NIOS Eclipse突然报错：No rule to make target `/system.h

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NIOS Eclipse突然报错：No rule to make target `/system.h

今天打开NIOS Eclipse编译昨天完好的工程，发现报错。我就纳闷了，代码没有修改，编译结果报错

控制台中problems选线中显示：

No rule to make target `/system.h

控制台中的console选项中显示：

**** Build of configuration Nios II for project NIOS ****make -j all 
Info: Building ../NIOS_Bsp
make --no-print-directory -C ../NIOS_Bsp1 [main] ? (13740) D:\MyApp\quartus10_1\quartus\bin\cygwin\bin\cygpath.exe: *** fatal error - cygheap base mismatch detected - 0x2AD5530/0x611B5530.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.1 [main] ? (12684) D:\MyApp\quartus10_1\quartus\bin\cygwin\bin\cygpath.exe: *** fatal error - cygheap base mismatch detected - 0x2AD5530/0x611B5530.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.1 [main] ? (10320) D:\MyApp\quartus10_1\quartus\bin\cygwin\bin\cygpath.exe: *** fatal error - cygheap base mismatch detected - 0x2AD5530/0x611B5530.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.1 [main] ? (20784) D:\MyApp\quartus10_1\quartus\bin\cygwin\bin\cygpath.exe: *** fatal error - cygheap base mismatch detected - 0x2AD5530/0x611B5530.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.1 [main] ? (16988) D:\MyApp\quartus10_1\quartus\bin\cygwin\bin\cygpath.exe: *** fatal error - cygheap base mismatch detected - 0x2AD5530/0x611B5530.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.1 [main] ? (9428) D:\MyApp\quartus10_1\quartus\bin\cygwin\bin\cygpath.exe: *** fatal error - cygheap base mismatch detected - 0x2AD5530/0x611B5530.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.
make[1]: *** No rule to make target `/system.h', needed by `all'.  Stop.
make: *** [../NIOS_Bsp-recurs-make-lib] Error 2

解决方法：

1、运行三次D:\MyApp\quartus10_1\quartus\bin\cygwin\Cygwin.bat
2、再运行三次D:\MyApp\quartus10_1\quartus\bin64\cygwin\Cygwin.bat
3、重启电脑，重启NIOS Eclipse，重新编译工程，没有报错。记住要重启电脑。

参考：NIOS II Eclipse出现fatal error - cygheap base mismatch detected-CSDN博客