implementation based on LMDB" ON)
 
 # C++ standard version. Minimum supported version is 11.
 set(CMAKE_CXX_STANDARD 11)

examples/android/app/CMakeLists.txt.in

@@ -40,6 +40,10 @@ find_package(olp-cpp-sdk-dataservice-write REQUIRED)
 find_package(leveldb REQUIRED)
 find_package(Threads REQUIRED)
 
+if(OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB)
+    find_package(lmdb REQUIRED)
+endif()
+
 add_library(@OLP_SDK_EXAMPLE_TARGET_NAME@ SHARED
         ${CMAKE_CURRENT_SOURCE_DIR}/src/main/cpp/Examples.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/main/cpp/ReadExample.h

examples/android/app/build.gradle.in

@@ -21,13 +21,16 @@ android {
                 //  2. OLP_SDK_HTTP_CLIENT_JAR - path to the OlpHttpClient.jar file; usually it stored in the <olp-build-folder>/olp-cpp-sdk-core/
                 //  3. (If not installed to the sysroot) path to the levelDB library:
                 //      - leveldb_DIR;
-                //  4. (If not installed to the sysroot) - path to the OLP SDK cmake config files:
+                //  4. (If not installed to the sysroot) path to the lmdb library:
+                //      - lmdb_DIR;
+                //  5. (If not installed to the sysroot) - path to the OLP SDK cmake config files:
                 //      - olp-cpp-sdk-core_DIR;
                 //      - olp-cpp-sdk-dataservice-write_DIR;
                 //      - olp-cpp-sdk-authentication_DIR
                 arguments "@OLP_SDK_EXAMPLE_ANDROID_TOOLCHAIN_FILE@",
                         "@OLP_SDK_EXAMPLE_HTTP_CLIENT_JAR@",
                         "@OLP_SDK_EXAMPLE_LEVELDB_DIR@",
+                        "@OLP_SDK_EXAMPLE_LMDB_DIR@",
                         // required for finding installed packages in sysroot
                         "-DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=BOTH",
                         "-DBOOST_ROOT=@BOOST_ROOT@",

examples/cmake/gen_android_example.cmake.in

@@ -60,6 +60,13 @@ function(gen_android_example_application
     if (DEFINED leveldb_DIR)
         set(OLP_SDK_EXAMPLE_LEVELDB_DIR "-Dleveldb_DIR=${leveldb_DIR}")
     endif()
+	
+    if(OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB)
+        set(OLP_SDK_EXAMPLE_LMDB_DIR "-Dlmdb_DIR='path to the directory which contains LMDB cmake config files'")
+        if (DEFINED lmdb_DIR)
+            set(OLP_SDK_EXAMPLE_LMDB_DIR "-Dlmdb_DIR=${lmdb_DIR}")
+        endif()
+    endif()
 
     configure_file(
         ${CMAKE_CURRENT_SOURCE_DIR}/android/app/build.gradle.in

external/CMakeLists.txt

@@ -82,6 +82,7 @@ if(OLP_SDK_ENABLE_DEFAULT_CACHE_LMDB)
     find_package(lmdb QUIET)
     if(NOT TARGET lmdb AND NOT lmdb_FOUND)
         add_subdirectory(lmdb)
+        set(lmdb_DIR ${EXTERNAL_lmdb_DIR} PARENT_SCOPE)
         set(lmdb_INCLUDE_DIR ${EXTERNAL_lmdb_INCLUDE_DIR} PARENT_SCOPE)
     endif()
 endif()

external/lmdb/CMakeLists.txt

@@ -45,4 +45,5 @@ if(result)
 endif()
 
 # Provide the dir to the lmdb cmake configuration files
+set(EXTERNAL_lmdb_DIR ${EXTERNAL_BINARY_INSTALL_DIR}/lib/cmake/lmdb PARENT_SCOPE)
 set(EXTERNAL_lmdb_INCLUDE_DIR ${EXTERNAL_BINARY_INSTALL_DIR}/include PARENT_SCOPE)

scripts/linux/psv/build_psv_no_cache.sh

@@ -23,6 +23,7 @@ cd build
 cmake \
     -DOLP_SDK_ENABLE_TESTING=OFF \
     -DOLP_SDK_ENABLE_DEFAULT_CACHE=OFF \
+    -DOLP_SDK_ENABLE_DEFAULT_CACHE_LMDB=OFF \
     -DBUILD_SHARED_LIBS=ON \
     ..