View source for Qt-contributors-summit-2013-CMake-files-feedback-requests

# CMake files can be used elegantly for all platforms and most Qt configurations (shared/static/mac-framework/cross-compiles), especially with CMake 2.8.11
# # Recent features in CMake and Qt 5.1 implement ‘target usage requirements’ http://community.kde.org/Frameworks/Epics/CMake_target_usage_requirements
# # https://qt.gitorious.org/qt/qtbase/blobs/dev/tests/auto/cmake/test_interface/CMakeLists.txt
# Qt CI tests the CMake files in many scenarios in the build and install locations.
# Upcoming features in CMake upstream make using static Qt builds more elegant
# # A file needs to be generated whenever QtGui is used which loads the platform plugin (for qmake feature-parity). This will be automatic.
# # Support for multiple toolchains and proper sysroot handling will make using Qt in cross-compile scenarios more easy.
# CMake toolchain files for all platforms will be generated while building Qt: https://codereview.qt.io/#change,53858
# CMake functionality is growing ever-more declarative

<div class="cpp-qt geshi">

# <div class="de1">     find_package<span class="br0">(</span>Qt4<span class="br0">)</span></div>
# <div class="de1">     find_package<span class="br0">(</span>Qt5Core<span class="br0">)</span></div>
# <div class="de1">    </div>
# <div class="de1">     qt4_generate_moc<span class="br0">(</span>myfile.<span class="me1">h</span> moc_myfile.<span class="me1">cpp</span> TARGET qt4_foo<span class="br0">)</span> <span class="co2"># Note, qt5_foo target doesn't</span></div>
# <div class="de2">                                                          <span class="co2"># exist until below.</span></div>
# <div class="de1">    </div>
# <div class="de1">     qt5_generate_moc<span class="br0">(</span>myfile.<span class="me1">h</span> moc_myfile.<span class="me1">cpp</span> TARGET qt5_foo<span class="br0">)</span> <span class="co2"># Note, qt5_foo target doesn't</span></div>
# <div class="de1">                                                          <span class="co2"># exist until below.</span></div>
# <div class="de1">    </div>
# <div class="de2">     add_library<span class="br0">(</span>qt4_foo ...<span class="br0">)</span></div>
# <div class="de1">     add_library<span class="br0">(</span>qt5_foo ...<span class="br0">)</span></div>

</div>

# Use of CMake is growing more declarative. Ie from

<div class="cpp-qt geshi">

# <div class="de1">set<span class="br0">(</span>srcs foo.<span class="me1">cpp</span><span class="br0">)</span></div>
# <div class="de1"><span class="kw1">if</span> <span class="br0">(</span>WIN32<span class="br0">)</span></div>
# <div class="de1">  list<span class="br0">(</span>APPEND srcs foo_win.<span class="me1">cpp</span><span class="br0">)</span></div>
# <div class="de1">endif<span class="br0">(</span><span class="br0">)</span></div>
# <div class="de2">add_library<span class="br0">(</span>foolib $<span class="br0">{</span>srcs<span class="br0">}</span><span class="br0">)</span></div>
# <div class="de1">target_link_libraries<span class="br0">(</span>foolib bar<span class="br0">)</span></div>
# <div class="de1"><span class="kw1">if</span> <span class="br0">(</span>UNIX<span class="br0">)</span></div>
# <div class="de1">  target_link_libraries<span class="br0">(</span>foolib unixlib<span class="br0">)</span>  </div>
# <div class="de1">endif<span class="br0">(</span><span class="br0">)</span></div>

</div>

to

<div class="cpp-qt geshi">

# <div class="de1">add_library<span class="br0">(</span>foolib </div>
# <div class="de1">  foo.<span class="me1">cpp</span></div>
# <div class="de1">  $<span class="sy0">&lt;</span>$<span class="sy0">&lt;</span>PLATFORM_ID<span class="sy0">:</span>WIN32<span class="sy0">&gt;:</span>foo_win.<span class="me1">cpp</span><span class="sy0">&gt;</span></div>
# <div class="de1"><span class="br0">)</span></div>
# <div class="de2">target_link_libraries<span class="br0">(</span>foolib </div>
# <div class="de1">  bar</div>
# <div class="de1">  $<span class="sy0">&lt;</span>$<span class="sy0">&lt;</span>PLATFORM_ID<span class="sy0">:</span>UNIX<span class="sy0">&gt;:</span>unixlib<span class="sy0">&gt;</span></div>
# <div class="de1"><span class="br0">)</span></div>

</div>

in version 2.8.13.

# CMake might replace its current language with a more-declarative one (Lua).

Tasks:

# Improve Creator CMake support
# Complete the cross compiling features upstream
# Implement CPack generator for BB10 bar files.
# Implement UI in creator to create packages in all formats known to CPack