Welcome GCC 8.1, the first release of the GCC 8 series!

https://gcc.gnu.org/gcc-8/changes.html has a comprehensive overview of
many changes in this release and https://gcc.gnu.org/gcc-8/porting_to.html
addresses issues you may encounter porting to this new version.

To provide a brief overview of some of the more noticable changes:

On the optimization front inter-procedural optimizations (IPO) and profile
driven optimizations (PDO) have been further improved and some classic loop
nest optimization passes have been added: -floop-unroll-and-jam performs
outer loop unrolling and fusing of the inner loop copies, while
-floop-interchange exchanges loops in a loop nest to improve data locality.
These, as well as an improved -ftree-loop-distribution pass are enabled by
default at -O3 and above.

A new pragma "GCC unroll" has been implemented in the C family of languages
as well as Fortran to provide finer-grained control over loop unrolling.

DWARF debugging information in the presence of link-time optimization now
properly preserves language-specific information.  The -gcolumn-info
option is now enabled by default, so column information is part of DWARF
debugging information in addition to filenames and line numbers.

The C family compilers have gained options -Wmultistatement-macros
(warning about unsafe macros expanding to multiple statements used
as a body of a statement such as if, else, while, switch, or for),
-Wstringop-truncation (warning for calls to bounded string manipulation
functions such as strncat, strncpy, and stpncpy that might either truncate
the copied string or leave the destination unchanged), -Wcast-function-type
(warning when a function pointer is cast to an incompatible function pointer,
enabled by -Wextra), and -Wsizeof-pointer-div (warning for suspicious
divisions of the size of a pointer by the size of the elements it points
to, which usually is an indication of a mistaken way to calculate the
number of elements in an array, enabled by -Wall), among others.

The existing -Warray-bounds and -Wrestrict options have been enhanced to
detect many more instances, as have -Wformat-overflow and -Wformat-truncation.

Error messages and warnings better highlight the locations of issues in
many cases, and helpful "fix it" hints are provided more often.

The C++ ABI (-fabi-version=12) introduces minor changes in a few fringe
cases.  The GCC 7 ABI can still be selected with -fabi-version=11.

The C++ frontend as well as libstdc++ feature experimental support for
many C++2a features and Fortran has seen a large number of improvements.

Lots and lots of improvements for Arm and AArch64 targets, as well as
the usual dose on x86 and powerpc.

