Index: head/audio/artyfx-lv2/Makefile
===================================================================
--- head/audio/artyfx-lv2/Makefile
+++ head/audio/artyfx-lv2/Makefile
@@ -17,7 +17,7 @@
 BUILD_DEPENDS=	lv2>0:audio/lv2
 LIB_DEPENDS=	libsndfile.so:audio/libsndfile
 
-USES=		cmake localbase:ldflags pkgconfig
+USES=		cmake compiler:c++11-lang gnome localbase:ldflags pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	openAVproductions
 GH_PROJECT=	openAV-ArtyFX
@@ -30,6 +30,8 @@
 OPTIONS_DEFAULT_i386=	SSE
 
 SSE_CMAKE_ON=	-DPORT_SIMD_FLAGS:STRING="-msse -msse2 -mfpmath=sse"
+
+CXXFLAGS_powerpc64=	-maltivec
 
 post-patch:
 	@${REINPLACE_CMD} -e 's| -g | |; s| -O1 | |; s/-msse2 -mfpmath=sse/$${PORT_SIMD_FLAGS}/g' \
Index: head/audio/artyfx-lv2/files/patch-src_avtk_avtk_picojson.hxx
===================================================================
--- head/audio/artyfx-lv2/files/patch-src_avtk_avtk_picojson.hxx
+++ head/audio/artyfx-lv2/files/patch-src_avtk_avtk_picojson.hxx
@@ -1,11 +1,15 @@
---- src/avtk/avtk/picojson.hxx.orig	2018-05-29 06:05:03 UTC
+--- src/avtk/avtk/picojson.hxx.orig	2018-02-25 11:56:24 UTC
 +++ src/avtk/avtk/picojson.hxx
-@@ -204,7 +204,7 @@ inline value::value(double n) : type_(nu
+@@ -204,7 +204,11 @@ inline value::value(double n) : type_(number_type)
  #ifdef _MSC_VER
  	        ! _finite(n)
  #elif __cplusplus>=201103L || !(defined(isnan) && defined(isinf))
 -	        std::isnan(n) || std::isinf(n)
++#ifdef __GNUC__
++		std::isnan(n) || std::isinf(n)
++#else
 +	        isnanf(n) || isinf(n)
++#endif
  #else
  	        isnan(n) || isinf(n)
  #endif
Index: head/audio/artyfx-lv2/files/patch-src_avtk_libs_pffft.cxx
===================================================================
--- head/audio/artyfx-lv2/files/patch-src_avtk_libs_pffft.cxx
+++ head/audio/artyfx-lv2/files/patch-src_avtk_libs_pffft.cxx
@@ -0,0 +1,30 @@
+--- src/avtk/libs/pffft.cxx.orig	2019-07-29 20:43:14 UTC
++++ src/avtk/libs/pffft.cxx
+@@ -98,6 +98,7 @@
+    Altivec support macros
+ */
+ #if !defined(PFFFT_SIMD_DISABLE) && (defined(__ppc__) || defined(__ppc64__))
++#include <altivec.h>
+ typedef vector float v4sf;
+ #  define SIMD_SZ 4
+ #  define VZERO() ((vector float) vec_splat_u8(0))
+@@ -113,8 +114,8 @@ inline v4sf ld_ps1(const float *p)
+ #  define LD_PS1(p) ld_ps1(&p)
+ #  define INTERLEAVE2(in1, in2, out1, out2) { v4sf tmp__ = vec_mergeh(in1, in2); out2 = vec_mergel(in1, in2); out1 = tmp__; }
+ #  define UNINTERLEAVE2(in1, in2, out1, out2) {                           \
+-    vector unsigned char vperm1 =  (vector unsigned char)(0,1,2,3,8,9,10,11,16,17,18,19,24,25,26,27); \
+-    vector unsigned char vperm2 =  (vector unsigned char)(4,5,6,7,12,13,14,15,20,21,22,23,28,29,30,31); \
++    vector unsigned char vperm1 =  (vector unsigned char){0,1,2,3,8,9,10,11,16,17,18,19,24,25,26,27}; \
++    vector unsigned char vperm2 =  (vector unsigned char){4,5,6,7,12,13,14,15,20,21,22,23,28,29,30,31}; \
+     v4sf tmp__ = vec_perm(in1, in2, vperm1); out2 = vec_perm(in1, in2, vperm2); out1 = tmp__; \
+   }
+ #  define VTRANSPOSE4(x0,x1,x2,x3) {              \
+@@ -127,7 +128,7 @@ inline v4sf ld_ps1(const float *p)
+     x2 = vec_mergeh(y1, y3);                    \
+     x3 = vec_mergel(y1, y3);                    \
+   }
+-#  define VSWAPHL(a,b) vec_perm(a,b, (vector unsigned char)(16,17,18,19,20,21,22,23,8,9,10,11,12,13,14,15))
++#  define VSWAPHL(a,b) vec_perm(a,b, (vector unsigned char){16,17,18,19,20,21,22,23,8,9,10,11,12,13,14,15})
+ #  define VALIGNED(ptr) ((((long)(ptr)) & 0xF) == 0)
+ 
+ /*