# For assembly files, add the option: -x ti-asm
target_compile_options(
  stub
  PRIVATE $<$<COMPILE_LANGUAGE:ASM>:-x ti-asm>
)

C:\examples>cmake -B build . -DCMAKE_MAKE_PROGRAM=gmake -G"Unix Makefiles"
-- The C compiler identification is TIClang 4.0.4
-- The ASM compiler identification is TIClang
-- Found assembler: C:/ti/compilers/ti-cgt-armllvm_4.0.4.LTS/bin/tiarmclang.exe
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/ti/compilers/ti-cgt-armllvm_4.0.4.LTS/bin/tiarmclang.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done (32.2s)
-- Generating done (0.4s)
-- Build files have been written to: C:/examples/build

C:\examples>cmake --build build --verbose
Change Dir: 'C:/examples/build'

Run Build Command(s): "C:/Program Files/CMake/bin/cmake.exe" -E env VERBOSE=1 gmake -f Makefile
"C:/Program Files/CMake/bin/cmake.exe" -SC:/examples -BC:/examples/build --check-build-system CMakeFiles/Makefile.cmake 0
"C:/Program Files/CMake/bin/cmake.exe" -E cmake_progress_start C:/examples/build/CMakeFiles C:/examples/build//CMakeFiles/progress.marks
gmake  -f CMakeFiles/Makefile2 all
gmake[1]: Entering directory 'C:/examples/build'
gmake  -f CMakeFiles/stub.dir/build.make CMakeFiles/stub.dir/depend
gmake[2]: Entering directory 'C:/examples/build'
"C:/Program Files/CMake/bin/cmake.exe" -E cmake_depends "Unix Makefiles" C:/examples C:/examples C:/examples/build C:/examples/build C:/examples/build/CMakeFiles/stub.dir/DependInfo.cmake "--color="
Dependee "C:/examples/build/CMakeFiles/stub.dir/DependInfo.cmake" is newer than depender "C:/examples/build/CMakeFiles/stub.dir/depend.internal".
Dependee "C:/examples/build/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "C:/examples/build/CMakeFiles/stub.dir/depend.internal".
Scanning dependencies of target stub
gmake[2]: Leaving directory 'C:/examples/build'
gmake  -f CMakeFiles/stub.dir/build.make CMakeFiles/stub.dir/build
gmake[2]: Entering directory 'C:/examples/build'
[ 33%] Building C object CMakeFiles/stub.dir/stub.c.obj
C:/ti/compilers/ti-cgt-armllvm_4.0.4.LTS/bin/tiarmclang.exe -c C:/examples/stub.c    -MD -MT CMakeFiles/stub.dir/stub.c.obj -MF CMakeFiles/stub.dir/stub.c.obj.d -o CMakeFiles/stub.dir/stub.c.obj
[ 66%] Building ASM object CMakeFiles/stub.dir/asm_code.o
C:/ti/compilers/ti-cgt-armllvm_4.0.4.LTS/bin/tiarmclang.exe -c C:/examples/asm_code.asm   -x ti-asm -o CMakeFiles/stub.dir/asm_code.o
tiarmclang: warning: '-x ti-asm' after last input file has no effect [-Wunused-command-line-argument]
[100%] Linking C executable stub.out
C:/ti/compilers/ti-cgt-armllvm_4.0.4.LTS/bin/tiarmclang.exe -Xlinker --output_file=stub.out -Xlinker --map_file=stub.map -Xlinker --rom_model "CMakeFiles/stub.dir/stub.c.obj" "CMakeFiles/stub.dir/asm_code.o"
gmake[2]: Leaving directory 'C:/examples/build'
[100%] Built target stub
gmake[1]: Leaving directory 'C:/examples/build'
"C:/Program Files/CMake/bin/cmake.exe" -E cmake_progress_start C:/examples/build/CMakeFiles 0

# Redefine variable for how assembly files are built, so the flags appear
# BEFORE the source file
set(CMAKE_ASM_COMPILE_OBJECT 
  "<CMAKE_ASM_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -c -o <OBJECT> <SOURCE>")