瑞萨SDK编译linux时，make menuconfig报错

问题复现

系统：ubuntu22.04

shell 复制代码

source environment-setup-aarch64-poky-linux
make distclean
make defconfig
make menuconfig

错误信息

shell 复制代码

make menuconfig
  UPD     scripts/kconfig/mconf-cfg
  HOSTCC  scripts/kconfig/mconf.o
  HOSTCC  scripts/kconfig/lxdialog/checklist.o
  HOSTCC  scripts/kconfig/lxdialog/inputbox.o
  HOSTCC  scripts/kconfig/lxdialog/menubox.o
  HOSTCC  scripts/kconfig/lxdialog/textbox.o
  HOSTCC  scripts/kconfig/lxdialog/util.o
  HOSTCC  scripts/kconfig/lxdialog/yesno.o
  HOSTLD  scripts/kconfig/mconf
/usr/bin/ld: cannot find libncursesw.so.5: No such file or directory
/usr/bin/ld: skipping incompatible /home/donnel/work/pdu/toolchain/sysroots/aarch64-poky-linux/usr/lib64/libtinfo.so when searching for -ltinfo
/usr/bin/ld: skipping incompatible /home/donnel/work/pdu/toolchain/sysroots/aarch64-poky-linux/usr/lib64/libtinfo.so when searching for -ltinfo
collect2: error: ld returned 1 exit status
make[1]: *** [scripts/Makefile.host:104: scripts/kconfig/mconf] Error 1
make: *** [Makefile:615: menuconfig] Error 2

根据错误信息我又按照了libncursesw.so.5

shell 复制代码

sudo apt install  libncursesw5

make menuconfig
  UPD     scripts/kconfig/mconf-cfg
  HOSTCC  scripts/kconfig/mconf.o
  HOSTCC  scripts/kconfig/lxdialog/checklist.o
  HOSTCC  scripts/kconfig/lxdialog/inputbox.o
  HOSTCC  scripts/kconfig/lxdialog/menubox.o
  HOSTCC  scripts/kconfig/lxdialog/textbox.o
  HOSTCC  scripts/kconfig/lxdialog/util.o
  HOSTCC  scripts/kconfig/lxdialog/yesno.o
  HOSTLD  scripts/kconfig/mconf
/usr/bin/ld: skipping incompatible /home/donnel/work/pdu/toolchain/sysroots/aarch64-poky-linux/usr/lib64/libtinfo.so when searching for -ltinfo
/usr/bin/ld: skipping incompatible /home/donnel/work/pdu/toolchain/sysroots/aarch64-poky-linux/usr/lib64/libtinfo.so when searching for -ltinfo
/usr/bin/ld: skipping incompatible /home/donnel/work/pdu/toolchain/sysroots/aarch64-poky-linux/usr/lib64/libc.so when searching for -lc
/usr/bin/ld: skipping incompatible /home/donnel/work/pdu/toolchain/sysroots/aarch64-poky-linux/usr/lib64/libc.a when searching for -lc
/usr/bin/ld: warning: libtinfo.so.5, needed by /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/libncursesw.so.5, may conflict with libtinfo.so.6
Your display is too small to run Menuconfig!
It must be at least 19 lines by 80 columns.
make[1]: *** [scripts/kconfig/Makefile:29: menuconfig] Error 1
make: *** [Makefile:615: menuconfig] Error 2

还是报错，报错屏幕太小，我开始检查终端尺寸。

shell 复制代码

 stty  size
46 149

明显符合要求，但还是报错。

根据错误信息开始排查源码，最终定位到 scripts/kconfig/lxdialog/util.c。

该文件有以下函数，我增加调试信息。

c 复制代码

/*
 * Do some initialization for dialog
 */
int init_dialog(const char *backtitle)
{
        int height, width;

        initscr();              /* Init curses */

        /* Get current cursor position for signal handler in mconf.c */
        getyx(stdscr, saved_y, saved_x);

        getmaxyx(stdscr, height, width);
        printf("h:%d w:%d\n", height, width);   //调试代码
        if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
                endwin();
                printf("error\n");  //调试代码
                return -ERRDISPLAYTOOSMALL;
        }

        dlg.backtitle = backtitle;
        color_setup(getenv("MENUCONFIG_COLOR"));

        keypad(stdscr, TRUE);
        cbreak();
        noecho();
        dialog_clear();

        return 0;
}

再次运行。

shell 复制代码

make menuconfig
h:-1 w:-1
error
Your display is too small to run Menuconfig!
It must be at least 19 lines by 80 columns.
make[1]: *** [scripts/kconfig/Makefile:29: menuconfig] Error 1
make: *** [Makefile:615: menuconfig] Error 2

返回的都是-1，开始怀疑库的兼容性。

shell 复制代码

ldd scripts/kconfig/mconf
        linux-vdso.so.1 (0x00007ffc19bb7000)
        libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 (0x00007511d23a5000)
        libtinfo.so.6 => /lib/x86_64-linux-gnu/libtinfo.so.6 (0x00007511d2373000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007511d2000000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007511d2343000)
        /lib64/ld-linux-x86-64.so.2 (0x00007511d242e000)

最终发现libncursesw5和libncursesw6混用了，导致不兼容。

为什么会出现这种情况，和执行了source environment-setup-aarch64-poky-linux有关，里面的环境变量污染host。

解决方法

产生这个问题的原因是environment-setup-aarch64-poky-linux污染了环境变量把sysroot改为了sysroots/aarch64-poky-linux，导致host端 ld时出错，所以需要在执行make menuconfig前临时清除被污染的环境变量。

执行以下命令即可。

shell 复制代码

PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/share/pkgconfig PKG_CONFIG_SYSROOT_DIR= PKG_CONFIG_LIBDIR= make menuconfig

瑞萨SDK编译linux时，make menuconfig报错

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