https://issues.dlang.org/show_bug.cgi?id=16962

Timothee Cour <timothee.cour2@gmail.com> changed:

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--- Comment #1 from Timothee Cour <timothee.cour2@gmail.com> ---
these also fail:

mkdir temp
rdmd --build-only --force -lib -od=temp/ main.d
core.exception.AssertError@rdmd.d(489): should have been created by
compileRootAndGetDeps


rdmd --build-only --force -lib -of=temp/main.a main.d core.exception.AssertError@rdmd.d(489): should have been created by compileRootAndGetDeps


rdmd --build-only --force -lib -oftemp/main.a main.d std.file.FileException@std/file.d(679): temp/main.a: No such file or directory


rdmd --build-only --force -lib -odtemp/ main.d std.file.FileException@std/file.d(679): temp/main.a: No such file or directory

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https://issues.dlang.org/show_bug.cgi?id=16962

--- Comment #2 from Timothee Cour <timothee.cour2@gmail.com> ---
as well as:

rdmd --build-only --force -lib -odtemp/ -o- main.d object.Exception@rdmd.d(95): Option -o- currently not supported by rdmd

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https://issues.dlang.org/show_bug.cgi?id=16962

--- Comment #3 from Timothee Cour <timothee.cour2@gmail.com> ---
also broken:
rdmd --build-only --force -od=/tmp/bar/ main.d

std.file.FileException@std/file.d(679): =/tmp/bar/main: No such file or
directory
=> rdmd doesn't seem to understand the new '=' syntax in '-od=' even though dmd
does (DMD64 D Compiler v2.072.1)

the only thing that works is:

rdmd --build-only --force -lib -od/tmp/bar/ main.d
rdmd --build-only --force -od/tmp/bar/ main.d

but NOT these:
s/-od/-od=/
s/-lib/-c/
or when we replace absolute path in od by relative path

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https://issues.dlang.org/show_bug.cgi?id=16962

Andrej Mitrovic <andrej.mitrovich@gmail.com> changed:

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--- Comment #4 from Andrej Mitrovic <andrej.mitrovich@gmail.com> ---
https://github.com/dlang/tools/commit/a63233c22dce33ff91141c5706cdc7d66a8c0099 seems to have caused the regression for the first test-case.

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https://issues.dlang.org/show_bug.cgi?id=16962

--- Comment #5 from Andrej Mitrovic <andrej.mitrovich@gmail.com> ---
(In reply to Andrej Mitrovic from comment #4)
> https://github.com/dlang/tools/commit/ a63233c22dce33ff91141c5706cdc7d66a8c0099 seems to have caused the regression for the first test-case.

That's a merge commit, it was specifically 10ca158.

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https://issues.dlang.org/show_bug.cgi?id=16962

ag0aep6g@gmail.com changed:

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--- Comment #6 from ag0aep6g@gmail.com ---
Found another one while looking into this: https://issues.dlang.org/show_bug.cgi?id=16966

Regarding the bugs here:

The -of=/-od= thing (comment 3) seems to be a simple oversight. rdmd has just not been thought of when the feature was implemented in dmd. Should be easy to fix.

-o- not working (comment 2) seems to a deliberate restriction.

Supporting -c as in the summary may be some work. I must have missed that scenario completely when doing <https://github.com/dlang/tools/pull/194>. Problem is that rdmd now treats the root module specially: compiles it separately, links everything together in a separate step. That doesn't go naturally with -c, as far as I see. May have to detect -c and do things completely different then.

-lib not working with relative paths (comment 3) seems odd. I hope it's just a simple bug, and not a design flaw. I haven't investigated.

I'm going to look into this further, but it may take me a while. If anyone else wants to have a go, that would be great.

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https://issues.dlang.org/show_bug.cgi?id=16962

Vladimir Panteleev <thecybershadow@gmail.com> changed:

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--- Comment #7 from Vladimir Panteleev <thecybershadow@gmail.com> ---
Sorry, what is the use case of using -c ? I think it working was a mere accident. If you want to syntax-check the file, use dmd (not rdmd) with -o-. Or do you want to compile everything into a single object file for some reason?

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https://issues.dlang.org/show_bug.cgi?id=16962

--- Comment #8 from Vladimir Panteleev <thecybershadow@gmail.com> ---
There is a known problem with -lib and -od:

https://issues.dlang.org/show_bug.cgi?id=14296

Admittedly it's my fault as my commit introduced the regression, however the underlying bug is that DMD treats -od differently depending on whether -lib is passed or not, which I did not expect.

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https://issues.dlang.org/show_bug.cgi?id=16962

--- Comment #9 from Timothee Cour <timothee.cour2@gmail.com> ---
>> Sorry, what is the use case of using -c ? I think it working was a mere accident. If you want to syntax-check the file, use dmd (not rdmd) with -o-. Or do you want to compile everything into a single object file for some reason?

Use case: when dmd's built-in linker magic isn't good enough (eg http://forum.dlang.org/post/mailman.765.1481492407.9448.digitalmars-d@puremagic.com where i have to first compile then link to get -pie but I keep running into similar issues where i want to link seperately because the default isn't good enough)

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https://issues.dlang.org/show_bug.cgi?id=16962

Andrei Alexandrescu <andrei@erdani.com> changed:

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--- Comment #10 from Andrei Alexandrescu <andrei@erdani.com> ---
It may indeed be worthwhile to support -c as in "solve all dependencies and produce a big .o file ready for linking". There is no easy way to do that with either dmd or rdmd. Alternatively we could use a --no-link flag but -c seems more direct. Vladimir, what do you think?

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