# CMake toolchain file for ARM Roku Linux cross-compilation
# Target: 32-bit ARM with soft-float ABI for compatibility
# Auto-detects Roku toolchain installation

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

# Set the target architecture for Roku toolchain
set(CMAKE_LIBRARY_ARCHITECTURE arm-linux-gnueabi)

# Use toolchain from PATH environment variable
# The build script should set PATH to include the toolchain bin directory

# Find toolchain tools from PATH
find_program(CMAKE_C_COMPILER arm-roku-linux-gnueabi-gcc)
find_program(CMAKE_CXX_COMPILER arm-roku-linux-gnueabi-g++)
find_program(CMAKE_AR arm-roku-linux-gnueabi-ar)
find_program(CMAKE_STRIP arm-roku-linux-gnueabi-strip)
find_program(CMAKE_RANLIB arm-roku-linux-gnueabi-ranlib)

# Verify all tools are found
if(NOT CMAKE_C_COMPILER)
    message(FATAL_ERROR "arm-roku-linux-gnueabi-gcc not found in PATH\nPlease run ./build_roku.sh to setup toolchain")
endif()

message(STATUS "Using Roku toolchain from PATH:")
message(STATUS "  GCC: ${CMAKE_C_COMPILER}")
message(STATUS "  G++: ${CMAKE_CXX_COMPILER}")
message(STATUS "  AR: ${CMAKE_AR}")

# Compiler flags for ARM32 with soft-float ABI to ensure compatibility
set(CMAKE_C_FLAGS "-march=armv7-a -mfpu=vfp -mfloat-abi=softfp" CACHE STRING "C flags")
set(CMAKE_CXX_FLAGS "-march=armv7-a -mfpu=vfp -mfloat-abi=softfp" CACHE STRING "CXX flags")

# Linker flags
set(CMAKE_EXE_LINKER_FLAGS "-Wl,--hash-style=gnu" CACHE STRING "Executable linker flags")
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--hash-style=gnu" CACHE STRING "Shared library linker flags")

# Search for programs in the build host directories
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

# Search for libraries and headers in the target directories
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

# Disable intrinsics and NEON for compatibility with soft-float ABI
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DDISABLE_NEON_INTRINSICS")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DDISABLE_NEON_INTRINSICS")