cmake detect unknown target listed in target_link_libraries
It seems that cmake is not able to detect targets that do not exist. Honestly I was surprised to found that out.
target_link_libraries(Foo
PRIVATE
Bar
Car
)
If the library Car doesn't exist, I would expect that cmake returns an error at configuration time. Unfortunately this is not the case. Or is the behavior voluntary?
I use cmake version 3.12.1
cmake
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
add a comment |
It seems that cmake is not able to detect targets that do not exist. Honestly I was surprised to found that out.
target_link_libraries(Foo
PRIVATE
Bar
Car
)
If the library Car doesn't exist, I would expect that cmake returns an error at configuration time. Unfortunately this is not the case. Or is the behavior voluntary?
I use cmake version 3.12.1
cmake
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
add a comment |
It seems that cmake is not able to detect targets that do not exist. Honestly I was surprised to found that out.
target_link_libraries(Foo
PRIVATE
Bar
Car
)
If the library Car doesn't exist, I would expect that cmake returns an error at configuration time. Unfortunately this is not the case. Or is the behavior voluntary?
I use cmake version 3.12.1
cmake
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
It seems that cmake is not able to detect targets that do not exist. Honestly I was surprised to found that out.
target_link_libraries(Foo
PRIVATE
Bar
Car
)
If the library Car doesn't exist, I would expect that cmake returns an error at configuration time. Unfortunately this is not the case. Or is the behavior voluntary?
I use cmake version 3.12.1
cmake
cmake
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
asked Nov 14 '18 at 13:30
lucab0nilucab0ni
1,27412030
1,27412030
add a comment |
add a comment |
1 Answer
1
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Only the first argument to target_link_libraries required to be a target, other argument may be a target, but may be other things as well. Possible types of non-first arguments are described in the CMake documentation:
- A library target name
- A full path to a library file
- A plain library name
- A link flag
(keywords are omitted in that list).
In you case CMake interprets Car as a plain library name, so it will pass option -lCar to the linker.
Note, that CMake doesn't try to interpret the linker's flags.
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
Only the first argument to target_link_libraries required to be a target, other argument may be a target, but may be other things as well. Possible types of non-first arguments are described in the CMake documentation:
- A library target name
- A full path to a library file
- A plain library name
- A link flag
(keywords are omitted in that list).
In you case CMake interprets Car as a plain library name, so it will pass option -lCar to the linker.
Note, that CMake doesn't try to interpret the linker's flags.
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
add a comment |
Only the first argument to target_link_libraries required to be a target, other argument may be a target, but may be other things as well. Possible types of non-first arguments are described in the CMake documentation:
- A library target name
- A full path to a library file
- A plain library name
- A link flag
(keywords are omitted in that list).
In you case CMake interprets Car as a plain library name, so it will pass option -lCar to the linker.
Note, that CMake doesn't try to interpret the linker's flags.
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
add a comment |
Only the first argument to target_link_libraries required to be a target, other argument may be a target, but may be other things as well. Possible types of non-first arguments are described in the CMake documentation:
- A library target name
- A full path to a library file
- A plain library name
- A link flag
(keywords are omitted in that list).
In you case CMake interprets Car as a plain library name, so it will pass option -lCar to the linker.
Note, that CMake doesn't try to interpret the linker's flags.
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
Only the first argument to target_link_libraries required to be a target, other argument may be a target, but may be other things as well. Possible types of non-first arguments are described in the CMake documentation:
- A library target name
- A full path to a library file
- A plain library name
- A link flag
(keywords are omitted in that list).
In you case CMake interprets Car as a plain library name, so it will pass option -lCar to the linker.
Note, that CMake doesn't try to interpret the linker's flags.
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
answered Nov 14 '18 at 19:56
TsyvarevTsyvarev
27.5k43264
27.5k43264
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
add a comment |
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
Yes it make sense!
– lucab0ni
Nov 14 '18 at 20:34
add a comment |
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