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KSquirrel is abandoned since 2008. Its source code has been moved to https://github.com/HappySeaFox/ksquirrel. The image codecs from KSquirrel have been rebranded in 2020 as a fast and lightweight cross-platform image library called SAIL. See https://sail.software. You can still try KSquirrel in the Trinity Desktop

• Q: How to install KSquirrel ?
• Q: When I try to install KSquirrel, configure fails with Ksquirrel-libs development file (.pc) is not installed. Please install ksquirrel-libs first.
• Q: When I try to install KSquirrel, configure fails with Ksquirrel-libs development files are not installed. Please install them first.
• A: It is highly recommended to install KSquirrel and -libs as it suggested in the INSTALL file in the source distribution or at http://ksquirrel.sourceforge.net/download.php.

• Q: Both the camera and libjpeg support the jpeg format. If both are enabled which one is preferred?
• A: Jpeg files will be handled by the jpeg codec anyway. CAMERA codec uses dcraw, which can additionally support libjpeg library (for thumbnails support I think).

• Q: Both freetype and freetype-devel are installed, but the TTF codec is disabled.
• A: The TTF codec is designed for freetype-2.2.1. Since freetype is not binary compatible from version to version, it's not guaranteed that the TTF codec will be built successfully with other versions of freetype.

• Q: How to build ksquirrel-libs for x86_64?
• A: Just use ./configure.gnu --libdir=/usr/lib64 to configure ksquirrel-libs.

• Q: I compiled and installed ksquirrel-libs, but ./configure.gnu for ksquirrel gave out: error: "Header file konq_operations.h is missing. Please install kdebase-devel package.
• A: Try to install kde-devel metapackage, it works on Debian/KUbuntu systems:
  # apt-get install kde-devel

• Q: Are all images opened in tabs stored in the video memory (i.e. as OpenGL textures)?
• A: No, only the current image in the current tab is stored in the video memory.

• Q: Are all image pages in an animation stored in video memory (i.e. as OpenGL textures)?
• A: Yes. However, animations are usually small images. So don't worry about that.

• Q: How to crop an image?
• A: Open an image in the image window, press Ctrl+R and select a rectangle. Then press Y.

• Q: Can I remove codecs from /usr/lib/ksquirrel-libs?
• A: Yes. You can freely remove any codecs you don't need.

• Q: Any suggestions?
• A: It is highly recommended to stop the FAM daemon before running KSquirrel.
• A: To speed up KSquirrel startup a little bit, you can freely remove all files from /usr/lib/ksquirrel-libs, except *.so.0.8.0.
• A: Save a geometry, a position and a fullscreen state of the image window in its KWin properties: