Building Chromium

[Wowfunhappy]

I finally have a VM set up on a new enough version of macOS to build Chromium, so I'm trying to run Bluebox's build script.

It appears to have successfully downloaded all of the dependencies, but the build is failing. I think ld is angry that the deployment target is set to 10.7?

ld: warning: building for macOS 10.7.0 is deprecated
ld: fatal warning(s) induced error (-fatal_warnings)

I assume I need to turn off -fatal_warnings, but Chromium's build system is so complicated, I can't actually tell where to change that! Any pointers?

Full Terminal output from the build script is attached. I'm sure this won't be the last roadblock, but one step at a time...
Saved Terminal Output 2021.07.30.txt

[blueboxd]

Oh, I didn't know about that warning...which Xcode are you using for the build?
(Sorry, I use macOS 10.14 and Xcode 11.3.1 with modified SDK for a daily build, and tested build script only on early macOS 10.15 and Xcode 11)

I'm still not familiar with highly complicated Chromium's build system, but full text search shows -fatal_warnings seems specified here:

chromium-legacy/build/config/compiler/BUILD.gn

Line 361 in c01d806

ldflags += [ "-Wl,-fatal_warnings" ]

Or, you can specify 10.9 for build target by changing mac_deployment_target and mac_min_system_version on chromium-project/chromium-legacy/out/release/args.gn.

[blueboxd]

For temporal solution, change @property (nonatomic, strong) to @property (nonatomic, assign).
This is the last error on my environment (Xcode 12.4, MacOSX11.1.sdk).

[Wowfunhappy]

Thank you!

Do you know how I can do an incremental build to continue where I left off? The script doesn't seem to work unless I delete everything and start over.

[blueboxd]

Oh, sorry!
At src, ninja -C ../out/release chrome to build.
Please refer Building for details.

[Wowfunhappy]

Woke up this morning to a self-compiled, fully working copy of Chromium legacy! (It took seven hours, but that's to be expected in a VM running on top of a 4790K.) Thanks for your help!

[blueboxd]

Wow! Welcome to deep, deep Chromium sea! 🎉

[bazilio-ua]

Hi! There is an any chances to build chromium legacy for Mac OS X 10.6.8 Snow Leopard?

[blueboxd]

Yes, you can complete the build process for 10.6 with some workarounds (modifications to source and macOS SDK).
But resulted binary is not usable on 10.6 because of many unavailable APIs compared to 10.7.
Maybe some of these APIs are not used, but I think many of these are essential.
And, libc++ is not available on 10.6, so you also need workarounds for that.
(simply copying libc++.dylib to 10.6 not working)

FYI, the list of unavailable APIs is attached.

[Wowfunhappy]

On MacRumors, @kencu mentioned wanting to look into adding Snow Leopard support, not sure if he ever had a chance. That list is actually a lot less bad than I would have expected; it looks like you could get a long way by disabling nonessential features like full screen mode and WebBluetooth.

[Wowfunhappy]

Fwiw, MacPorts has a working libc++.dylib for 10.6 which it uses extensively. It’s much newer than 10.7! Sent from my phone, please excuse typos.

…

On Oct 15, 2021, at 5:18 PM, blueboxd ***@***.***> wrote: Yes, you can complete the build process for 10.6 with some workarounds (modifications to source and macOS SDK). But resulted binary is not usable on 10.6 because of many unavailable APIs compared to 10.7. Maybe some of these APIs are not used, but I think many of these are essential. And, libc++ is not available on 10.6, so you also need workarounds for that. (simply copying libc++.dylib to 10.6 not working) FYI, the list of unavailable APIs is attached. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.

[blueboxd]

Ah, then, libc++.dylib is not a problem!

[kencu]

Hmm. That is indeed quite a list of missing APIs... I think the toolchain and libc++ needs are met by MacPorts tooling -- but the SDK and System roots just might not be up to the task. It would take a bit of actually digging to see how many of these can be worked around, and it looks like no small task!

