A weird bug
Andrew Pinski
pinskia@gmail.com
Fri Mar 5 01:37:13 GMT 2021
On Thu, Mar 4, 2021 at 3:19 PM Gary Oblock via Gcc <gcc@gcc.gnu.org> wrote:
>
> Guys,
>
> I've been trying to debug a linker error (which I thought was a bug in
> my optimization.) Well it turns out it occurs in a brand new virgin
> version of the compiler running with binutils 2.36 which is the latest
> version. I'm posting this on both the binutils list and gcc list
> because people of either list are just as likely to have an idea about
> what's going on. Note, I tried to walk though the ld code in gdb but
> it's nontrivial trying figure out why an error occured. I can't just
> set a watch point on a flag because, at least in some places it seems
> like the default state of the flag is failure and the code then
> proceeds to try various things to see if they'll work.
I will give you a hint, pre GCC 10, defaulted to -fcommon, GCC 10+
defaults to -fno-common.
Thanks,
Andrew
>
> Regarding the compiler that I built:
>
> $ git status
> On branch master
> Your branch is up to date with 'origin/master'.
>
> nothing to commit, working tree clean
>
> Now here is how I built it:
>
> ./my_dual_build_script gcc_virgin_build 2>build_log_virgin 1>&2
>
> where my_dual_build_script is:
>
> cd $1
> BASE=`pwd`
> echo BASE = $BASE
> touch BU_objdir objdir install
> rm -rf BU_objdir objdir install
> mkdir BU_objdir objdir install
>
> cd BU_objdir
> echo BUILDING BINUTILS IN `pwd`
> ../binutils-2.36/configure --prefix=$BASE/install
> make CFLAGS='-O2 -g' CXXFLAGS='-O2 -g' -j 12
> ##make CFLAGS='-O0 -g' CXXFLAGS='-O2 -g' -j 12
> make install
>
> cd ../objdir
> echo BUILDING GCC IN `pwd`
> ../sources/configure --prefix=$BASE/install --disable-bootstrap -enable-language=c,c++,lto --disable-multilib --enable-valgrind-annotations
> ##make CFLAGS='-O0 -g' CXXFLAGS='-O0 -g' -j 12
> make CFLAGS='-O2 -g' CXXFLAGS='-O2 -g' -j 12
> make install
>
> My installed gcc is:
>
> $ gcc -v
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
> OFFLOAD_TARGET_NAMES=nvptx-none
> OFFLOAD_TARGET_DEFAULT=1
> Target: x86_64-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.5.0-3ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
> Thread model: posix
> gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
>
> My istalled binutils are:
>
> $ ld -v
> GNU ld (GNU Binutils for Ubuntu) 2.30
>
> Now the application that failing during testing is 505.x264_5 which is
> from SPEC17. Note, please don't try to duplicate this bug unless you
> have access to SPEC17 and are running an identical system because
> Martin Liska tried to do this on a different system but but he
> couldn't get it to duplicate.
>
> Now for any SPEC heads out there here's the germane parts
> from its confige file.
>
> define gcc_dir /home/gary/gcc_virgin_build/install
>
> preENV_LD_LIBRARY_PATH = %{gcc_dir}/lib64/:%{gcc_dir}/lib/:/lib64
> SPECLANG = %{gcc_dir}/bin/
> CC = $(SPECLANG)gcc --verbose -std=c99 %{model}
> CXX = $(SPECLANG)g++ -std=c++03 %{model}
> FC = $(SPECLANG)gfortran %{model}
>
> OPTIMIZE = -O2 -v -Wl,--verbose=11111 -Wl,-debug
> COPTIMIZE = -save-temps
>
> Finally here linker's part of the x264 build output:
>
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/bin/ld -plugin /home/gary/gcc_virgin_build/install/libexec/gcc/x86_64-pc-linux-gnu/11.0.1/liblto_plugin.so -plugin-opt=/home/gary/gcc_virgin_build/install/libexec/gcc/x86_64-pc-linux-gnu/11.0.1/lto-wrapper -plugin-opt=-fresolution=ldecod_r.