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riscv-collab / riscv-gnu-toolchain

GNU toolchain for RISC-V, including GCC
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unrecognized option '--64' #1529

Closed EventScheduler closed 1 month ago

EventScheduler commented 1 month ago

Hi all, when I try to build riscv-gnu-toolchain, I got the following errors, who know why? commands are: export RISCV=/home/leiyu/source_code/tools/riscv/rocket-tools rm -rf build;mkdir build;cd build; ../configure --prefix=$RISCV --disable-gdb;make -j error output: g++ -c -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../../gcc/gcc -I../../../gcc/gcc/build -I../../../gcc/gcc/../include -I../../../gcc/gcc/../libcpp/include \ -o build/sort.o ../../../gcc/gcc/sort.cc echo timestamp > doc/gfdl.7 (pod2man --center="GNU" --release="gcc-12.2.0" --date=2022-08-19 --section=7 gfdl.pod > doc/gfdl.7.T$$ && \ mv -f doc/gfdl.7.T$$ doc/gfdl.7) || \ (rm -f doc/gfdl.7.T$$ && exit 1) echo timestamp > doc/gpl.7 (pod2man --center="GNU" --release="gcc-12.2.0" --date=2022-08-19 --section=7 gpl.pod > doc/gpl.7.T$$ && \ mv -f doc/gpl.7.T$$ doc/gpl.7) || \ (rm -f doc/gpl.7.T$$ && exit 1) echo timestamp > doc/fsf-funding.7 (pod2man --center="GNU" --release="gcc-12.2.0" --date=2022-08-19 --section=7 fsf-funding.pod > doc/fsf-funding.7.T$$ && \ mv -f doc/fsf-funding.7.T$$ doc/fsf-funding.7) || \ (rm -f doc/fsf-funding.7.T$$ && exit 1) echo timestamp > doc/gcov-tool.1 (pod2man --center="GNU" --release="gcc-12.2.0" --date=2022-08-19 --section=1 gcov-tool.pod > doc/gcov-tool.1.T$$ && \ mv -f doc/gcov-tool.1.T$$ doc/gcov-tool.1) || \ (rm -f doc/gcov-tool.1.T$$ && exit 1) echo timestamp > doc/gcov-dump.1 (pod2man --center="GNU" --release="gcc-12.2.0" --date=2022-08-19 --section=1 gcov-dump.pod > doc/gcov-dump.1.T$$ && \ mv -f doc/gcov-dump.1.T$$ doc/gcov-dump.1) || \ (rm -f doc/gcov-dump.1.T$$ && exit 1) echo timestamp > doc/lto-dump.1 (pod2man --center="GNU" --release="gcc-12.2.0" --date=2022-08-19 --section=1 lto-dump.pod > doc/lto-dump.1.T$$ && \ mv -f doc/lto-dump.1.T$$ doc/lto-dump.1) || \ (rm -f doc/lto-dump.1.T$$ && exit 1) ../../../gcc/gcc/gengtype-lex.l: In function ‘int yylex(const char**)’: gengtype-lex.cc:365:15: warning: this statement may fall through [-Wimplicit-fallthrough=]

define YY_DO_BEFORE_ACTION \


../../../gcc/gcc/gengtype-lex.l:118:1: note: in expansion of macro ‘YY_DO_BEFORE_ACTION’
 }
 ^
../../../gcc/gcc/gengtype-lex.l:113:1: note: here
 "~"     |
 ^~~~
gengtype-lex.cc:365:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define YY_DO_BEFORE_ACTION \
  ~~~~~~~~~~~~~^~~~~~~
../../../gcc/gcc/gengtype-lex.l:138:1: note: in expansion of macro ‘YY_DO_BEFORE_ACTION’
     ;
 ^   ~
../../../gcc/gcc/gengtype-lex.l:134:1: note: here
 "ENUM_BITFIELD"{WS}?"("{WS}?{ID}{WS}?")" {
 ^~~~
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/genversion.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/genchecksum.o] Error 1
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/errors.o] Error 1
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/gengenrtl.o] Error 1
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/genhooks.o] Error 1
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/sort.o] Error 1
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/gengtype-parse.o] Error 1
