graphics/openimageio: aarch64 build fix

[I already sent pascal@ a private copy of this.]

graphics/openimageio fails to build on aarch64:
http://build-failures.rhaalovely.net/aarch64/2019-10-04/graphics/openimageio.log

There is an upstream commit that is supposed to fix this...
https://github.com/OpenImageIO/oiio/commit/c4a107aa3480be12253e0f7436a68400fa22d42f
... but it doesn't.

Since the warning looks harmless and we discourage use of -Werror in
general, I suggest to simply disable it for the build.

ok?

Index: Makefile
===================================================================
RCS file: /cvs/ports/graphics/openimageio/Makefile,v
retrieving revision 1.35
diff -u -p -r1.35 Makefile
--- Makefile 12 Jul 2019 20:47:04 -0000 1.35
+++ Makefile 7 Oct 2019 21:19:36 -0000
@@ -10,7 +10,7 @@ GH_PROJECT = oiio
V = 1.8.6
GH_TAGNAME = Release-$V
DISTNAME = openimageio-${V}
-REVISION = 3
+REVISION = 4

SHARED_LIBS += OpenImageIO 5.0 # 1.0
SHARED_LIBS += OpenImageIO_Util 2.0 # 1.5
@@ -53,7 +53,8 @@ LIB_DEPENDS = devel/boost \
graphics/libraw

CONFIGURE_ARGS += -DUSE_OPENCV=OFF \
- -DCMAKE_INSTALL_MANDIR="man/man1"
+ -DCMAKE_INSTALL_MANDIR="man/man1" \
+ -DSTOP_ON_WARNING=OFF

CXXFLAGS += -pthread
.if ${MACHINE_ARCH} == "i386"

--
Christian "naddy" Weisgerber naddy@mips.inka.de