PR:		229681

7 files changed, 314 insertions, 0 deletions

diff --git a/lang/gcc8/Makefile b/lang/gcc8/Makefile
new file mode 100644
index 000000000000..1b5bdcf23144
--- /dev/null
+++ b/lang/gcc8/Makefile
@@ -0,0 +1,143 @@
+# Created by: Gerald Pfeifer <gerald@FreeBSD.org>
+# $FreeBSD$
+
+PORTNAME=	gcc
+PORTVERSION=	8.1.0
+CATEGORIES=	lang
+MASTER_SITES=	GCC
+PKGNAMESUFFIX=	${SUFFIX}
+
+MAINTAINER=	gerald@FreeBSD.org
+COMMENT=	GNU Compiler Collection 8
+
+LICENSE=	GPLv3 GPLv3RLE
+LICENSE_COMB=	multi
+
+ONLY_FOR_ARCHS=	aarch64 amd64 arm armv6 armv7 i386 powerpc powerpc64 powerpcspe sparc64
+
+LIB_DEPENDS=	libgmp.so:math/gmp \
+		libmpfr.so:math/mpfr \
+		libmpc.so:math/mpc
+BUILD_DEPENDS+=	${LOCALBASE}/bin/as:devel/binutils
+RUN_DEPENDS+=	${LOCALBASE}/bin/as:devel/binutils
+
+.if defined(MAINTAINER_MODE)
+BUILD_DEPENDS+=	runtest:misc/dejagnu
+.endif
+
+CONFLICTS=	gcc8-devel-8.*
+
+CPE_VENDOR=	gnu
+
+GCC_VERSION=	${PORTVERSION}
+SUFFIX=		${PORTVERSION:C/([0-9]+).*/\1/}
+USES=		compiler cpe gmake iconv libtool makeinfo perl5 tar:xz
+USE_BINUTILS=	yes
+USE_PERL5=	build
+SSP_UNSAFE=	yes
+
+OPTIONS_DEFINE=		BOOTSTRAP GRAPHITE
+OPTIONS_DEFAULT=	BOOTSTRAP
+BOOTSTRAP_DESC=		Build using a full bootstrap
+GRAPHITE_DESC=		Support for Graphite loop optimizations
+
+.if exists(/usr/lib32/libc.so)
+OPTIONS_DEFINE_powerpc64+=	MULTILIB
+OPTIONS_DEFAULT_powerpc64+=	MULTILIB
+MULTILIB_DESC=		Build support for 32-bit and 64-bit targets
+MULTILIB_CONFIGURE_ENABLE=	multilib
+.else
+CONFIGURE_ARGS+=	--disable-multilib
+.endif
+
+.include <bsd.port.pre.mk>
+
+.if ${ARCH} == amd64
+CONFIGURE_TARGET=	x86_64-portbld-${OPSYS:tl}${OSREL}
+
+.elif ${ARCH} == powerpc64
+CONFIGURE_ENV+=	UNAME_m="powerpc64"
+USE_GCC=	yes
+
+.elif ${ARCH} == powerpcspe
+CONFIGURE_ARGS+=	--with-cpu=8540 --enable-e500_double --without-fp
+.endif
+
+LANGUAGES:=	c,c++,objc,fortran
+TARGLIB=	${PREFIX}/lib/gcc${SUFFIX}
+LIBEXEC=	${PREFIX}/libexec/gcc${SUFFIX}
+GNU_CONFIGURE=	yes
+CONFIGURE_OUTSOURCE=	yes
+.if empty(PORT_OPTIONS:MBOOTSTRAP)
+CONFIGURE_ARGS+=--disable-bootstrap
+.else
+CONFIGURE_ARGS+=--with-build-config=bootstrap-debug
+ALL_TARGET=	bootstrap-lean
+.endif
+INSTALL_TARGET=	install-strip
+.if ${UID} != 0
+BINMODE=	755
+.endif
+CONFIGURE_ARGS+=--disable-nls \
+		--enable-gnu-indirect-function \
+		--libdir=${TARGLIB} \
+		--libexecdir=${LIBEXEC} \
+		--program-suffix=${SUFFIX} \
+		--with-as=${LOCALBASE}/bin/as \
+		--with-gmp=${LOCALBASE} \
+		--with-gxx-include-dir=${TARGLIB}/include/c++/ \
+		--with-ld=${LOCALBASE}/bin/ld \
+		${ICONV_CONFIGURE_ARG} \
+		--with-pkgversion="FreeBSD Ports Collection" \
+		--with-system-zlib
+MAKE_ARGS+=	MAKEINFOFLAGS="--no-split"
+USE_LDCONFIG=	${TARGLIB}
+PLIST_SUB=	GCC_VERSION=${GCC_VERSION} \
+		GNU_HOST=${CONFIGURE_TARGET} \
+		SUFFIX=${SUFFIX}
+INFO=		gcc${SUFFIX}/cpp \
