From 410a01c6db6363cb03bacf73800a60bb7a6bdafb Mon Sep 17 00:00:00 2001 From: Albrecht Schlosser Date: Mon, 26 Jul 2021 17:14:29 +0200 Subject: Add CMake compatibility functions and macros CMake/compatibility.cmake: define functions and macros to be used if a particular CMake functionality requires a higher CMake version than FLTK's minimum CMake version, see 'cmake_minimum_required(...)' in the root CMakeLists.txt. Note: target_link_directories() is available since CMake 3.13 --- CMake/compatibility.cmake | 74 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 CMake/compatibility.cmake (limited to 'CMake/compatibility.cmake') diff --git a/CMake/compatibility.cmake b/CMake/compatibility.cmake new file mode 100644 index 000000000..338e9b9e3 --- /dev/null +++ b/CMake/compatibility.cmake @@ -0,0 +1,74 @@ +# +# CMake compatibility functions and macros for the Fast Light Tool Kit (FLTK) +# +# Copyright 1998-2021 by Bill Spitzak and others. +# +# This library is free software. Distribution and use rights are outlined in +# the file "COPYING" which should have been included with this file. If this +# file is missing or damaged, see the license at: +# +# https://www.fltk.org/COPYING.php +# +# Please see the following page on how to report bugs and issues: +# +# https://www.fltk.org/bugs.php +# + +################################################################################ +# +# The functions (and macros) in this file are defined to simplify CMake +# code that uses features not available in all supported CMake versions. +# Functions should be preferred (rather than macros) because functions +# have their own variable scope. +# +# The function must apply a workaround for older versions or not add code +# at all if there is no suitable workaround. +# +# The functions included here may be removed (with according changes of the +# calling code) or the workaround code may be removed from the implementation +# after cmake_minimum_required() has been raised to a version number greater +# than or equal to the required version. +# +# Current cmake_minimum_required() version: see /CMakeLists.txt +# +################################################################################ + +################################################################################ +# +# function fl_target_link_directories - add link directories to target +# +# Requires CMake version: 3.13 +# https://cmake.org/cmake/help/latest/command/target_link_directories.html +# +# Input: +# +# - TARGET: target to add link directories to, e.g. fluid +# +# - SCOPE: one of (see CMake docs) +# +# - DIRS: quoted list of link directories (separated by ';') +# +# The 'DIRS' argument takes a standard CMake list of directories, i.e. the +# individual members must be separated by ';'. The list may be empty (""). +# If more than one directory is to be added or if the list of directories +# can be empty it *must* be quoted. This function may be called more than +# once. Each invocation adds zero, one, or more directories. +# +# Example: +# +# fl_target_link_directories (fluid PRIVATE "${PKG_CAIRO_LIBRARY_DIRS}") +# +# In this example 'PKG_CAIRO_LIBRARY_DIRS' is platform dependent and +# can be an empty list. +# +################################################################################ + +function (fl_target_link_directories TARGET SCOPE DIRS) + + if (CMAKE_VERSION VERSION_LESS "3.13") + link_directories (${DIRS}) + else () + target_link_directories (${TARGET} ${SCOPE} ${DIRS}) + endif () + +endfunction () # fl_target_link_directories() -- cgit v1.2.3