Sigil compilation error with 2.2.1 on Linux Mint 21.1

[darkbreath]

I installed all the needed packages specified here https://github.com/Sigil-Ebook/Sigil...Linux_older.md. This cmake command fails on version 2.2.1:

cmake -DUSE_SYSTEM_LIBS=1 -DUSE_QT5=1 -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ../sigil-src

The error is:

$ cmake -DUSE_SYSTEM_LIBS=1 -DUSE_QT5=1 -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ../sigil-src
-- Trying to use System Libraries...
-- CMake version in use: 3.22.1
-- Using older findpython cmake module
-- Using System ZLIB
-- Using System MiniZip
-- Using System Hunspell
-- Using System PCRE2
-- Could NOT find Qt5Svg (missing: Qt5Svg_DIR)
CMake Warning at src/qt5sigil.cmake:38 (find_package):
  Found package configuration file:

    /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake

  but it set Qt5_FOUND to FALSE so package "Qt5" is considered to be NOT
  FOUND.  Reason given by package:

  Failed to find Qt5 component "Svg" config file at
  "/usr/lib/x86_64-linux-gnu/cmake/Qt5Svg/Qt5SvgConfig.cmake"

  

Call Stack (most recent call first):
  src/CMakeLists.txt:676 (include)


-- Using older PYTHON_LIBRARIES CMAKE variable to link to Python
-- Configuring done
CMake Error at src/qt5sigil.cmake:230 (add_executable):
  Target "sigil" links to target "Qt5::Svg" but the target was not found.
  Perhaps a find_package() call is missing for an IMPORTED target, or an
  ALIAS target is missing?
Call Stack (most recent call first):
  src/CMakeLists.txt:676 (include)


-- Generating done
CMake Generate step failed.  Build files cannot be regenerated correctly.

Any idea what could be wrong?

[KevinH]

Yes you are missing the package that supplies QtSvg and its headers.

[DiapDealer]

libqt5svg5-dev should get both.

I'll make sure to add that to the Older Linux build documentation since the latest is now Qt6-only. QtSvg was only a runtime requirement up to (and including) Sigil 2.0.2. It became a build requirement starting with Sigil 2.1.0

EDIT: I'm sorry. Changed to reflect the need for Qt5