diff --git a/devel/gdb/Makefile b/devel/gdb/Makefile
index 571e3b460996..66ae1ce8316a 100644
--- a/devel/gdb/Makefile
+++ b/devel/gdb/Makefile
@@ -1,180 +1,189 @@
 # Created by: Steven Kreuzer <skreuzer@FreeBSD.org>
 
 PORTNAME=	gdb
 DISTVERSION=	11.2
 PORTREVISION=	0
 CATEGORIES=	devel
 MASTER_SITES=	GNU
 
 MAINTAINER=	pizzamig@FreeBSD.org
 COMMENT=	GNU Project Debugger
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING3
 
 # untested on sparc64, might work
 NOT_FOR_ARCHS=	sparc64
 
 LIB_DEPENDS=	libgmp.so:math/gmp \
 		libmpfr.so:math/mpfr
 TEST_DEPENDS=	runtest:misc/dejagnu
 
 USES=		compiler:c++11-lang cpe gmake libtool makeinfo pkgconfig tar:xz
 USE_PYTHON=	flavors py3kplist
 
 TEST_TARGET=	check
 
 CPE_VENDOR=	gnu
 GNU_CONFIGURE=	yes
 CONFIGURE_ENV=	CONFIGURED_M4=m4 CONFIGURED_BISON=byacc
 CONFIGURE_ARGS=	--program-suffix=${DISTVERSION:S/.//g} \
 		--enable-targets=all --enable-64-bit-bfd \
 		--with-separate-debug-dir=/usr/lib/debug \
 		${ICONV_CONFIGURE_ARG} \
 		--with-expat=yes --with-libexpat-prefix=${LOCALBASE} \
 		--without-libunwind-ia64 --with-system-zlib
 CONFIGURE_OUTSOURCE=	yes
 CFLAGS:=	${CFLAGS:C/ +$//}	# blanks at EOL creep in sometimes
 CFLAGS+=	-DRL_NO_COMPAT
 EXCLUDE=	dejagnu expect sim texinfo intl
 EXTRACT_AFTER_ARGS=	${EXCLUDE:S/^/--exclude /}
 LIB_DEPENDS+=	libexpat.so:textproc/expat2
 
 VER=		${DISTVERSION:S/.//g}
 PLIST_SUB=	VER=${VER}
 
 OPTIONS_DEFINE=	DEBUG GDB_LINK GUILE KGDB NLS PYTHON SOURCE_HIGHLIGHT TUI
 
 OPTIONS_DEFAULT=	GDB_LINK KGDB NLS PYTHON SOURCE_HIGHLIGHT TUI
 OPTIONS_DEFAULT+=	PORT_READLINE PORT_ICONV SYSTEM_ZLIB
 
 OPTIONS_SINGLE=	READLINE ICONV ZLIB
 OPTIONS_SINGLE_READLINE=	BUNDLED_READLINE PORT_READLINE
 OPTIONS_SINGLE_ICONV=	PORT_ICONV SYSTEM_ICONV
 OPTIONS_SINGLE_ZLIB=	BUNDLED_ZLIB SYSTEM_ZLIB
 
 GDB_LINK_DESC=		Create ${PREFIX}/bin/gdb symlink
 KGDB_DESC=		Kernel Debugging Support
 BUNDLED_READLINE_DESC=	from gdb distfile
 BUNDLED_ZLIB_DESC=	from gdb distfile
 PORT_READLINE_DESC=	from devel/readline port
 PORT_ICONV_DESC=	use libiconv, with wider charset support
 SOURCE_HIGHLIGHT_DESC=	Source Code Styling
 SYSTEM_ICONV_DESC=	use libc iconv, with no wchar support
 SYSTEM_ZLIB_DESC=	use system zlib
 TUI_DESC=		Text User Interface enabled
 
