Robert Blake wrote:
Aha! Hadn't read this. After following everyone's advice, and using
the following section in my CMakeLists.txt file:
PROJECT(Blah)
file(GLOB_RECURSE C_FILES ${CMAKE_CURRENT_SOURCE_DIR} *.c)
set_source_files_properties(${C_FILES} PROPERTIES LANGUAGE CXX)
... I get the following make output after generating my makefiles:
make VERBOSE=1
[ 1%] Building C object PrM/src/CMakeFiles/param.dir/build_mex.c.o
cd /Users/rblake/sand/carp/m/seq/PrM/src && /usr/bin/gcc -o
CMakeFiles/param.dir/build_mex.c.o -c
/Users/rblake/sand/carp/m/PrM/src/build_mex.c
/opt/local/bin/cmake -E cmake_progress_report
/Users/rblake/sand/carp/m/seq/CMakeFiles 7
In other words, setting the language to CXX for this source code file
doesn't seem to have any effect. Any other ideas? I'm using cmake
2.6-patch 2, could that be the source of the problem?
Rob
On Apr 3, 2009, at 10:54 AM, Alexandre Feblot wrote:
Hi,
Look at that thread...
http://www.cmake.org/pipermail/cmake/2009-March/028352.html
Regards,
Alexandre
-----Original Message-----
From: cmake-boun...@cmake.org [mailto:cmake-boun...@cmake.org] On Behalf
Of Robert Blake
Sent: Friday, 03 April 2009 16:46
To: cmake@cmake.org
Subject: [CMake] Using C++ compilers for C source files?
I'm converting a large mixed C++/C cmake application to C++. The
project has many ".c" files that I would like to compile with the C++
compiler instead of the C compiler. Does anyone know the proper way
to do this in CMake?
Things I've tried:
1.) Changing CMAKE_C_COMPILER myself: Usually CMake doesn't let you
change CMAKE_C_COMPILER, but there are ways around that. This way
feels like a hack. The output while compiling still says "Compiling
C". In addition, forcing CMAKE_*_COMPILER to change makes it very
difficult to run plane cmake on Unix machines where curses is not
installed.
2.) Tell CMake that ".c" files are in the CXX language: I've tried
PROJECT(Blah CXX)
list(APPEND CMAKE_CXX_SOURCE_FILE_EXTENSIONS c)
When I run CMake on my project with these changes, I get errors like:
CMake Error: Cannot determine link language for target "foobar"
...for all my targets that depend only on .c files.
Help!
Rob
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Nadir SOUALEM
Ingénieur INRIA - Équipe SAGE
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