Subject: Re: [sv-ec] System Include Proposal - Version 2
From: Kevin Cameron x3251 (Kevin.Cameron@nsc.com)
Date: Thu Mar 13 2003 - 11:24:34 PST
When I previously spec'd this for AMS I had it that <> meant the search
started in the system directories and ended in the user defined, and
that "" started in the user defined directories and ended in the system
directories - that way it's fairly backward compatible (the compiler
can issue warnings if it thinks something is in the wrong place).
Can we do the same?
Kev.
> From: "Stephen Williams" <steve@icarus.com>
>
> > - I believe if you are introducing a C-like feature, you should
> > follow C-like practice as well. Maybe even extract the description
> > from the C standard?
> >
> > So far I've found 3 different definitions of how this works with GNU,
> > Visual Studio, and SunWSPro. If there was one consistent definition I
> > would agree with this comment whole heartedly, but alas there is not
> > one. I've simplified the proposal so that <> only searches the system
> > include area.
>
> Just to clarify, all 3 C compiler examples you gave will extend the
> <file> search path with a -I flag to the command line compiler. Yes,
> even the MicroSoft command line compiler "cl" takes a "-I" flag. The
> location of the system header files varies with all three, but all
> search the system header directories *last*, after those directories
> added by -I switch.
>
> How does this relate to SystemVerilog and `include? Library vendors
> are presumably going to want to place their header files in a common
> place that is *not* the Cadence/Synopsys/FlyByNight specific place,
> but a library specific place. The library vendor will then want to
> make those header files available to programmers using `include <foo>
> and some vendor specific means to add the library vendor directory
> to the tool search path.
>
> Your wording specifically denies this possibility:
>
> > When the angle bracket ("<>") notation is used, then only the vendor
> > defined location containing files defined by the language standard is
> > searched.
>
> This specifically excludes third-party libraries?
>
> --
> Steve Williams "The woods are lovely, dark and deep.
> steve at icarus.com But I have promises to keep,
> steve at picturel.com and lines to code before I sleep,
> http://www.picturel.com And lines to code before I sleep."
>
>
>
>
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