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/gengtype-lex.o] Error 1
/bin/sh ../../../gcc/gcc/../move-if-change tmp-optionlist optionlist
echo timestamp > s-options
/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2823: build/genmodes.o] Error 1
rm gcov.pod fsf-funding.pod gpl.pod cpp.pod gfdl.pod lto-dump.pod gcov-dump.pod gcov-tool.pod
make[2]: Leaving directory '/home/radl/hdd/leiyu/source_code/Inchi/rocket-tools/riscv-gnu-toolchain/build/build-gcc-newlib-stage1/gcc'
make[1]: *** [Makefile:4619: all-gcc] Error 2
make[1]: Leaving directory '/home/radl/hdd/leiyu/source_code/Inchi/rocket-tools/riscv-gnu-toolchain/build/build-gcc-newlib-stage1'
make: *** [Makefile:589: stamps/build-gcc-newlib-stage1] Error 2
TommyMurphyTM1234 commented 1 month ago

Please detail all of the commands used to reproduce this issue. All commands from the initial git clone, to the configure command to the make command. Also capture and attach (don't copy and paste) the build log. I built the toolchain yesterday as follows and didn't have any problems. 

git clone https://github.com/riscv-collab/riscv-gnu-toolchain
cd riscv-gnu-toolchain
./configure --prefix=`pwd`/installed-tools
make 2>&1 | tee build.log

If your issue is with something in the Rocket Chip repo then you need to report or discuss it there and not here.

As far as I know the rocket-tools stuff over there is deprecated and should not be used:

kito-cheng commented 1 month ago

I suspect you may put /home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/ into your path, you could check with echo $PATH

TommyMurphyTM1234 commented 1 month ago

I built the toolchain yesterday as follows and didn't have any problems.

git clone https://github.com/riscv-collab/riscv-gnu-toolchain
cd riscv-gnu-toolchain
./configure --prefix=`pwd`/installed-tools
make 2>&1 | tee build.log

I did this again just now and had no problems:

TommyMurphyTM1234 commented 1 month ago

I suspect you may put /home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/ into your path, you could check with echo $PATH

I tried this but it didn't reproduce the problem:

git clone https://github.com/riscv-collab/riscv-gnu-toolchain
cd riscv-gnu-toolchain
./configure --prefix=`pwd`/installed-tools --disable-gdb
make 2>&1 | tee build.log

export PATH=`pwd`/installed-tools/bin:$PATH
make distclean
./configure --prefix=`pwd`/installed-tools-2 --disable-gdb
make 2>&1 | tee build.log

Still needs full instructions/context on how to reproduce the issue.

TommyMurphyTM1234 commented 1 month ago

I built the toolchain yesterday as follows and didn't have any problems.

git clone https://github.com/riscv-collab/riscv-gnu-toolchain
cd riscv-gnu-toolchain
./configure --prefix=`pwd`/installed-tools
make 2>&1 | tee build.log

I did this again just now and had no problems:

BTW - there's also no occurrence of --64 anywhere in that build.log so if that's the root of the original issue then it's not at all clear where it's coming from. In any case, --64 does not seem to be a valid GCC option for any target architecture:

EventScheduler commented 1 month ago

I reproduced my issue with the following commands:

git clone https://github.com/riscv-collab/riscv-gnu-toolchain cd riscv-gnu-toolchain ./configure --prefix=pwd/installed-tools make 2>&1 | tee build.log

build.log

Thank you!

