求助：debian/rules clean 失败于未知退出代码 -1，该如何解决？谢谢！

[白鳍豚]

sudo dpkg-buildpackage
dpkg-buildpackage: set CFLAGS to default value: -g -O2
dpkg-buildpackage: set CPPFLAGS to default value:
dpkg-buildpackage: set LDFLAGS to default value: -Wl,-Bsymbolic-functions
dpkg-buildpackage: set FFLAGS to default value: -g -O2
dpkg-buildpackage: set CXXFLAGS to default value: -g -O2
dpkg-buildpackage: 源码包 sunpinyin
dpkg-buildpackage: 源码版本 1.0~hg20090201-1
dpkg-buildpackage: 源码修改者 Kov Chai <tchaikov@gmail.com>
dpkg-buildpackage: 主机架构 i386
debian/rules clean
Can't exec "debian/rules": Permission denied at /usr/bin/dpkg-buildpackage line 510.
dpkg-buildpackage: 失败: debian/rules clean 失败于未知退出代码 -1

[revlaay]

chmod 755 debian/rules

[白鳍豚]

谢谢！
下回再试，那几个包已经被咔嚓了