diff --git a/external/gpl3/gcc/README.gcc10 b/external/gpl3/gcc/README.gcc10
deleted file mode 100644
index d59237830085..000000000000
--- a/external/gpl3/gcc/README.gcc10
+++ /dev/null
@@ -1,119 +0,0 @@
-$NetBSD: README.gcc10,v 1.24 2021/08/16 17:42:05 mrg Exp $
-
-
-new stuff:
-	libmpx
-	liboffloadmic
-	libvtv
-	libcet
-	libphobos
-	d
-	gfortran
-	libbacktrace: +dwarf5_CFLAGS = $(libbacktrace_TEST_CFLAGS) -gdwarf-5
-
-
-todo:
-	- audit all uses of new warning-disable variables and
-	  convert some from -Wno- to -Wno-error=
-
-arch/feature list.
-
-tools:		does build.sh tools work?
-kernels:	does a kernel run?  y (yes), b (builds/ready), ? (not ready)
-libgcc:		does libgcc build?
-native-gcc:	does a full mknative-gcc complete?
-make release:	does build.sh release complete?
-runs:		does the system boot with a full world?
-atf:		does atf run / compare well
-switched:	has port switched?  y (yes), n (no/ready), ? (not ready)
-
-
-architecture	tools	kernels	libgcc	native-gcc	make release	runs	atf	switched
-------------	-----	-------	------	----------	------------	----	---	--------
-aarch64		y	y	y	y		y		y	y	y
-aarch64eb	y	y	y	y		y		y	y	y
-alpha		y	y	y	y		y		y	y	y
-earmv4		y	y	y	y		y		y	?	y
-earmv4eb	y	b	y	y		y		?	?	y
-earmv5		y	b	y	y		y		y	y	y
-earmv5eb	y	b	y	y		y		?	?	y
-earmv5hf	y	y	y	y		y		?	?	y
-earmv5hfeb	y	b	y	y		y		?	?	y
-earmv6		y	b	y	y		y		y	y	y
-earmv6eb	y	b	y	y		y		y	y	y
-earmv6hf	y	y	y	y		y		y	y	y
-earmv6hfeb	y	y	y	y		y		y	y	y
-earmv7		y	b	y	y		y		y	y	y
-earmv7eb	y	b	y	y		y		y	y	y
-earmv7hf	y	y	y	y		y		y	y	y
-earmv7hfeb	y	y	y	y		y		y	y	y
-hppa		y	y	y	y		y		y	y	y
-i386		y	y	y	y		y		y	n[8]	y
-ia64		y	y	y	y		y		?	N/A	y
-m68000		y	b	y	y		y		n[1]	?	y
-m68k		y	y	y	y		y		y	?	y
-mipseb		y	y	y	y		y		y	?	y
-mipsel		y	y	y	y		y		y	?	y
-mips64eb	y	y	y	y		y		y	y	y
-mips64el	y	b	y	y		y		y	?	y
-powerpc		y	b	y	y		y		y	y	y
-powerpc64	y	b	y	y		y		N/A	N/A	y
-sh3eb		y	b	y	y		y		?[2]	?	y
-sh3el		y	y	y	y		y		y	y[7]	y
-sparc		y	y	y	y		y		y	y	y
-sparc64		y	y	y	y		y		y	y	y
-vax		y	y	y	y		y		y	n[6]	y
-x86_64		y	y	y	y		y		y	y	y
-riscv32		y	N/A	y	y		y		N/A	N/A	y
-riscv64		y	N/A	y	y		y		N/A	N/A	y
---
-coldfire	?	N/A	?	?		?		N/A	N/A
-------------	-----	-------	------	----------	------------	----	---
-architecture	tools	kernels	libgcc	native-gcc	make release	runs	atf
-
-[1] - kernel may be too large, does not boot.  GCC 9 is the same, though.
-[2] - failed to find any sh3-eb systems to test.
-[6] - vax vs c++ exceptions issue, same as it ever was
-[7] - fails just as poorly in gxemul/landisk as GCC 9
-[8] - i386 seems to have a signal delivery issue.  pthread tests hang and then
-      complain with eg:
-	  threads_and_exec: q[ 627.6700846] sorry, pid 3154 was killed: orphaned traced process
-      this problem occurs with GCC 9 as well.  works in qemu?
-
-
-CPU vs platform test table (for CPUs with multiple ports).  this is "make release" or just kernels.
-values:		y (yes), k (kernels only), n (failed), r (running), ? (not attempted), nx (yes, no x11)
-
-CPU		platform list
----		-------- ----
-		acorn32		cats	epoc32	evbarm-eb	evbarm-el	hpcarm		iyonix		netwinder	shark 		zaurus
-earmv4:		y		y	y	y		y		y		 		y		y		 
-earm:		 		 	 	y		y		 		y		 		 		y
-earmhf:		 		 	 	y		y		 		 		 		 		 
-earmv6:		 		 	 	y		y
-earmv6hf:	 		 	 	y		y
-earmv7:		 		 	 	y		y
-earmv7hf:	 		 	 	y		y
-
-		amiga		atari	cesfic	hp300		luna68k		mac68k		mvme68k		news68k		next68k		sun3	x68k
-m68k:		y		y	y	y		y		y		y		y		y		y 	y
-
-		evbmips		emips		ews4800mips	mipsco		newsmips	sgimips
-mipseb:		y		y		y		y		y		y
-
-		evbmips		algor		arc		cobalt		hpcmips		pmax
-mipsel:		y		y		y		y		y		y
-
-		algor		evbmips		pmax
-mips64eb:	 		y		 
-mips64el:	y		y		y
-
-		amigappc	bebox	evbppc	ibmnws		macppc		mvmeppc		ofppc		prep		rs6000		sandpoint
-powerpc:	y		y	y	y		y		y		y		y		y		y
-
-		evbppc		macppc		ofppc
-powerpc64:	y		y		y
-
-		dreamcast	evbsh3		hpcsh		landisk		mmeye
-sh3eb:		 		y		 		 		y
-sh3el:		y		y		y		y
diff --git a/external/gpl3/gcc/README.gcc12 b/external/gpl3/gcc/README.gcc12
new file mode 100644
index 000000000000..8cfc8b71e8b5
--- /dev/null
+++ b/external/gpl3/gcc/README.gcc12
@@ -0,0 +1,109 @@
+$NetBSD: README.gcc12,v 1.1 2023/07/30 06:37:23 mrg Exp $
+
+
+new stuff:
+	libmpx
+	liboffloadmic
+	libvtv
+	libcet
+	libphobos
+	d
+	gfortran
+	libbacktrace: +dwarf5_CFLAGS = $(libbacktrace_TEST_CFLAGS) -gdwarf-5
+	libcody
+	c++tools
+
+todo:
+	- audit all uses of new warning-disable variables and
+	  convert some from -Wno- to -Wno-error=
+
+arch/feature list.