TommyMurphyTM1234 commented 1 month ago

I reproduced my issue with the following commands:

git clone https://github.com/riscv-collab/riscv-gnu-toolchain cd riscv-gnu-toolchain ./configure --prefix=pwd/installed-tools make 2>&1 | tee build.log

build.log

Thank you!

What is your PATH environment variable set to?

EventScheduler commented 1 month ago

This is my $PATH: /home/radl/hdd/leiyu/source_code/breker/from_felix/trek5-2.1.4-GCC6_el7/bin:/home/radl/hdd/leiyu/source_code/breker/from_felix/trek5-2.1.4-GCC6_el7/examples/tutorials/apps/coherency/bin:.:/home/radl/hdd/leiyu/source_code/tools/firtool-1.56.1/bin:/home/radl/hdd/leiyu/.local:/home/radl/hdd/leiyu/.local/bin:/home/leiyu/source_code/tools/riscv64-lp64d--glibc--stable-2024.02-1/bin:/home/radl/hdd/leiyu/.local/bin:/home/radl/hdd/leiyu/bin:/usr/share/Modules/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/leiyu/source_code/tools/synopsys/install_dir/vcs/T-2022.06/bin:/home/leiyu/source_code/tools/synopsys/install_dir/verdi/T-2022.06/bin:/home/leiyu/source_code/tools/synopsys/install_dir/scl/2021.12/linux64/bin

I've removed the "/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/" setting from $PATH before building.

TommyMurphyTM1234 commented 1 month ago

This part of your log makes no sense to me:

/bin/sh ../.././gcc/gcc/mkconfig.sh bconfig.h
g++ -c   -g -O2   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H  -DGENERATOR_FILE -I. -Ibuild -I../.././gcc/gcc -I../.././gcc/gcc/build -I../.././gcc/gcc/../include  -I../.././gcc/gcc/../libcpp/include  \
    -o build/genmodes.o ../.././gcc/gcc/genmodes.cc
/tmp/www/riscv-gnu-toolchain/installed-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2858: build/genmodes.o] Error 1
make[2]: Leaving directory '/tmp/www/riscv-gnu-toolchain/build-gcc-newlib-stage1/gcc'
make[1]: *** [Makefile:4627: all-gcc] Error 2
make[1]: Leaving directory '/tmp/www/riscv-gnu-toolchain/build-gcc-newlib-stage1'
make: *** [Makefile:636: stamps/build-gcc-newlib-stage1] Error 2
  1. I can't see where --64 is coming from and
  2. I have no idea why the attempt to compile genmodes.cc using the host's x86_64-pc-linux-gnu g++ seems to end up trying to call the RISC-V bare-metal assembler /tmp/www/riscv-gnu-toolchain/installed-tools/riscv64-unknown-elf/bin/as.

This is the equivalent part of my log:

/bin/bash ../.././gcc/gcc/mkconfig.sh bconfig.h
g++ -c   -g -O2   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H  -DGENERATOR_FILE -I. -Ibuild -I../.././gcc/gcc -I../.././gcc/gcc/build -I../.././gcc/gcc/../include  -I../.././gcc/gcc/../libcpp/include  \
    -o build/genmodes.o ../.././gcc/gcc/genmodes.cc
g++ -c   -g -O2   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H  -DGENERATOR_FILE -I. -Ibuild -I../.././gcc/gcc -I../.././gcc/gcc/build -I../.././gcc/gcc/../include  -I../.././gcc/gcc/../libcpp/include  \
    -o build/errors.o ../.././gcc/gcc/errors.cc

You seem to be using Red Hat Enterprise Linux 8 - is that correct? I'm not sure if that is available for download for me to try. And I'm not sure if alternatives such as CentOS or Rocky Linux would be directly comparable?

I thought that enabling verbose logging for C++ might help here and give more details about what's happening with your failing build but that made my own previously successful build fail for some reason,,,

make distclean && rm -rf installed-tools
make CXXFLAGS_FOR_TARGET_EXTRA=-v 2>&1 | tee build.log

...

