https://issues.dlang.org/show_bug.cgi?id=23401

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
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           Priority|P1                          |P4

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https://issues.dlang.org/show_bug.cgi?id=23401

Walter Bright <bugzilla@digitalmars.com> changed:

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                 CC|                            |bugzilla@digitalmars.com

--- Comment #1 from Walter Bright <bugzilla@digitalmars.com> ---
Actually, dmd cross compiles using the -os=windows, -os=freebsd, etc., switch. I use it all the time.

But you're right, there's a problem with cross-compilation of .c files because how does one run the C preprocessor on another platform?

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https://issues.dlang.org/show_bug.cgi?id=23401

--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> ---
Adam - can you suggest a proposal for how to specify which preprocessor is run?

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https://issues.dlang.org/show_bug.cgi?id=23401

--- Comment #3 from Adam D. Ruppe <destructionator@gmail.com> ---
I'd do a command line switch.

`-importc-cpp=whatever`

sets whatever as the command to use as the preprocessor.

Then copy gdc's

`-Xpreprocessor arg`

to pass extra arguments to the preprocessor.

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https://issues.dlang.org/show_bug.cgi?id=23401

--- Comment #4 from Walter Bright <bugzilla@digitalmars.com> ---
You can currently set the environment variable CPPCMD to the C preprocessor to use.

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https://issues.dlang.org/show_bug.cgi?id=23401

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
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            Summary|importc can't select        |ImportC: add -cpp=filename
                   |preprocessor                |switch to select C
                   |                            |preprocessor

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https://issues.dlang.org/show_bug.cgi?id=23401

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
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           Keywords|                            |pull

--- Comment #5 from Dlang Bot <dlang-bot@dlang.rocks> ---
@WalterBright created dlang/dmd pull request #15112 "fix Issue 23401 - ImportC: add -cpp=filename switch to select C prepr…" fixing this issue:

- fix Issue 23401 - ImportC: add -cpp=filename switch to select C preprocessor

https://github.com/dlang/dmd/pull/15112

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https://issues.dlang.org/show_bug.cgi?id=23401

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #15112 "fix Issue 23401 - ImportC: add -cpp=filename switch to select C prepr…" was merged into master:

- f79a7a4b68f5f7cbfef58249f4c9be7a98b699cd by Walter Bright:
  fix Issue 23401 - ImportC: add -cpp=filename switch to select C preprocessor

https://github.com/dlang/dmd/pull/15112

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