+		gcc${SUFFIX}/cppinternals \
+		gcc${SUFFIX}/gcc \
+		gcc${SUFFIX}/gccinstall \
+		gcc${SUFFIX}/gccint \
+		gcc${SUFFIX}/gfortran \
+		gcc${SUFFIX}/libgomp
+# Release tarballs (as opposed to snapshots) always carry this.
+INFO+=		gcc${SUFFIX}/libquadmath \
+		gcc${SUFFIX}/libitm
+SUB_FILES=	pkg-message
+SUB_LIST+=	TARGLIB=${TARGLIB}
+
+.if ${PORT_OPTIONS:MGRAPHITE}
+LIB_DEPENDS+=	libisl.so:devel/isl
+CONFIGURE_ARGS+=--with-isl=${LOCALBASE}
+.endif
+
+CONFIGURE_ARGS+=--enable-languages=${LANGUAGES}
+
+pre-everything::
+	@${ECHO_MSG} "Making GCC ${PORTVERSION} for ${CONFIGURE_TARGET} [${LANGUAGES}]"
+
+pre-configure:
+	cd ${WRKSRC} ; contrib/gcc_update --touch
+	@${RM} ${WRKSRC}/gcc/*/*.info*
+
+.if defined(MAINTAINER_MODE)
+full-regression-test: build
+	cd ${TEST_WRKSRC}; ${MAKE_CMD} -sk check \
+	; ${WRKSRC}/contrib/test_summary
+.endif
+
+post-stage:
+	${RM} ${STAGEDIR}${PREFIX}/man/man7/*
+	${RM} -r ${STAGEDIR}${TARGLIB}/gcc/*/${GCC_VERSION}/include-fixed/
+	# Add target libraries and include files to packaging list.
+	${RM} ${WRKDIR}/PLIST.lib
+.for d in ${TARGLIB:S/^${PREFIX}\///} ${LIBEXEC:S/^${PREFIX}\///}
+	cd ${STAGEDIR}${PREFIX} ; if [ -d $d ]; then \
+	    ${FIND} $d -type f -o -type l >>${WRKDIR}/PLIST.lib ;\
+	fi
+.endfor
+	cd ${WRKDIR} ; ${SED} -i -e "/PLIST.lib/ r PLIST.lib" ${TMPPLIST}
+
+.include <bsd.port.post.mk>
diff --git a/lang/gcc8/distinfo b/lang/gcc8/distinfo
new file mode 100644
index 000000000000..e58d50b54bb3
--- /dev/null
+++ b/lang/gcc8/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1525606464
+SHA256 (gcc-8.1.0.tar.xz) = 1d1866f992626e61349a1ccd0b8d5253816222cdc13390dcfaa74b093aa2b153
+SIZE (gcc-8.1.0.tar.xz) = 63372320
diff --git a/lang/gcc8/files/patch-arm-unwind-cxx-support b/lang/gcc8/files/patch-arm-unwind-cxx-support
new file mode 100644
index 000000000000..ec6959b9655c
--- /dev/null
+++ b/lang/gcc8/files/patch-arm-unwind-cxx-support
@@ -0,0 +1,106 @@
+--- UTC
+Index: gcc/ginclude/unwind-arm-common.h
+===================================================================
+--- gcc/ginclude/unwind-arm-common.h	(revision 219113)
++++ gcc/ginclude/unwind-arm-common.h	(working copy)
+@@ -82,7 +82,11 @@
+ 
+   struct _Unwind_Control_Block
+     {
++#ifdef __FreeBSD__
++      unsigned exception_class __attribute__((__mode__(__DI__)));
++#else
+       char exception_class[8];
++#endif
+       void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block *);
+       /* Unwinder cache, private fields for the unwinder's use */
+       struct
+@@ -181,7 +185,11 @@
+ 
+   /* Support functions for the PR.  */
+ #define _Unwind_Exception _Unwind_Control_Block
++#ifdef __FreeBSD__
++  typedef unsigned _Unwind_Exception_Class __attribute__((__mode__(__DI__)));
++#else
+   typedef char _Unwind_Exception_Class[8];
++#endif
+ 