 OPTIONS_SUB=	yes
 
 BUNDLED_READLINE_CONFIGURE_OFF=	--with-system-readline
 DEBUG_CFLAGS=		-g
 DEBUG_VARS=	STRIP=
 GUILE_CONFIGURE_WITH=	guile
 GUILE_LIB_DEPENDS=	libguile-2.2.so:lang/guile2
 NLS_USES=	gettext-runtime
 PORT_READLINE_USES=	readline
 PORT_ICONV_USES=	iconv:wchar_t
 PYTHON_CONFIGURE_ON=	--with-python=${PYTHON_CMD}
 PYTHON_CONFIGURE_OFF=	--without-python
 PYTHON_USES=		python:3.6+
 SOURCE_HIGHLIGHT_WITH=	source-highlight
 SOURCE_HIGHLIGHT_LIB_DEPENDS=	\
 	libsource-highlight.so:textproc/source-highlight
 SYSTEM_ICONV_USES=	iconv
 SYSTEM_ZLIB_WITH=	system-zlib
 TUI_CONFIGURE_ENABLE=	tui
 
 .include <bsd.port.pre.mk>
 
 .if ${PORT_OPTIONS:MPYTHON}
 .if ${PYTHON_VER} != ${PYTHON_DEFAULT}
 PKGNAMESUFFIX=	${PYTHON_PKGNAMESUFFIX}
 .endif
 .endif
 
-.if ${PORT_OPTIONS:MPYTHON} && exists(/usr/lib/libc++.so.1)
+.if ${PORT_OPTIONS:MPYTHON} && \
+    (exists(/usr/lib/libc++.so.1) || exists(/lib/libc++.so.1))
 USE_GITHUB=	nodefault
 
 GH_ACCOUNT=	bsdjhb:libcxx
 GH_PROJECT=	libcxx-gdbpy:libcxx
 GH_TAGNAME=	03d0d9b:libcxx
 
 # Workaround USE_GITHUB preventing the default DISTFILES
 DISTFILES=	${DISTNAME}${EXTRACT_SUFX}
 
+.if exists(/usr/lib/libc++.so.1)
+LIBCXX_DIR=	/usr/lib
+.else
+LIBCXX_DIR=	/lib
+.endif
+
+PLIST_SUB+=	LIBCXX_DIR="${LIBCXX_DIR}"
 PLIST_SUB+=	LIBCXX=""
 .else
 PLIST_SUB+=	LIBCXX="@comment "
 .endif
 
 .if ! ${PORT_OPTIONS:MBUNDLED_ZLIB}
 EXCLUDE+=	zlib
 .endif
 
 .if ${ARCH} == amd64
 CONFIGURE_TARGET=	x86_64-portbld-freebsd${OSREL}
 .endif
 
 .if ${CHOSEN_COMPILER_TYPE} == clang
 CFLAGS+=	-Wno-extended-offsetof
 .endif
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|$$| [GDB v${DISTVERSION} for FreeBSD]|' \
 		${WRKSRC}/gdb/version.in
 
 post-patch-KGDB-on:
 	@${CP} -r ${FILESDIR}/kgdb/*.[ch] ${WRKSRC}/gdb/
 	@${PATCH} -d ${PATCH_WRKSRC} ${PATCH_ARGS} < ${FILESDIR}/extrapatch-kgdb
 
 do-install:
 	${INSTALL_PROGRAM} ${INSTALL_WRKSRC}/gdb/gdb \
 		${STAGEDIR}${PREFIX}/bin/gdb${VER}
 	${INSTALL_MAN} ${WRKSRC}/gdb/doc/gdb.1 \
 		${STAGEDIR}${MAN1PREFIX}/man/man1/gdb${VER}.1
 	(cd ${INSTALL_WRKSRC}/gdb/data-directory ; \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} install-syscalls )
 
 do-install-KGDB-on:
 	${INSTALL_PROGRAM} ${INSTALL_WRKSRC}/gdb/kgdb \
 		${STAGEDIR}${PREFIX}/bin/kgdb${VER}
 	${INSTALL_MAN} ${FILESDIR}/kgdb/kgdb.1 \
 		${STAGEDIR}${MAN1PREFIX}/man/man1/kgdb${VER}.1
 
