diff --git a/exhal/README b/exhal/README
index 9ca9581be..556f2460c 100644
--- a/exhal/README
+++ b/exhal/README
@@ -4,20 +4,20 @@ exhal and inhal are tools designed to decompress and recompress/insert data
 used by several NES, SNES and Game Boy games developed by HAL Laboratory.
 
 Runtime requirements:
-  cygwin-2.9.0-3
+  cygwin-3.5.7-1
 
 Build requirements:
 (besides corresponding -devel packages)
-  binutils-2.29-1
-  cygport-0.25.0-1
-  gcc-core-6.4.0-4
-  make-4.2.1-2
+  binutils-2.44-1
+  cygport-0.36.9-1
+  gcc-core-12.4.0-3
+  make-4.4.1-2
 
 Canonical website:
   https://github.com/devinacker/exhal
 
 Canonical download:
-  https://github.com/devinacker/exhal/archive/v1.21b.tar.gz
+  https://github.com/devinacker/exhal/archive/refs/tags/v1.21b.tar.gz
 
 -------------------------------------------
 
@@ -49,5 +49,8 @@ Files included in the binary package:
 
 Port Notes:
 
+----- version 1.21b-1bl2 -----
+Rebuild with gcc-12.4.0
+
 ----- version 1.21b-1bl1 -----
 Initial release by fd0 <https://github.com/fd00/>
diff --git a/exhal/exhal-1.21b-1bl1.cygport b/exhal/exhal-1.21b-1bl2.cygport
similarity index 72%
rename from exhal/exhal-1.21b-1bl1.cygport
rename to exhal/exhal-1.21b-1bl2.cygport
index 52ea91e77..05d5f6c9d 100644
--- a/exhal/exhal-1.21b-1bl1.cygport
+++ b/exhal/exhal-1.21b-1bl2.cygport
@@ -1,11 +1,15 @@
 HOMEPAGE="https://github.com/devinacker/${PN}"
-SRC_URI="https://github.com/devinacker/${PN}/archive/v${PV}.tar.gz"
+SRC_URI="https://github.com/devinacker/${PN}/archive/refs/tags/v${PV}.tar.gz"
 
 CATEGORY="Archive"
 SUMMARY="Compression and decompression tools for NES, SNES, and Game Boy games by HAL Laboratory"
 DESCRIPTION="exhal and inhal are tools designed to decompress and recompress/insert data
 used by several NES, SNES and Game Boy games developed by HAL Laboratory."
 
+LICENSE="MIT"
+LICENSE_SPDX="SPDX-License-Identifier: MIT"
+LICENSE_URI="COPYING.txt"
+
 src_compile()
 {
 	cd ${B}
diff --git a/exhal/exhal-1.21b-1bl2.src.patch b/exhal/exhal-1.21b-1bl2.src.patch
new file mode 100644
index 000000000..c965e49d8
--- /dev/null
+++ b/exhal/exhal-1.21b-1bl2.src.patch
@@ -0,0 +1,11 @@
+--- origsrc/exhal-1.21b/makefile	2016-04-10 10:21:42.000000000 +0900
++++ src/exhal-1.21b/makefile	2025-02-21 07:06:12.556500400 +0900
+@@ -2,7 +2,7 @@
+ # copyright 2013 Devin Acker (Revenant)
+ # See copying.txt for legal information.
+ 
+-CFLAGS  += -std=c99 -Os -Wall -s
++#CFLAGS  += -std=c99 -Os -Wall -s
+ 
+ # Add extension when compiling for Windows
+ ifeq ($(OS), Windows_NT)