games/gemrb: fix crash and improve port

- use GCC (gemrb/gemrb#1786)
- add optional OpenGL and SDL2_mixer support
- add disabled pixelscaling to screensize option
- change GemRB.cfg into a proper conffile
  (remove from pkg-plist and annotate GemRB.cfg.sample with @sample)
- fix and modernize pkg-message
- use distfiles form GitHub instead of SourceForge
- make PNG, OGG, TTF and OpenAL support optional
- make optional demo assets also optional in the port
- use compiler:c++11-lang
- remove gnome and localbase uses
- remove DOC_DIR and MAN_DIR from CMAKE_ARGS
- set CMake options explicitly
- use CMake options helpers for boolean options
- organize options into AUDIO, RESOURCE and VIDEO groups

git rm games/gemrb/files/patch-gemrb_plugins_TTFImporter_CMakeLists.txt
git add games/gemrb/files/extra-patch-gemrb_plugins_TTFImporter_CMakeLists.txt

games/gemrb/Makefile

@@ -1,8 +1,8 @@
-PORTNAME=	gemrb
-PORTVERSION=	0.9.2
-CATEGORIES=	games emulators
-MASTER_SITES=	SF/${PORTNAME}/Releases/${PORTVERSION}
-DISTNAME=	${PORTNAME}-${PORTVERSION}-sources
+PORTNAME=		gemrb
+DISTVERSIONPREFIX=	v
+DISTVERSION=		0.9.2
+PORTREVISION=		1
+CATEGORIES=		games emulators
 
 MAINTAINER=	pkubaj@FreeBSD.org
 COMMENT=	GemRB (Game engine made with preRendered Background)
@@ -11,27 +11,76 @@ WWW=		https://www.gemrb.org/
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-LIB_DEPENDS=	libpng.so:graphics/png \
-		libvorbis.so:audio/libvorbis \
-		libfreetype.so:print/freetype2
-
-USES=		cmake compiler:c11 gnome iconv localbase openal:al,alut \
-		python sdl shebangfix
+USES=		cmake compiler:c++11-lang iconv python sdl shebangfix
 SHEBANG_FILES=	admin/extend2da.py
-USE_SDL=	sdl2
+USE_GCC=	yes # https://github.com/gemrb/gemrb/issues/1786
+USE_GITHUB=	yes
 USE_LDCONFIG=	yes
+USE_SDL=	sdl2
+
+CMAKE_ARGS=	-DCMAKE_BUILD_TYPE=Release \
+		-DHAVE_LDEXPF=1 \
+		-DLAYOUT=fhs \
+		-DPYTHON_VERSION=Auto \
+		-DSANITIZE=None \
+		-DSDL_BACKEND=SDL2
+CMAKE_OFF=	DISABLE_WERROR \
+		INSOURCEBUILD \
+		STATIC_LINK \
+		USE_LIBVLC \
+		USE_SDL_CONTROLLER_API
+
+SUB_FILES=	pkg-message
+
+OPTIONS_DEFINE=		DOCS
+OPTIONS_DEFAULT=	DEMO FREETYPE OPENAL OPENGL PNG SDLMIXER VORBIS
+
+OPTIONS_GROUP=		AUDIO RESOURCE VIDEO
+OPTIONS_GROUP_AUDIO=	OPENAL SDLMIXER
+OPTIONS_GROUP_RESOURCE=	DEMO FREETYPE PNG VORBIS
+OPTIONS_GROUP_VIDEO=	OPENGL RESIND
+
+OPTIONS_SUB=		yes
 
-OPTIONS_DEFINE=	DOCS
-OPTIONS_SUB=	yes
+DEMO_DESC=		Optional demo assets
+DEMO_GH_ACCOUNT=	gemrb:demo
+DEMO_GH_PROJECT=	gemrb-assets:demo
+DEMO_GH_TAGNAME=	5b5dcde:demo
 
