diff --git a/devel/libclc/Makefile b/devel/libclc/Makefile
index 28550447298e..10ad70899bf7 100644
--- a/devel/libclc/Makefile
+++ b/devel/libclc/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	libclc
-DISTVERSION=	0.3.0.20170927
+DISTVERSION=	0.3.0.20171127
 CATEGORIES=	devel
 
 MAINTAINER=	x11@FreeBSD.org
@@ -17,14 +17,14 @@ BUILD_DEPENDS=	llvm${LLVMVER}>=4.0:devel/llvm${LLVMVER} \
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	llvm-mirror
-GH_TAGNAME=	81f74b2
+GH_TAGNAME=	d638441
 
 # ninja based build is broken since commit 598792bc (16 sep 2016)
 USES=		gmake python:2.7,build gmake
 USE_LDCONFIG=	yes
 MAKE_ENV=	MAKE=${GMAKE} DESTDIR=${STAGEDIR}
 
-LLVMVER=	${MESA_LLVM_VER:U40}
+LLVMVER=	${MESA_LLVM_VER:U50}
 
 ALL_TARGET=
 
diff --git a/devel/libclc/distinfo b/devel/libclc/distinfo
index 454649f6da50..28357cd0683c 100644
--- a/devel/libclc/distinfo
+++ b/devel/libclc/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1506535396
-SHA256 (llvm-mirror-libclc-0.3.0.20170927-81f74b2_GH0.tar.gz) = d1436fda242d19d3d19f05a4068fa6310cbfe0f523c2fcd567b83be1f00db89a
-SIZE (llvm-mirror-libclc-0.3.0.20170927-81f74b2_GH0.tar.gz) = 137560
+TIMESTAMP = 1514209095
+SHA256 (llvm-mirror-libclc-0.3.0.20171127-d638441_GH0.tar.gz) = 1873176836da9d45e85b1a7a180f4b9f6d4a61e98be4c5c7d32eabca9c88c88b
+SIZE (llvm-mirror-libclc-0.3.0.20171127-d638441_GH0.tar.gz) = 138007
diff --git a/devel/libclc/files/patch-configure.py b/devel/libclc/files/patch-configure.py
index 077d1c2a5cf9..a35e7e092469 100644
--- a/devel/libclc/files/patch-configure.py
+++ b/devel/libclc/files/patch-configure.py
@@ -1,12 +1,23 @@
+Fix use of execinfo from llvm-config --system-libs
+
 The LLVM_TOOL_LINK builds a helper tool named utils/prepare-builtins that
 requires libedit which in turn pulls in libtinfo (part of libncurses).
 In order to support builds on platforms without base ncurses (e.g. DF),
 require base libedit.  This requires an additional -L LDFLAGS to search
 ${LOCALBASE}/lib for the needed libs.  (prepare-builtins is not installed)
 
---- configure.py.orig	2015-07-10 13:37:04 UTC
+--- configure.py.orig	2017-11-27 11:14:06 UTC
 +++ configure.py
-@@ -118,7 +118,8 @@ b.rule("OPT", command = llvm_opt + " -O3
+@@ -76,7 +76,7 @@ if llvm_int_version < 390:
+     print("libclc requires LLVM >= 3.9")
+     sys.exit(1)
+ 
+-llvm_system_libs = llvm_config(['--system-libs'])
++llvm_system_libs = (llvm_config(['--system-libs'])).replace("-l/usr/lib/libexecinfo.so","-lexecinfo")
+ llvm_bindir = llvm_config(['--bindir'])
+ llvm_core_libs = llvm_config(['--libs', 'core', 'bitreader', 'bitwriter']) + ' ' + \
+                  llvm_system_libs + ' ' + \
+@@ -131,7 +131,8 @@ b = metabuild.from_name(options.g)
         description = 'OPT $out')
  
  c_compiler_rule(b, "LLVM_TOOL_CXX", 'CXX', cxx_compiler, llvm_cxxflags)
@@ -16,7 +27,7 @@ ${LOCALBASE}/lib for the needed libs.  (prepare-builtins is not installed)
  