+   void * _Unwind_GetLanguageSpecificData (_Unwind_Context *);
+   _Unwind_Ptr _Unwind_GetRegionStart (_Unwind_Context *);
+Index: libstdc++-v3/libsupc++/unwind-cxx.h
+===================================================================
+--- libstdc++-v3/libsupc++/unwind-cxx.h	(revision 219147)
++++ libstdc++-v3/libsupc++/unwind-cxx.h	(working copy)
+@@ -235,7 +235,7 @@
+   return reinterpret_cast<__cxa_dependent_exception *>(exc + 1) - 1;
+ }
+ 
+-#ifdef __ARM_EABI_UNWINDER__
++#if defined(__ARM_EABI_UNWINDER__) && !defined(__FreeBSD__)
+ static inline bool
+ __is_gxx_exception_class(_Unwind_Exception_Class c)
+ {
+@@ -309,13 +309,7 @@
+   c[6] = 'R';
+   c[7] = '\0';
+ }
+-
+-static inline void*
+-__gxx_caught_object(_Unwind_Exception* eo)
+-{
+-  return (void*)eo->barrier_cache.bitpattern[0];
+-}
+-#else // !__ARM_EABI_UNWINDER__
++#else // !__ARM_EABI_UNWINDER__ || __FreeBSD__
+ // This is the primary exception class we report -- "GNUCC++\0".
+ const _Unwind_Exception_Class __gxx_primary_exception_class
+ = ((((((((_Unwind_Exception_Class) 'G' 
+@@ -339,6 +333,16 @@
+     << 8 | (_Unwind_Exception_Class) '+')
+    << 8 | (_Unwind_Exception_Class) '\x01');
+ 
++const _Unwind_Exception_Class __gxx_forced_unwind_class
++= ((((((((_Unwind_Exception_Class) 'G'
++        << 8 | (_Unwind_Exception_Class) 'N')
++       << 8 | (_Unwind_Exception_Class) 'U')
++      << 8 | (_Unwind_Exception_Class) 'C')
++     << 8 | (_Unwind_Exception_Class) 'F')
++    << 8 | (_Unwind_Exception_Class) 'O')
++   << 8 | (_Unwind_Exception_Class) 'R')
++  << 8 | (_Unwind_Exception_Class) '\0');
++
+ static inline bool
+ __is_gxx_exception_class(_Unwind_Exception_Class c)
+ {
+@@ -346,6 +350,12 @@
+       || c == __gxx_dependent_exception_class;
+ }
+ 
++static inline bool
++__is_gxx_forced_unwind_class(_Unwind_Exception_Class c)
++{
++  return c ==  __gxx_forced_unwind_class;
++}
++
+ // Only checks for primary or dependent, but not that it is a C++ exception at
+ // all.
+ static inline bool
+@@ -357,7 +367,18 @@
+ #define __GXX_INIT_PRIMARY_EXCEPTION_CLASS(c) c = __gxx_primary_exception_class
+ #define __GXX_INIT_DEPENDENT_EXCEPTION_CLASS(c) \
+   c = __gxx_dependent_exception_class
++#define __GXX_INIT_FORCED_UNWIND_CLASS(c) c = __gxx_forced_unwind_class 
++#endif // __ARM_EABI_UNWINDER__ && !__FreeBSD__
+ 
++#ifdef __ARM_EABI_UNWINDER__
++static inline void*
++__gxx_caught_object(_Unwind_Exception* eo)
++{
++    return (void*)eo->barrier_cache.bitpattern[0];
++}
++
++#else // !__ARM_EABI_UNWINDER__
++
+ // GNU C++ personality routine, Version 0.
+ extern "C" _Unwind_Reason_Code __gxx_personality_v0
+      (int, _Unwind_Action, _Unwind_Exception_Class,
diff --git a/lang/gcc8/files/patch-spe-config b/lang/gcc8/files/patch-spe-config
new file mode 100644
index 000000000000..16639828cfb4