/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/cc1plus -quiet -nostdinc++ -v -I /home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/../libgcc -I /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/include/riscv64-unknown-elf -I /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/include -I /home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/libsupc++ -imultilib . -iprefix /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/riscv64-unknown-elf/14.2.1/ -isysroot /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../riscv64-unknown-elf -isystem /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/include -isystem /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/include-fixed -isystem /home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/include -isystem /home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/sys-include /home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/src/c++11/cxx11-ios_failure.cc -quiet -dumpbase cxx11-ios_failure.cc -dumpbase-ext .cc -mcmodel=medlow -mtune=rocket -march=rv64imafdc_zicsr -mabi=lp64d -misa-spec=20191213 -march=rv64imafdc_zicsr -gno-as-loc-support -Os -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi=2 -std=gnu++11 -version -fno-implicit-templates -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -frandom-seed=cxx11-ios_failure-lt.s -o cxx11-ios_failure.s
GNU C++11 (g897cd794d) version 14.2.1 20240809 (riscv64-unknown-elf)
        compiled by GNU C version 11.4.0, GMP version 6.2.1, MPFR version 4.1.0, MPC version 1.2.1, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/sys-include"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/riscv64-unknown-elf/14.2.1/include"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/riscv64-unknown-elf/14.2.1/include-fixed"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/riscv64-unknown-elf/14.2.1/../../../../riscv64-unknown-elf/include"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/../../lib/gcc/riscv64-unknown-elf/14.2.1/include"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../riscv64-unknown-elf/usr/local/include"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/../../lib/gcc/riscv64-unknown-elf/14.2.1/include-fixed"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../lib/gcc/../../lib/gcc/riscv64-unknown-elf/14.2.1/../../../../riscv64-unknown-elf/include"
ignoring nonexistent directory "/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/gcc/../riscv64-unknown-elf/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/../libgcc
 /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/include/riscv64-unknown-elf
 /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/include
 /home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/libsupc++
 /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/include
 /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/include-fixed
 /home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/include
End of search list.
Compiler executable checksum: f57d3381077a6b75bf247c6cce7d6f56
COMPILER_PATH=/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/:/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/bin/:/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/lib/
LIBRARY_PATH=/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/:/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/bin/:/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/lib/
COLLECT_GCC_OPTIONS='-shared-libgcc' '-B' '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc' '-nostdinc++' '-L/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/src' '-L/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/src/.libs' '-L/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/libsupc++/.libs' '-B' '/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/bin/' '-B' '/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/lib/' '-isystem' '/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/include' '-isystem' '/home/user/Downloads/issue-1529/installed-tools/riscv64-unknown-elf/sys-include' '-I' '/home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/../libgcc' '-I' '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/include/riscv64-unknown-elf' '-I' '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/include' '-I' '/home/user/Downloads/issue-1529/gcc-14/libstdc++-v3/libsupc++' '-std=gnu++11' '-fno-implicit-templates' '-Wall' '-Wextra' '-Wwrite-strings' '-Wcast-qual' '-Wabi=2' '-fdiagnostics-show-location=once' '-ffunction-sections' '-fdata-sections' '-frandom-seed=cxx11-ios_failure-lt.s' '-Os' '-v' '-mcmodel=medlow' '-gno-as-loc-support' '-S' '-mtune=rocket' '-march=rv64imafdc_zicsr' '-mabi=lp64d' '-misa-spec=20191213' '-march=rv64imafdc_zicsr'
libtool: compile: mv -f "cxx11-ios_failure.o" "tmp-cxx11-ios_failure-lt.o"
mv: cannot stat 'cxx11-ios_failure.o': No such file or directory
make[6]: *** [Makefile:899: cxx11-ios_failure-lt.s] Error 1
make[6]: Leaving directory '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/src/c++11'
make[5]: *** [Makefile:797: all-recursive] Error 1
make[5]: Leaving directory '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/src'
make[4]: *** [Makefile:577: all-recursive] Error 1
make[4]: Leaving directory '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3'
make[3]: *** [Makefile:502: all] Error 2
make[3]: Leaving directory '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3'
make[2]: *** [Makefile:12244: all-target-libstdc++-v3] Error 2
make[2]: Leaving directory '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2'
make[1]: *** [Makefile:1055: all] Error 2
make[1]: Leaving directory '/home/user/Downloads/issue-1529/build-gcc-newlib-stage2'
make: *** [Makefile:742: stamps/build-gcc-newlib-stage2] Error 2

For this failure I don't undestand this - why is it trying to output an assembly languange file but then tries to move an object file?