  prepare_builtins = os.path.join('utils', 'prepare-builtins')
  b.build(os.path.join('utils', 'prepare-builtins.o'), "LLVM_TOOL_CXX",
-@@ -264,7 +265,7 @@ install_cmd = ' && '.join(['mkdir -p ${D
+@@ -290,7 +291,7 @@ install_cmd = ' && '.join(['mkdir -p ${D
                             {'src': file,
                              'dst': libexecdir}
                             for (file, dest) in install_files_bc])
diff --git a/devel/libclc/pkg-plist b/devel/libclc/pkg-plist
index 84d1af1175f4..6fa283c5892e 100644
--- a/devel/libclc/pkg-plist
+++ b/devel/libclc/pkg-plist
@@ -120,47 +120,33 @@ include/clc/integer/sub_sat.inc
 include/clc/integer/unary_intrin.inc
 include/clc/integer/upsample.h
 include/clc/math/acos.h
-include/clc/math/acos.inc
 include/clc/math/acosh.h
-include/clc/math/acosh.inc
 include/clc/math/acospi.h
-include/clc/math/acospi.inc
 include/clc/math/asin.h
-include/clc/math/asin.inc
 include/clc/math/asinh.h
-include/clc/math/asinh.inc
 include/clc/math/asinpi.h
-include/clc/math/asinpi.inc
 include/clc/math/atan.h
-include/clc/math/atan.inc
 include/clc/math/atan2.h
 include/clc/math/atan2.inc
 include/clc/math/atan2pi.h
 include/clc/math/atan2pi.inc
 include/clc/math/atanh.h
-include/clc/math/atanh.inc
 include/clc/math/atanpi.h
-include/clc/math/atanpi.inc
 include/clc/math/binary_decl.inc
+include/clc/math/binary_decl_tt.inc
 include/clc/math/binary_intrin.inc
 include/clc/math/cbrt.h
-include/clc/math/cbrt.inc
 include/clc/math/ceil.h
-include/clc/math/clc_nextafter.h
 include/clc/math/copysign.h
 include/clc/math/copysign.inc
 include/clc/math/cos.h
-include/clc/math/cos.inc
 include/clc/math/cosh.h
-include/clc/math/cosh.inc
 include/clc/math/cospi.h
-include/clc/math/cospi.inc
 include/clc/math/erf.h
 include/clc/math/erfc.h
 include/clc/math/exp.h
 include/clc/math/exp10.h
 include/clc/math/exp2.h
-include/clc/math/exp2.inc
 include/clc/math/expm1.h
 include/clc/math/fabs.h
 include/clc/math/fdim.h
@@ -185,20 +171,17 @@ include/clc/math/ilogb.inc
 include/clc/math/ldexp.h
 include/clc/math/ldexp.inc
 include/clc/math/lgamma.h
-include/clc/math/lgamma.inc
 include/clc/math/lgamma_r.h
 include/clc/math/lgamma_r.inc
 include/clc/math/log.h
-include/clc/math/log.inc
 include/clc/math/log10.h
 include/clc/math/log1p.h
-include/clc/math/log1p.inc
 include/clc/math/log2.h
-include/clc/math/log2.inc
 include/clc/math/logb.h
-include/clc/math/logb.inc
 include/clc/math/mad.h
 include/clc/math/mad.inc
+include/clc/math/maxmag.h
+include/clc/math/minmag.h
 include/clc/math/modf.h
 include/clc/math/modf.inc
 include/clc/math/native_cos.h
@@ -207,9 +190,8 @@ include/clc/math/native_exp.h
 include/clc/math/native_exp10.h
 include/clc/math/native_exp2.h
 include/clc/math/native_log.h
-include/clc/math/native_log.inc
+include/clc/math/native_log10.h
 include/clc/math/native_log2.h
-include/clc/math/native_log2.inc
 include/clc/math/native_powr.h
 include/clc/math/native_recip.h
 include/clc/math/native_rsqrt.h
@@ -217,28 +199,22 @@ include/clc/math/native_sin.h
 include/clc/math/native_sqrt.h
 include/clc/math/native_tan.h
 include/clc/math/nextafter.h
+include/clc/math/nextafter.inc
 include/clc/math/pow.h
 include/clc/math/pown.h
 include/clc/math/rint.h
 include/clc/math/round.h
 include/clc/math/rsqrt.h
 include/clc/math/sin.h
-include/clc/math/sin.inc
 include/clc/math/sincos.h
 include/clc/math/sincos.inc
 include/clc/math/sinh.h
-include/clc/math/sinh.inc
 include/clc/math/sinpi.h
-include/clc/math/sinpi.inc
 include/clc/math/sqrt.h
-include/clc/math/sqrt.inc
 include/clc/math/tan.h
-include/clc/math/tan.inc
 include/clc/math/tanh.h
-include/clc/math/tanh.inc
 include/clc/math/ternary_intrin.inc
 include/clc/math/tgamma.h
-include/clc/math/tgamma.inc
 include/clc/math/trunc.h
 include/clc/math/unary_decl.inc
 include/clc/math/unary_intrin.inc
@@ -300,6 +276,9 @@ lib/clc/cypress-r600--.bc
 lib/clc/fiji-amdgcn--.bc
 lib/clc/fiji-amdgcn--amdhsa.bc
 lib/clc/fiji-amdgcn-mesa-mesa3d.bc
+lib/clc/gfx900-amdgcn--.bc
+lib/clc/gfx900-amdgcn--amdhsa.bc
+lib/clc/gfx900-amdgcn-mesa-mesa3d.bc
 lib/clc/hainan-amdgcn--.bc
 lib/clc/hainan-amdgcn-mesa-mesa3d.bc
 lib/clc/hawaii-amdgcn--.bc