LINUX高通平台交叉编译地图软件PROJ

• 准备工作

LINUX编译地图软件PROJ-CSDN博客

• toolchain脚本

  set(CMAKE_SYSTEM_NAME Linux)
  set(CMAKE_SYSTEM_PROCESSOR aarch64)

  高通OE交叉编译器前缀

  set(TOOLCHAIN_PREFIX "aarch64-oe-linux-")
  set(CMAKE_C_COMPILER {TOOLCHAIN_PREFIX}gcc) set(CMAKE_CXX_COMPILER {TOOLCHAIN_PREFIX}g++)
  set(CMAKE_AR {TOOLCHAIN_PREFIX}ar) set(CMAKE_RANLIB {TOOLCHAIN_PREFIX}ranlib)
  set(CMAKE_LIBRARY_ARCHIVER ${TOOLCHAIN_PREFIX}ar)

  Sysroot路径

  set(TOOLCHAIN_SYSROOT "/usr/local/x86-aarch64-toolchain/sysroots/aarch64-oe-linux")
  set(CMAKE_SYSROOT ${TOOLCHAIN_SYSROOT})

  交叉查找规则

  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

  编译flag适配高通AArch64

  set(CMAKE_C_FLAGS "-march=armv8-a -O2 -Os")
  set(CMAKE_CXX_FLAGS "-march=armv8-a -O2 -Os -include limits")

• 编译脚本

  SOURCE_ROOT_PATH=pwd

  TOOLCHAIN_PATH=/usr/local/x86-aarch64-toolchain
  CROSS_NAME=aarch64-oe-linux
  CROSS_BIN={TOOLCHAIN_PATH}/sysroots/x86_64-qtisdk-linux/usr/bin/{CROSS_NAME}
  export PATH={CROSS_BIN}:{PATH}

  . {TOOLCHAIN_PATH}/environment-setup-aarch64-oe-linux . {TOOLCHAIN_PATH}/environment-setup-aarch64-oe-linux-sdllvm

  配置全局变量

  TOOLCHAIN_FILE="{SOURCE_ROOT_PATH}/aarch64-oe.cmake" SYSROOT="{TOOLCHAIN_PATH}/sysroots/aarch64-oe-linux"

  PROJ_INSTALL_DIR=$HOME/proj_install

  make clean
  rm -rf CMakeCache.txt CMakeFiles
  rm -rf ${PROJ_INSTALL_DIR}

  BUILD_DIR=build
  if [ -d {BUILD_DIR} ]; then rm -rf {BUILD_DIR}
  fi
  mkdir {BUILD_DIR} cd {BUILD_DIR}

  cmake ..
  -DCMAKE_TOOLCHAIN_FILE={TOOLCHAIN_FILE} \ -DCMAKE_INSTALL_PREFIX={PROJ_INSTALL_DIR}
  -DCMAKE_FIND_ROOT_PATH=${SYSROOT}

  make -j$(nproc) # -j 参数可以加速编译
  make install

• 检查编译结果

  $ file libproj.so.25.9.8.1
  libproj.so.25.9.8.1: ELF 64-bit LSB shared object, ARM aarch64, version 1 (GNU/Linux), dynamically linked, BuildID[sha1]=8b831cfdeda88efdcd4bc6f706da272400451831, with debug_info, not stripped