[Bug c/40624] New: gcc -v does not give useful --prefix on w32

[Bug c/40624] New: gcc -v does not give useful --prefix on w32

[lennart dot borgman at gmail dot com]

This is for gcc on w32 (windows). I have downloaded the MinGW installer and
installed gcc from that.

When doing

  gcc -v

the resulting prefix for me is
On w32 this should include the drive letter otherwise it is totally useless. So
it should be

  --prefix=c:/mingw

I also wonder if this is the way to get the include libraries path or if there
is a better way. Is another way to get it planned?

The background to this bug report can be found here:

  http://lists.gnu.org/archive/html/emacs-devel/2009-07/msg00033.html


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           Summary: gcc -v does not give useful --prefix on w32
           Product: gcc
           Version: 3.4.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lennart dot borgman at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug c/40624] gcc -v does not give useful --prefix on w32

[lennart dot borgman at gmail dot com]

------- Comment #1 from lennart dot borgman at gmail dot com  2009-07-02 18:16 -------
Hm, something went wrong when sending the bug report. It should have said

When doing

  gcc -v

the resulting prefix for me is

  --prefix=/mingw

On w32 ... (the rest is correct)


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lennart dot borgman at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lennart dot borgman at gmail
                   |                            |dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug driver/40624] gcc -v does not give useful --prefix on w32

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2009-07-02 18:27 -------
Since the output of gcc -v depends on how GCC was configured, this is not a bug
with GCC and really a bug with the way mingw's gcc was configured.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
          Component|c                           |driver
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug driver/40624] gcc -v does not give useful --prefix on w32

[lennart dot borgman at gmail dot com]

------- Comment #3 from lennart dot borgman at gmail dot com  2009-07-02 18:29 -------
pinskia, please explain why you marked this bug as invalid!


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lennart dot borgman at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|INVALID                     |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug driver/40624] gcc -v does not give useful --prefix on w32

[lennart dot borgman at gmail dot com]

------- Comment #4 from lennart dot borgman at gmail dot com  2009-07-02 18:31 -------
Ah, sorry, I did not see your comment. Could you advice how the MinGW team
should configure the compilation?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug driver/40624] gcc -v does not give useful --prefix on w32

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2009-07-02 18:32 -------
Because the FSF does not supply the binaries you are using so it is not a bug
with GCC rather than the way it was configured.  when configuring with
--prefix=/mingw, it have to mean C:/mingw.  Also GCC binaries are relocatable
so the whole idea of using it to figure out the include directory is wrong.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug driver/40624] gcc -v does not give useful --prefix on w32

[lennart dot borgman at gmail dot com]

------- Comment #6 from lennart dot borgman at gmail dot com  2009-07-02 18:34 -------
Thanks, I see. How can one then figure out the include path that a user has?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624

[Bug driver/40624] gcc -v does not give useful --prefix on w32

[lennart dot borgman at gmail dot com]

------- Comment #7 from lennart dot borgman at gmail dot com  2009-07-03 00:35 -------
I think I found an answer to my last question here:

  http://www.mingw.org/wiki/IncludePathHOWTO

Now I only need to understand how to parse that output...


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40624