Initial commit

app/src/main/cpp/CMakeLists.txt

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+# CMakeLists.txt
+# Sets the minimum version of CMake required.
+cmake_minimum_required(VERSION 3.22.1)
+
+# Declares the project name.
+project("reader-native")
+
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,max-page-size=16384")
+set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,max-page-size=16384")
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
+
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+# --- CONFIGURE SUBPROJECTS ---
+# Force subprojects to build as static libraries. This is critical for Android.
+set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared libraries" FORCE)
+set(BROTLI_DISABLE_TESTS ON CACHE BOOL "Disable Brotli tests" FORCE)
+
+
+# ===================================================================
+# WOFF2 DEPENDENCY SETUP
+# ===================================================================
+# 1. Add the brotli project. This defines the `brotlidec-static` target.
+add_subdirectory(woff2/brotli)
+
+# 2. Manually define the variables that the woff2/CMakeLists.txt script expects.
+set(BROTLIDEC_FOUND TRUE)
+set(BROTLIENC_FOUND TRUE)
+set(BROTLIDEC_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/woff2/brotli/c/include)
+set(BROTLIENC_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/woff2/brotli/c/include)
+set(BROTLIDEC_LIBRARIES brotlidec-static)
+set(BROTLIENC_LIBRARIES brotlienc-static)
+
+# 3. Add the woff2 project. This defines the `woff2dec` target.
+add_subdirectory(woff2)
+
+
+# ===================================================================
+# LIBMOBI DEPENDENCY SETUP
+# ===================================================================
+# 4. Set libmobi options before adding it.
+#    We disable libxml2 to use the internal writer, simplifying dependencies.
+#    We also disable encryption for now for the same reason.
+set(USE_LIBXML2 OFF CACHE BOOL "Use libxml2" FORCE)
+set(USE_ENCRYPTION OFF CACHE BOOL "Enable encryption" FORCE)
+
+# Temporarily enable shared libs to build libmobi as a .so file for LGPL compliance.
+set(BUILD_SHARED_LIBS ON)
+# 5. Add the libmobi project. This will define the `mobi` target as a shared library.
+add_subdirectory(libmobi)
+
+set_target_properties(mobi PROPERTIES VERSION "" SOVERSION "")
+# Revert back to building static libs for any subsequent dependencies.
+set(BUILD_SHARED_LIBS OFF)
+
+# Force all symbols in the mobi shared library to be visible.
+# This is necessary because some internal functions we use (like mobi_determine_flowpart_type)
+# are not explicitly exported by the library's public API for shared builds.
+set_target_properties(mobi PROPERTIES C_VISIBILITY_PRESET default)
+
+
+# ===================================================================
+# FINAL NATIVE LIBRARY FOR THE APP
+# ===================================================================
+# 6. Define our final JNI wrapper library.
+#    This single .so file will be loaded by the Android app.
+add_library(
+        native-lib
+        SHARED
+        Woff2Converter.cpp
+        mobi_jni_bridge.c  # The placeholder file you created
+)
+
+# 7. Tell our library where to find all necessary header files.
+target_include_directories(native-lib
+        PRIVATE
+        ${CMAKE_CURRENT_SOURCE_DIR}/woff2/include
+        ${CMAKE_CURRENT_SOURCE_DIR}/libmobi/src
+)
+
+# 8. Find the Android logging and zlib libraries.
+find_library(log-lib log)
+find_library(z-lib z)
+
+# 9. Link our final library against all the static libraries and Android libraries.
+target_link_libraries(
+        native-lib
+        PRIVATE
+        woff2dec      # From woff2
+        mobi          # From libmobi
+        ${log-lib}
+        ${z-lib}      # libmobi requires zlib
+)