Qt6 static build on macOS fails

heikotietze

In order to get a reasonable app size I try to compile and link against static Qt - and fail at the first step.

./configure -static -release --prefix=~/QT-static

...
Checking dependencies of 'qtwebview'
Configuring 'qtbase'
-- Could NOT find double-conversion (missing: double-conversion_DIR)
-- Could NOT find md4c (missing: md4c_DIR)
QtCore: WARNING: /Users/ht/Sources/Qt/6.3.0/Src/qtbase/src/corelib/qtcore_tracepoints_p.h does not have the "We mean it." warning
-- Could NOT find double-conversion (missing: double-conversion_DIR)
QtGui: WARNING: /Users/ht/Sources/Qt/6.3.0/Src/qtbase/src/gui/qtgui_tracepoints_p.h does not have the "We mean it." warning
-- Could NOT find md4c (missing: md4c_DIR)
QtOpenGL: WARNING: /Users/ht/Sources/Qt/6.3.0/Src/qtbase/src/opengl/qtopengl_tracepoints_p.h does not have the "We mean it." warning
QtWidgets: WARNING: /Users/ht/Sources/Qt/6.3.0/Src/qtbase/src/widgets/qtwidgets_tracepoints_p.h does not have the "We mean it." warning
Generating Plugins files for BundledHarfbuzz;HarfbuzzPrivate;BundledPcre2;Core;Concurrent;Sql;Network;Xml;DBus;Gui;OpenGL;Widgets;OpenGLWidgets;DeviceDiscoverySupportPrivate;FbSupportPrivate;Test;PrintSupport...
Configuring 'qtshadertools'
CMake Error at /usr/local/homebrew/lib/cmake/zstd/zstdTargets.cmake:37 (message):
  Some (but not all) targets in this export set were already defined.

  Targets Defined: zstd::libzstd_static

  Targets not yet defined: zstd::libzstd_shared

Call Stack (most recent call first):
  /usr/local/homebrew/lib/cmake/zstd/zstdConfig.cmake:1 (include)
  qtbase/cmake/FindWrapZSTD.cmake:21 (find_package)
  /usr/local/homebrew/Cellar/cmake/3.22.3/share/cmake/Modules/CMakeFindDependencyMacro.cmake:47 (find_package)
  qtbase/lib/cmake/Qt6Core/Qt6CoreDependencies.cmake:48 (find_dependency)
  qtbase/lib/cmake/Qt6Core/Qt6CoreConfig.cmake:40 (include)
  qtbase/lib/cmake/Qt6/Qt6Config.cmake:213 (find_package)
  qtshadertools/CMakeLists.txt:13 (find_package)


CMake Warning at qtbase/lib/cmake/Qt6/Qt6Config.cmake:213 (find_package):
  Found package configuration file:

    /Users/ht/Sources/Qt/6.3.0/Src/qtbase/lib/cmake/Qt6Core/Qt6CoreConfig.cmake

  but it set Qt6Core_FOUND to FALSE so package "Qt6Core" is considered to be
  NOT FOUND.
Call Stack (most recent call first):
  qtshadertools/CMakeLists.txt:13 (find_package)

Adding -qt-zlib makes no difference. What can I do?

heikotietze

Duplicate of https://forum.qt.io/topic/131240/building-static-qt-6-2-0-for-windows-x64-always-gives-errors-when-configuring

SGaist

Hi and welcome to devnet,

I would do three things:

Update cmake to a more recent version
Build the latest Qt 6 version
Only build relevant modules (others can be added later)

Out of curiosity, why build Qt 6 statically on macOS ?