When I attempted an amd64-gcc variant build of my normal clang based amd64 build the following pair of errors resulted during buildkernel: --- all_subdir_drm2/i915kms --- In file included from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/intel_drv.h:31:0, from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/dvo.h:35, from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/dvo_ivch.c:31: /usr/src/sys/dev/drm2/i915/i915_drv.h:1621:6: error: redundant redeclaration of 'i915_gem_dump_object' [-Werror=redundant-decls] void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len, ^ /usr/src/sys/dev/drm2/i915/i915_drv.h:1612:6: note: previous declaration of 'i915_gem_dump_object' was here void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len, ^ In file included from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/dvo.h:35:0, from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/dvo_ivch.c:31: /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/intel_drv.h:671:13: error: redundant redeclaration of 'intel_fbc_enabled' [-Werror=redundant-decls] extern bool intel_fbc_enabled(struct drm_device *dev); ^ In file included from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/intel_drv.h:31:0, from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/dvo.h:35, from /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/dvo_ivch.c:31: /usr/src/sys/dev/drm2/i915/i915_drv.h:1676:13: note: previous declaration of 'intel_fbc_enabled' was here extern bool intel_fbc_enabled(struct drm_device *dev); ^ cc1: all warnings being treated as errors *** [dvo_ivch.o] Error code 1 make[5]: stopped in /usr/src/sys/modules/drm2/i915kms .ERROR_TARGET='dvo_ivch.o' .ERROR_META_FILE='/usr/obj/xtoolchain/amd64.amd64/usr/src/sys/GENERIC-NODEBUG/modules/usr/src/sys/modules/drm2/i915kms/dvo_ivch.o.meta' .MAKE.LEVEL='5' MAKEFILE='' .MAKE.MODE='meta missing-filemon=yes missing-meta=yes silent=yes verbose' .CURDIR='/usr/src/sys/modules/drm2/i915kms' .MAKE='make' .OBJDIR='/usr/obj/xtoolchain/amd64.amd64/usr/src/sys/GENERIC-NODEBUG/modules/usr/src/sys/modules/drm2/i915kms' .TARGETS='all' DESTDIR='' LD_LIBRARY_PATH='' MACHINE='amd64' MACHINE_ARCH='amd64' MAKEOBJDIRPREFIX='/usr/obj/xtoolchain/amd64.amd64/usr/src/sys/GENERIC-NODEBUG/modules' MAKESYSPATH='/usr/src/share/mk' MAKE_VERSION='20160606' PATH='/usr/obj/xtoolchain/amd64.amd64/usr/src/tmp/legacy/usr/sbin:/usr/obj/xtoolchain/amd64.amd64/usr/src/tmp/legacy/usr/bin:/usr/obj/xtoolchain/amd64.amd64/usr/src/tmp/legacy/bin:/usr/obj/xtoolchain/amd64.amd64/usr/src/tmp/usr/sbin:/usr/obj/xtoolchain/amd64.amd64/usr/src/tmp/usr/bin:/sbin:/bin:/usr/sbin:/usr/bin' SRCTOP='/usr/src' OBJTOP='/usr/obj/xtoolchain/amd64.amd64/usr/src/sys/GENERIC-NODEBUG/modules/usr/src' .MAKE.MAKEFILES='/usr/src/share/mk/sys.mk /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk /root/src.configs/src.conf.amd64-xtoolchain.amd64-host /usr/src/share/mk/bsd.mkopt.mk /root/src.configs/make.conf /usr/src/share/mk/local.sys.mk /usr/src/share/mk/src.sys.mk /etc/src.conf /usr/src/sys/modules/drm2/i915kms/Makefile /usr/src/share/mk/bsd.kmod.mk /usr/src/sys/conf/kmod.mk /usr/src/share/mk/bsd.init.mk /usr/src/share/mk/bsd.opts.mk /usr/src/share/mk/bsd.cpu.mk /usr/src/share/mk/local.init.mk /usr/src/share/mk/src.init.mk /usr/src/sys/modules/drm2/i915kms/../Makefile.inc /usr/src/sys/modules/drm2/i915kms/../../Makefile.inc /usr/src/share/mk/bsd.own.mk /usr/src/share/mk/bsd.compiler.mk /usr/src/sys/conf/kern.opts.mk /usr/src/sys/conf/config.mk /usr/src/share/mk/bsd.links.mk /usr/src/share/mk/bsd.dep.mk /usr/src/share/mk/bsd.clang-analyze.mk /usr/src/share/mk/bsd.obj.mk /usr/src/share/mk/bsd.subdir.mk /usr/src/sys/conf/kern.mk' .PATH='. /usr/src/sys/modules/drm2/i915kms /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915 /usr/obj/xtoolchain/amd64.amd64/usr/src/sys/GENERIC-NODEBUG' 2 errors The context for this is as follows. # more ~/sys_build_scripts.amd64-host/make_amd64_nodebug_incl_clang_xtoolchain-amd64-host.sh kldload -n filemon && \ script ~/sys_typescripts/typescript_make_amd64_nodebug_incl_clang_xtoolchain-amd64-host-$(date +%Y-%m-%d:%H:%M:%S) \ env __MAKE_CONF="/root/src.configs/make.conf" SRC_ENV_CONF="/root/src.configs/src.conf.amd64-xtoolchain.amd64-host" \ WITH_META_MODE=yes \ MAKEOBJDIRPREFIX="/usr/obj/xtoolchain/amd64.amd64" \ make $* # more ~/src.configs/src.conf.amd64-xtoolchain.amd64-host