Re: Error trying to build Objective-C++ on Windows

[Ivan Vučica]

Some rules are built into GNU Make.

This:

  https://www.gnu.org/software/make/manual/html_node/Catalogue-of-Rules.html

suggests you should run "make -p" in a directory with no makefile to check what rules are available.

If the rule doesn't exist, it should be trivial to add it and even make it optional under Windows-only using Make's if statement:

  https://www.gnu.org/software/make/manual/html_node/Suffix-Rules.html#Suffix-Rules

On Fri, May 16, 2014 at 6:17 PM, Doug Simons <address@hidden> wrote:

I'm getting a "No rule to make target" error when trying to compile some Objective-C++ files that I just added to my project on Windows. I haven't used Objective-C++ previously, so I googled around to find out what I need to do. I added a <product>_OBJCC_FILES section to list my .mm files, and also "CC=$(CXX)" but no luck.

Here's the relevant portion of my GNUmakefile:

CC=$(CXX)

APP_NAME=Eggplant

VERSION=__VERSION__

Eggplant_OBJCC_FILES=\
        ABBYYCommands.mm\
        NSString+Wchar.mm\
        Engine.mm

...

And here's the actual error:

make[4]: *** No rule to make target `obj/Eggplant.obj/ABBYYCommands.mm.o', needed by `Eggplant.app/./Eggplant.exe'.  Sto
p.
make[3]: *** [internal-app-run-compile-submake] Error 2
make[2]: *** [Eggplant.all.app.variables] Error 2
make[1]: *** [internal-all] Error 2
make: *** [internal-all] Error 2
_____________________________

Any clues about what I'm missing? Is there a compile flag I need to add somewhere? It looks as though it doesn't even recognize the .mm file type.

Thanks for any help!

Doug Simons


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Ivan Vučica

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