lwip之ucosii移植报错集锦

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ucosii版本：2.91

lwip版本：1.3.2

keil版本：4.21.00

移植后发现如下报错信息：

1. ..\USER\lwip-1.3.2\lwip-1.3.2\src\include\lwip/arch.h(85): warning: #47-D: incompatible redefinition of macro "ENOMEM" (declared at line 121 of "C:\Keil\ARM\RV31\INC\errno.h")

2...\USER\lwip-1.3.2\lwip-1.3.2\src\include\lwip/arch.h(95): warning: #47-D: incompatible redefinition of macro "EINVAL" (declared at line 120 of "C:\Keil\ARM\RV31\INC\errno.h")

3...\USER\lwip-1.3.2\lwip-1.3.2\src\include\lwip/arch.h(106): warning: #47-D: incompatible redefinition of macro "EDOM" (declared at line 76 of "C:\Keil\ARM\RV31\INC\errno.h")

4...\USER\lwip-1.3.2\lwip-1.3.2\src\include\lwip/arch.h(107): warning: #47-D: incompatible redefinition of macro "ERANGE" (declared at line 87 of "C:\Keil\ARM\RV31\INC\errno.h")

5...\USER\lwip-1.3.2\lwip-1.3.2\src\include\lwip/arch.h(159): warning: #47-D: incompatible redefinition of macro "EILSEQ" (declared at line 100 of "C:\Keil\ARM\RV31\INC\errno.h")

经检查是安装的keil中，ENOMEM、EINVAL、EDOM、ERANGE、EILSEQ的宏定义与keil自带的宏定义重复，则只要将lwip中的arch头文件的冲定义部分注释掉即可。