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131 lines
5.3 KiB
131 lines
5.3 KiB
3 years ago
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# setup environment for cross compile to arm-linux
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if (DEFINED CMAKE_TOOLCHAIN_FILE)
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else()
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message(WARNING
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" *********************************************************\n"
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" * CMAKE_TOOLCHAIN_FILE not defined *\n"
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" * This is correct for compiling on the Raspberry Pi *\n"
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" * *\n"
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" * If you are cross-compiling on some other machine *\n"
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" * then DELETE the build directory and re-run with: *\n"
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" * -DCMAKE_TOOLCHAIN_FILE=toolchain_file.cmake *\n"
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" * *\n"
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" * Toolchain files are in makefiles/cmake/toolchains. *\n"
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" *********************************************************"
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)
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endif()
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# pull in headers for android
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if(ANDROID)
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#
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# work out where android headers and library are
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#
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set(ANDROID_NDK_ROOT $ENV{ANDROID_NDK_ROOT} CACHE INTERNAL "" FORCE)
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set(ANDROID_LIBS $ENV{ANDROID_LIBS} CACHE INTERNAL "" FORCE)
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set(ANDROID_BIONIC $ENV{ANDROID_BIONIC} CACHE INTERNAL "" FORCE)
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set(ANDROID_LDSCRIPTS $ENV{ANDROID_LDSCRIPTS} CACHE INTERNAL "" FORCE)
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if("${ANDROID_NDK_ROOT}" STREQUAL "")
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find_program(ANDROID_COMPILER arm-eabi-gcc)
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get_filename_component(ANDROID_BIN ${ANDROID_COMPILER} PATH CACHE)
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find_path(_ANDROID_ROOT Makefile PATHS ${ANDROID_BIN}
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PATH_SUFFIXES ../../../../..
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NO_DEFAULT_PATH)
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if("${_ANDROID_ROOT}" STREQUAL "_ANDROID_ROOT-NOTFOUND")
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set(_ANDROID_ROOT "" CACHE INTERNAL "" FORCE)
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endif()
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if("${_ANDROID_ROOT}" STREQUAL "")
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message(FATAL_ERROR "Cannot find android root directory")
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endif()
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get_filename_component(ANDROID_ROOT ${_ANDROID_ROOT} ABSOLUTE CACHE)
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#
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# top level of cross-compiler target include and lib directory structure
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#
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set(ANDROID_NDK_ROOT
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"${ANDROID_ROOT}/prebuilt/ndk" CACHE INTERNAL "" FORCE)
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set(ANDROID_BIONIC
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"${ANDROID_ROOT}/bionic" CACHE INTERNAL "" FORCE)
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set(ANDROID_LDSCRIPTS
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"${ANDROID_ROOT}/build/core" CACHE INTERNAL "" FORCE)
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set(ANDROID_LIBS
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"${ANDROID_ROOT}/out/target/product/${ANDROID_PRODUCT}/obj/lib"
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CACHE INTERNAL "" FORCE)
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endif()
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if("${ANDROID_NDK_ROOT}" STREQUAL "")
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message(FATAL_ERROR "Cannot find Android NDK root directory")
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endif()
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if("${ANDROID_BIONIC}" STREQUAL "")
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message(FATAL_ERROR "Cannot find Android BIONIC directory")
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endif()
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if("${ANDROID_LDSCRIPTS}" STREQUAL "")
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message(FATAL_ERROR "Cannot find Android LD scripts directory")
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endif()
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set(CMAKE_SYSTEM_PREFIX_PATH "${ANDROID_NDK_ROOT}/android-ndk-r${ANDROID_NDK_RELEASE}/platforms/android-${ANDROID_NDK_PLATFORM}/arch-${CMAKE_SYSTEM_PROCESSOR}/usr")
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if("${ANDROID_LIBS}" STREQUAL "")
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set(ANDROID_LIBS "${CMAKE_SYSTEM_PREFIX_PATH}/lib"
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CACHE INTERNAL "" FORCE)
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# message(FATAL_ERROR "Cannot find android libraries")
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endif()
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#
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# add include directories for pthreads
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#
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include_directories("${CMAKE_SYSTEM_PREFIX_PATH}/include" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libc/include" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libc/include/arch-arm/include" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libc/kernel/arch-arm" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libc/kernel/common" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libm/include" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libm/include/arch/arm" BEFORE SYSTEM)
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include_directories("${ANDROID_BIONIC}/libstdc++/include" BEFORE SYSTEM)
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#
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# Pull in Android link options manually
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#
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set(ANDROID_CRTBEGIN "${ANDROID_LIBS}/crtbegin_dynamic.o")
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set(ANDROID_CRTEND "${ANDROID_LIBS}/crtend_android.o")
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set(CMAKE_SHARED_LINKER_FLAGS "-nostdlib ${ANDROID_CRTBEGIN} -Wl,-Bdynamic -Wl,-T${ANDROID_LDSCRIPTS}/armelf.x")
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link_directories(${ANDROID_LIBS})
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set(CMAKE_EXE_LINKER_FLAGS "-nostdlib ${ANDROID_CRTBEGIN} -nostdlib -Wl,-z,noexecstack")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-dynamic-linker,/system/bin/linker -Wl,-rpath,${CMAKE_INSTALL_PREFIX}/lib")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-T${ANDROID_LDSCRIPTS}/armelf.x -Wl,--gc-sections")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,nocopyreloc -Wl,-z,noexecstack -Wl,--fix-cortex-a8 -Wl,--no-undefined")
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set(CMAKE_C_STANDARD_LIBRARIES "-llog -lc -lgcc ${ANDROID_CRTEND}" CACHE INTERNAL "" FORCE)
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set(SHARED "")
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else()
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set(SHARED "SHARED")
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endif()
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# All linux systems have sbrk()
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add_definitions(-D_HAVE_SBRK)
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# pull in declarations of lseek64 and friends
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add_definitions(-D_LARGEFILE64_SOURCE)
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# test for glibc malloc debugging extensions
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try_compile(HAVE_MTRACE
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${CMAKE_BINARY_DIR}
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${PROJECT_SOURCE_DIR}/makefiles/cmake/srcs/test-mtrace.c
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OUTPUT_VARIABLE foo)
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# test for existence of execinfo.h header
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include(CheckIncludeFile)
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check_include_file(execinfo.h HAVE_EXECINFO_H)
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add_definitions(-DHAVE_CMAKE_CONFIG)
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configure_file (
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"makefiles/cmake/cmake_config.h.in"
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"${PROJECT_BINARY_DIR}/cmake_config.h"
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)
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