[CMake] Problems with EnternalProjectAdd

[Michael Ellery]

CMAKE_BUILD_DIR is not a standard variable (did you mean CMAKE_BINARY_DIR ?) - and the error seems to indicate that the variable is indeed empty so it tries to create the project directory at the root level.

-Mike

> On Feb 18, 2019, at 8:58 PM, Workbench at gmx.at <workbench at gmx.at> wrote:
> 
> Hi again,
> 
> i try to install my dependencies with ExternalProjectAdd but it gives me troubles... what's wrong with
> 
> 
>     ExternalProject_Add(
>         freetype
>         PREFIX "${CMAKE_BUILD_DIR}/freetype"
>         GIT_REPOSITORY "https://github.com/brooklynpacket/freetype2.git"
>         GIT_TAG 64bit
>         BUILD_COMMAND "cd ${CMAKE_BUILD_DIR}/freetype/src/freetype && ./autgen.sh && ./configure && make"
>         LOG_DOWNLOAD ON
>         LOG_INSTALL ON
>         LOG_CONFIGURE ON
>         LOG_BUILD ON
>         LOG_TEST ON
>         LOG_INSTALL ON
>         )
> 
> best regards!
> 
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