MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0014430CMakeCMakepublic2013-09-21 07:282016-06-10 14:31
Reporterrgstr 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
PlatformUnix MakefilesOSLinux x86_64OS VersionFedora 19
Product VersionCMake 2.8.11 
Target VersionFixed in Version 
Summary0014430: LINK_DEPENDS dependency generated by custom command fails to build
DescriptionI'm using CMake to build an embedded project that requires a generated linker script.
The linker script is supposed to be generated via add_custom_command() and set_property(TARGET … PROPERTY LINK_DEPENDS …).

However CMake apparently does not create a Makefile target for the linker script and thus a subsequent call to make fails stating "No rule to make target …".
Steps To Reproduce1.) Download and extract attached minimal non-working example
2.) $ cmake . && make
3.) "make[2]: *** No rule to make target `linker_symbols.x', needed by `main'. Stop."
Additional InformationWhen adding the linker script dependency to one of the source files being built via add_property(SOURCE … PROPERTY OBJECT_DEPENDS …) everything works fine. Just uncomment the corresponding section in my CMakeLists.txt an rerun make.
TagsNo tags attached.
Relationships
Attached Filesbz2 cmake_mnwe.tar.bz2 (674) 2013-09-21 07:28
https://public.kitware.com/Bug/file/4884/*
Issue History
Date ModifiedUsernameFieldChange
2013-09-21 07:28rgstrNew Issue
2013-09-21 07:28rgstrFile Added: cmake_mnwe.tar.bz2
2013-09-22 20:38Brad KingNote Added: 0033862
2016-06-10 14:29Kitware RobotNote Added: 0042372
2016-06-10 14:29Kitware RobotStatusnew => resolved
2016-06-10 14:29Kitware RobotResolutionopen => moved
2016-06-10 14:29Kitware RobotAssigned To => Kitware Robot
2016-06-10 14:31Kitware RobotStatusresolved => closed

Notes
(0033862)
Brad King   
2013-09-22 20:38   
The output of a custom command must be listed as a source file in a target or it will not be associated with that target and included in the generated build rules for it. This convention superseded OBJECT_DEPENDS as of CMake 2.4 for purposes of bringing in custom commands to a target.

LINK_DEPENDS is independent of this and merely points at a list of files without caring where they come from. It is ignored on non-Makefile generators:

 http://www.cmake.org/cmake/help/v2.8.11/cmake.html#prop_tgt:LINK_DEPENDS [^]

and so does not make sense as a general-purpose property to bring in custom commands.
(0042372)
Kitware Robot   
2016-06-10 14:29   
Resolving issue as `moved`.

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