 /home/user/Downloads/issue-1529/build-gcc-newlib-stage2/./gcc/cc1plus ... -o cxx11-ios_failure.s
...
libtool: compile: mv -f "cxx11-ios_failure.o" "tmp-cxx11-ios_failure-lt.o"
mv: cannot stat 'cxx11-ios_failure.o': No such file or directory

Unfortunately, at the moment I have no idea why your build fails the way that it does...

TommyMurphyTM1234 commented 1 month ago

Are you absolutely sure about this?

I've removed the "/home/leiyu/source_code/tools/riscv/rocket-tools/riscv64-unknown-elf/bin/" setting from $PATH before building.

This log output suggests otherwise and it looks like the native x86_64 compiler is incorrectly invoking the RISC-V assembler:

/bin/sh ../.././gcc/gcc/mkconfig.sh bconfig.h
g++ -c   -g -O2   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H  -DGENERATOR_FILE -I. -Ibuild -I../.././gcc/gcc -I../.././gcc/gcc/build -I../.././gcc/gcc/../include  -I../.././gcc/gcc/../libcpp/include  \
  -o build/genmodes.o ../.././gcc/gcc/genmodes.cc
/tmp/www/riscv-gnu-toolchain/installed-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'
make[2]: *** [Makefile:2858: build/genmodes.o] Error 1
make[2]: Leaving directory '/tmp/www/riscv-gnu-toolchain/build-gcc-newlib-stage1/gcc'
make[1]: *** [Makefile:4627: all-gcc] Error 2
make[1]: Leaving directory '/tmp/www/riscv-gnu-toolchain/build-gcc-newlib-stage1'
make: *** [Makefile:636: stamps/build-gcc-newlib-stage1] Error 2
TommyMurphyTM1234 commented 1 month ago

OK - so the x86 assembler does take a --64 option:

So it's almost certainly a case of your setup having the RISC-V assembler on the PATH and the x86_64 g++ invoking that instead of the native x86_64 one as originally suggested by @kito-cheng above. But I don't know why this doesn't cause any problems earlier and only fails on the specific file that it stops at in your log.

Even if you have removed the RISC-V tools from your PATH when you invoke the toolchain build it may be that subsequent shells forked by the Makefile are using the original PATH pointing to those tools e.g. from some configuration file such as the shell specific rc file (e.g. ~/.bashrc if /bin/sh is a link to /bin/bash or /etc/bash/bashrc or /etc/profile etc.).

You probably need to clean up your setup/environment so that you are certain that you have eliminated the RISC-V tools from the PATH. One way to confirm this hypothesis might be to create a new user account, log into that and see if the tools build OK there. Assuming, of course, that any PATH pointing to the RISC-V tools isn't a global configuration setting applying to all user accounts.

EventScheduler commented 1 month ago

Yes, you're right, there are some RISCV tools in "/home/radl/hdd/leiyu/source_code/breker/from_felix/trek5-2.1.4-GCC6_el7/bin:/home/radl/hdd/leiyu/source_code/breker/from_felix/trek5-2.1.4-GCC6_el7/examples/tutorials/apps/coherency/bin" directories, and the "--64" issue disappered when I removed these two directories from PATH. Thank you for your kindly help!