Adds support for DNF-based Linux distributions.

.travis/deps.sh

@@ -21,6 +21,13 @@ install_arch_linux() {
 
 }
 
+install_redhat() {
+    sudo dnf group install -y "development-tools"
+    sudo dnf install -y cmake ninja-build which g++
+    sudo dnf install -y SDL_ttf-devel
+    sudo dnf install -y freetype-devel
+
+
 install_linux() {
     sudo apt-get update -yqqm
     sudo apt-get install -ym pkg-config
@@ -85,7 +92,7 @@ install_clang64() {
 
 
 case "$1" in
-  osx|macports|linux|mingw32|mingw64|ucrt64|clang64)
+  osx|macports|linux|mingw32|mingw64|redhat|ucrt64|clang64)
     install_"$1"
     ;;
   arch-linux)

README-CMake.md

@@ -91,6 +91,8 @@ Before you begin building the simulators, you need the following:
 
       apt: `sudo apt install cmake cmake-data`
 
+      dnf: `sudo dnf install cmake`
+
       pacman: `sudo pacman install cmake`
 
   - macOS: Install `cmake` using your preferred external package management
@@ -279,6 +281,12 @@ binaries.
     $ sudo sh .travis/deps.sh linux
     ```
 
+  - Linux dnf-based distributions (e.g., Fedora, Red Hat):
+
+    ```bash
+    $ sudo sh .travis/deps.sh redhat
+    ```
+
   - macOS Homebrew:
 
     ```bash