分类： 嵌入式
2012-08-13 09:14:16
Busybox Settings ---> //busybox设置选项
General Configuration ---> //通用设置
/*桌面系统全配置，嵌入式系统不需要*/
[ ] Enable options for full-blown desktop systems
[ ] Provide compatible behavior for rare corner cases (bigger code) (NEW)
/*兼容SUSv2以后命令*/
[*] Enable obsolete features removed before SUSv3 (NEW)
/*如果不适用GCC编译需要选择，用GCC不需要*/
[ ] Avoid using GCC-specific code constructs (NEW)
--- Enable Linux-specific applets and features
/*缓冲区分配政策（适用malloc分配）*/
Buffer allocation policy (Allocate with Malloc) --->
/*显示简短的帮助信息，如果不想显示，可以节省7K空间*/
[*] Show applet usage messages (NEW)
/*显示详细的帮助信息，增加13K*/
[*] Show verbose applet usage messages (NEW)
/*运行
[*] Store applet usage messages in compressed form (NEW)
/*支持—install [-s]命令，该选项允许在busybox运行时动态创建链接*/
[*] Support --install [-s] to install applet links at runtime (NEW)
/*不使用/usr，当make install时，所有程序安装在/bin和/sbin下，而不安装在/usr/bin和/usr/sbin下*/
[ ] Don't use /usr (NEW)
/*支持系统语言环境，需要系统支持*/
[ ] Enable locale support (system needs locale for this to work) (NEW)
/*支持unicode编码*/
[*] Support Unicode (NEW)
/*选中当LANG变量值为“XXXX.utf8时生效，否则总是生效”*/
[ ] Check $LANG environment variable (NEW)
/*典型值63，表示一切输入输出设备*/
(63) Character code to substitute unprintable characters with (NEW)
/*不支持拉丁文*/
(767) Range of supported Unicode characters (NEW)
/*如果不选，0长度的unicode字符编码不显示*/
[ ] Allow zero-width Unicode characters on output (NEW)
/*如果不选，大于1长度的unicode字符编码不显示*/
[ ] Allow wide Unicode characters on output (NEW)
/**/
[ ] Bidirectional character-aware line input (NEW)
/**/
[ ] Make it possible to enter sequences of chars which are not Unicode (NEW)
/*允许使用GUN的长参数*/
[*] Support for --long-options (NEW)
/*需要devpts挂载上*/
[*] Use the devpts filesystem for Unix98 PTYs (NEW)
/*除非你有一个好的原因，否则不要使能*/
[ ] Clean up all memory before exiting (usually not needed) (NEW)
/*使用 /var/run/utmp追踪哪个用户处于登陆状态，程序在这设置和删除接入点*/
[*] Support utmp file (NEW)
/*程序将在/var/run/wtmp文件附加新接入点*/
[*] Support wtmp file (NEW)
/*支持一些程序写pid文件*/
[*] Support writing pidfiles (NEW)
/*设置busybox的二进制程序给予root权限*/
[*] Support for SUID/SGID handling (NEW)
/*通过检查/etc/busybox.conf文件来确定SUID/SGID的状态（笨方法）*/
[*] Runtime SUID/SGID configuration via /etc/busybox.conf (NEW)
/*选中避免没有权限的警告*/
[*] Suppress warning message if /etc/busybox.conf is not readable (NEW)
/*启用SELinux支持LS，PS和ID指令。还提供了SELinux中的applet编译选项。*/
[ ] Support NSA Security Enhanced Linux (NEW)
/*试验性选项，制定busybox运行的程序，及时没有连接到busybox，可能引起一些问题*/
[ ] exec prefers applets (NEW)
(/proc/self/exe) Path to BusyBox executable (NEW)
Build Options ---> //编译选项
/*静态编译，不需要动态库，会使编译的文件变大很多*/
[ ] Build BusyBox as a static binary (no shared libs) (NEW)
/*几乎没人使用*/
[ ] Build BusyBox as a position independent executable (NEW)
/*支持无MMU版本*/