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o ldecod_r /usr/lib/x86_64-linux-gnu/crt1.o /usr/lib/x86_64-linux-gnu/crti.o /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/crtbegin.o -L/home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1 -L/home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64 -L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/lib -L/home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../.. --verbose=11111 ldecod_src/nal.o ldecod_src/mbuffer_mvc.o ldecod_src/image.o ldecod_src/mb_access.o ldecod_src/memalloc.o ldecod_src/mc_prediction.o ldecod_src/mb_prediction.o ldecod_src/intra4x4_pred_mbaff.o ldecod_src/loop_filter_mbaff.o ldecod_src/context_ini.o ldecod_src/configfile.o ldecod_src/cabac.o ldecod_src/sei.o ldecod_src/leaky_bucket.o ldecod_src/filehandle.o ldecod_src/errorconcealment.o ldecod_src/decoder_test.o ldecod_src/img_process.o ldecod_src/mv_prediction.o ldecod_src/fmo.o ldecod_src/output.o ldecod_src/mc_direct.o ldecod_src/rtp.o ldecod_src/nalucommon.o ldecod_src/config_common.o ldecod_src/intra_chroma_pred.o ldecod_src/transform8x8.o ldecod_src/blk_prediction.o ldecod_src/intra8x8_pred_mbaff.o ldecod_src/erc_do_i.o ldecod_src/io_tiff.o ldecod_src/mbuffer.o ldecod_src/block.o ldecod_src/intra4x4_pred.o ldecod_src/transform.o ldecod_src/annexb.o ldecod_src/ldecod.o ldecod_src/macroblock.o ldecod_src/vlc.o ldecod_src/parset.o ldecod_src/loop_filter_normal.o ldecod_src/parsetcommon.o ldecod_src/erc_do_p.o ldecod_src/loopFilter.o ldecod_src/intra16x16_pred_mbaff.o ldecod_src/intra4x4_pred_normal.o ldecod_src/intra16x16_pred_normal.o ldecod_src/win32.o ldecod_src/intra16x16_pred.o ldecod_src/intra8x8_pred_normal.o ldecod_src/io_raw.o ldecod_src/img_io.o ldecod_src/nalu.o ldecod_src/quant.o ldecod_src/intra8x8_pred.o ldecod_src/erc_api.o ldecod_src/header.o ldecod_src/biaridecod.o ldecod_src/input.o -lm -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/crtend.o /usr/lib/x86_64-linux-gnu/crtn.o
> GNU ld (GNU Binutils) 2.36
> Supported emulations:
> elf_x86_64
> elf32_x86_64
> elf_i386
> elf_iamcu
> elf_l1om
> elf_k1om
> using internal linker script:
> ==================================================
> /* Script for -z combreloc -z separate-code */
> /* Copyright (C) 2014-2021 Free Software Foundation, Inc.
> Copying and distribution of this script, with or without modification,
> are permitted in any medium without royalty provided the copyright
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> OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64",
> "elf64-x86-64")
> OUTPUT_ARCH(i386:x86-64)
> ENTRY(_start)
> SEARCH_DIR("/home/gary/gcc_virgin_build/install/x86_64-pc-linux-gnu/lib64"); SEARCH_DIR("/home/gary/gcc_virgin_build/install/lib64"); SEARCH_DIR("/usr/local/lib64"); SEARCH_DIR("/lib64"); SEARCH_DIR("/usr/lib64"); SEARCH_DIR("/home/gary/gcc_virgin_build/install/x86_64-pc-linux-gnu/lib"); SEARCH_DIR("/home/gary/gcc_virgin_build/install/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib");
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> ==================================================
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/bin/ld: mode elf_x86_64
> attempt to open /usr/lib/x86_64-linux-gnu/crt1.o succeeded
> /usr/lib/x86_64-linux-gnu/crt1.o
> attempt to open /usr/lib/x86_64-linux-gnu/crti.o succeeded
> /usr/lib/x86_64-linux-gnu/crti.o
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/crtbegin.o succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/crtbegin.o
> attempt to open ldecod_src/nal.o succeeded
> ldecod_src/nal.o
> attempt to open ldecod_src/mbuffer_mvc.o succeeded
> ldecod_src/mbuffer_mvc.o
> attempt to open ldecod_src/image.o succeeded
> ldecod_src/image.o
> attempt to open ldecod_src/mb_access.o succeeded
> ldecod_src/mb_access.o
> attempt to open ldecod_src/memalloc.o succeeded
> ldecod_src/memalloc.o
> attempt to open ldecod_src/mc_prediction.o succeeded
> ldecod_src/mc_prediction.o
> attempt to open ldecod_src/mb_prediction.o succeeded
> ldecod_src/mb_prediction.o
> attempt to open ldecod_src/intra4x4_pred_mbaff.o succeeded
> ldecod_src/intra4x4_pred_mbaff.o
> attempt to open ldecod_src/loop_filter_mbaff.o succeeded
> ldecod_src/loop_filter_mbaff.o
> attempt to open ldecod_src/context_ini.o succeeded
> ldecod_src/context_ini.o
> attempt to open ldecod_src/configfile.o succeeded
> ldecod_src/configfile.o
> attempt to open ldecod_src/cabac.o succeeded
> ldecod_src/cabac.o
