Zirconium Linux From Scratch - Version r12.4-45-systemd

Chapter 14. Build Qt6 and Support

extra-cmake-modules-6.20.0

Introduction to Extra Cmake Modules

The Extra Cmake Modules package contains extra CMake modules used by KDE Frameworks and other packages.

This package is known to build and work properly using an LFS 12.4 platform.

Package Information

  • Download (HTTP): https://download.kde.org/stable//extra-cmake-modules-6.20.0.tar.xz

  • Download SHA256 Sum: 3711de8572db5da618efe3f28cc094ca25a1abb0bddffc63dced12c4f8caae5f

  • Download MD5 sum: f8f4244ee36b34cc4259adc117e0adb8

  • Download size: 1,289.7 KB

  • Estimated disk space required: 2,225.5 KB

  • Estimated build time: less than 0.1 SBU

Extra Cmake Modules Dependencies

Required

CMake-4.1.3

Recommended

Qt-6.10.1

Optional

PyQt (experimental support for building KDE Python bindings), and ReuseTool (for running internal tests)

Installation of Extra Cmake Modules

Prepare Extra Cmake Modules by running the following commands: 

sed -i '/"lib64"/s/64//' kde-modules/KDEInstallDirsCommon.cmake

sed -e '/PACKAGE_INIT/i set(SAVE_PACKAGE_PREFIX_DIR "${PACKAGE_PREFIX_DIR}")' \
    -e '/^include/a set(PACKAGE_PREFIX_DIR "${SAVE_PACKAGE_PREFIX_DIR}")' \
    -i ECMConfig.cmake.in
cmake -B build                     \
      -D CMAKE_INSTALL_PREFIX=/usr \
      -D BUILD_WITH_QT6=ON         \
      -D DOC_INSTALL_DIR=/usr/share/doc/extra-cmake-modules-6.20.0

Now Build the package, issue: 

cmake --build build

This package does not come with a test suite.

[Note]

Note

Unlike other KF6 packages, this module is installed in /usr because it can be used by some non-KF6 packages.

Now Install the package, as the root user: 

cmake --install build

Command Explanations

sed ... Modules/KDEInstallDirs.cmake: This command disables applications using cmake from attempting to install files in a lib64 sub-directory.

sed ... ECMConfig.cmake.in: This command protects the global cmake variable PACKAGE_PREFIX_DIR from being changed when checking ECM presence: since we install ECM into /usr, the check would set that variable to /usr, while most KDE packages expect it to be set to /opt/kf6 and would fail to build if it is set to something else.

-D DOC_INSTALL-DIR=/usr/share/doc/extra...: This switch allows installing the documentation (which is built if "sphinx" is installed) in a versioned directory.

Contents

Installed Programs: None
Installed Libraries: None
Installed Directories: /usr/share/ECM and /usr/share/doc/ECM (if documentation was built)