FindSDL_net

Finds the SDL_net library, a cross-platform network library for use with the SDL (Simple DirectMedia Layer) applications.

Note

This module is specifically intended for SDL_net version 1. Starting with version 2.1, SDL_net provides a CMake package configuration file when built with CMake and should be found using find_package(SDL2_net). These newer versions provide Imported Targets that encapsulate usage requirements. Refer to the official SDL documentation for more information.

Result Variables

This module defines the following variables:

SDL_net_FOUND

Boolean indicating whether the (requested version of) SDL_net library is found. For backward compatibility, the SDL_NET_FOUND variable is also set to the same value.

SDL_NET_VERSION_STRING

The human-readable string containing the version of SDL_net found.

SDL_NET_INCLUDE_DIRS

Include directories containing headers needed to use the SDL_net library.

SDL_NET_LIBRARIES

Libraries needed to link against to use the SDL_net library.

Deprecated Variables

For backward compatibility the following variables are also set:

SDLNET_FOUND

Deprecated since version 2.8.10: Use the SDL_net_FOUND, which has the same value.

SDLNET_INCLUDE_DIR

Deprecated since version 2.8.10: Use the SDL_NET_INCLUDE_DIRS, which has the same value.

SDLNET_LIBRARY

Deprecated since version 2.8.10: Use the SDL_NET_LIBRARIES, which has the same value.

Hints

This module accepts the following variables:

SDLDIR

Environment variable that can be set to help locate an SDL library installed in a custom location. It should point to the installation destination that was used when configuring, building, and installing SDL library: ./configure --prefix=$SDLDIR.

Examples

Finding SDL_net library and creating an imported interface target for linking it to a project target:

find_package(SDL_net)

if(SDL_net_FOUND AND NOT TARGET SDL::SDL_net)
  add_library(SDL::SDL_net INTERFACE IMPORTED)
  set_target_properties(
    SDL::SDL_net
    PROPERTIES
      INTERFACE_INCLUDE_DIRECTORIES "${SDL_NET_INCLUDE_DIRS}"
      INTERFACE_LINK_LIBRARIES "${SDL_NET_LIBRARIES}"
  )
endif()

target_link_libraries(project_target PRIVATE SDL::SDL_net)

When working with SDL_net version 2, the upstream package provides the SDL2_net::SDL2_net imported target directly. It can be used in a project without using this module:

find_package(SDL2_net)
target_link_libraries(project_target PRIVATE SDL2_net::SDL2_net)

See Also

• The FindSDL module to find the main SDL library.