diff --git a/media-sound/wavsplit/files/wavsplit-1.2.1-gcc15.patch b/media-sound/wavsplit/files/wavsplit-1.2.1-gcc15.patch
new file mode 100644
index 0000000000000..15e4bd043104a
--- /dev/null
+++ b/media-sound/wavsplit/files/wavsplit-1.2.1-gcc15.patch
@@ -0,0 +1,13 @@
+https://bugs.gentoo.org/945262
+
+--- a/wavsplit.h
++++ b/wavsplit.h
+@@ -113,7 +113,7 @@ static __inline__ short _LE_short (unsigned char *lp)
+ 
+ #endif
+ 
+-static char *findchunk ();
++static char *findchunk (char *pstart, char *fourcc, size_t n);
+ static int readheader ();
+ static void Report (const char *Message, const char *Severity, int Verbose);
+ static int TokenOK (const char *Message, char **strPtr);
diff --git a/media-sound/wavsplit/wavsplit-1.2.1-r3.ebuild b/media-sound/wavsplit/wavsplit-1.2.1-r3.ebuild
new file mode 100644
index 0000000000000..f75424b0adbff
--- /dev/null
+++ b/media-sound/wavsplit/wavsplit-1.2.1-r3.ebuild
@@ -0,0 +1,39 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs
+
+DESCRIPTION="Simple command line tool to split WAV files"
+HOMEPAGE="https://sourceforge.net/projects/wavsplit/"
+SRC_URI="https://downloads.sourceforge.net/${PN}/${P}.tar.gz"
+
+LICENSE="GPL-2"
+SLOT="0"
+#-sparc, -amd64: 1.0: "Only supports PCM wave format" error message.
+KEYWORDS="~amd64 -sparc ~x86"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-Makefile.patch
+	"${FILESDIR}"/${P}-large-files.patch
+	"${FILESDIR}"/${P}-64bit.patch
+	"${FILESDIR}"/${P}-gcc15.patch
+)
+
+src_prepare() {
+	default
+	emake clean
+}
+
+src_compile() {
+	emake CC="$(tc-getCC)"
+}
+
+src_test() { :; } #294302
+
+src_install() {
+	dobin wav{ren,split}
+	doman wav{ren,split}.1
+	dodoc BUGS CHANGES CREDITS README{,.wavren}
+}