May not be relevant to czmq, but vanilla libzmq has a hack in its
CMakeLists.txt (checks for .git directory and enables draft if found):
if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
message(STATUS "Build and install draft classes and methods")
option(ENABLE_DRAFTS "Build and install draft classes and methods" ON)
else()
message(STATUS "Not building draft classes and methods")
option(ENABLE_DRAFTS "Build and install draft classes and methods" OFF)
endif()
> On Nov 2, 2020, at 2:21 PM, Arnaud Loonstra <arn...@sphaero.org> wrote:
>
> Just a quick question. Would one need to define CZMQ_BUILD_DRAFT_API in their
> own project in order to use the DRAFT methods?
>
> For example using CMake I build the libs like this (paste from appveyor):
> - cmd: |
> cd "%LIBZMQ_BUILDDIR%"
> cmake .. -DBUILD_STATIC=OFF -DBUILD_SHARED=ON -DZMQ_BUILD_TESTS=OFF
> -DCMAKE_INSTALL_PREFIX="%INSTALL_PREFIX%"
> cmake --build . --config %Configuration% --target install
> - cmd: |
> cd "%CZMQ_BUILDDIR%"
> cmake .. -DCZMQ_BUILD_STATIC=OFF -DCZMQ_BUILD_SHARED=ON
> -DCMAKE_PREFIX_PATH="C:\tmp\ci_build" -DCMAKE_INSTALL_PRE
> FIX="%INSTALL_PREFIX%"
> cmake --build . --config %Configuration% --target install
>
> Draft methods are enabled by default. But when using a draft method I get
> unresolved external symbols (Windows)
>
> This goes away when doing #define CZMQ_BUILD_DRAFT_API before including
> czmq.h.
>
> However I'm questioning this as using make on Linux does not show this and I
> never have needed to define this.
>
> So feature or bug?
>
> Rg,
>
> Arnaud
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