I tried changing from ASM to ASM-ATT and that fails like this:
/usr/bin/as -I/user/grc/msvdx-cvsfiles/sim/msvdx-cmake-2.8.5/systemC/src
-I/user/grc/msvdx-cvsfiles/sim/msvdx-cmake-2.8.5/systemC/src/sysc/kernel
-DNOMINMAX -DUSE_SIM_NAMESPACE -o
CMakeFiles/systemc.dir/src/sysc/qt/md/i386.s.o
/user/grc/msvdx-cvsfiles/sim/msvdx-cmake-2.8.5/systemC/src/sysc/qt/md/i386.s
/usr/bin/as: unrecognized option `-NOMINMAX'
I really don't think the -I and -D options should be passed through for
assembler files. They only make sense for C/C++ files. There should be a
separate variable like CMAKE_ASM_FLAGS that is used instead of CMAKE_C_FLAGS
or CMAKE_CXX_FLAGS. And maybe there needs to be a change to the
add_definitions() command to allow an optional LANG argument ? Do assembers
even support preprocessor definitions ?
I was able to get it to work for both 2.8.4 and 2.8.5 with the following
code:
if(UNIX)
list(APPEND sources "src/sysc/qt/qt.c")
# see if we are building 32-bit or 64-bit executables
file(WRITE ${CMAKE_BINARY_DIR}/check_32or64bit.cpp "int main(int argc,
char *argv[]) { return 8 * sizeof(char *); }\n")
try_run(
run_result
compile_result
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}/check_32or64bit.cpp
)
if (${run_result} EQUAL 32)
list(APPEND sources "src/sysc/qt/md/i386.s")
if(APPLE)
set(ASM_SYS_FLAGS "-arch i386")
else()
set(ASM_SYS_FLAGS "-32")
endif()
else()
list(APPEND sources "src/sysc/qt/md/iX86_64.s")
if(APPLE)
set(ASM_SYS_FLAGS "-arch x86_64")
else()
set(ASM_SYS_FLAGS "-64")
endif()
endif()
enable_language(ASM-ATT)
set(CMAKE_ASM-ATT_COMPILE_OBJECT "<CMAKE_ASM-ATT_COMPILER>
${ASM_SYS_FLAGS} -o <OBJECT> <SOURCE>")
endif()
I'm not sure if this is the recommended way to do this though. I thought
the documentation said to override CMAKE_ASM-ATT_COMPILE_OBJECT before the
enable_language() command. If I do that then I get the -I and -D flags back
and my ASM_SYS_FLAGS variable is ignored. Is there a cleaner way to do this
or is my current solution okay ?
2011/8/2 Alexander Neundorf <a.neundorf-w...@gmx.net>
> Hi,
>
> On Tuesday 02 August 2011, Glenn Coombs wrote:
> > Previously with cmake 2.8.4 we were using these lines to compile an
>
> with 2.8.5 there was a major rework of the assembler support (and now it
> finally does not say "Assembler support is experimental" anymore).
> Sorry that this causes inconvenience for you.
>
> If you enable "ASM", you get support for assembler via your C/C++ compiler.
> That's why you get gcc now instead of as.
> If the C/C++ compiler does not support processing assembler files, this
> language can't be enabled.
>
> If you need a "real" assembler, you have to enable the respective assembler
> "dialect". E.g. to get as/gas, you need to enable "ASM-ATT".
> This should work with both versions.
>
> Let me know if this doesn't work for you.
>
> Alex
>
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