[CMake] Finding internal libraries

[Petr Kmoch]

Hi John.

I have no first-hand experience with it, but I believe the ExternalProject
module could be just what you're looking for (
http://www.cmake.org/cmake/help/v3.2/module/ExternalProject.html ). It
allows you to configure and build several projects at build time under a
CMake "superbuild" master project, while the "subprojects" themselves
remain unaware of this setup.

Petr

On Thu, Jul 9, 2015 at 5:18 PM, John LaGrone <jlagrone at smu.edu> wrote:

> On 07/08/2015 06:52 PM, cmake-request at cmake.org wrote:
>
>  cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
>>> project(ex1)
>>> find_package(foo REQUIRED)
>>> add_executable(ex1.x ex1.c)
>>> target_link_libraries(ex1.x foo)
>>>
>>
>> I don't understand. Does building the examples and lib (ie, 'everything')
>> together work or not?
>>
>> Thanks,
>>
>> Steve.
>>
>
> If I remove the "find_package(foo REQUIRED)" line or don't make it
> required, everything compiles. With the find_package command in place, the
> build fails at the configuration stage because it cannot find the package
> foo since it has not been built/installed. I think this makes perfect
> sense, but was wondering if there was a way to keep the find_package
> commands in the examples because it more accurately reflects a typical
> usage and hence makes for a better example.
>
> Thanks,
> John
>
>
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