From owner-freebsd-arm@freebsd.org Mon Jan 11 10:51:55 2016 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 77C40A6CF89 for ; Mon, 11 Jan 2016 10:51:55 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: from asp.reflexion.net (outbound-mail-210-4.reflexion.net [208.70.210.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3C4411DBF for ; Mon, 11 Jan 2016 10:51:54 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: (qmail 6667 invoked from network); 11 Jan 2016 10:51:52 -0000 Received: from unknown (HELO mail-cs-01.app.dca.reflexion.local) (10.81.19.1) by 0 (rfx-qmail) with SMTP; 11 Jan 2016 10:51:52 -0000 Received: by mail-cs-01.app.dca.reflexion.local (Reflexion email security v7.80.0) with SMTP; Mon, 11 Jan 2016 05:52:01 -0500 (EST) Received: (qmail 29419 invoked from network); 11 Jan 2016 10:52:01 -0000 Received: from unknown (HELO iron2.pdx.net) (69.64.224.71) by 0 (rfx-qmail) with SMTP; 11 Jan 2016 10:52:01 -0000 X-No-Relay: not in my network X-No-Relay: not in my network X-No-Relay: not in my network X-No-Relay: not in my network Received: from [192.168.1.8] (c-76-115-7-162.hsd1.or.comcast.net [76.115.7.162]) by iron2.pdx.net (Postfix) with ESMTPSA id 74AEE1C43C6; Mon, 11 Jan 2016 02:51:51 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\)) Subject: Re: Bug 205663 Clang getting Bus Errors (arm SCLTR Bit[12]==1 context): Reported fixed on llvm's trunk From: Mark Millard In-Reply-To: <602C5169-40E4-4A68-9C91-214E617FC255@dsl-only.net> Date: Mon, 11 Jan 2016 02:51:51 -0800 Cc: freebsd-arm , FreeBSD Toolchain Content-Transfer-Encoding: quoted-printable Message-Id: <85A38C85-27C5-4998-B680-208441932563@dsl-only.net> References: <1452020032.1320.21.camel@freebsd.org> <7EE8F65E-7485-4FA9-A136-F22090DB107F@FreeBSD.org> <92264003-CF0E-4624-A28A-8AFB7C663BFB@dsl-only.net> <39774562-F76E-41E9-85E7-ABE257B013D6@FreeBSD.org> <1452365750.1523.9.camel@freebsd.org> <831D8A96-51D6-4E34-B422-A20857B6769E@dsl-only.net> <602C5169-40E4-4A68-9C91-214E617FC255@dsl-only.net> To: Dimitry Andric , Ian Lepore X-Mailer: Apple Mail (2.2104) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Jan 2016 10:51:55 -0000 On 2016-Jan-10, at 9:59 AM, Mark Millard wrote: >=20 > [A top post of my so far successful experiment. . .] >=20 > amd64 -> rpi2 cross build: buildworld buildkernel installkernel = installworld mergemaster delete-old then boot the result on an rpi2 = worked ( -march=3Darmv7a -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp = -mno-unaligned-access used ). >=20 > In order to also build lldb I used the following beyond what Ian sent = out for -mlong-calls usage: > (I make no claim to have tested the lldb build.) > (Tabs likely not preserved in the copy/paste operations.) >=20 >> # more lib_libc++_Makfile.diff=20 >> Index: /usr/src/lib/libc++/Makefile >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> --- /usr/src/lib/libc++/Makefile (revision 293430) >> +++ /usr/src/lib/libc++/Makefile (working copy) >> @@ -57,6 +57,9 @@ >> .endfor >>=20 >> WARNS=3D 0 >> +.if ${MACHINE_CPUARCH} =3D=3D "arm" >> +STATIC_CXXFLAGS+=3D-mlong-calls >> +.endif >> CFLAGS+=3D -I${HDRDIR} -I${_LIBCXXRTDIR} -nostdlib -DLIBCXXRT >> .if empty(CXXFLAGS:M-std=3D*) >> CXXFLAGS+=3D -std=3Dc++11 >=20 >> # more usr_bin_clang_lldb_Makefile.diff=20 >> Index: /usr/src/usr.bin/clang/lldb/Makefile >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> --- /usr/src/usr.bin/clang/lldb/Makefile (revision 293430) >> +++ /usr/src/usr.bin/clang/lldb/Makefile (working copy) >> @@ -6,6 +6,10 @@ >>=20 >> LLDB_SRCS=3D${.CURDIR}/../../../contrib/llvm/tools/lldb >>=20 >> +.if ${MACHINE_CPUARCH} =3D=3D "arm" >> +CFLAGS+=3D-mlong-calls >> +.endif >> + >> CFLAGS+=3D -I${LLDB_SRCS}/include >> CXXFLAGS+=3D -std=3Dc++11 >=20 >=20 >=20 > The rpi2 is now attempting buildworld buildkernel targeting itself. It = is way beyond where clang 3.7.1 crashed. The rpi2 finished buildworld buildkernel. To build: > WITH_FAST_DEPEND=3D > WITH_LIBCPLUSPLUS=3D > WITH_BINUTILS_BOOTSTRAP=3D > WITH_CLANG=3D > WITH_CLANG_IS_CC=3D > WITH_CLANG_FULL=3D > WITH_LLDB=3D > WITH_CLANG_EXTRAS=3D > WITH_BOOT=3D > # > WITHOUT_ELFTOOLCHAIN_BOOTSTRAP=3D > WITHOUT_CLANG_BOOTSTRAP=3D > WITHOUT_GCC_BOOTSTRAP=3D > WITHOUT_LIB32=3D > WITHOUT_GCC=3D > WITHOUT_GNUCXX=3D > # > NO_WERROR=3D > MALLOC_PRODUCTION=3D > # > WITH_DEBUG=3D > WITH_DEBUG_FILES=3D based on -target armv6--freebsd11.0-gnueabi -march=3Darmv7a = -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp -mno-unaligned-access it took the = rpi2 14 hours 26 min or so. Then: installkernel; install world; shutdown -r now . . . . . . It boots and operates as hoped. For this rpi2 context clang 3.8.0 = seems to be working fine for such activity. > # freebsd-version -ku; uname -aKU > 11.0-CURRENT > 11.0-CURRENT > FreeBSD rpi2 11.0-CURRENT FreeBSD 11.0-CURRENT #2 r293579M: Mon Jan 11 = 07:36:21 UTC 2016 = markmi@rpi2:/usr/obj/clang/arm.armv6/usr/src/sys/RPI2-NODBG arm 1100093 = 1100093 > make.conf empty. src.conf (make.conf empty): > TO_TYPE=3Darmv6 > # > KERNCONF=3DRPI2-NODBG > TARGET=3Darm > .if ${.MAKE.LEVEL} =3D=3D 0 > TARGET_ARCH=3D${TO_TYPE} > .export TARGET_ARCH > .endif > # > WITH_FAST_DEPEND=3D > WITH_LIBCPLUSPLUS=3D > WITH_BINUTILS_BOOTSTRAP=3D > WITH_CLANG=3D > WITH_CLANG_IS_CC=3D > WITH_CLANG_FULL=3D > WITH_LLDB=3D > WITH_CLANG_EXTRAS=3D > WITH_BOOT=3D > # > WITHOUT_ELFTOOLCHAIN_BOOTSTRAP=3D > WITHOUT_CLANG_BOOTSTRAP=3D > WITHOUT_GCC_BOOTSTRAP=3D > WITHOUT_LIB32=3D > WITHOUT_GCC=3D > WITHOUT_GNUCXX=3D > # > NO_WERROR=3D > MALLOC_PRODUCTION=3D > # > WITH_DEBUG=3D > WITH_DEBUG_FILES=3D > # > .if ${.MAKE.LEVEL} =3D=3D 0 > XCC=3D/usr/bin/clang -v -target ${TO_TYPE}--freebsd11.0-gnueabi = -march=3Darmv7a -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp = -mno-unaligned-access > XCXX=3D/usr/bin/clang++ -v -target ${TO_TYPE}--freebsd11.0-gnueabi = -march=3Darmv7a -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp = -mno-unaligned-access > XCPP=3D/usr/bin/clang-cpp -v -target ${TO_TYPE}--freebsd11.0-gnueabi = -march=3Darmv7a -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp = -mno-unaligned-access > .export XCC > .export XCXX > .export XCPP > .endif > # > .if ${.MAKE.LEVEL} =3D=3D 0 > CC=3D/usr/bin/clang -v -march=3Darmv7a -mcpu=3Dcortex-a7 = -mfloat-abi=3Dsoftfp -mno-unaligned-access > CXX=3D/usr/bin/clang++ -v -march=3Darmv7a -mcpu=3Dcortex-a7 = -mfloat-abi=3Dsoftfp -mno-unaligned-access > CPP=3D/usr/bin/clang-cpp -v -march=3Darmv7a -mcpu=3Dcortex-a7 = -mfloat-abi=3Dsoftfp -mno-unaligned-access > .export CC > .export CXX > .export CPP > .endif This vintage of src.conf presumes Ian Lepore's updates to