TO_TYPE=amd64 TOOLS_TO_TYPE=x86_64 VERSION_CONTEXT=11.0 # KERNCONF=GENERIC-NODEBUG TARGET=${TO_TYPE} .if ${.MAKE.LEVEL} == 0 TARGET_ARCH=${TO_TYPE} .export TARGET_ARCH .endif # WITHOUT_CROSS_COMPILER= WITHOUT_SYSTEM_COMPILER= # WITH_LIBCPLUSPLUS= WITHOUT_BINUTILS_BOOTSTRAP= WITHOUT_CLANG_BOOTSTRAP= WITH_CLANG= WITH_CLANG_IS_CC= WITH_CLANG_FULL= WITH_CLANG_EXTRAS= WITH_LLDB= #PORTS_MODULES=emulators/virtualbox-ose-additions # #WITH_BOOT= for amd64-xtoolschain-gcc/amd64-gcc gets (last I tried)... # --- all_subdir_sys --- # -994 bytes available # *** [boot2] Error code 1 WITHOUT_BOOT= WITH_LIB32= # WITHOUT_ELFTOOLCHAIN_BOOTSTRAP= WITHOUT_GCC_BOOTSTRAP= WITHOUT_GCC= WITHOUT_GCC_IS_CC= WITHOUT_GNUCXX= # NO_WERROR= #WERROR= MALLOC_PRODUCTION= # WITH_DEBUG_FILES= # # # For TO (so-called "cross") stages . . . # So-called-cross via ${TO_TYPE}-xtoolchain-gcc/${TO_TYPE}-gcc. . . # TOOLS_TO_TYPE based on ${TO_TYPE}-xtoolchain-gcc related binutils. . . # CROSS_TOOLCHAIN=${TO_TYPE}-gcc X_COMPILER_TYPE=gcc CROSS_BINUTILS_PREFIX=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ .if ${.MAKE.LEVEL} == 0 XCC=/usr/local/bin/${TOOLS_TO_TYPE}-portbld-freebsd${VERSION_CONTEXT}-gcc XCXX=/usr/local/bin/${TOOLS_TO_TYPE}-portbld-freebsd${VERSION_CONTEXT}-g++ XCPP=/usr/local/bin/${TOOLS_TO_TYPE}-portbld-freebsd${VERSION_CONTEXT}-cpp .export XCC .export XCXX .export XCPP XAS=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/as XAR=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ar XLD=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ld XNM=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/nm XOBJCOPY=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/objcopy XOBJDUMP=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/objdump XRANLIB=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ranlib XSIZE=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/size #NO-SUCH: XSTRINGS=/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/strings XSTRINGS=/usr/local/bin/${TOOLS_TO_TYPE}-freebsd-strings .export XAS .export XAR .export XLD .export XNM .export XOBJCOPY .export XOBJDUMP .export XRANLIB .export XSIZE .export XSTRINGS .endif # # # From based on clang (via system). . . # .if ${.MAKE.LEVEL} == 0 CC=/usr/bin/clang CXX=/usr/bin/clang++ CPP=/usr/bin/clang-cpp .export CC .export CXX .export CPP .endif /root/src.configs/make.conf being empty. # svnlite info /usr/src/ Path: . Working Copy Root Path: /usr/src URL: svn://svn.freebsd.org/base/stable/11 Relative URL: ^/stable/11 Repository Root: svn://svn.freebsd.org/base Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f Revision: 302457 Node Kind: directory Schedule: normal Last Changed Author: bdrewery Last Changed Rev: 302457 Last Changed Date: 2016-07-08 14:19:48 -0700 (Fri, 08 Jul 2016)
(In reply to Mark Millard from comment #0) It turns out that I tested an environment with work arounds for two other examples of redundant declarations stopping the builds: # svnlite diff /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c Index: /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c =================================================================== --- /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c (revision 302457) +++ /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c (working copy) @@ -923,7 +923,7 @@ } /* XXX */ -extern void tcp_dooptions(struct tcpopt *, u_char *, int, int); +//extern void tcp_dooptions(struct tcpopt *, u_char *, int, int); int t3_syncache_respond(struct toedev *tod, void *arg, struct mbuf *m) # svnlite diff /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c Index: /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c =================================================================== --- /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c (revision 302457) +++ /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c (working copy) @@ -923,7 +923,7 @@ } /* XXX */ -extern void tcp_dooptions(struct tcpopt *, u_char *, int, int); +//extern void tcp_dooptions(struct tcpopt *, u_char *, int, int); int t3_syncache_respond(struct toedev *tod, void *arg, struct mbuf *m) This defect is really a repeat of an older pair of reports. It would be better to just update them to indicate "still true" and to mark this one as a duplicate. *** This bug has been marked as a duplicate of bug 209924 ***