Ports: Add GemRB

GemRB is an open-source implementation of the Infinity engine by
Bioware, used in some of their classic role-playing games.

Ports/gemrb/package.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port='gemrb'
+version='0.9.1'
+useconfigure='true'
+files="https://github.com/gemrb/gemrb/archive/refs/tags/v${version}.tar.gz gemrb-${version}.tar.gz 6e5dbcf7398d5566751f434b0d4647196bfbe9a813e3b65ad6a4ee2f1bbfb9ba"
+auth_type='sha256'
+depends=(
+	'freetype'
+	'libiconv'
+	'python3'
+	'SDL2'
+    'SDL2_mixer'
+	'zlib'
+)
+configopts=(
+    "-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"
+    "-DCMAKE_INSTALL_PREFIX=${DESTDIR}/usr/local/"
+    '-DCMAKE_BUILD_TYPE=Release'
+    '-DDISABLE_WERROR=1'
+    '-DSTATIC_LINK=ON'
+    '-DSDL_BACKEND=SDL2'
+)
+icon_file='artwork/gemrb-logo.ico'
+launcher_name='GemRB'
+launcher_category='Games'
+launcher_command='/usr/local/bin/gemrb'
+
+configure() {
+    mkdir -p "${PORT_BUILD_DIR}/gemrb-${version}-build"
+    cd "${PORT_BUILD_DIR}/gemrb-${version}-build"
+    cmake -G Ninja "${configopts[@]}" "${PORT_BUILD_DIR}/gemrb-${version}"
+}
+
+build() {
+    ninja -C "${PORT_BUILD_DIR}/gemrb-${version}-build"
+}
+
+install() {
+    ninja -C "${PORT_BUILD_DIR}/gemrb-${version}-build" install
+}