-CMAKE_ARGS=	-DDOC_DIR="${DOCSDIR}" \
-		-DMAN_DIR="${PREFIX}/share/man/man6/" \
-		-DSDL_BACKEND=SDL2 \
-		-DUSE_OPENAL=ON \
-		-DUSE_LIBVLC=OFF \
-		-DHAVE_LDEXPF=1
+FREETYPE_LIB_DEPENDS=	libfreetype.so:print/freetype2
+FREETYPE_EXTRA_PATCHES=	${PATCHDIR}/extra-patch-gemrb_plugins_TTFImporter_CMakeLists.txt
+FREETYPE_CMAKE_BOOL=	USE_FREETYPE
+
+OPENAL_USES=		openal:al,alut
+OPENAL_CMAKE_BOOL=	USE_OPENAL
+
+OPENGL_USES=		gl
+OPENGL_USE=		gl=egl
+OPENGL_CMAKE_ON=	-DOPENGL_BACKEND=OpenGL
+OPENGL_CMAKE_OFF=	-DOPENGL_BACKEND=None
+
+PNG_LIB_DEPENDS=	libpng.so:graphics/png
+PNG_CMAKE_BOOL=		USE_PNG
+
+RESIND_DESC=		Scale to screensize with pixelscaling
+RESIND_CMAKE_BOOL=	SDL_RESOLUTION_INDEPENDANCE
+
+SDLMIXER_DESC=		Audio support via SDL_mixer
+SDLMIXER_USE=		sdl=mixer2
+SDLMIXER_CMAKE_BOOL=	USE_SDLMIXER
+
+VORBIS_LIB_DEPENDS=	libvorbis.so:audio/libvorbis
+VORBIS_CMAKE_BOOL=	USE_VORBIS
 
 PLIST_SUB=	PORTVERSION=${PORTVERSION}
-WRKSRC=		${WRKDIR}/${PORTNAME}-${PORTVERSION}
+
+post-extract-DEMO-on:
+	${MKDIR} ${WRKSRC}/demo/music/mx0100
+	${INSTALL_DATA} ${WRKSRC_demo}/demo/audio/whispers-seamless.ogg ${WRKSRC}/demo/music/mx0100/mx0100a.ogg
+	${MKDIR} ${WRKSRC}/demo/music/theme
+	${INSTALL_DATA} ${WRKSRC_demo}/demo/audio/themea.ogg ${WRKSRC}/demo/music/theme
+
+post-install:
+	${RM} ${STAGEDIR}${ETCDIR}/GemRB.cfg
 
 .include <bsd.port.mk>

games/gemrb/distinfo

@@ -1,3 +1,5 @@
-TIMESTAMP = 1705483350
-SHA256 (gemrb-0.9.2-sources.tar.gz) = 5206d7e3fee45d21030caac92bc799b12ec011f90e59d7408c4b0eb4a8330d40
-SIZE (gemrb-0.9.2-sources.tar.gz) = 16123769
+TIMESTAMP = 1708291230
+SHA256 (gemrb-gemrb-v0.9.2_GH0.tar.gz) = ea614c067483606dab680ab18cd50527f56803bd46e0888e3c786eec05d3bb7d
+SIZE (gemrb-gemrb-v0.9.2_GH0.tar.gz) = 14327547
+SHA256 (gemrb-gemrb-assets-5b5dcde_GH0.tar.gz) = 3e180e3ae063651bfabaab5795a946183212fd451986e3f4cac9203278283d23
+SIZE (gemrb-gemrb-assets-5b5dcde_GH0.tar.gz) = 11161448

games/gemrb/files/pkg-message.in

@@ -1,14 +1,24 @@
 [
 { type: install
   message: <<EOM
-To use GemRB, you must copy the Chitin.key from your respective Infinity Engine
-game CD to the GemRB directory.  If you do not copy this file, GemRB will not
-work. Additionally, %%ETCDIR%%/GemRB.cfg needs to be edited to point to the
-Infinity Engine game installation directory. Games can be installed with
-emulators/wine-devel, archivers/unshield, or the custom GemRB game installer:
-http://git.njw.name/cgit/cgit.cgi/gemrb-gameinstallers/
+You will need one of the original Infinity Engine games or the free Baldur's Gate II
+demo. GemRB does not support the Enhanced Edition versions of the games. GemRB comes
+with its own short demo.
 
