diff --git a/cad/opentimer/Makefile b/cad/opentimer/Makefile
--- a/cad/opentimer/Makefile
+++ b/cad/opentimer/Makefile
@@ -1,5 +1,5 @@
 PORTNAME=	opentimer
-PORTVERSION=	g20221116
+DISTVERSION=	2.1.0-g20250707
 CATEGORIES=	cad
 
 MAINTAINER=	yuri@FreeBSD.org
@@ -9,28 +9,36 @@
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-BROKEN_i386=	undefined reference to `__atomic_compare_exchange_8' #'`
-BROKEN_powerpc=	undefined reference to `__atomic_compare_exchange_8' #'`
-
 USES=		cmake compiler:c++17-lang python:test shebangfix tcl
 
-SHEBANG_FILES=	inttest/*.py
-
 USE_GITHUB=	yes
 GH_ACCOUNT=	OpenTimer
 GH_PROJECT=	OpenTimer
-GH_TAGNAME=	a57d03b
+GH_TAGNAME=	8c76916c
+
+SHEBANG_FILES=	inttest/*.py
 
 TEST_TARGET=	test
 
-PLIST_FILES=	bin/ot-shell \
-		bin/ot-tau15 \
-		bin/ot-tau18 \
-		bin/ot-utility
+OPTIONS_DEFINE=	DOCS EXAMPLES
+OPTIONS_SUB=	yes
 
 do-install: # see https://github.com/OpenTimer/OpenTimer/issues/47
 .for e in ot-shell ot-tau15 ot-tau18 ot-utility
-	${INSTALL_PROGRAM} ${WRKSRC}/bin/${e} ${STAGEDIR}${PREFIX}/bin
+	${INSTALL_PROGRAM} ${WRKSRC}/bin/${e} \
+		${STAGEDIR}${PREFIX}/bin
+.endfor
+
+post-install-DOCS-on:
+	(cd ${WRKSRC} && \
+		${COPYTREE_SHARE} "doc wiki" ${STAGEDIR}${DOCSDIR})
+
+post-install-EXAMPLES-on:
+	${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
+	(cd ${WRKSRC}/example && \
+		${COPYTREE_SHARE} . ${STAGEDIR}${EXAMPLESDIR})
+.for e in fcpc26 incremental optimizer simple sizer unit
+	${STRIP_CMD} ${STAGEDIR}${EXAMPLESDIR}/${e}/${e}
 .endfor
 
 quick-test: # runs the script suggested in https://github.com/OpenTimer/OpenTimer
diff --git a/cad/opentimer/distinfo b/cad/opentimer/distinfo
--- a/cad/opentimer/distinfo
+++ b/cad/opentimer/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1690100071
-SHA256 (OpenTimer-OpenTimer-g20221116-a57d03b_GH0.tar.gz) = 98a33a9136fc1f19dcb8cf557760ee9f308a7189850887cb2e1f04ec955ca9c3
-SIZE (OpenTimer-OpenTimer-g20221116-a57d03b_GH0.tar.gz) = 120871156
+TIMESTAMP = 1759863637
+SHA256 (OpenTimer-OpenTimer-2.1.0-g20250707-8c76916c_GH0.tar.gz) = b7cea2c9b8c4370e7b14e99d48f0705b00978148f6094a0d0e38d7bb12f45db9
+SIZE (OpenTimer-OpenTimer-2.1.0-g20250707-8c76916c_GH0.tar.gz) = 121025992
diff --git a/cad/opentimer/pkg-plist b/cad/opentimer/pkg-plist
new file mode 100644
--- /dev/null
+++ b/cad/opentimer/pkg-plist
@@ -0,0 +1,79 @@
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/fcpc26
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/fcpc26.conf
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/fcpc26.cpp
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/fcpc26.sdc
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/fcpc26.timing
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/fcpc26.v
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/fcpc26/osu018_stdcells.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/incremental/incremental
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/incremental/incremental.cpp
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/incremental/osu018_stdcells.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/map9v3/map9v3.conf
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/map9v3/map9v3.sdc
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/map9v3/map9v3.spef
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/map9v3/map9v3.timing
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/map9v3/map9v3.v
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/map9v3/osu018_stdcells
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/change_1.spef
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer.conf
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer.cpp
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer.sdc
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer.spef
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer.v
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer_Early.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/optimizer/optimizer_Late.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/osu018_stdcells.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/simple
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/simple.conf
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/simple.cpp
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/simple.sdc
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/simple.timing
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/simple/simple.v
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/NangateOpenCellLibrary_fast.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/NangateOpenCellLibrary_low_temp.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/NangateOpenCellLibrary_slow.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/NangateOpenCellLibrary_typical.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/NangateOpenCellLibrary_worst_low.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer.conf
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer.cpp
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer.sdc
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer.spef
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer.timing
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/sizer/sizer.v
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/osu018_stdcells.lib
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit.conf
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit.cpp
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit.sdc
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit.spef
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit.timing
+%%EXAMPLES%%%%PORTEXAMPLES%%%%EXAMPLESDIR%%/unit/unit.v
+bin/ot-shell
+bin/ot-tau15
+bin/ot-tau18
+bin/ot-utility
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/doc/CMakeLists-Subproject.template
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/doc/iccad14.pdf
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/doc/iccad15.pdf
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/doc/tcad16.pdf
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/doc/tcad21.pdf
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/api/timer.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/faq/compilation.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/faq/general.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/faq/programming.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/home.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/image/logo.png
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/library.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/nldm.png
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/sdc.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/spef.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/spef_example.png
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/verilog.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/io/verilog_example.png
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/milestones/logs.md
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/reference/TAU 2018 Contest Education.docx
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/reference/TAU 2018 Contest File Formats.docx
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/reference/TAU 2018 Contest Rules.docx
+%%DOCS%%%%PORTDOCS%%%%DOCSDIR%%/wiki/shell/command_manual.md