automake-如何更改已安装二进制文件的权限

我有这个Makefile.am:

AUTOMAKE_OPTIONS = subdir-objects
sbin_PROGRAMS = foo
foo_SOURCES = foo.c

install-exec-hook:
    chmod +s $(sbindir)/foo

除了目标,一切都很好 蒸馏检查 这给出了该误差:

> make distcheck
...
...
...
Making install in sub-module
make[2]: Entering directory '/home/users/a/myproj/_build/sub-module'
make[3]: Entering directory '/home/users/a/myproj/_build/sub-module'
 ../../install-sh -c -d '/var/folders/pp/jbr_vq091s7gd8x9scrc7drw0000gn/T//am-dc-71151//home/users/a/myproj/_inst/sbin'
    /bin/sh ../libtool   --mode=install /usr/bin/install -c foo '/var/folders/pp/jbr_vq091s7gd8x9scrc7drw0000gn/T//am-dc-71151//home/users/a/myproj/_inst/sbin'
libtool: install: /usr/bin/install -c foo /var/folders/pp/jbr_vq091s7gd8x9scrc7drw0000gn/T//am-dc-71151//home/users/a/myproj/_inst/sbin/foo
make  install-exec-hook
make[4]: Entering directory '/home/users/a/myproj/_build/sub-module'
chmod +s /home/users/a/myproj/_inst/sbin/foo
chmod: /home/users/a/myproj/_inst/sbin/foo: No such file or directory
Makefile:645: recipe for target 'install-exec-hook' failed
make[4]: *** [install-exec-hook] Error 1

看起来像 食品 二进制文件被复制到某个临时目录(/var/folders/pp/jbr_vq091s7gd8x9crc7drw0000gn/T//am-dc-7111//home/users/a/myproj/_inst/sbin),而不是复制到安装exec挂钩目标(/home/user/a/myproj/_inst/sbin)中查看的位置

我错过了什么??