-Please see http://www.gemrb.org/ for additional help and instructions.
+GemRB needs access to game files. You have several options to provide the files:
+  - copy from a Windows system
+  - install with emulators/wine
+  - extract with archivers/unshield and archivers/cabextract
+    (https://github.com/gemrb/gemrb/wiki/Unshield:-alternative-game-install-method)
+  - use the custom GemRB games installers
+    (http://git.njw.name/cgit/cgit.cgi/gemrb-gameinstallers)
+
+Additionally, %%ETCDIR%%/GemRB.cfg needs to be edited to point to the Infinity
+Engine game installation directory, i.e. the directory where you provide the game
+files from above. If it doesn't point to a valid game directory then GemRB will
+start its demo instead.
+
+Please see https://www.gemrb.org for additional help and instructions.
 EOM
 }
 ]

games/gemrb/pkg-plist

@@ -1,8 +1,7 @@
 bin/extend2da.py
 bin/gemrb
-%%ETCDIR%%/GemRB.cfg
 %%ETCDIR%%/GemRB.cfg.noinstall.sample
-%%ETCDIR%%/GemRB.cfg.sample
+@sample %%ETCDIR%%/GemRB.cfg.sample
 lib/gemrb/libgemrb_core.so
 lib/gemrb/libgemrb_core.so.%%PORTVERSION%%
 lib/gemrb/plugins/2DAImporter.so
@@ -31,20 +30,21 @@ lib/gemrb/plugins/MUSImporter.so
 lib/gemrb/plugins/MVEPlayer.so
 lib/gemrb/plugins/NullSound.so
 lib/gemrb/plugins/NullSource.so
-lib/gemrb/plugins/OGGReader.so
-lib/gemrb/plugins/OpenALAudio.so
+%%VORBIS%%lib/gemrb/plugins/OGGReader.so
+%%OPENAL%%lib/gemrb/plugins/OpenALAudio.so
 lib/gemrb/plugins/PLTImporter.so
-lib/gemrb/plugins/PNGImporter.so
+%%PNG%%lib/gemrb/plugins/PNGImporter.so
 lib/gemrb/plugins/PROImporter.so
 lib/gemrb/plugins/PSTOpcodes.so
 lib/gemrb/plugins/PVRZImporter.so
 lib/gemrb/plugins/SAVImporter.so
+%%SDLMIXER%%lib/gemrb/plugins/SDLAudio.so
 lib/gemrb/plugins/SDLVideo.so
 lib/gemrb/plugins/SPLImporter.so
 lib/gemrb/plugins/STOImporter.so
 lib/gemrb/plugins/TISImporter.so
 lib/gemrb/plugins/TLKImporter.so
-lib/gemrb/plugins/TTFImporter.so
+%%FREETYPE%%lib/gemrb/plugins/TTFImporter.so
 lib/gemrb/plugins/WAVReader.so
 lib/gemrb/plugins/WEDImporter.so
 lib/gemrb/plugins/WMPImporter.so
@@ -336,9 +336,9 @@ share/applications/gemrb.desktop
 %%DATADIR%%/demo/gem-demo.ini
 %%DATADIR%%/demo/keymap.ini
 %%DATADIR%%/demo/music/mx0100.mus
-%%DATADIR%%/demo/music/mx0100/mx0100a.ogg
+%%DEMO%%%%DATADIR%%/demo/music/mx0100/mx0100a.ogg
 %%DATADIR%%/demo/music/theme.mus
-%%DATADIR%%/demo/music/theme/themea.ogg
+%%DEMO%%%%DATADIR%%/demo/music/theme/themea.ogg
 %%DATADIR%%/demo/override/AMB_D18.ogg
 %%DATADIR%%/demo/override/AR0100.WED
 %%DATADIR%%/demo/override/AR0100HT.BMP