mac silicon build dependencies?

[kleeuccs]

@BobbyRBruce

For MAC Silcone gem5 build, what dependencies from brew need to be installed? There isn't a build-essentials, but scons exists. I have python 3.11.x under pyenv. I also installed gcc.

~/srccode/github-repo/gem5 stable > scons --version node system 01:42:55 PM
SCons by Steven Knight et al.:
SCons: v4.5.2.120fd4f633e9ef3cafbc0fec35306d7555ffd1db, Tue, 21 Mar 2023 12:11:27 -0400, by bdbaddog on M1DOG2021
SCons path: ['/opt/homebrew/Cellar/scons/4.5.2/libexec/lib/python3.11/site-packages/SCons']
Copyright (c) 2001 - 2023 The SCons Foundation

After each upgrade of OS, I update xcode utilities.

After installing scons and gcc from brew, I see:
~/srccode/github-repo/gem5 stable > python which scons build/X86/gem5.opt -j9 32s node system 12:49:07 PM
Traceback (most recent call last):
File "/opt/homebrew/bin/scons", line 5, in
from SCons.Script.Main import main
ModuleNotFoundError: No module named 'SCons'

I didn't see any other scons modules that would help.

Any advice would be appreciated.

Thank you,

Ken Lee

[BobbyRBruce]

As this was more of a question I moved it to the Q&A discussions section. I hope you don't mind.

[BobbyRBruce]

It's always worth getting this out the way first: have you tried deleting the build directory with rm -rf build and going with scons build/X86/gem5.opt first?

Changing your environment (like updating the OS) can mean the build file needs wiped and to build from scratch.

[kleeuccs]

I removed pyenv from .zshrc, and installed python 3.11.4 as the system version of python.
For building on the mac M1, I get similar warnings and errors mentioned in #94.

ext/gdbremote/signals.hh:176:5: error: expected identifier
EXC_BREAKPOINT = 150, //breakpoint
^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/mach/exception_types.h:87:33: note: expanded from macro 'EXC_BREAKPOINT'
#define EXC_BREAKPOINT 6 /* Trace, breakpoint, etc. */
^
[ CXX] X86/python/_m5/param_BaseNonCachingSimpleCPU.cc -> .o
[SO Param] m5.objects.BaseTimingSimpleCPU, BaseTimingSimpleCPU -> X86/python/_m5/param_BaseTimingSimpleCPU.cc
44 warnings and 6 errors generated.
scons: *** [build/X86/cpu/o3/probe/elastic_trace.o] Error 1
44 warnings generated.
scons: building terminated because of errors.
*** Summary of Warnings ***
Warning: You can get a 12% performance improvement by installing tcmalloc (libgoogle-perftools-dev package on Ubuntu or RedHat).
Warning: Info: Compatible header file <linux/kvm.h> not found, disabling KVM support.
Warning: Header file <png.h> not found.
This host has no libpng library.
Disabling support for PNG framebuffers.
Warning: Can't find library for POSIX clocks.
Warning: Couldn't find HDF5 C++ libraries. Disabling HDF5 support.
Warning: Cannot enable KVM, host seems to lack KVM support

I will try merging #209, and see if that helps as suggested in post #94.

Thank you,

Ken Lee

[BobbyRBruce]

Excellent! I'm 99% sure #209 will fix that bug and you'll be fine, but let me know just to be sure.