I am passing several LLVM/Clang passes, which means I need arguments not
de-duplicated:
-Xtemplight -profiler -Xtemplight -ignore-system
Otherwise I would get
templight++ -Xtemplight -profiler -ignore-system
which crashes. The SHELL: trick works in some cases. However, I also have
scenarios where I need a generator expression so compiler flags only apply to
C++ files:
target_compile_options(${target} PUBLIC $<$<COMPILE_LANGUAGE:CXX>:…
The following works:
target_compile_options(${target} PUBLIC
$<$<COMPILE_LANGUAGE:CXX>:SHELL:-Xtemplight -profiler -Xtemplight
-ignore-system>)
But then splitting around conditionals, the below does not and still does
de-dup breaking the build:
if (TEMPLIGHT_IGNORE_SYSTEM)
target_compile_options(${target} PUBLIC
$<$<COMPILE_LANGUAGE:CXX>:SHELL:-Xtemplight -ignore-system>)
endif()
target_compile_options(${target} PUBLIC
$<$<COMPILE_LANGUAGE:CXX>:SHELL:-Xtemplight -profiler>)
After searching for a bit, it would appear SHELL: can still not be used with
generator expressions? Has anyone else encountered this and knows a workaround?
No amount of searching or playing around with quotes got this to work.
-Jeremy
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