Bug 215691
| Summary: | head -r310854: lldb.full gets various "relocation truncated to fit: R_ARM_CALL against symbol ... defined in .plt section in ..." failure messages | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Mark Millard <marklmi26-fbsd> |
| Component: | bin | Assignee: | Ed Maste <emaste> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | CC: | emaste |
| Priority: | --- | Flags: | koobs:
maintainer-feedback?
(emaste) koobs: mfc-stable13? koobs: mfc-stable12? |
| Version: | CURRENT | ||
| Hardware: | arm | ||
| OS: | Any | ||
| See Also: | https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229050 | ||
The issue is that lldb is too large and requires a linker that supports range extension thunks. I believe you're linking with in-tree GNU ld and that it does not support them. Right now you could try using a cross-binutils port. There are lld patches in review for range extension thunks: 1. https://reviews.llvm.org/D34689 2. https://reviews.llvm.org/D34691 3. https://reviews.llvm.org/D34692 4. https://reviews.llvm.org/D35413 1 and 2 are probably sufficient to address this issue, 3 and 4 are part of a complete & more optimized implementation. I'm not quite sure what they're waiting on upstream, but presumably they will be committed to lld head soon and we will most likely backport them to lld 5.0.0 in FreeBSD-current. This should be working for armv7 with lld 6.0. More work is still needed for arm/armv6 - see PR 229050. (In reply to Ed Maste from comment #2) I tried building head -r358996 lldb for armv7 and the build reported no errors. (So, based on system llvm 10 materials.) (I do, by default, use -mcpu=cortex-a7 explicitly for armv7.) I also tried building world (lldb included) and kernel for armv6 and the build reported no errors. (no -mcpu or other such additions). I've not tested operation but this report was about the build failure, not operation. I do not know the status of this for system llvm9 or before materials or for stable/11 or stable/12 . It looks like llvm10 materials are planned to be MFC'd (to at least 12?). So I'm not sure about if the context is sufficient to close this as fixed overall (yet). Relative to head it could be closed as fixed. @Ed Is this now resolved? If so, please assign to committer that resolves and set relevent mfc-stable branches (to + if merged, or - if mfc did not apply). |
My attempted -r310854 based amd64 -> armv6 cross buildworld failed with: --- lldb.full --- /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o): In function `llvm_regexec': /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x80): relocation truncated to fit: R_ARM_CALL against symbol `strlen@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0xbc): relocation truncated to fit: R_ARM_CALL against symbol `strlen@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x144): relocation truncated to fit: R_ARM_CALL against symbol `memcmp@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x21c): relocation truncated to fit: R_ARM_CALL against symbol `__aeabi_read_tp@@FBSDprivate_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x624): relocation truncated to fit: R_ARM_CALL against symbol `malloc@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x6bc): relocation truncated to fit: R_ARM_CALL against symbol `malloc@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x840): relocation truncated to fit: R_ARM_CALL against symbol `free@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x8c4): relocation truncated to fit: R_ARM_CALL against symbol `memcmp@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x918): relocation truncated to fit: R_ARM_CALL against symbol `malloc@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x970): relocation truncated to fit: R_ARM_CALL against symbol `memset@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x9f0): additional relocation overflows omitted from the output # Meta data file /usr/obj/rpi2_clang/arm.armv6/usr/src/usr.bin/clang/lldb/lldb.full.meta CMD c++ -mcpu=cortex-a7 -mcpu=cortex-a7 -target armv6-gnueabihf-freebsd12.0 --sysroot=/usr/obj/rpi2_clang/arm.armv6/usr/src/tmp -B/usr/obj/rpi2_clang/arm.armv6/usr/src/tmp/usr/bin -O -pipe -I/usr/src/contrib/llvm/tools/lldb/include -I/usr/src/contrib/llvm/tools/clang/include -DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_STATIC_ANALYZER -I/usr/src/lib/clang/include -I/usr/src/contrib/llvm/include -DLLVM_ON_UNIX -DLLVM_ON_FREEBSD -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -DLLVM_DEFAULT_TARGET_TRIPLE=\"armv6-gnueabihf-freebsd12.0\" -DLLVM_HOST_TRIPLE=\"armv6-unknown-freebsd12.0\" -DDEFAULT_SYSROOT=\"\" -g -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses -Qunused-arguments -std=c++11 -fno-exceptions -fno-rtti -stdlib=libc++ -Wno-c++11-extensions -o lldb.full Driver.o /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/liblldb/liblldb.a /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libclang/libclang.a /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a -ledit -lpanel -lncursesw -lz -lpthread CWD /usr/obj/rpi2_clang/arm.armv6/usr/src/usr.bin/clang/lldb TARGET lldb.full -- command output -- /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o): In function `llvm_regexec': /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x80): relocation truncated to fit: R_ARM_CALL against symbol `strlen@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0xbc): relocation truncated to fit: R_ARM_CALL against symbol `strlen@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x144): relocation truncated to fit: R_ARM_CALL against symbol `memcmp@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x21c): relocation truncated to fit: R_ARM_CALL against symbol `__aeabi_read_tp@@FBSDprivate_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x624): relocation truncated to fit: R_ARM_CALL against symbol `malloc@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x6bc): relocation truncated to fit: R_ARM_CALL against symbol `malloc@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x840): relocation truncated to fit: R_ARM_CALL against symbol `free@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x8c4): relocation truncated to fit: R_ARM_CALL against symbol `memcmp@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x918): relocation truncated to fit: R_ARM_CALL against symbol `malloc@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x970): relocation truncated to fit: R_ARM_CALL against symbol `memset@@FBSD_1.0' defined in .plt section in /usr/obj/rpi2_clang/arm.armv6/usr/src/lib/clang/libllvm/libllvm.a(regexec.o) /usr/src/contrib/llvm/lib/Support/regexec.c:(.text+0x9f0): additional relocation overflows omitted from the output c++: error: linker command failed with exit code 1 (use -v to see invocation) *** Error code 1 Script started on Sat Dec 31 18:35:07 2016 Command: env __MAKE_CONF=/root/src.configs/make.conf SRCCONF=/dev/null SRC_ENV_CONF=/root/src.configs/src.conf.rpi2-clang-bootstrap.amd64-host WITH_META_MODE=yes MAKEOBJDIRPREFIX=/usr/obj/rpi2_clang make -j 4 buildworld buildkernel # more /root/src.configs/src.conf.rpi2-clang-bootstrap.amd64-host TO_TYPE=armv6 # KERNCONF=RPI2-NODBG TARGET=arm .if ${.MAKE.LEVEL} == 0 TARGET_ARCH=${TO_TYPE} .export TARGET_ARCH .endif # WITH_CROSS_COMPILER= WITHOUT_SYSTEM_COMPILER= # #CPUTYPE=soft WITH_LIBCPLUSPLUS= WITH_BINUTILS_BOOTSTRAP= WITH_CLANG_BOOTSTRAP= WITH_CLANG= WITH_CLANG_IS_CC= WITH_CLANG_FULL= WITH_CLANG_EXTRAS= WITH_LLDB= # WITH_BOOT= WITHOUT_LIB32= WITHOUT_LIBSOFT= # WITHOUT_ELFTOOLCHAIN_BOOTSTRAP= WITHOUT_GCC_BOOTSTRAP= WITHOUT_GCC= WITHOUT_GCC_IS_CC= WITHOUT_GNUCXX= # NO_WERROR= #WERROR= MALLOC_PRODUCTION= # WITH_DEBUG_FILES= # XCFLAGS+= -mcpu=cortex-a7 XCXXFLAGS+= -mcpu=cortex-a7 # There is no XCPPFLAGS but XCPP gets XCFLAGS content. # more /usr/src/sys/arm/conf/RPI2-NODBG # # RPI2 -- Custom configuration for the Raspberry Pi 2 # include "RPI2" ident RPI2-NODBG makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols options ALT_BREAK_TO_DEBUGGER options KDB # Enable kernel debugger support # For minimum debugger support (stable branch) use: options KDB_TRACE # Print a stack trace for a panic options DDB # Enable the kernel debugger # Extra stuff: #options VERBOSE_SYSINIT # Enable verbose sysinit messages #options BOOTVERBOSE=1 #options BOOTHOWTO=RB_VERBOSE #options KTR #options KTR_MASK=KTR_TRAP ##options KTR_CPUMASK=0xF #options KTR_VERBOSE # Disable any extra checking for. . . nooptions DEADLKRES # Enable the deadlock resolver 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