 do-install-TUI-on:
 	${LN} -sf gdb${VER} ${STAGEDIR}${PREFIX}/bin/gdbtui${VER}
 
 do-install-GDB_LINK-on:
 	${LN} -sf gdb${VER} ${STAGEDIR}${PREFIX}/bin/gdb
 	${LN} -sf gdb${VER}.1 ${STAGEDIR}${MAN1PREFIX}/man/man1/gdb.1
 .if ${PORT_OPTIONS:MKGDB}
 	${LN} -sf kgdb${VER} ${STAGEDIR}${PREFIX}/bin/kgdb
 	${LN} -sf kgdb${VER}.1 ${STAGEDIR}${MAN1PREFIX}/man/man1/kgdb.1
 .endif
 
 do-install-PYTHON-on:
 	(cd ${INSTALL_WRKSRC}/gdb ; \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} install-python )
 	(cd ${INSTALL_WRKSRC}/gdb/data-directory ; \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} install-python )
 	@(cd ${STAGEDIR}${PREFIX}/share/gdb/python && \
 		${PYTHON_CMD} -m compileall .)
 . for f in gdb gdb/command gdb/function gdb/printer
 	@(cd ${STAGEDIR}${PREFIX}/share/gdb/python/${f} ; ${CHMOD} 644 *.py* )
 . endfor
-.if exists(/usr/lib/libc++.so.1)
+.if exists(/usr/lib/libc++.so.1) || exists(/lib/libc++.so.1)
 	@(cd ${WRKSRC_libcxx} ; \
-		${SETENV} ${MAKE_ENV} ${MAKE} ${MAKE_ARGS} install )
-	@(cd ${STAGEDIR}${PREFIX}/share/gdb/auto-load/usr/lib && \
+		${SETENV} ${MAKE_ENV} ${MAKE} ${MAKE_ARGS} \
+		    LIBCXX_DIR="${LIBCXX_DIR}" install )
+	@(cd ${STAGEDIR}${PREFIX}/share/gdb/auto-load/${LIBCXX_DIR} && \
 		${PYTHON_CMD} -m compileall .)
 	@(cd ${STAGEDIR}${PREFIX}/share/libcxx-gdbpy/libcxx && \
 		${PYTHON_CMD} -m compileall .)
 .endif
 
 do-install-GUILE-on:
 	(cd ${INSTALL_WRKSRC}/gdb ; \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} install-guile )
 	(cd ${INSTALL_WRKSRC}/gdb/data-directory ; \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} install-guile )
 
