[Issue 12116] dmd -op -od broken

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12116

Andrei Alexandrescu <andrei at erdani.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andrei at erdani.com

--- Comment #4 from Andrei Alexandrescu <andrei at erdani.com> ---
(In reply to Timothee Cour from comment #3)
> still completely broken:
> 
> dmd --version
> DMD64 D Compiler v2.073.0-devel-a2b772f
> rdmd | grep build
> rdmd build 20170107
> 
> fun.d:
> void main(){}
> 
> # with absolute path_to_file.d:
> dmd -op -od/tmp/d01 /path/bug_12116/fun.d
> creates ./fun and /path/bug_12116/fun.o (BUG: /tmp/d01 is ignored)
> 
> dmd -c -op -od/tmp/d01 /path/bug_12116/fun.d
> creates /path/bug_12116/fun.o (BUG: /tmp/d01 is ignored)
> 
> rdmd -c -op -od/tmp/d01 /path/bug_12116/fun.d
> creates /tmp/d01/fun.o (BUG: inconsistent with dmd)
> 
> # with .. in path_to_file.d:
> mkdir temp && cd temp
> dmd -op -od/tmp/d01 ../bug_12116/fun.d
> creates ./fun and /tmp/bug_12116/fun.o (BUG: expected: something under
> /tmp/d01)
> 
> rdmd -op -od/tmp/d01 ../bug_12116/fun.d
> creates /tmp/d01/fun (BUG: inconsistent with dmd) and the .o under
> */.rdmd-501/* (OK)
> 
> 
> # with -c:
> dmd -c -op -od/tmp/d01 ../bug_12116/fun.d
> /tmp/bug_12116/fun.o (BUG)
> 
> rdmd -c -op -od/tmp/d01 ../bug_12116/fun.d
> creates /tmp/d01/fun.o (BUG: inconsistent with dmd)
> 
> 
> # with no absolute path and not .. in file.d:
> dmd -c -op -od/tmp/d01 bug_12116/fun.d
> creates /tmp/d01/bug_12116/fun.o (OK)
> 
> rdmd -c -op -od/tmp/d01 bug_12116/fun.d
> creates /tmp/d01/fun.o (BUG:inconsistent with dmd)
> 
> Other argument why -op is much less useful compared to -oq:
> * forces you be at the root of module import paths
> * if you have multiple module roots, it can't work:
> 
> dmd -c -op -od/tmp/d01/ -Iroot1/import -Ipath2/root2/import/
> root1/import/std/path.d path2/root2/import/core/stdio.d
> 
> => will create:
> /tmp/d01/root1/import/std/path.o
> /tmp/d01/path2/root2/import/core/stdio.o
> 
> with -oq semantics are a lots easier, predictable, no weird edge cases, and
> easy to implement:
> /tmp/d01/std.path.o
> /tmp/d01/core.stdio.o

Could you please paste this entire post along with what _should_ be the
behavior? Thanks.

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