> attempt to open ldecod_src/sei.o succeeded
> ldecod_src/sei.o
> attempt to open ldecod_src/leaky_bucket.o succeeded
> ldecod_src/leaky_bucket.o
> attempt to open ldecod_src/filehandle.o succeeded
> ldecod_src/filehandle.o
> attempt to open ldecod_src/errorconcealment.o succeeded
> ldecod_src/errorconcealment.o
> attempt to open ldecod_src/decoder_test.o succeeded
> ldecod_src/decoder_test.o
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/bin/ld: ldecod_src/decoder_test.o:(.bss+0x0): multiple definition of `cfgparams'; ldecod_src/configfile.o:(.bss+0x0): first defined here
> attempt to open ldecod_src/img_process.o succeeded
> ldecod_src/img_process.o
> attempt to open ldecod_src/mv_prediction.o succeeded
> ldecod_src/mv_prediction.o
> attempt to open ldecod_src/fmo.o succeeded
> ldecod_src/fmo.o
> attempt to open ldecod_src/output.o succeeded
> ldecod_src/output.o
> attempt to open ldecod_src/mc_direct.o succeeded
> ldecod_src/mc_direct.o
> attempt to open ldecod_src/rtp.o succeeded
> ldecod_src/rtp.o
> attempt to open ldecod_src/nalucommon.o succeeded
> ldecod_src/nalucommon.o
> attempt to open ldecod_src/config_common.o succeeded
> ldecod_src/config_common.o
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/bin/ld: ldecod_src/config_common.o:(.bss+0x0): multiple definition of `cfgparams'; ldecod_src/configfile.o:(.bss+0x0): first defined here
> attempt to open ldecod_src/intra_chroma_pred.o succeeded
> ldecod_src/intra_chroma_pred.o
> attempt to open ldecod_src/transform8x8.o succeeded
> ldecod_src/transform8x8.o
> attempt to open ldecod_src/blk_prediction.o succeeded
> ldecod_src/blk_prediction.o
> attempt to open ldecod_src/intra8x8_pred_mbaff.o succeeded
> ldecod_src/intra8x8_pred_mbaff.o
> attempt to open ldecod_src/erc_do_i.o succeeded
> ldecod_src/erc_do_i.o
> attempt to open ldecod_src/io_tiff.o succeeded
> ldecod_src/io_tiff.o
> attempt to open ldecod_src/mbuffer.o succeeded
> ldecod_src/mbuffer.o
> attempt to open ldecod_src/block.o succeeded
> ldecod_src/block.o
> attempt to open ldecod_src/intra4x4_pred.o succeeded
> ldecod_src/intra4x4_pred.o
> attempt to open ldecod_src/transform.o succeeded
> ldecod_src/transform.o
> attempt to open ldecod_src/annexb.o succeeded
> ldecod_src/annexb.o
> attempt to open ldecod_src/ldecod.o succeeded
> ldecod_src/ldecod.o
> attempt to open ldecod_src/macroblock.o succeeded
> ldecod_src/macroblock.o
> attempt to open ldecod_src/vlc.o succeeded
> ldecod_src/vlc.o
> attempt to open ldecod_src/parset.o succeeded
> ldecod_src/parset.o
> attempt to open ldecod_src/loop_filter_normal.o succeeded
> ldecod_src/loop_filter_normal.o
> attempt to open ldecod_src/parsetcommon.o succeeded
> ldecod_src/parsetcommon.o
> attempt to open ldecod_src/erc_do_p.o succeeded
> ldecod_src/erc_do_p.o
> attempt to open ldecod_src/loopFilter.o succeeded
> ldecod_src/loopFilter.o
> attempt to open ldecod_src/intra16x16_pred_mbaff.o succeeded
> ldecod_src/intra16x16_pred_mbaff.o
> attempt to open ldecod_src/intra4x4_pred_normal.o succeeded
> ldecod_src/intra4x4_pred_normal.o
> attempt to open ldecod_src/intra16x16_pred_normal.o succeeded
> ldecod_src/intra16x16_pred_normal.o
> attempt to open ldecod_src/win32.o succeeded
> ldecod_src/win32.o
> attempt to open ldecod_src/intra16x16_pred.o succeeded
> ldecod_src/intra16x16_pred.o
> attempt to open ldecod_src/intra8x8_pred_normal.o succeeded
> ldecod_src/intra8x8_pred_normal.o
> attempt to open ldecod_src/io_raw.o succeeded
> ldecod_src/io_raw.o
> attempt to open ldecod_src/img_io.o succeeded
> ldecod_src/img_io.o
> attempt to open ldecod_src/nalu.o succeeded
> ldecod_src/nalu.o
> attempt to open ldecod_src/quant.o succeeded
> ldecod_src/quant.o
> attempt to open ldecod_src/intra8x8_pred.o succeeded
> ldecod_src/intra8x8_pred.o
> attempt to open ldecod_src/erc_api.o succeeded
> ldecod_src/erc_api.o
> attempt to open ldecod_src/header.o succeeded
> ldecod_src/header.o
> attempt to open ldecod_src/biaridecod.o succeeded
