leptonica: Move libjpeg, libpng and leptonica sources

leptonica/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,33 @@
+##
+# Copyright (C) 2019 Adaptech s.r.o., Robert Pösel
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+##
+
+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html.
+# For more examples on how to use CMake, see https://github.com/android/ndk-samples.
+
+# Sets the minimum CMake version required for this project.
+cmake_minimum_required(VERSION 3.22.1)
+
+# Declares the project name. The project name can be accessed via ${ PROJECT_NAME},
+# Since this is the top level CMakeLists.txt, the project name is also accessible
+# with ${CMAKE_PROJECT_NAME} (both CMake variables are in-sync within the top level
+# build script scope).
+project(leptonica)
+
+# Adds the CMakeLists.txt file located in the specified directory as a build dependency.
+add_subdirectory(libjpeg)
+add_subdirectory(libpng)
+add_subdirectory(leptonica)

leptonica/src/main/cpp/leptonica/CMakeLists.txt

@@ -0,0 +1,89 @@
+##
+# Copyright (C) 2019 Adaptech s.r.o., Robert Pösel
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+##
+
+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html
+
+# Sets the minimum version of CMake required to build the native library.
+
+cmake_minimum_required(VERSION 3.4.1)
+
+# Creates and names a library, sets it as either STATIC
+# or SHARED, and provides the relative paths to its source code.
+# You can define multiple libraries, and CMake builds them for you.
+# Gradle automatically packages shared libraries with your APK.
+
+set(LEPT_PATH "src/src/")
+set(JPEG_PATH "../libjpeg/src/")
+set(PNG_PATH "../libpng/src/")
+
+configure_file(
+        endianness.h.in
+        ${CMAKE_CURRENT_SOURCE_DIR}/${LEPT_PATH}endianness.h @ONLY)
+
+file(GLOB leptonica_src "${LEPT_PATH}*.c")
+file(GLOB leptonica_hdr "${LEPT_PATH}*.h")
+
+add_library( # Sets the name of the library.
+        leptonica
+
+        # Sets the library as a shared library.
+        SHARED
+
+        # Provides a relative path to your source file(s).
+        ${leptonica_src}
+        ${leptonica_hdr}
+        box.cpp
+        boxa.cpp
+        jni.cpp
+        pix.cpp
+        pixa.cpp
+        readfile.cpp
+        utilities.cpp
+        writefile.cpp
+        common.h
+        )
+
+# Specifies a path to native header files.
+include_directories(${LEPT_PATH})
+include_directories(${JPEG_PATH})
+include_directories(${PNG_PATH})
+
+# Define preprocessor constants
+add_definitions(-DANDROID_BUILD)
+add_definitions(-DHAVE_LIBJPEG=1)
+add_definitions(-DHAVE_LIBPNG=1)
+add_definitions(-DHAVE_LIBZ=1)
+#TODO: Enable this when we use minSdkVersion 23 or higher
+#add_definitions(-DHAVE_FMEMOPEN=1)
+
+# Ignore some warnings during build
+target_compile_options(leptonica PRIVATE "-Wno-address-of-packed-member")
+
+# Specifies libraries CMake should link to your target library. You
+# can link multiple libraries, such as libraries you define in this
+# build script, prebuilt third-party libraries, or system libraries.
+
+target_link_libraries( # Specifies the target library.
+        leptonica
+
+        # Links the target library to the z library included in the NDK.
+        log
+        jnigraphics
+        z
+        jpeg
+        pngx
+        )