diff --git a/devel/systemc/Makefile b/devel/systemc/Makefile
index 622421b2f18c..1ffe19f922ba 100644
--- a/devel/systemc/Makefile
+++ b/devel/systemc/Makefile
@@ -1,30 +1,36 @@
 PORTNAME=	systemc
 DISTVERSION=	3.0.1
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ classes and macros for describing complex hardware systems
 WWW=		https://www.accellera.org/downloads/standards/systemc
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-ONLY_FOR_ARCHS=	aarch64 amd64 i386
+ONLY_FOR_ARCHS=	aarch64 amd64 i386 powerpc powerpc64 powerpc64le
 ONLY_FOR_ARCHS_REASON=	configure: error: sorry...architecture not supported
 
 USES=		autoreconf compiler:c++17-lang gmake libtool
 USE_CXXSTD=	c++17 # needs to match that of cad/verilator, to avoid mismatches like https://github.com/verilator/verilator/issues/4499
 USE_GITHUB=	yes
 GH_ACCOUNT=	accellera-official
 USE_LDCONFIG=	yes
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-unix-layout=yes
 
 INSTALL_TARGET=	install-strip
 
 PORTDOCS=	*
 
 OPTIONS_DEFINE=	DOCS
 
+.include <bsd.port.options.mk>
+
+.if ${ARCH:Mpowerpc64*}
+CONFIGURE_ARGS+=	--enable-pthreads
+.endif
+
 .include <bsd.port.mk>
diff --git a/devel/systemc/files/patch-configure.ac b/devel/systemc/files/patch-configure.ac
new file mode 100644
index 000000000000..75d9fe169fdc
--- /dev/null
+++ b/devel/systemc/files/patch-configure.ac
@@ -0,0 +1,13 @@
+--- configure.ac.orig	2026-06-07 11:34:19 UTC
++++ configure.ac
+@@ -164,6 +164,10 @@ AS_CASE([${TARGET_ARCH}],
+          [TARGET_ARCH="linuxaarch64"
+           QT_ARCH="aarch64"
+           CPU_ARCH=""],
++       [powerpc64le|powerpc64], dnl
++         [TARGET_ARCH="${TARGET_ARCH}64"
++          QT_ARCH="powerpc64"
++          CPU_ARCH=""],
+        [AC_MSG_ERROR("sorry...architecture not supported")])
+ 
+      # check compiler