> ldecod_src/biaridecod.o
> attempt to open ldecod_src/input.o succeeded
> ldecod_src/input.o
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libm.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libm.a failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libm.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libm.a failed
> attempt to open /lib/x86_64-linux-gnu/libm.so failed
> attempt to open /lib/x86_64-linux-gnu/libm.a failed
> attempt to open /lib/../lib64/libm.so failed
> attempt to open /lib/../lib64/libm.a failed
> attempt to open /usr/lib/x86_64-linux-gnu/libm.so succeeded
> opened script file /usr/lib/x86_64-linux-gnu/libm.so
> /usr/lib/x86_64-linux-gnu/libm.so
> opened script file /usr/lib/x86_64-linux-gnu/libm.so
> attempt to open /lib/x86_64-linux-gnu/libm.so.6 succeeded
> /lib/x86_64-linux-gnu/libm.so.6
> attempt to open /usr/lib/x86_64-linux-gnu/libmvec_nonshared.a succeeded
> /usr/lib/x86_64-linux-gnu/libmvec_nonshared.a
> attempt to open /lib/x86_64-linux-gnu/libmvec.so.1 succeeded
> /lib/x86_64-linux-gnu/libmvec.so.1
> /usr/lib/x86_64-linux-gnu/libmvec_nonshared.a
> /lib/x86_64-linux-gnu/libmvec.so.1
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc_s.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc_s.a failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so succeeded
> opened script file /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so
> opened script file /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so.1 succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so.1
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libc.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libc.a failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libc.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libc.a failed
> attempt to open /lib/x86_64-linux-gnu/libc.so failed
> attempt to open /lib/x86_64-linux-gnu/libc.a failed
> attempt to open /lib/../lib64/libc.so failed
> attempt to open /lib/../lib64/libc.a failed
> attempt to open /usr/lib/x86_64-linux-gnu/libc.so succeeded
> opened script file /usr/lib/x86_64-linux-gnu/libc.so
> /usr/lib/x86_64-linux-gnu/libc.so
> opened script file /usr/lib/x86_64-linux-gnu/libc.so
> attempt to open /lib/x86_64-linux-gnu/libc.so.6 succeeded
> /lib/x86_64-linux-gnu/libc.so.6
> attempt to open /usr/lib/x86_64-linux-gnu/libc_nonshared.a succeeded
> /usr/lib/x86_64-linux-gnu/libc_nonshared.a
> (/usr/lib/x86_64-linux-gnu/libc_nonshared.a)elf-init.oS
> attempt to open /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 succeeded
> /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
> /usr/lib/x86_64-linux-gnu/libc_nonshared.a
> /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc_s.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc_s.a failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so succeeded
> opened script file /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so
> opened script file /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so.1 succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../lib64/libgcc_s.so.1
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.so failed
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/libgcc.a
> attempt to open /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/crtend.o succeeded
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/crtend.o
> attempt to open /usr/lib/x86_64-linux-gnu/crtn.o succeeded
> /usr/lib/x86_64-linux-gnu/crtn.o
> ld-linux-x86-64.so.2 needed by /lib/x86_64-linux-gnu/libm.so.6
> found ld-linux-x86-64.so.2 at /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
> /home/gary/gcc_virgin_build/install/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/bin/ld: link errors found, deleting executable `ldecod_r'
> collect2: error: ld returned 1 exit status
> specmake: *** [/home/gary/spec/cpu2017/benchspec/Makefile.defaults:337: ldecod_r] Error 1
>
> Thanks
>
> Gary
>
>
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