Rewrite and redesign codegen and feature system

Also switch to somewhat proper C23 flags while we're at it.

This is a huge change. It took me forever, in between being really busy.
Sorry about that. But the good news is I'm now free to start integrating
the various patches that have accumulated since last release. Well, at
least in between still being really busy. Gotta manage expectations.

The main benefit of introducing GAMESPECIFIC() is that features
that don't apply to a particular game no longer show up *at all*, and
less time is wasted on init. It also enables a cool optimisation wherein
unnecessary REQUIRE_GAMEDATA() checks can elided at compile time
whenever the gamedata is known up-front to always exist in supported
games.

The DEF_FEAT_CVAR macro family meanwhile makes it easier to manage the
lifecycle of cvars/ccmds, with less manual registering, unhiding and
such.

Originally I was going to try and just hack these features into the
existing codegen abomination, but it just got too terrible. This rewrite
should make it easier to continue tweaking codegen behaviour in future.
It also has slightly better error messages.

1 files changed, 13 insertions, 14 deletions

diff --git a/compile b/compile
index 31e4b8f..5b55f55 100755
--- a/compile
+++ b/compile
@@ -21,6 +21,8 @@ warnings="-Wall -pedantic -Wno-parentheses -Wno-missing-braces \
 -Wno-gnu-zero-variadic-macro-arguments -Werror=implicit-function-declaration \
 -Werror=vla"
 
+stdflags="-std=c2x -D_DEFAULT_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64"
+
 dbg=0
 if [ "$dbg" = 1 ]; then
 	cflags="-O0 -g3"
@@ -38,10 +40,8 @@ cc() {
 	# ugly annoying special case
 	if [ "$_mn" = " -DMODULE_NAME=con_" ]; then _mn=" -DMODULE_NAME=con"
 	elif [ "$_mn" = "-DMODULE_NAME=sst" ]; then _mn=; fi
-	# note: using typeof and bool from C23 - see detailed comment in compile.bat
 	$CC -c -flto -fpic -fno-ident $cflags $warnings -I.build/include \
-		-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64$_mn \
-		-Dtypeof=__typeof -include stdbool.h -o ".build/${_bn%%.c}.o" "src/$1"
+			$stdflags$_mn -o ".build/${_bn%%.c}.o" "src/$1"
 }
 
 ld() {
@@ -69,7 +69,6 @@ src="\
 	fastfwd.c
 	fixes.c
 	fov.c
-	gamedata.c
 	gameinfo.c
 	gameserver.c
 	hexcolour.c
@@ -85,20 +84,20 @@ src="\
 	portalcolours.c
 	sst.c
 	trace.c
-	xhair.c
-	x86.c"
+	x86.c
+	xhair.c"
 if [ "$dbg" = 1 ]; then src="$src \
 	dbg.c
 	udis86.c"
 fi
 
-$HOSTCC -O2 -fuse-ld=lld $warnings -D_FILE_OFFSET_BITS=64 -include stdbool.h \
-		-o .build/codegen src/build/codegen.c src/build/cmeta.c src/os.c
-$HOSTCC -O2 -fuse-ld=lld $warnings -D_FILE_OFFSET_BITS=64 -include stdbool.h \
+$HOSTCC -O2 -fuse-ld=lld $warnings $stdflags \
+		-o .build/gluegen src/build/gluegen .c src/build/cmeta.c src/os.c
+$HOSTCC -O2 -fuse-ld=lld $warnings $stdflags \
 		-o .build/mkgamedata src/build/mkgamedata.c src/os.c
-$HOSTCC -O2 -fuse-ld=lld $warnings -D_FILE_OFFSET_BITS=64 -include stdbool.h \
+$HOSTCC -O2 -fuse-ld=lld $warnings $stdflags \
 		-o .build/mkentprops src/build/mkentprops.c src/os.c
-.build/codegen `for s in $src; do echo "src/$s"; done`
+.build/gluegen `for s in $src; do echo "src/$s"; done`
 .build/mkgamedata gamedata/engine.txt gamedata/gamelib.txt gamedata/inputsystem.txt \
 gamedata/matchmaking.txt gamedata/vgui2.txt gamedata/vguimatsurface.txt
 .build/mkentprops gamedata/entprops.txt
@@ -107,14 +106,14 @@ $CC -shared -fpic -fuse-ld=lld -O0 -w -o .build/libtier0.so src/stubs/tier0.c
 $CC -shared -fpic -fuse-ld=lld -O0 -w -o .build/libvstdlib.so src/stubs/vstdlib.c
 ld
 
-$HOSTCC -O2 -g3 -include test/test.h -o .build/bitbuf.test test/bitbuf.test.c
+$HOSTCC -O2 -g3 $warnings $stdflags -include test/test.h -o .build/bitbuf.test test/bitbuf.test.c
 .build/bitbuf.test
 # skipping this test on linux for now, since inline hooks aren't compiled in
 #$HOSTCC -m32 -O2 -g3 -include test/test.h -o .build/hook.test test/hook.test.c
 #.build/hook.test
-$HOSTCC -O2 -g3 -include test/test.h -o .build/kv.test test/kv.test.c
+$HOSTCC -O2 -g3 $warnings $stdflags -include test/test.h -o .build/kv.test test/kv.test.c
 .build/kv.test
-$HOSTCC -O2 -g3 -include test/test.h -o .build/x86.test test/x86.test.c
+$HOSTCC -O2 -g3 $warnings $stdflags -include test/test.h -o .build/x86.test test/x86.test.c
 .build/x86.test
 
 # vi: sw=4 tw=4 noet tw=80 cc=80