Import devel/crc32c

Initially ported to avoid the bundled copy in net/tg_owt, but other ports
can probably pick it up as well.

Feedback OK sthen tb
---
Collection of CRC32C implementations that dispatches to one suitable to
the hardware. CRC32C is the cyclic redundancy check that uses the iSCSI
polynomial specified in RFC 3720.

devel/crc32c/Makefile

@@ -0,0 +1,29 @@
+COMMENT =		CRC32 implementation in hardware
+CATEGORIES =		devel
+
+GH_ACCOUNT =		google
+GH_PROJECT =		crc32c
+GH_TAGNAME =		1.1.2
+
+MAINTAINER =		Klemens Nanni <kn@openbsd.org>
+
+# BSD 3-clause
+PERMIT_PACKAGE =	Yes
+
+SHARED_LIBS +=		crc32c	0.0	# 1.1.0
+
+# C++11
+COMPILER =		base-clang ports-gcc
+
+WANTLIB +=		${COMPILER_LIBCXX} m
+
+MODULES =		devel/cmake
+
+CONFIGURE_ARGS +=	-DBUILD_SHARED_LIBS=ON
+
+# all three expect bundled but nonexistent sources
+CONFIGURE_ARGS +=	-DCRC32C_BUILD_TESTS=OFF \
+			-DCRC32C_BUILD_BENCHMARKS=OFF \
+			-DCRC32C_USE_GLOG=OFF
+
+.include <bsd.port.mk>

devel/crc32c/distinfo

@@ -0,0 +1,2 @@
+SHA256 (crc32c-1.1.2.tar.gz) = rAeEBRMHK3/OvaboIQaKoEiJAY8k4Q5GGBBo+yFNflY=
+SIZE (crc32c-1.1.2.tar.gz) = 29819

devel/crc32c/pkg/DESCR

@@ -0,0 +1,3 @@
+Collection of CRC32C implementations that dispatches to one suitable to
+the hardware. CRC32C is the cyclic redundancy check that uses the iSCSI
+polynomial specified in RFC 3720.

devel/crc32c/pkg/PLIST

@@ -0,0 +1,9 @@
+include/crc32c/
+include/crc32c/crc32c.h
+lib/cmake/
+lib/cmake/Crc32c/
+lib/cmake/Crc32c/Crc32cConfig.cmake
+lib/cmake/Crc32c/Crc32cConfigVersion.cmake
+lib/cmake/Crc32c/Crc32cTargets${MODCMAKE_BUILD_SUFFIX}
+lib/cmake/Crc32c/Crc32cTargets.cmake
+@lib lib/libcrc32c.so.${LIBcrc32c_VERSION}