 .include <bsd.port.post.mk>
diff --git a/devel/gdb/pkg-plist b/devel/gdb/pkg-plist
index 653d280c5b1a..4efe03c46e1a 100644
--- a/devel/gdb/pkg-plist
+++ b/devel/gdb/pkg-plist
@@ -1,93 +1,93 @@
 %%GDB_LINK%%bin/gdb
 %%GDB_LINK%%%%KGDB%%bin/kgdb
 bin/gdb%%VER%%
 %%TUI%%bin/gdbtui%%VER%%
 %%KGDB%%bin/kgdb%%VER%%
 %%GDB_LINK%%man/man1/gdb.1.gz
 man/man1/gdb%%VER%%.1.gz
 %%GDB_LINK%%%%KGDB%%man/man1/kgdb.1.gz
 %%KGDB%%man/man1/kgdb%%VER%%.1.gz
-%%LIBCXX%%%%DATADIR%%/auto-load/usr/lib/libc++.so.1-gdb.py
-%%LIBCXX%%%%DATADIR%%/auto-load/usr/lib/libc++.so.1-gdb.pyc
+%%LIBCXX%%%%DATADIR%%/auto-load%%LIBCXX_DIR%%/libc++.so.1-gdb.py
+%%LIBCXX%%%%DATADIR%%/auto-load%%LIBCXX_DIR%%/libc++.so.1-gdb.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/__init__.py
 %%PYTHON%%%%DATADIR%%/python/gdb/__init__.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/FrameDecorator.py
 %%PYTHON%%%%DATADIR%%/python/gdb/FrameDecorator.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/FrameIterator.py
 %%PYTHON%%%%DATADIR%%/python/gdb/FrameIterator.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/frames.py
 %%PYTHON%%%%DATADIR%%/python/gdb/frames.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/printing.py
 %%PYTHON%%%%DATADIR%%/python/gdb/prompt.py
 %%PYTHON%%%%DATADIR%%/python/gdb/prompt.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/printing.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/types.py
 %%PYTHON%%%%DATADIR%%/python/gdb/types.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/unwinder.py
 %%PYTHON%%%%DATADIR%%/python/gdb/unwinder.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/xmethod.py
 %%PYTHON%%%%DATADIR%%/python/gdb/xmethod.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/__init__.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/__init__.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/explore.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/explore.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/frame_filters.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/frame_filters.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/pretty_printers.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/pretty_printers.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/prompt.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/prompt.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/type_printers.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/type_printers.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/unwinders.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/unwinders.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/command/xmethods.py
 %%PYTHON%%%%DATADIR%%/python/gdb/command/xmethods.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/function/__init__.py
 %%PYTHON%%%%DATADIR%%/python/gdb/function/__init__.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/function/as_string.py
 %%PYTHON%%%%DATADIR%%/python/gdb/function/as_string.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/function/caller_is.py
 %%PYTHON%%%%DATADIR%%/python/gdb/function/caller_is.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/function/strfns.py
 %%PYTHON%%%%DATADIR%%/python/gdb/function/strfns.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/printer/__init__.py
 %%PYTHON%%%%DATADIR%%/python/gdb/printer/__init__.pyc
 %%PYTHON%%%%DATADIR%%/python/gdb/printer/bound_registers.py
 %%PYTHON%%%%DATADIR%%/python/gdb/printer/bound_registers.pyc
 %%GUILE%%%%DATADIR%%/guile/gdb.go
 %%GUILE%%%%DATADIR%%/guile/gdb.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/boot.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/experimental.go
 %%GUILE%%%%DATADIR%%/guile/gdb/experimental.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/init.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/iterator.go
 %%GUILE%%%%DATADIR%%/guile/gdb/iterator.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/printing.go
 %%GUILE%%%%DATADIR%%/guile/gdb/printing.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/support.go
 %%GUILE%%%%DATADIR%%/guile/gdb/support.scm
 %%GUILE%%%%DATADIR%%/guile/gdb/types.go
 %%GUILE%%%%DATADIR%%/guile/gdb/types.scm
 %%DATADIR%%/syscalls/aarch64-linux.xml
 %%DATADIR%%/syscalls/amd64-linux.xml
 %%DATADIR%%/syscalls/arm-linux.xml
 %%DATADIR%%/syscalls/freebsd.xml
 %%DATADIR%%/syscalls/gdb-syscalls.dtd
 %%DATADIR%%/syscalls/i386-linux.xml
 %%DATADIR%%/syscalls/mips-n32-linux.xml
 %%DATADIR%%/syscalls/mips-n64-linux.xml
 %%DATADIR%%/syscalls/mips-o32-linux.xml
 %%DATADIR%%/syscalls/netbsd.xml
 %%DATADIR%%/syscalls/ppc-linux.xml
 %%DATADIR%%/syscalls/ppc64-linux.xml
 %%DATADIR%%/syscalls/s390-linux.xml
 %%DATADIR%%/syscalls/s390x-linux.xml
 %%DATADIR%%/syscalls/sparc-linux.xml
 %%DATADIR%%/syscalls/sparc64-linux.xml
 %%LIBCXX%%share/libcxx-gdbpy/libcxx/__init__.py
 %%LIBCXX%%share/libcxx-gdbpy/libcxx/__init__.pyc
 %%LIBCXX%%share/libcxx-gdbpy/libcxx/printers.py
 %%LIBCXX%%share/libcxx-gdbpy/libcxx/printers.pyc
 %%LIBCXX%%share/libcxx-gdbpy/libcxx/xmethods.py
 %%LIBCXX%%share/libcxx-gdbpy/libcxx/xmethods.pyc