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bug#17774: AIX and lbracket ([) program - will not install on AIX using

From: Paul Eggert
Subject: bug#17774: AIX and lbracket ([) program - will not install on AIX using installp
Date: Fri, 13 Jun 2014 08:09:26 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

Michael Felt wrote:
But to have a name like that, I must be too old fashioned -
where is the win?

It's so that execlp ("FOO") acts like the shell command FOO, or, more precisely, so that the attached C program works like '[ -d / ]' at the shell level. POSIX requires that all standard utilities (except for a very short list) must work the same way from a C program as from the shell. See the last sentence of:


'[' is not on the list of exceptions, so coreutils arranges for it to be an executable, as POSIX requires.

AIX does not
permit files in an installp package are refused when they include certain
special characters

It may be simpler to just omit '[' from your installp package (I assume that's some downstream thing). I doubt whether anybody but POSIX nerds will care. AIX itself doesn't seem to be POSIX-conforming here, as the attached C program fails on AIX. (If *you* are a POSIX nerd please feel free to file a bug report with IBM....)

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