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Re: common idiom for user definable substitution variables and defaults
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From: |
John Calcote |
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Subject: |
Re: common idiom for user definable substitution variables and defaults |
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Date: |
Fri, 16 May 2008 15:07:45 -0600 |
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User-agent: |
Thunderbird 2.0.0.12 (X11/20080226) |
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Peter Michaux wrote:
> AC_SUBST(XJS_LOAD_PATH)
> if [[ -z "${XJS_LOAD_PATH}" ]]
> then
> XJS_LOAD_PATH=".:~/lib/xjs:/usr/local/lib/xjs:/usr/lib/xjs:/lib/xjs"
> fi
>
> I have a feeling this might not be the normal way to do this.
>
> For one thing, the double brackets are just single brackets in my
> configure file. That is ok but how to quote brackets? Do I just want
> four brackets on each side?
You could just use "test":
test -z "${XJS_LOADPATH}" && XJS_LOAD_PATH="..."
AC_SUBST(XJS_LOAD_PATH)
Regards,
John
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