[BUG] LTO errors on source compilation

[LukeKolin]

I am attempting to compile the source tarball and am getting a link error when running make install:

lto1: fatal error: bytecode stream in file ‘threads_mngr.o’ generated with LTO version 6281.0 instead of the expected 6.3

I compile using the following bash script:

`#!/bin/bash

export CC=/usr/bin/gcc
export CX=/usr/bin/g++
export CFLAGS="-march=native -mtune=native -DUSE_PROCESSOR_CLOCK"

nice make USE_SYSTEMD=1`

The initial make succeeds correctly, with the following last few lines...

` CC commands.o
CC strl.o
CC connection.o
CC unix.o
CC logreqres.o
LINK valkey-server
INSTALL valkey-sentinel
CC valkey-cli.o
CC serverassert.o
CC cli_common.o
CC cli_commands.o
LINK valkey-cli
CC valkey-benchmark.o
LINK valkey-benchmark
INSTALL valkey-check-rdb
INSTALL valkey-check-aof

Hint: It's a good idea to run 'make test' ;)

make[1]: Leaving directory '/usr/src/valkey-8.0.0/src'`

When I attempt to execute make install, I get the following:

cd src && make install make[1]: Entering directory '/usr/src/valkey-8.0.0/src' CC Makefile.dep CC release.o LINK valkey-server lto1: fatal error: bytecode stream in file ‘threads_mngr.o’ generated with LTO version 6281.0 instead of the expected 6.3 compilation terminated. lto-wrapper: fatal error: cc returned 1 exit status compilation terminated. /usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld: error: lto-wrapper failed collect2: error: ld returned 1 exit status make[1]: *** [Makefile:489: valkey-server] Error 1 make[1]: Leaving directory '/usr/src/valkey-8.0.0/src' make: *** [Makefile:9: install] Error 2

I suspect this is to do with my gcc config but at a loss where to start. I have done a 'make distclean' without any effect.

[madolson]

I haven't seen an issue like this before. Can you try doing make clean && make distclean && make install and see if it works with everything fresh? I wasn't able to reproduce it, and it seems like some weird versioning issue.

[LukeKolin]

It's really odd. I tried compiling 8.0.1 with GCC 7.5 since it's the standard on OpenSUSE 15.6, and it worked fine.

I then attempted to recompile with GCC 13, with the following instructions:

export CC=/usr/bin/gcc
export CFLAGS="-march=native -mtune=native -DUSE_PROCESSOR_CLOCK"
make clean && make distclean && make install USE_REDIS_SYMLINKS=0 USE_SYSTEMD=1

... and all is well with the world. However, if I try and put an LTO value into CFLAGS (say, -flto=4), then it breaks with an error like above. Not sure if that helps you track things down. I think I am good. I'll try it on an ARM64 instance I have to see if it makes a difference.

Thank you, by the way, for your response. I suspected this was mostly PEBCAK and appreciate your patience.