#过年不停更# OpenHarmony 网络-通过第三方库实现IP自动配置(L2) 原创

  import("//build/ohos.gni") # L2的分支

  ohos_executable("toybox") {
	...
	"toys/pending/dhcp.c", # dhcp 添加到toybox编译中去
	...
  }
  ...
  symlink_target_name = [
	...
	"dhcp", # 添加dhcp到toybox的链接
	...
  ]
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// 修改前
#define CFG_DHCP 0
#define USE_DHCP(...)
// 修改后
#define CFG_DHCP 1
#define USE_DHCP(...) __VA_ARGS__
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// 修改前
#ifndef TT
#define TT this.dhcp
#endif
#define FLAG_f (FORCED_FLAG<<0)
#define FLAG_b (FORCED_FLAG<<1)
#define FLAG_n (FORCED_FLAG<<2)
#define FLAG_q (FORCED_FLAG<<3)
#define FLAG_v (FORCED_FLAG<<4)
#define FLAG_o (FORCED_FLAG<<5)
#define FLAG_a (FORCED_FLAG<<6)
#define FLAG_C (FORCED_FLAG<<7)
#define FLAG_R (FORCED_FLAG<<8)
#define FLAG_B (FORCED_FLAG<<9)
#define FLAG_S (FORCED_FLAG<<10)
#define FLAG_i (FORCED_FLAG<<11)
#define FLAG_p (FORCED_FLAG<<12)
#define FLAG_s (FORCED_FLAG<<13)
#define FLAG_t (FORCED_FLAG<<14)
#define FLAG_T (FORCED_FLAG<<15)
#define FLAG_A (FORCED_FLAG<<16)
#define FLAG_O (FORCED_FLAG<<17)
#define FLAG_r (FORCED_FLAG<<18)
#define FLAG_x (FORCED_FLAG<<19)
#define FLAG_F (FORCED_FLAG<<20)
#define FLAG_H (FORCED_FLAG<<21)
#define FLAG_V (FORCED_FLAG<<22)
#endif

// 修改后
#ifndef TT
#define TT this.dhcp
#endif
#define FLAG_f (1<<0)
#define FLAG_b (1<<1)
#define FLAG_n (1<<2)
#define FLAG_q (1<<3)
#define FLAG_v (1<<4)
#define FLAG_o (1<<5)
#define FLAG_a (1<<6)
#define FLAG_C (1<<7)
#define FLAG_R (1<<8)
#define FLAG_B (1<<9)
#define FLAG_S (1<<10)
#define FLAG_i (1<<11)
#define FLAG_p (1<<12)
#define FLAG_s (1<<13)
#define FLAG_t (1<<14)
#define FLAG_T (1<<15)
#define FLAG_A (1<<16)
#define FLAG_O (1<<17)
#define FLAG_r (1<<18)
#define FLAG_x (1<<19)
#define FLAG_F (1<<20)
#define FLAG_H (1<<21)
#define FLAG_V (1<<22)
#endif
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./build.sh --product-name Hi3516DV300 --ccache
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mount -o remount,rw /
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hdc_std.exe file send default.script /system/bin
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chmod 0711 /system/bin/default.script
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ifconfig eth0 up
dhcp -i eth0 -s /system/bin/default.script
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