/include/sys/types.h:151: error: duplicate 'unsigned' uint,ulong和ushort自定义和工具链报冲突的规避方法

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报错如下：

/opt/compiler/glibc-oabi-toolchain-arm-generic/arm-unknown-linux-gnu//sys-root/usr/include/sys/types.h:151: error: duplicate 'unsigned'

/opt/compiler/glibc-oabi-toolchain-arm-generic/arm-unknown-linux-gnu//sys-root/usr/include/sys/types.h:152: error: duplicate 'unsigned'
/opt/compiler/glibc-oabi-toolchain-arm-generic/arm-unknown-linux-gnu//sys-root/usr/include/sys/types.h:152: error: duplicate 'short'
/opt/compiler/glibc-oabi-toolchain-arm-generic/arm-unknown-linux-gnu//sys-root/usr/include/sys/types.h:153: error: duplicate 'unsigned'

/opt/compiler/glibc-oabi-toolchain-arm-generic/arm-unknown-linux-gnu//sys-root/usr/include/sys/types.h:153: error: two or more data types in declaration specifiers

总算找到根本原因了：

#include<sys/types.h>

头文件包含这个啦，这个你去掉就可以了，不去掉就用下面的规避方式就可以解决。

规避方法一：

/*屏蔽掉和工具链里面的重复定义，因为工具链中默认让宏定义__USE_MISC生效*/
#ifndef __USE_MISC

#ifndef uint
#define uint unsigned int
#endif

#ifndef ulong
#define ulong unsigned long
#endif

#ifndef ushort
#define ushort unsigned short
#endif

#endif

规避方法二：直接屏蔽掉

#ifdef __USE_MISC
/* Old compatibility names for C types. */
//typedef unsigned long int ulong;
//typedef unsigned short int ushort;
//typedef unsigned int uint;
#endif

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