CMakeLists.compat.txt

string(TOLOWER "${CMAKE_SYSTEM_NAME}" CXXBRIDGE_GEN_TARGET_OS)

if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
    # no-op
elseif (CMAKE_SYSTEM_NAME STREQUAL "Android")
    # no-op
elseif (APPLE)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_DARWIN_C_SOURCE -D__DARWIN_C_LEVEL=__DARWIN_C_FULL")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_DARWIN_C_SOURCE -D__DARWIN_C_LEVEL=__DARWIN_C_FULL")

    if (CMAKE_CROSSCOMPILING)
        message(STATUS "Homebrew is disabled due to cross-compiling")
    else()
        find_program(HOMEBREW_EXECUTABLE brew REQUIRED)
        execute_process(
            COMMAND ${HOMEBREW_EXECUTABLE} --prefix
            OUTPUT_VARIABLE "HOMEBREW_PREFIX"
            ERROR_QUIET
            OUTPUT_STRIP_TRAILING_WHITESPACE
        )
        execute_process(
            COMMAND ${HOMEBREW_EXECUTABLE} --version
            OUTPUT_VARIABLE "HOMEBREW_VERSION"
            ERROR_QUIET
            OUTPUT_STRIP_TRAILING_WHITESPACE
        )
        if (HOMEBREW_VERSION MATCHES "^Homebrew[ \t]+")
            string(REGEX MATCH "^Homebrew[ \t]+[^\n]+" HOMEBREW_VERSION ${HOMEBREW_VERSION})
            string(REGEX REPLACE "^Homebrew[ \t]+" "" HOMEBREW_VERSION ${HOMEBREW_VERSION})
        else()
            set(HOMEBREW_VERSION "unknown")
        endif()
        if (EXISTS ${HOMEBREW_PREFIX})
            message(STATUS "Found Homebrew: ${HOMEBREW_EXECUTABLE} (version ${HOMEBREW_VERSION})")
        else()
            message(WARNING "Cannot find Homebrew")
        endif()
        list(APPEND CMAKE_SYSTEM_PREFIX_PATH ${HOMEBREW_PREFIX})
    endif()
elseif (WIN32)
    # force struct stat to use 64-bit time_t (to match Rust's libc crate)
    add_compile_definitions(__MINGW_USE_VC2005_COMPAT)

    # handled in CMakeLists.stub.txt
elseif (CYGWIN)
    add_compile_definitions(__USE_LINUX_IOCTL_DEFS)
elseif (EMSCRIPTEN)
    # exists in musl but not in rust libc crate
    list(APPEND RUSTFLAGS --cfg mbb_stubs_SYS_dup3)
else()
    message(WARNING "
        New platform: ${CMAKE_SYSTEM_NAME}

        You can file an Issue about this platform at https://github.com/ookiineko/magiskboot_build/issues if the build fails")
endif()

include(CheckSymbolExists)
check_symbol_exists(_GNU_SOURCE "features.h" HAVE__GNU_SOURCE)
if(NOT HAVE__GNU_SOURCE)
    add_compile_definitions(_GNU_SOURCE)
    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_GNU_SOURCE")
endif()

add_compile_definitions(_FILE_OFFSET_BITS=64 _LARGEFILE64_SOURCE)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE")

list(APPEND CMAKE_REQUIRED_INCLUDES "sys/types.h")
include(CheckTypeSize)
check_type_size(off64_t SIZEOF_off64_t)
if(NOT HAVE_off64_t)
    add_compile_definitions(off64_t=off_t)
endif()

include(CheckSymbolExists)
check_symbol_exists(lseek64 "unistd.h" LSEEK64_EXISTS)
if(NOT LSEEK64_EXISTS)
    add_compile_definitions(lseek64=lseek)

    list(APPEND RUSTFLAGS --cfg mbb_stubs_lseek64)
endif()

check_symbol_exists(lseek64 "unistd.h" FTRUNCATE64_EXISTS)
if(NOT FTRUNCATE64_EXISTS)
    add_compile_definitions(ftruncate64=ftruncate)
endif()

check_symbol_exists(O_PATH "fcntl.h" HAVE_O_PATH)
if(NOT HAVE_O_PATH)
    list(APPEND RUSTFLAGS --cfg mbb_stubs_O_PATH)
endif()

check_symbol_exists(SYS_dup3 "sys/syscall.h" HAVE_SYS_dup3)
if(NOT HAVE_SYS_dup3)
    list(APPEND RUSTFLAGS --cfg mbb_stubs_SYS_dup3)
endif()

if (CMAKE_SYSTEM_NAME MATCHES "Android")
    message(STATUS "Fortify enabled")
    add_compile_options(-D_FORTIFY_SOURCE=2)
else()
    message(STATUS "Fortify disabled")
    # Couldn't bypass fortify, so disable it
    # see also: include-android/fortify_stub.h
    add_compile_options(-U_FORTIFY_SOURCE)

    include(CMakeLists.android.txt)
endif()

check_symbol_exists(sendfile "sys/sendfile.h" HAVE_sendfile)
if (NOT HAVE_sendfile)
    list(APPEND RUSTFLAGS --cfg mbb_stubs_sendfile)
endif()

check_symbol_exists(__errno "errno.h" HAVE___errno)
if(NOT HAVE___errno)
    list(APPEND RUSTFLAGS --cfg mbb_stubs___errno)
endif()