[Cmake] Forcing the use of C++ compiler for .c files

[Dekeyser, Kris]

Thanks for your suggestions.

The files reside indeed in a read-only repository. Due to a reason unknown
to me, some files have .c others have a .cpp extension.

I'll either try to use the CONFIGURE_FILE option or find myself a "monkey"
to rename all those files in the repository ;-)

-Kris

> -----Original Message-----
> From: William A. Hoffman [mailto:billlist at nycap.rr.com]
> Sent: Wednesday, August 11, 2004 18:04
> To: Matt Valerio; Matt Valerio
> Cc: 'cmake at www.cmake.org'; Dekeyser, Kris
> Subject: Re: [Cmake] Forcing the use of C++ compiler for .c files
> 
> 
> Assuming the files are under some sort of revision control, 
> and they have
> to stay .c files, you could try using the CONFIGURE_FILE 
> command to copy them
> into .cxx files.
> 
> SET( SOURCES foo.c bar.c car.c)
> FOREACH(f ${SOURCES})
>   SET( CXX_SOURCES ${CXX_SOURCES} ${project_BINARY_DIR}/${f}xx)
>   CONFIGURE_FILE(${project_SOURCE_DIR}/$f 
> ${project_BINARY_DIR}/${f}xx COPYONLY)
> ENDFOREACH(f)
> 
> ADD_LIBRARY(foocpp ${CXX_SOURCES})
> 
> -Bill
> 
> 
> At 11:52 AM 8/11/2004, Matt Valerio wrote:
> >On second thought, this one is a little more readable:
> >
> >for i in `ls *.c`; do mv $i `echo $i | sed -e 's/\.c/\.cpp/'`; done
> >
> >
> >Matt Valerio wrote:
> >
> >>I know it's a kludge, but you could just rename all of your 
> .c files to .cpp (assuming you are using a bash shell):
> >>for i in `ls *.c`; do mv $i `echo $i | sed -e 
> 's/\(.*\)\.c/\1\.cpp/'`; done
> >>-Matt
> >>
> >>Dekeyser, Kris wrote:
> >>
> >>>Hi,
> >>>
> >>>We currently have some legacy C++ code. Most of these 
> files use extension
> >>>.c, but they really contain C++ code. CMake however 
> automatically selects
> >>>the CMAKE_C_COMPILER to compile the files, which causes an 
> error. Forcing
> >>>CMake to use the C++ compiler doesn't work either, because 
> CMake detects
> >>>that it is not a C Compiler, but C++ compiler.
> >>>
> >>>The only solution I found is to hack the
> >>>${CMAKE_ROOT}/Modules/CMakeTestCCompiler.cmake and disable 
> the C++ check.
> >>>
> >>>However, we do need to compile another project with the C 
> Compiler and not
> >>>with the C++ compiler, so we end up to hack/unhack the 
> test file all the
> >>>time.
> >>>
> >>>Is there another - better - way to force the usuage of the 
> C++ compiler in
> >>>CMake for certain files? If not, could it be added?
> >>>
> >>>Best regards,
> >>>Kris
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