+
+tools:		does build.sh tools work?
+kernels:	does a kernel run?  y (yes), b (builds/ready), ? (not ready)
+libgcc:		does libgcc build?
+native-gcc:	does a full mknative-gcc complete?
+make release:	does build.sh release complete?
+runs:		does the system boot with a full world?
+atf:		does atf run / compare well
+switched:	has port switched?  y (yes), n (no/ready), ? (not ready)
+
+
+architecture	tools	kernels	libgcc	native-gcc	make release	runs	atf	switched
+------------	-----	-------	------	----------	------------	----	---	--------
+aarch64		?	?	?	?		?		?	?	?
+aarch64eb	?	?	?	?		?		?	?	?
+alpha		?	?	?	?		?		?	?	?
+earmv4		?	?	?	?		?		?	?	?
+earmv4eb	?	?	?	?		?		?	?	?
+earmv5		?	?	?	?		?		?	?	?
+earmv5eb	?	?	?	?		?		?	?	?
+earmv5hf	?	?	?	?		?		?	?	?
+earmv5hfeb	?	?	?	?		?		?	?	?
+earmv6		?	?	?	?		?		?	?	?
+earmv6eb	?	?	?	?		?		?	?	?
+earmv6hf	?	?	?	?		?		?	?	?
+earmv6hfeb	?	?	?	?		?		?	?	?
+earmv7		?	?	?	?		?		?	?	?
+earmv7eb	?	?	?	?		?		?	?	?
+earmv7hf	?	?	?	?		?		?	?	?
+earmv7hfeb	?	?	?	?		?		?	?	?
+hppa		?	?	?	?		?		?	?	?
+i386		?	?	?	?		?		?	?	?
+ia64		?	?	?	?		?		?	?	?
+m68000		?	?	?	?		?		?	?	?
+m68k		?	?	?	?		?		?	?	?
+mipseb		?	?	?	?		?		?	?	?
+mipsel		?	?	?	?		?		?	?	?
+mips64eb	?	?	?	?		?		?	?	?
+mips64el	?	?	?	?		?		?	?	?
+powerpc		?	?	?	?		?		?	?	?
+powerpc64	?	?	?	?		?		?	?	?
+sh3eb		?	?	?	?		?		?	?	?
+sh3el		?	?	?	?		?		?	?	?
+sparc		?	?	?	?		?		?	?	?
+sparc64		?	?	?	?		?		?	?	?
+vax		?	?	?	?		?		?	?	?
+x86_64		y	?	?	?		?		?	?	?
+riscv32		?	?	?	?		?		?	?	?
+riscv64		?	?	?	?		?		?	?	?
+------------	-----	-------	------	----------	------------	----	---
+architecture	tools	kernels	libgcc	native-gcc	make release	runs	atf
+
+
+CPU vs platform test table (for CPUs with multiple ports).  this is "make release" or just kernels.
+values:		y (yes), k (kernels only), n (failed), r (running), ? (not attempted), nx (yes, no x11)
+
+CPU		platform list
+---		-------- ----
+		acorn32		cats	epoc32	evbarm-eb	evbarm-el	hpcarm		iyonix		netwinder	shark 		zaurus
+earmv4:		?		?	?	?		?		?		 		?		?		 
+earm:		 		 	 	?		?		 		?		 		 		?
+earmhf:		 		 	 	?		?		 		 		 		 		 
+earmv6:		 		 	 	?		?
+earmv6hf:	 		 	 	?		?
+earmv7:		 		 	 	?		?
+earmv7hf:	 		 	 	?		?
+
+		amiga		atari	cesfic	hp300		luna68k		mac68k		mvme68k		news68k		next68k		sun3	x68k
+m68k:		?		?	?	?		?		?		?		?		?		y 	?
+
+		evbmips		emips		ews4800mips	mipsco		newsmips	sgimips
+mipseb:		?		?		?		?		?		?
+
+		evbmips		algor		arc		cobalt		hpcmips		pmax
+mipsel:		?		?		?		?		?		?
+
+		algor		evbmips		pmax
+mips64eb:	 		?		 
+mips64el:	?		?		?
+
+		amigappc	bebox	evbppc	ibmnws		macppc		mvmeppc		ofppc		prep		rs6000		sandpoint
+powerpc:	?		?	?	?		?		?		?		?		?		?
+
+		evbppc		macppc		ofppc
+powerpc64:	?		?		?
+
+		dreamcast	evbsh3		hpcsh		landisk		mmeye
+sh3eb:		 		?		 		 		?
+sh3el:		?		?		?		?