the system's = binutils that allow them to handle armv7a movt instruction usage and the = like. RPI2-NODBG: > ident RPI2-NODBG >=20 > include "RPI2" >=20 > makeoptions DEBUG=3D-g # Build kernel with gdb(1) = debug symbols > options ALT_BREAK_TO_DEBUGGER > #options VERBOSE_SYSINIT # Enable verbose sysinit = messages >=20 > options KDB # Enable kernel debugger = support >=20 > # For minimum debugger support (stable branch) use: > #options KDB_TRACE # Print a stack trace for a = panic > options DDB # Enable the kernel debugger >=20 > nooptions INVARIANTS # Enable calls of extra sanity = checking > nooptions INVARIANT_SUPPORT # Extra sanity checks of = internal structures, required by INVARIANTS > nooptions WITNESS # Enable checks to detect = deadlocks and cycles > nooptions WITNESS_SKIPSPIN # Don't run witness on = spinlocks for speed > nooptions DIAGNOSTIC Where I've got somewhat variant source code is listed below: (This includes the recent changes to various Makefiles for arm = -mlong-call use for clang 3.8.0 .) > # svnlite status /usr/src/ > M /usr/src/contrib/libcxxrt/guard.cc > M /usr/src/lib/clang/clang.lib.mk > M /usr/src/lib/csu/arm/Makefile > M /usr/src/lib/csu/powerpc64/Makefile > M /usr/src/lib/libc++/Makefile > ? /usr/src/sys/arm/conf/RPI2-NODBG > M /usr/src/sys/boot/ofw/Makefile.inc > M /usr/src/sys/boot/powerpc/Makefile.inc > M /usr/src/sys/boot/uboot/Makefile.inc > ? /usr/src/sys/powerpc/conf/GENERIC64vtsc > ? /usr/src/sys/powerpc/conf/GENERIC64vtsc-NODEBUG > ? /usr/src/sys/powerpc/conf/GENERICvtsc > ? /usr/src/sys/powerpc/conf/GENERICvtsc-NODEBUG > M /usr/src/sys/powerpc/ofw/ofw_machdep.c > M /usr/src/usr.bin/clang/clang/Makefile > M /usr/src/usr.bin/clang/lldb/Makefile (Most of the above is powerpc64 or powerpc specific, some even PowerMac = G5 specific.) Confirming that lldb does something: > # more main.c > int > main () > { > return 0; > } > # clang main.c > # lldb a.out > (lldb) target create "a.out" > Current executable set to 'a.out' (arm). > (lldb) run > Process 744 launching > Process 744 launched: '/root/c_tests/a.out' (arm) > Process 744 exited with status =3D 0 (0x00000000)=20 > (lldb) quit So the 2 additional Makefiles with -mlong-calls usage for arm was = sufficient. It does look like that for -march=3Darmv7a there will be an issue of = needing more use of -fpic/-fPIC and the like in ports. Otherwise things = like "unresolvable R_ARM_MOVW_ABS_NC relocation against symbol `g_free'" = tend to occur in producing -Bsharable files. For -march=3Darmv7a -mcpu=3Dcortex-a7 there is the example of = .libs/gdkcairo.o being rejected with that message: > /bin/sh ../libtool --tag=3DCC --mode=3Dlink /usr/bin/clang -v = -target armv6--freebsd11.0-gnueabi -march=3Darmv7-a -mcpu=3Dcortex-a7 = -mfloat-abi=3Dsoftfp -mno-unaligned-access -pipe -mfloat-abi=3Dsoftfp = -g -fno-strict-aliasing -Wall -version-info 2400:29:2400 = -export-dynamic -rpath /usr/local/lib -export-symbols-regex "^[^_].*" = -L/usr/local/lib -o libgdk-x11-2.0.la gdk.lo gdkapplaunchcontext.lo = gdkcairo.lo gdkcolor.lo gdkcursor.lo gdkdisplay.lo gdkdisplaymanager.lo = gdkdnd.lo gdkdraw.lo gdkevents.lo gdkfont.lo gdkgc.lo gdkglobals.lo = gdkimage.lo gdkkeys.lo gdkkeyuni.lo gdkoffscreenwindow.lo gdkpango.lo = gdkpixbuf-drawable.lo gdkpixbuf-render.lo gdkpixmap.lo = gdkpolyreg-generic.lo gdkrectangle.lo gdkregion-generic.lo gdkrgb.lo = gdkscreen.lo gdkselection.lo gdkvisual.lo gdkwindow.lo gdkwindowimpl.lo = gdkenumtypes.lo gdkmarshalers.lo x11/libgdk-x11.la -L/usr/local/lib = -lpangocairo-1.0 -lpango-1.0 -lgio-2.0 -lfontconfig -lfreetype -lXrender = -lXinerama -lXi -lXrandr -lXcursor -lXcomposite -lXdamage -lXfixes = -lgdk_pixbuf-2.0 -lgobject-2.0 -lglib-2.0 -lintl -lcairo -lpthread -lX11 = -lXext -lm . . . > libtool: link: /usr/bin/clang -v -target armv6--freebsd11.0-gnueabi = -march=3Darmv7-a -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp = -mno-unaligned-access -shared .libs/gdk.o .libs/gdkapplaunchcontext.o = .libs/gdkcairo.o .libs/gdkcolor.o .libs/gdkcursor.o .libs/gdkdisplay.o = .libs/gdkdisplaymanager.o .libs/gdkdnd.o .libs/gdkdraw.o = .libs/gdkevents.o .libs/gdkfont.o .libs/gdkgc.o .libs/gdkglobals.o = .libs/gdkimage.o .libs/gdkkeys.o .libs/gdkkeyuni.o = .libs/gdkoffscreenwindow.o .libs/gdkpango.o .libs/gdkpixbuf-drawable.o = .libs/gdkpixbuf-render.o .libs/gdkpixmap.o .libs/gdkpolyreg-generic.o = .libs/gdkrectangle.o .libs/gdkregion-generic.o .libs/gdkrgb.o = .libs/gdkscreen.o .libs/gdkselection.o .libs/gdkvisual.o = .libs/gdkwindow.o .libs/gdkwindowimpl.o .libs/gdkenumtypes.o = .libs/gdkmarshalers.o -Wl,--whole-archive x11/.libs/libgdk-x11.a = -Wl,--no-whole-archive -L/usr/local/lib -lpangocairo-1.0 -lpango-1.0 = -lgio-2.0 -lfontconfig -lfreetype -lXrender -lXinerama -lXi -lXrandr = -lXcursor -lXcomposite -lXdamage -lXfixes -lgdk_pixbuf-2.0 -lgobject-2.0 = -lglib-2.0 -lintl -lcairo -lpthread -lX11 -lXext -lm -march=3Darmv7-a = -mcpu=3Dcortex-a7 -mfloat-abi=3Dsoftfp -mno-unaligned-access = -mfloat-abi=3Dsoftfp -g -Wl,-soname -Wl,libgdk-x11-2.0.so.0 = -Wl,-version-script -Wl,.libs/libgdk-x11-2.0.so.0.2400.29-ver -o = .libs/libgdk-x11-2.0.so.0.2400.29 > FreeBSD clang version 3.8.0 (trunk 256945) (based on LLVM 3.8.0svn) > Target: armv6--freebsd11.0-gnueabi > Thread model: posix > InstalledDir: /usr/bin > "/usr/bin/ld" --eh-frame-hdr -Bshareable --hash-style=3Dboth = --enable-new-dtags -o .libs/libgdk-x11-2.0.so.0.2400.29 /usr/lib/crti.o = /usr/lib/crtbeginS.o -L/usr/local/lib -L/usr/lib .libs/gdk.o = .libs/gdkapplaunchcontext.o .libs/gdkcairo.o .libs/gdkcolor.o = .libs/gdkcursor.o .libs/gdkdisplay.o .libs/gdkdisplaymanager.o = .libs/gdkdnd.o .libs/gdkdraw.o .libs/gdkevents.o .libs/gdkfont.o = .libs/gdkgc.o .libs/gdkglobals.o .libs/gdkimage.o .libs/gdkkeys.o = .libs/gdkkeyuni.o .libs/gdkoffscreenwindow.o .libs/gdkpango.o = .libs/gdkpixbuf-drawable.o .libs/gdkpixbuf-render.o .libs/gdkpixmap.o = .libs/gdkpolyreg-generic.o .libs/gdkrectangle.o = .libs/gdkregion-generic.o .libs/gdkrgb.o .libs/gdkscreen.o = .libs/gdkselection.o .libs/gdkvisual.o .libs/gdkwindow.o = .libs/gdkwindowimpl.o .libs/gdkenumtypes.o .libs/gdkmarshalers.o = --whole-archive x11/.libs/libgdk-x11.a --no-whole-archive = -lpangocairo-1.0 -lpango-1.0 -lgio-2.0 -lfontconfig -lfreetype -lXrender = -lXinerama -lXi -lXrandr -lXcursor -lXcomposite -lXdamage -lXfixes = -lgdk_pixbuf-2.0 -lgobject-2.0 -lglib-2.0 -lintl -lcairo -lpthread -lX11 = -lXext -lm -soname libgdk-x11-2.0.so.0 -version-script = .libs/libgdk-x11-2.0.so.0.2400.29-ver -lgcc --as-needed -lgcc_s = --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed = /usr/lib/crtendS.o /usr/lib/crtn.o > /usr/bin/ld: .libs/gdkcairo.o(.text+0x61c): unresolvable = R_ARM_MOVW_ABS_NC relocation against symbol `g_free' > /usr/bin/ld: final link failed: Nonrepresentable section on output > clang: error: linker command failed with exit code 1 (use -v to see = invocation) > Makefile:1098: recipe for target 'libgdk-x11-2.0.la' failed > gmake[6]: *** [libgdk-x11-2.0.la] Error 1 > gmake[6]: Leaving directory = '/usr/obj/portswork/usr/ports/x11-toolkits/gtk20/work/gtk+-2.24.29/gdk' > Makefile:1238: recipe for target 'all-recursive' failed > gmake[5]: *** [all-recursive] Error 1 > gmake[5]: Leaving directory = '/usr/obj/portswork/usr/ports/x11-toolkits/gtk20/work/gtk+-2.24.29/gdk' > Makefile:1018: recipe for target 'all' failed > gmake[4]: *** [all] Error 2 > gmake[4]: Leaving directory = '/usr/obj/portswork/usr/ports/x11-toolkits/gtk20/work/gtk+-2.24.29/gdk' > Makefile:729: recipe for target 'all-recursive' failed > gmake[3]: *** [all-recursive] Error 1 > gmake[3]: Leaving directory = '/usr/obj/portswork/usr/ports/x11-toolkits/gtk20/work/gtk+-2.24.29' > Makefile:621: recipe for target 'all' failed > gmake[2]: *** [all] Error 2 > gmake[2]: Leaving directory = '/usr/obj/portswork/usr/ports/x11-toolkits/gtk20/work/gtk+-2.24.29' > =3D=3D=3D> Compilation failed unexpectedly. > Try to set MAKE_JOBS_UNSAFE=3Dyes and rebuild before reporting the = failure to > the maintainer. > *** Error code 1 Where the prior activity to produce .libs/gdkcairo.o was: > /bin/sh ../libtool --tag=3DCC --mode=3Dcompile /usr/bin/clang -v = -target armv6--freebsd11.0-gnueabi -march=3Darmv7-a -mcpu=3Dcortex-a7 = -mfloat-abi=3Dsoftfp -mno-unaligned-access -DHAVE_CONFIG_H -I. -I.. = -DG_LOG_DOMAIN=3D\"Gdk\" -DGDK_COMPILATION -I.. -I.. -I../gdk = -DG_DISABLE_CAST_CHECKS -I/usr/local/include/glib-2.0 = -I/usr/local/lib/glib-2.0/include -I/usr/local/include = -I/usr/local/include/pango-1.0 -I/usr/local/include/cairo = -I/usr/local/include/pixman-1 -I/usr/local/include/freetype2 = -I/usr/local/include/libdrm -I/usr/local/include/libpng16 = -I/usr/local/include/gio-unix-2.0/ -I/usr/local/include/gdk-pixbuf-2.0 = -pthread -D_THREAD_SAFE -I/usr/local/include = -DG_DISABLE_SINGLE_INCLUDES -DATK_DISABLE_SINGLE_INCLUDES = -DGDK_PIXBUF_DISABLE_SINGLE_INCLUDES -DGTK_DISABLE_SINGLE_INCLUDES = -I/usr/local/include -D_THREAD_SAFE -pipe -mfloat-abi=3Dsoftfp -g = -fno-strict-aliasing -Wall -MT gdkcairo.lo -MD -MP -MF = .deps/gdkcairo.Tpo -c -o gdkcairo.lo gdkcairo.c . . . > "/usr/bin/clang" -cc1 -triple armv7--freebsd11.0-gnueabi -emit-obj = -mrelax-all -disable-free -main-file-name gdkcairo.c -mrelocation-model = static -mthread-model posix -mdisable-fp-elim -relaxed-alias > ing -masm-verbose -mconstructor-aliases -target-cpu cortex-a7 = -target-feature +soft-float-abi -target-feature +strict-align = -target-abi aapcs-linux -mfloat-abi soft -v -dwarf-column-info = -debug-info-k > ind=3Dstandalone -dwarf-version=3D2 -debugger-tuning=3Dgdb = -coverage-file = /usr/obj/portswork/usr/ports/x11-toolkits/gtk20/work/gtk+-2.24.29/gdk/gdkc= airo.c -resource-dir /usr/bin/../lib/clang/3.8.0 -dependen > cy-file .deps/gdkcairo.Tpo -sys-header-deps -MP -MT gdkcairo.lo -D = HAVE_CONFIG_H -I . -I .. -D "G_LOG_DOMAIN=3D\"Gdk\"" -D GDK_COMPILATION = -I .. -I .. -I ../gdk -D G_DISABLE_CAST_CHECKS -I /usr/local/in > clude/glib-2.0 -I /usr/local/lib/glib-2.0/include -I = /usr/local/include -I /usr/local/include/pango-1.0 -I = /usr/local/include/cairo -I /usr/local/include/pixman-1 -I = /usr/local/include/freetype2 -I /u > sr/local/include/libdrm -I /usr/local/include/libpng16 -I = /usr/local/include/gio-unix-2.0/ -I /usr/local/include/gdk-pixbuf-2.0 -D = _THREAD_SAFE -I /usr/local/include -D G_DISABLE_SINGLE_INCLUDES -D AT > K_DISABLE_SINGLE_INCLUDES -D GDK_PIXBUF_DISABLE_SINGLE_INCLUDES -D = GTK_DISABLE_SINGLE_INCLUDES -I /usr/local/include -D _THREAD_SAFE -Wall = -fdebug-compilation-dir /usr/obj/portswork/usr/ports/x11-tool > kits/gtk20/work/gtk+-2.24.29/gdk -ferror-limit 19 -fmessage-length 200 = -pthread -fallow-half-arguments-and-returns -fno-signed-char = -fobjc-runtime=3Dgnustep -fdiagnostics-show-option -fcolor-diagnostics > -o gdkcairo.o -x c gdkcairo.c . . . > libtool: compile: mv -f "gdkcairo.o" ".libs/gdkcairo.o" =3D=3D=3D Mark Millard markmi at dsl-only.net On 2016-Jan-10, at 3:55 AM, Mark Millard wrote: >=20 >=20 > On 2016-Jan-9, at 10:55 AM, Ian Lepore wrote: >>=20 >> On Sat, 2016-01-09 at 15:03 +0100, Dimitry Andric wrote: >>> On 09 Jan 2016, at 04:46, Mark Millard = wrote: >>>>=20 >>>> On 2016-Jan-7, at 2:57 PM, Dimitry Andric >>>> wrote: >>> ... >>>>> FYI, I have added a -mno-movt option for this purpose upstream, >>>>> and >>>>> imported a newer snapshot into the clang380-import branch. As of >>>>> r293384, it now uses the new option spelling for modules, if your >>>>> clang >>>>> is 3.8.0 or higher. >>>>>=20 >>>>> -Dimitry >>>>=20 >>>> I've not been able to get to the point of running clang++ 3.8 on >>>> the rpi2 yet: R_ARM_CALL and R_ARM_JUMP24 relocation truncations >>>> during the cross build's buildworld interfere. >>>=20 >>> Yes, this is caused by too large call distances. In other words, = the >>> clang executable is getting to big to link. Apparently we need to = do >>> some tricks with -mlongcall to fix this. As I am no arm expert, I >>> welcome any patch submissions. :-) >>>=20 >>> -Dimitry >>>=20 >>=20 >> Here's the patch I got from Andy for the clang380 branch, modified = with >> Warner's suggestion to use MACHINE_CPUARCH instead of MACHINE. With >> this I can get a working arm world that will build a runnable >> helloworld.c (and .cc) on a dreamplug. (I.e., it appears clang 3.8.0 >> fixes the problem we had with clang 3.7.x where it wouldn't run at = all >> on armv4/5 systems). I have not tried compling anything complex yet. >>=20 >> -- Ian >=20 >=20 > Context: When I build I normally build lldb and the like as well, even = using WITH_CLANG_EXTRAS=3D . >=20 > In trying to get lldb to link I eventually get to the point that = libc++ is getting relocation truncations. Before getting to that I deal = with /usr/src/usr.bin/clang/lldb/Makefile to cover what is initially = reported during buildworld for lldb relocation truncations. Then with = that in place and retrying I get reports from libc++.a for a couple of = the contained .o files having relocations that are truncated (before it = reports "additional relocation overflows omitted from the output"): >=20 > /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(thread.o) > /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o) >=20 > (Both have messages from multiple places in each .o file.) >=20 > As far as I can tell for general use -long-calls is going to be needed = for at least some system level .a library content if the .a's are to be = used. >=20 > Which leaves me wondering if STATIC_CXXFLAGS having -mlong-calls for = arm system libraries fairly generally is appropriate for those intending = on building the arm-native clang toolchain and related material in = buildworld. (STATIC_CFLAGS too?) A significant case analysis of what = happens to currently be too far apart would be fragile as things grow = even more later. >=20 > This sort of issue may well not be limited to TARGET=3Darm contexts. >=20 > The detailed libc++.a relocation truncation complaints that I got = were: >=20 >=20 >> --- all_subdir_lldb --- >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(thread.o): In = function = `_ZNSt3__16vectorINS_4pairIPNS_18condition_variableEPNS_5mutexEEENS_18__hi= dden_allocatorIS6_EEE21__push_back_slow_pathIS6_EEvOT_': >> = /usr/src/lib/libc++/../../contrib/libc++/src/thread.cpp:(.text._ZNSt3__16v= ectorINS_4pairIPNS_18condition_variableEPNS_5mutexEEENS_18__hidden_allocat= orIS6_EEE21__push_back_slow_pathIS6_EEvOT_[_ZNSt3__16vectorINS_4pairIPNS_1= 8condition_variableEPNS_5mutexEEENS_18__hidden_allocatorIS6_EEE21__push_ba= ck_slow_pathIS6_EEvOT_]+0x30): relocation truncated to fit: R_ARM_CALL = against symbol = `std::__1::__vector_base_common::__throw_length_error() const' = defined in = .text._ZNKSt3__120__vector_base_commonILb1EE20__throw_length_errorEv[_ZNKS= t3__120__vector_base_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(thread.o): In = function = `_ZNSt3__16vectorIPNS_17__assoc_sub_stateENS_18__hidden_allocatorIS2_EEE21= __push_back_slow_pathIRKS2_EEvOT_': >> = /usr/src/lib/libc++/../../contrib/libc++/src/thread.cpp:(.text._ZNSt3__16v= ectorIPNS_17__assoc_sub_stateENS_18__hidden_allocatorIS2_EEE21__push_back_= slow_pathIRKS2_EEvOT_[_ZNSt3__16vectorIPNS_17__assoc_sub_stateENS_18__hidd= en_allocatorIS2_EEE21__push_back_slow_pathIRKS2_EEvOT_]+0x30): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__vector_base_common::__throw_length_error() const' = defined in = .text._ZNKSt3__120__vector_base_commonILb1EE20__throw_length_errorEv[_ZNKS= t3__120__vector_base_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 > . . . >> --- all_subdir_clang --- >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::collate_byname::do_compare(char const*, char = const*, char const*, char const*) const': > . . . >> --- all_subdir_clang --- >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text+0x81ec): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) > . . . >> --- all_subdir_clang --- >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text+0x82c0): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::collate_byname::do_transform(char const*, char = const*) const': >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text+0x8430): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::collate_byname::do_compare(wchar_t const*, = wchar_t const*, wchar_t const*, wchar_t const*) const': >=20 >> --- all_subdir_clang --- >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text+0x88a8): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text+0x899c): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::collate_byname::do_transform(wchar_t = const*, wchar_t const*) const': >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text+0x8b34): = relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::collate::do_transform(char const*, char = const*) const': >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text._ZNKSt3__17= collateIcE12do_transformEPKcS3_[_ZNKSt3__17collateIcE12do_transformEPKcS3_= ]+0x34): relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::collate::do_transform(wchar_t const*, = wchar_t const*) const': >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text._ZNKSt3__17= collateIwE12do_transformEPKwS3_[_ZNKSt3__17collateIwE12do_transformEPKwS3_= ]+0x38): relocation truncated to fit: R_ARM_CALL against symbol = `std::__1::__basic_string_common::__throw_length_error() const' = defined in = .text._ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv[_ZNK= St3__121__basic_string_commonILb1EE20__throw_length_errorEv] section in = /usr/obj/clang/arm.armv6/usr/src/usr.bin/clang/lldb/../../../lib/clang/lib= lldbCore/liblldbCore.a(CxaDemangle.o) >=20 >> /usr/obj/clang/arm.armv6/usr/src/tmp/usr/lib/libc++.a(locale.o): In = function `std::__1::num_put > = >::do_put(std::__1::ostreambuf_iterator >, std::__1::ios_base&, char, long) const': >> = /usr/src/lib/libc++/../../contrib/libc++/src/locale.cpp:(.text._ZNKSt3__17= num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8= ios_baseEcl[_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traits= IcEEEEE6do_putES4_RNS_8ios_baseEcl]+0x16c): additional relocation = overflows omitted from the output >=20 >=20 > Ian's/Andy's original patch is listed below for reference. >=20 >> Index: lib/clang/clang.lib.mk >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> --- lib/clang/clang.lib.mk (revision 293584) >> +++ lib/clang/clang.lib.mk (working copy) >> @@ -6,4 +6,8 @@ LLVM_SRCS=3D ${.CURDIR}/../../../contrib/llvm >>=20 >> INTERNALLIB=3D >>=20 >> +.if ${MACHINE_CPUARCH} =3D=3D "arm" >> +STATIC_CXXFLAGS+=3D-mlong-calls >> +.endif >> + >> .include >> Index: lib/csu/arm/Makefile >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> --- lib/csu/arm/Makefile (revision 293584) >> +++ lib/csu/arm/Makefile (working copy) >> @@ -23,7 +23,7 @@ CLEANFILES+=3D crt1.s gcrt1.s Scrt1.s >> # directly compiled to .o files. >>=20 >> crt1.s: crt1.c >> - ${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c >> + ${CC} ${CFLAGS} -mlong-calls -S -o ${.TARGET} ${.CURDIR}/crt1.c >> sed ${SED_FIX_NOTE} ${.TARGET} >>=20 >> crt1.o: crt1.s >> @@ -30,7 +30,7 @@ crt1.o: crt1.s >> ${CC} ${ACFLAGS} -c -o ${.TARGET} crt1.s >>=20 >> gcrt1.s: crt1.c >> - ${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c >> + ${CC} ${CFLAGS} -mlong-calls -DGCRT -S -o ${.TARGET} = ${.CURDIR}/crt1.c >> sed ${SED_FIX_NOTE} ${.TARGET} >>=20 >> gcrt1.o: gcrt1.s >> Index: usr.bin/clang/clang/Makefile >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> --- usr.bin/clang/clang/Makefile (revision 293584) >> +++ usr.bin/clang/clang/Makefile (working copy) >> @@ -11,7 +11,11 @@ SRCS=3D cc1_main.cpp \ >>=20 >> .if ${MK_SHARED_TOOLCHAIN} =3D=3D "no" >> NO_SHARED?=3D yes >> + >> +.if ${MACHINE_CPUARCH} =3D=3D "arm" >> +CFLAGS+=3D-mlong-calls >> .endif >> +.endif >>=20 >> LINKS=3D ${BINDIR}/clang ${BINDIR}/clang++ \ >> ${BINDIR}/clang ${BINDIR}/clang-cpp >>=20 >=20