[ ] Force NOMMU build (NEW)
/*建立一个包含素有busybox代码的库libbusybox.so.N.N.N*/
[ ] Build shared libbusybox (NEW)
/*如果想支持2GB的大文件选上，否则不选，选择需要库支持*/
[*] Build with Large File Support (for accessing files > 2 GB) (NEW)
/*交叉编译器路径，例：arm-linux-*/
() Cross Compiler prefix (NEW)
/*用于指定交叉编译时的/usr/lib和usr/include路径，本地留空*/
() Path to sysroot (NEW)
/*传给编译器的CFLAGS*/
() Additional CFLAGS (NEW)
/*传给连接器的LDFLAGS*/
() Additional LDFLAGS (NEW)
/*通过-l传给连接器的LDLIB*/
() Additional LDLIBS (NEW)
Debugging Options ---> //调试选项
[ ] Build BusyBox with extra Debugging symbols (NEW) //开发时调试用
[ ] Abort compilation on any warning (NEW) //向GCC增加-Werror选项
Additional debugging library (None) ---> //调试用的库
(X) None
( ) Dmalloc
( ) Electric-fence
Installation Options ("make install" behavior) ---> //安装选项
What kind of applet links to install (as soft-links) ---> //链接类型，一般选软链接
(X) as soft-links
( ) as hard-links
( ) as script wrappers
( ) not installed
/*make install时生成文件的位置。默认当前目录下的_install*/
(./_install) BusyBox installation prefix (NEW)
Busybox Library Tuning ---> //库微调
/*使能systemd控制busybox的守护进程，能减少代码*/
[*] Enable systemd support (NEW)
/*支持kill，killall中RTMIN和RTMAX信号名称，占250字节*/
[*] Support RTMIN[+n] and RTMAX[-n] signal names (NEW)
/*最小密码长度*/
(6) Minimum password length (NEW)
/*运行MD5SUM算法的速度*/
(1) MD5: Trade bytes for speed (0:fast, 3:slow) (NEW)
/*使上层执行速度快20%或减少20%CPU消耗，但代码稍大*/
[*] Faster /proc scanning code (+100 bytes) (NEW)
/*启用/etc/networks中网络名称，很少使用*/
[ ] Support for /etc/networks (NEW)
/*允许通过一些命令确定窗口大小，要使用*/
[*] Use termios to manipulate the screen (NEW)
/*命令行模式，主要用于shell*/
[*] Command line editing (NEW)
/*命令行在堆栈缓冲区的大小*/
(1024) Maximum length of input (NEW)
/*启用VI风格的命令行*/
[ ] vi-style line editing commands (NEW)
/*制定命令历史记录，0为禁止*/
(255) History size (NEW)
/*保存shell模式下的历史*/
[*] History saving (NEW)
/*言如其义*/
[ ] Save history on shell exit, not after every command (NEW)
/*启用历史搜索，增加0.5K代码*/
[*] Reverse history search (NEW)
/*使用TAB补全，很好用*/
[*] Tab completion (NEW)
/*使能用户名补全*/
[ ] Username completion (NEW)
/*允许使用转移字符提示*/
[*] Fancy shell prompts (NEW)
/*使能显示光标位置，关闭可节省代码空间*/
[ ] Query cursor position from terminal (NEW)
/*使用此选项，当使用CP命令复制符号链接时将符号链接复制成普通文件*/
[*] Non-POSIX, but safer, copying to special nodes (NEW)
/*使能一些CP错误信息，增加60字节*/
[ ] Give more precise messages when copy fails (cp, mv etc) (NEW)
/*一些命令使用的缓冲区大小*/
(4) Copy buffer size, in kilobytes (NEW)
/**/
[*] Skip rootfs in mount table (NEW)
/*使用clock_gettime(CLOCK_MONOTONIC) 系统调用，一些命令会用到准确时间，不使用可能引发错误*/
[ ] Use clock_gettime(CLOCK_MONOTONIC) syscall (NEW)
/*使用名称显示错误而不是十六进制数，不选择节省1400字节空间*/
[*] Use ioctl names rather than hex values in error messages (NEW)
/*支持在网络中打印infiniband地址*/
[*] Support infiniband HW (NEW)
