x11/foot: enable PGO by default

From 2% (headless build, default config) to 12% (local) faster.

Inspired by:	Arch Linux

x11/foot/Makefile

 PORTNAME=	foot
 DISTVERSION=	1.9.0
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	x11
 MASTER_SITES=	https://codeberg.org/dnkl/${PORTNAME}/archive/${DISTVERSIONFULL}${EXTRACT_SUFX}?dummy=/
 
@@ -23,10 +23,12 @@ USES=		compiler:c11 meson pkgconfig xorg
 USE_XORG=	pixman
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
-OPTIONS_DEFINE=	DOCS LTO NOTIFY UTF8PROC XDG
-OPTIONS_DEFAULT=LTO NOTIFY UTF8PROC XDG
+OPTIONS_DEFINE=	DOCS LTO NOTIFY PGO UTF8PROC XDG
+OPTIONS_DEFAULT=LTO NOTIFY PGO UTF8PROC XDG
 OPTIONS_EXCLUDE+=	${CC:T:Mgcc*:C/.+/LTO/} # undefined reference to `xstrdup'
 OPTIONS_EXCLUDE_powerpc64=	${"${/usr/bin/ld:L:tA}"==/usr/bin/ld.lld:?LTO:} # LLVM bug 47353
+OPTIONS_EXCLUDE_FreeBSD_11=	${WAYLAND_DISPLAY:UPGO} # ./pgo hangs
+OPTIONS_EXCLUDE_FreeBSD_12=	${WAYLAND_DISPLAY:UPGO} # ./pgo hangs
 
 DOCS_BUILD_DEPENDS=	scdoc:textproc/scdoc
 DOCS_MESON_ENABLED=	docs
@@ -39,6 +41,15 @@ LTO_LDFLAGS=		-fuse-ld=lld
 
 NOTIFY_RUN_DEPENDS=	notify-send:devel/libnotify
 
+PGO_USES=		python:build
+PGO_MESON_ON=		-Db_pgo=generate
+PGO_CFLAGS=		${PGO_CFLAGS_${CHOSEN_COMPILER_TYPE}}
+PGO_CFLAGS_clang=	-Wno-ignored-optimization-argument # meson -Db_pgo=use
+PGO_SCRIPT_ARGS=	--colors-regular --colors-bright --colors-256 --colors-rgb \
+			--scroll --scroll-region \
+			--attr-bold --attr-italic --attr-underline \
+			--sixel
+
 UTF8PROC_DESC=		Grapheme clustering using libutf8proc
 UTF8PROC_LIB_DEPENDS=	libutf8proc.so:textproc/utf8proc
 UTF8PROC_MESON_ENABLED=	grapheme-clustering
@@ -56,4 +67,30 @@ PLIST_FILES+=	share/site-terminfo/${PORTNAME:C,^.,&/&,} \
 MESON_ARGS+=	-Dterminfo=disabled -Ddefault-terminfo=xterm-256color
 .endif
 
+.if !defined(DEFAULT_POST_BUILD)
+post-build-PGO-on:
+	(cd ${BUILD_WRKSRC} && ./${PORTNAME}client --version) # -Wbackend-plugin/-Wmissing-profile
+.if defined(WAYLAND_DISPLAY)
+# Likely a local build, so optimize for the current config
+	(cd ${BUILD_WRKSRC} && LC_ALL=en_US.UTF-8 ./${PORTNAME} ${PYTHON_CMD} \
+		${WRKSRC}/scripts/generate-alt-random-writes.py \
+		${PGO_SCRIPT_ARGS})
+.else
+	(cd ${BUILD_WRKSRC} && ./${PORTNAME} --version) # -Wbackend-plugin/-Wmissing-profile
+	(cd ${BUILD_WRKSRC} && ${PYTHON_CMD} \
+		${WRKSRC}/scripts/generate-alt-random-writes.py \
+		--seed=${:!${AWK} '/TIMESTAMP/ { print \$3 }' ${DISTINFO_FILE}!} \
+		--rows=67 --cols=135 \
+		${PGO_SCRIPT_ARGS} \
+		pgo-input && ./pgo pgo-input)
+.endif
+	@if [ ${CHOSEN_COMPILER_TYPE} = clang ]; then \
+		llvm-profdata merge -o ${BUILD_WRKSRC}/default.profdata \
+			${BUILD_WRKSRC}/default*.profraw; \
+	fi
+	${RM} ${BUILD_COOKIE}
+	${CONFIGURE_CMD} configure -Db_pgo=use ${BUILD_WRKSRC}
+	${MAKE} -C${.CURDIR} build DEFAULT_POST_BUILD=1
+.endif
+
 .include <bsd.port.mk>