[net-im/swift] fix build with new boost

net-im/swift/swift-9999.ebuild

@@ -6,7 +6,7 @@ EAPI=7
 LUA_COMPAT=( lua5-{1..2} luajit )
 PYTHON_COMPAT=( python3_{8..9} )
 
-inherit lua-single python-any-r1 scons-utils toolchain-funcs
+inherit flag-o-matic lua-single python-any-r1 scons-utils toolchain-funcs
 
 DESCRIPTION="An elegant, secure, adaptable and intuitive XMPP Client"
 HOMEPAGE="https://www.swift.im/"
@@ -20,7 +20,6 @@ else
 	RESTRICT="mirror"
 	SRC_URI="https://swift.im/downloads/releases/${P}/${P}.tar.gz"
 	KEYWORDS="~amd64 ~x86"
-	
 fi
 
 LICENSE="BSD BSD-1 CC-BY-3.0 GPL-3 OFL-1.1"
@@ -63,6 +62,7 @@ DOCS=(
 PATCHES=(
 	"${FILESDIR}"/${PN}-4.0.2-python3-compatibility.patch
 	"${FILESDIR}"/${PN}-4.0.2-qt-5.15-compatibility.patch
+	"${FILESDIR}"/${PN}-bind.patch
 )
 
 pkg_setup() {
@@ -122,6 +122,7 @@ src_prepare() {
 	else
 		rm -fr 3rdParty || die
 	fi
+	append-flags -DBOOST_BIND_GLOBAL_PLACEHOLDERS
 }
 
 src_configure() {