How to add the -nodefaultlibs options to an add_executable() command? - gcc

Question

I have the CMakeLists.txt for building tests using g++:
file(GLOB sources *.cpp)
foreach(src ${sources})
get_filename_component(src ${src} NAME_WE)
string(REPLACE "our_prefix" "" bin ${src})
add_executable(${bin} ${src})
target_link_libraries(${bin} our options go here)
endforeach()
What I need to do is to add the option -nodefaultlibs to each test. I've tried to do it like this:
file(GLOB sources *.cpp)
foreach(src ${sources})
get_filename_component(src ${src} NAME_WE)
string(REPLACE "our_prefix" "" bin ${src})
add_executable(${bin} ${src})
set_target_properties(${bin} PROPERTIES
INTERFACE_COMPILE_OPTIONS "-nodefaultlibs"
)
target_link_libraries(${bin} our options go here)
endforeach()
But it seems to have no effect. I've also tried to use the command target_compile_options instead of set_target_properties - and it also had no effect.
Cmake generates the link.txt file for each test - I suppose this file describes the building command used for the test. This file doesn't contain my option -nodefaultlibs.
Could you please explain me what is the right way to add the -nodefaultlibs option?

Answer 1

-nodefaultlibs is a linker flag so use set_target_properties(${bin} PROPERTIES LINK_OPTIONS -nodefaultlibs) or target_link_libraries(${bin} PRIVATE -nodefaultlibs) or for CMake 3.2 set_target_properties(${bin} PROPERTIES LINK_FLAGS -nodefaultlibs).
INTERFACE_COMPILE_OPTIONS is used for something else and target_compile_options won't show up on the link line.
The link.txt file isn't always generated. When using MSYS Makefiles the linker flags show up in linklibs.rsp.