Beyond Linux® From Scratch (System V Edition) - Version r12.4-426

Chapter 29. Introduction to KDE

extra-cmake-modules-6.17.0

Introduction to Extra Cmake Modules

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

[Note]

Note

Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.

Package Information

Additional Downloads

Extra Cmake Modules Dependencies

Required

CMake-4.1.2

Recommended

Qt-6.10.0

Optional

sphinx-8.2.3 (for building documentation), PyQt (experimental support for building KDE Python bindings), and ReuseTool (for running internal tests)

Installation of Extra Cmake Modules

First, fix the package to be compatible with the latest Python release: 

patch -Np1 -i ../extra-cmake-modules-6.17.0-upstream_fix-1.patch

Install 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 &&

mkdir build &&
cd    build &&

cmake -D CMAKE_INSTALL_PREFIX=/usr \
      -D BUILD_WITH_QT6=ON         \
      -D DOC_INSTALL_DIR=/usr/share/doc/extra-cmake-modules-6.17.0 \
      .. &&
make

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, as the root user: 

make install

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-8.2.3 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)