diff --git a/audio/string-machine-lv2/Makefile b/audio/string-machine-lv2/Makefile
index 53d52f8c11c3..a8c48a2ca6ae 100644
--- a/audio/string-machine-lv2/Makefile
+++ b/audio/string-machine-lv2/Makefile
@@ -3,6 +3,7 @@
 PORTNAME=	string-machine
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.1.0
+PORTREVISION=	1
 CATEGORIES=	audio
 PKGNAMESUFFIX=	-lv2
 
@@ -15,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 BUILD_DEPENDS=	lv2>0:audio/lv2 \
 		${LOCALBASE}/include/boost/intrusive/list.hpp:devel/boost-libs
 
-USES=		gmake gnome localbase pkgconfig
+USES=		compiler:c++0x gmake gnome localbase pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	jpcima
 GH_TUPLE=	DISTRHO:DPF:7a056bb:d/dpf
@@ -24,6 +25,12 @@ USE_XORG=	x11
 
 CFLAGS+=	-I${FILESDIR} -pthread
 
+SIMD_CFLAGS_i386=	"-msse -mfpmath=sse"
+SIMD_CFLAGS_amd64=	"-msse2 -mfpmath=sse"
+SIMD_CFLAGS_armv7=	"-march=armv7 -mfpu=vfpv3"
+
+MAKE_ARGS=	SIMD_CFLAGS=${SIMD_CFLAGS_${ARCH}}
+
 PLIST_FILES=	lib/lv2/string-machine.lv2/manifest.ttl \
 		lib/lv2/string-machine.lv2/presets.ttl \
 		lib/lv2/string-machine.lv2/string-machine.so \
diff --git a/audio/string-machine-lv2/files/patch-dpf_Makefile.base.mk b/audio/string-machine-lv2/files/patch-dpf_Makefile.base.mk
new file mode 100644
index 000000000000..0f046f843ee4
--- /dev/null
+++ b/audio/string-machine-lv2/files/patch-dpf_Makefile.base.mk
@@ -0,0 +1,11 @@
+--- dpf/Makefile.base.mk.orig	2019-07-27 05:51:19 UTC
++++ dpf/Makefile.base.mk
+@@ -106,7 +106,7 @@ endif
+ # Set build and link flags
+ 
+ BASE_FLAGS = -Wall -Wextra -pipe -MD -MP
+-BASE_OPTS  = -O3 -ffast-math -mtune=generic -msse -msse2 -fdata-sections -ffunction-sections
++BASE_OPTS  = -O3 -ffast-math $(SIMD_CFLAGS) -fdata-sections -ffunction-sections
+ 
+ ifeq ($(MACOS),true)
+ # MacOS linker flags