[lldb-dev] cmake errors with lldb on Windows 7

[Yaron Keren]

Hi Colin,

The error happens while processing the cmake files, even when running
without any configuration

  cmake -G "Visual Studio 11"  ..

it may be related to generator or maybe cmake version, as the cmake help
says:

>cmake --help-policy CMP0022
cmake version 2.8.12
  CMP0022
       INTERFACE_LINK_LIBRARIES defines the link interface.

       CMake 2.8.11 constructed the 'link interface' of a target from
       properties matching (IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?.
       The modern way to specify config-sensitive content is to use
generator
       expressions and the IMPORTED_ prefix makes uniform processing of the
       link interface with generator expressions impossible.  The
       INTERFACE_LINK_LIBRARIES target property was introduced as a
       replacement in CMake 2.8.12.  This new property is named consistently
       with the INTERFACE_COMPILE_DEFINITIONS, INTERFACE_INCLUDE_DIRECTORIES
       and INTERFACE_COMPILE_OPTIONS properties.  For in-build targets,
CMake
       will use the INTERFACE_LINK_LIBRARIES property as the source of the
       link interface only if policy CMP0022 is NEW.  When exporting a
target
       which has this policy set to NEW, only the INTERFACE_LINK_LIBRARIES
       property will be processed and generated for the IMPORTED target by
       default.  A new option to the install(EXPORT) and export commands
       allows export of the old-style properties for compatibility with
       downstream users of CMake versions older than 2.8.12.  The
       target_link_libraries command will no longer populate the properties
       matching LINK_INTERFACE_LIBRARIES(_<CONFIG>)? if this policy is NEW.

       The OLD behavior for this policy is to ignore the
       INTERFACE_LINK_LIBRARIES property for in-build targets.  The NEW
       behavior for this policy is to use the INTERFACE_LINK_LIBRARIES
       property for in-build targets, and ignore the old properties matching
       (IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?.

       This policy was introduced in CMake version 2.8.12.  CMake version
       2.8.12 warns when the policy is not set and uses OLD behavior.  Use
       the cmake_policy command to set it to OLD or NEW explicitly.


In any case, I was looking for a local debug solution. I hope lldb would do
that sometime.

Yaron



2013/12/11 Colin Riley <colin at codeplay.com>

>  Hi Yaron,
>
> Just tried creating an sln with latest llvm/clang/lldb using the Visual
> Studio 12 Win64 Generator and had no cmake errors. This is just with
> default configuration, target X86 with llvm asserts enabled. Do you have
> any other non-standard options?
>
> Cheers,
>
> Colin
>
> On 11/12/2013 14:21, Yaron Keren wrote:
>
>  Hi,
>
>  I am not sure if lldb is supposed to work on Windows. I am using cmake
> 2.8.12 with latest svn lldb, llvm, clang.
>
>  Before checking out lldb the llvm+clang projects build OK.
> After checking out lldb into tools\lldb, cmake fails on lldb
> CMakeLists.txt:
>
>  cmake -G "Visual Studio 11" -D LLVM_TARGETS_TO_BUILD=X86 -D
> LLVM_ENABLE_ASSERTIONS=1  ..
>
>  errors:
>
>  -- Configuring done
> CMake Error:
>   Error evaluating generator expression:
>
>      $<LINK_ONLY:-Wl,--start-group>
>
>    $<LINK_ONLY> expression requires exactly one parameter.
>
>
>  CMake Warning (dev) in tools/lldb/source/CMakeLists.txt:
>   Policy CMP0022 is not set: INTERFACE_LINK_LIBRARIES defines the link
>   interface.  Run "cmake --help-policy CMP0022" for policy details.  Use
> the
>   cmake_policy command to set the policy and suppress this warning.
>
>    Static library target "liblldb" has a INTERFACE_LINK_LIBRARIES
> property.
>    This should be preferred as the source of the link interface for this
>   library.  Ignoring the property and using the link implementation as the
>   link interface instead.
> This warning is for project developers.  Use -Wno-dev to suppress it.
>
>  should this error be ignored or fixed somehow?
>
>  Yaron
>
>
>
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