[cmake-developers] [PATCH] Allow LIB_SUFFIX be used as find path

[Brad King]

On 06/17/2016 01:33 PM, Christian Schmidbauer wrote:
>> CMake sets the lib32/lib64 ones in its own
>> platform modules for the relevant platforms so user code never
>> needs to do it.  Where in user code would it be done?
> 
> In my setup, I would create a custom my-config.cmake file

And that is included from CMakeLists.txt files?

> SET (FIND_LIBRARY_USE_CUSTOM_PATHS TRUE CACHE BOOL "force libx32 search path" FORCE)

I think you meant to use set_property here.  It is not a cache entry.
However, see below.

> This way I can overwrite cmake's default lib32/lib64 search folders.
> Why do you ask? Do you have a specific opinion about this?

If the goal is to be able to override it for a local build then
we shouldn't have to modify the project CMake code.  Setting the
global property requires editing code.  The existing properties
FIND_LIBRARY_USE_LIB{32,64}_PATHS make sense because they are
configured by CMake as properties of the current system.

Instead we could activate this behavior through a variable that
could then be added to the cache on the command line via -D.
That would allow local builds to configure any project to search
this way.  For example:

  cmake ../src -DCMAKE_FIND_LIBRARY_CUSTOM_LIB_SUFFIX=x32

-Brad