use gcc for macOS builds

fixes #26

.gitignore

@@ -12,3 +12,4 @@ bin_unix/*
 sauerbraten.app/Contents/MacOS/*
 !/**/.gitkeep
 data/p1xbraten/*gz
+.vscode

patches/macos_builds.patch

@@ -1,8 +1,36 @@
 Index: src/Makefile
 ===================================================================
---- src/Makefile	(revision 6346)
+--- src/Makefile	(revision 6502)
 +++ src/Makefile	(working copy)
-@@ -232,6 +232,9 @@
+@@ -57,6 +57,8 @@
+   STRIP= $(TOOLCHAIN)strip
+ endif
+ endif
++CC= gcc-8 # gcc because of https://github.com/sauerbraten/p1xbraten/issues/26, 8 because that's the latest version available on AppVeyor
++CXX= gcc-8
+ OSXMIN= 10.9
+ override CC+= -arch x86_64 -mmacosx-version-min=$(OSXMIN)
+ override CXX+= -arch x86_64 -mmacosx-version-min=$(OSXMIN)
+@@ -63,7 +65,7 @@
+ CLIENT_INCLUDES= $(INCLUDES) -Iinclude
+ CLIENT_LIBS= -F../sauerbraten.app/Contents/Frameworks/ -framework SDL2 -framework SDL2_image
+ CLIENT_LIBS+= -framework SDL2_mixer -framework CoreAudio -framework AudioToolbox
+-CLIENT_LIBS+= -framework AudioUnit -framework OpenGL -framework Cocoa -lz -Lenet -lenet
++CLIENT_LIBS+= -framework AudioUnit -framework OpenGL -framework Cocoa -lz -Lenet -lenet -lc++
+ else
+ CLIENT_INCLUDES= $(INCLUDES) -I/usr/X11R6/include `sdl2-config --cflags`
+ CLIENT_LIBS= -Lenet -lenet -L/usr/X11R6/lib -lX11 `sdl2-config --libs` -lSDL2_image -lSDL2_mixer -lz -lGL
+@@ -142,6 +144,9 @@
+ else
+ SERVER_INCLUDES= -DSTANDALONE $(INCLUDES)
+ SERVER_LIBS= -Lenet -lenet -lz
++ifneq (,$(findstring DARWIN,$(PLATFORM)))
++SERVER_LIBS+= -lc++
++endif
+ MASTER_LIBS= $(SERVER_LIBS)
+ endif
+ SERVER_OBJS= \
+@@ -221,6 +226,9 @@
  ifneq (,$(findstring DARWIN,$(PLATFORM)))
  install: client
  	cp sauer_client ../sauerbraten.app/Contents/MacOS/sauerbraten_universal

src/Makefile

@@ -57,13 +57,15 @@ ifneq (,$(STRIP))
   STRIP= $(TOOLCHAIN)strip
 endif
 endif
+CC= gcc-8 # gcc because of https://github.com/sauerbraten/p1xbraten/issues/26, 8 because that's the latest version available on AppVeyor
+CXX= gcc-8
 OSXMIN= 10.9
 override CC+= -arch x86_64 -mmacosx-version-min=$(OSXMIN)
 override CXX+= -arch x86_64 -mmacosx-version-min=$(OSXMIN)
 CLIENT_INCLUDES= $(INCLUDES) -Iinclude
 CLIENT_LIBS= -F../sauerbraten.app/Contents/Frameworks/ -framework SDL2 -framework SDL2_image
 CLIENT_LIBS+= -framework SDL2_mixer -framework CoreAudio -framework AudioToolbox
-CLIENT_LIBS+= -framework AudioUnit -framework OpenGL -framework Cocoa -lz -Lenet -lenet
+CLIENT_LIBS+= -framework AudioUnit -framework OpenGL -framework Cocoa -lz -Lenet -lenet -lc++
 else
 CLIENT_INCLUDES= $(INCLUDES) -I/usr/X11R6/include `sdl2-config --cflags`
 CLIENT_LIBS= -Lenet -lenet -L/usr/X11R6/lib -lX11 `sdl2-config --libs` -lSDL2_image -lSDL2_mixer -lz -lGL
@@ -146,6 +148,9 @@ MASTER_LIBS= $(STD_LIBS) -L$(WINBIN) -L$(WINLIB) -lzlib1 -lenet -lws2_32 -lwinmm
 else
 SERVER_INCLUDES= -DSTANDALONE $(INCLUDES)
 SERVER_LIBS= -Lenet -lenet -lz
+ifneq (,$(findstring DARWIN,$(PLATFORM)))
+SERVER_LIBS+= -lc++
+endif
 MASTER_LIBS= $(SERVER_LIBS)
 endif
 SERVER_OBJS= \