Supplemental Linux® From Scratch (System V Edition) - Version #477a

Chapter 3. Graphical Libraries

libspng-0.7.4

Introduction to libspng

The libspng package provides a C library for handling PNG files.

libspng Dependencies

Required

CMake

Installation of libspng

Install libspng by running the following commands: 

mkdir build &&
cd    build &&

cmake -D CMAKE_INSTALL_PREFIX=/usr   \
      -D CMAKE_BUILD_TYPE=Release    \
      -D CMAKE_SKIP_INSTALL_RPATH=ON \
      -G Ninja .. &&

ninja

Now, as the root user: 

ninja install

Now create a pkg-config file symlink for packages that expect spng.pc instead of libspng.pc as the root user: 

ln -sfv libspng.pc /usr/lib/pkgconfig/spng.pc

Command Explanations

-D CMAKE_SKIP_INSTALL_RPATH=ON: This switch makes cmake remove hardcoded library search paths (rpath) when installing a binary executable file or a shared library. This package does not need rpath once it's installed into the standard location, and rpath may sometimes cause unwanted effects or even security issues.

Contents

Installed Programs: None
Installed Libraries: libspng and libspng_static (static)
Installed Directories: /usr/lib/cmake/libspng

Short Descriptions

libspng

provides functions that can help with handling PNG files