--- /dev/null
+++ b/lang/gcc8/files/patch-spe-config
@@ -0,0 +1,15 @@
+--- UTC
+Index: gcc/config.gcc
+===================================================================
+--- gcc/config.gcc.old	2017-04-05 17:48:03.045750000 -0500
++++ gcc/config.gcc	2017-04-05 17:49:22.143572000 -0500
+@@ -2383,6 +2383,9 @@
+ 		tmake_file="${tmake_file} rs6000/t-freebsd64"
+ 		extra_options="${extra_options} rs6000/linux64.opt"
+ 		;;
++	    powerpcspe-*)
++		tm_file="${tm_file} powerpcspe/freebsd.h powerpcspe/linuxspe.h powerpcspe/e500.h"
++		;;
+ 	     *)
+ 	        tm_file="${tm_file} rs6000/freebsd.h"
+ 		;;
diff --git a/lang/gcc8/files/pkg-message.in b/lang/gcc8/files/pkg-message.in
new file mode 100644
index 000000000000..433c37a3f89b
--- /dev/null
+++ b/lang/gcc8/files/pkg-message.in
@@ -0,0 +1,7 @@
+To ensure binaries built with this toolchain find appropriate versions
+of the necessary run-time libraries, you may want to link using
+
+  -Wl,-rpath=%%TARGLIB%%
+
+For ports leveraging USE_GCC, USES=compiler, or USES=fortran this happens
+transparently.
diff --git a/lang/gcc8/pkg-descr b/lang/gcc8/pkg-descr
new file mode 100644
index 000000000000..4685f20de855
--- /dev/null
+++ b/lang/gcc8/pkg-descr
@@ -0,0 +1,7 @@
+GCC, the GNU Compiler Collection, supports a number of languages.  This
+port installs the C, C++, and Fortran front ends as gcc8, g++8, gfortran8,
+respectively.
+
+WWW: https://gcc.gnu.org
+
+Gerald Pfeifer <gerald@FreeBSD.org>
diff --git a/lang/gcc8/pkg-plist b/lang/gcc8/pkg-plist
new file mode 100644
index 000000000000..8d302f0800b8
--- /dev/null
+++ b/lang/gcc8/pkg-plist
@@ -0,0 +1,33 @@
+bin/%%GNU_HOST%%-c++%%SUFFIX%%
+bin/%%GNU_HOST%%-g++%%SUFFIX%%
+bin/%%GNU_HOST%%-gcc%%SUFFIX%%
+bin/%%GNU_HOST%%-gcc-%%GCC_VERSION%%
+bin/%%GNU_HOST%%-gcc-ar%%SUFFIX%%
+bin/%%GNU_HOST%%-gcc-nm%%SUFFIX%%
+bin/%%GNU_HOST%%-gcc-ranlib%%SUFFIX%%
+bin/%%GNU_HOST%%-gfortran%%SUFFIX%%
+bin/c++%%SUFFIX%%
+bin/cpp%%SUFFIX%%
+bin/g++%%SUFFIX%%
+bin/gcc%%SUFFIX%%
+bin/gcc-ar%%SUFFIX%%
+bin/gcc-nm%%SUFFIX%%
+bin/gcc-ranlib%%SUFFIX%%
+bin/gcov%%SUFFIX%%
+bin/gcov-dump%%SUFFIX%%
+bin/gcov-tool%%SUFFIX%%
+bin/gfortran%%SUFFIX%%
+man/man1/cpp%%SUFFIX%%.1.gz
+man/man1/g++%%SUFFIX%%.1.gz
+man/man1/gcc%%SUFFIX%%.1.gz
+man/man1/gcov%%SUFFIX%%.1.gz
+man/man1/gcov-dump%%SUFFIX%%.1.gz
+man/man1/gcov-tool%%SUFFIX%%.1.gz
+man/man1/gfortran%%SUFFIX%%.1.gz
+share/gcc-%%GCC_VERSION%%/python/libstdcxx/__init__.py
+share/gcc-%%GCC_VERSION%%/python/libstdcxx/v6/__init__.py
+share/gcc-%%GCC_VERSION%%/python/libstdcxx/v6/printers.py
+share/gcc-%%GCC_VERSION%%/python/libstdcxx/v6/xmethods.py
+@postexec if type ccache-update-links >/dev/null 2>&1; then ccache-update-links -v; fi
+@postunexec if type ccache-update-links >/dev/null 2>&1; then ccache-update-links -v; fi
+@comment Insert PLIST.lib here