I have not as yet tried to dive in on SnowLeopard as yet. It would sure be nice to have, but might be a touch out of reach...

Really really good job getting this going on 10.7+ by the way! Much appreciated!

[blueboxd]

Thanks!
And sorry for the late reply 🙇

Thanks to the well-separated architecture between core browser components and OS-dependent ones, actual resulting patches for 10.7 were easier than I had imagined 🤔
(initially about 50 files excl. UI workarounds)

But we can investigate truly essential symbols only on a trial and error basis, and the build-run-error cycle (especially build) is extremely time-consuming 🤯
You may need much time (and CPU power!) for the battle with undefined symbols...

You might want to start with a version not so far from dropped support for SL (like 60?).
(Looking back at my coward process, it seems that I started at 53 then ​tried some 5x, 65, 69, 72, 75 and went to trunk)

[Wowfunhappy]

@blueboxd Has the build process changed at all since the summer?

I had to remove use_lld = false to generate build files. Then, I had to manually copy the chrome-mac-main-*.profdata from chromium-legacy/src/chrome/build/pgo_profiles to chromium-legacy/src/build/config/src/chrome/build/pgo_profiles, because the compiler was complaining it couldn't find it. Both were easy enough, but make me think something is wrong.

Unfortunately, I then began receiving errors about missing header files. E.g.:

../../src/third_party/crc32c/src/src/./crc32c_sse42.h:10:10: fatal error: 'cstddef' file not found
../../src/third_party/boringssl/src/include/openssl/base.h:494:10: fatal error: 'memory' file not found
../../src/third_party/ced/src/compact_enc_det/compact_enc_det_hint_code.h:20:10: fatal error: 'string' file not found

VM is running macOS 11.0.1 and Xcode 12.5.1. I've tried using both MacOSX11.3.sdk and MacOSX12.1.sdk.

[Wowfunhappy]

I am surprised they would give up on LTO, however -- for something like chromium you would think they would really want to squeeze every cycle out of it.

I think they do use it now. Or "ThinLTO", anyway. https://github.com/chromium/chromium/blob/d2266c59f0dd1f4273c989fd19e5d3e03029691f/build/config/compiler/BUILD.gn#L132. Seems to have been added in December. I assume that's also what broke the build script.

Anyway, my conclusion for now is that leaving use_lld = false but adding use_thin_lto = false is in fact the correct thing to do for Chromium Legacy. I ran gn clean ../out/release then started the compilation over, and it seems to have gotten further already.

[Wowfunhappy]

Sigh, still running into issues with ld:

ld: warning: building for macOS 10.7.0 is deprecated
duplicate symbol 'std::__1::__get_sp_mut(void const*)' in:
    obj/v8/v8_internal_headers/sp_mut.o
    obj/buildtools/third_party/libc++/libc++/memory.o
duplicate symbol 'std::__1::__sp_mut::unlock()' in:
    obj/v8/v8_internal_headers/sp_mut.o
    obj/buildtools/third_party/libc++/libc++/memory.o
duplicate symbol 'std::__1::__sp_mut::lock()' in:
    obj/v8/v8_internal_headers/sp_mut.o
    obj/buildtools/third_party/libc++/libc++/memory.o
ld: 3 duplicate symbols for architecture x86_64
clang-12: error: linker command failed with exit code 1 (use -v to see invocation)
Traceback (most recent call last):
  File "../../src/build/toolchain/apple/linker_driver.py", line 341, in <module>
    LinkerDriver(sys.argv).run()
  File "../../src/build/toolchain/apple/linker_driver.py", line 117, in run
    subprocess.check_call(compiler_driver_args, env=env)
  File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/subprocess.py", line 364, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['../../../clang-master/bin/clang++', '-B', '/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/', '-arch', 'x86_64', '-nostdlib++', '-isysroot', '../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk', '-mmacosx-version-min=10.7', '-Wl,-ObjC', '-Wl,-dead_strip', '-Wl,-no_data_in_code_info', '-Wl,-no_function_starts', '-o', './mksnapshot', '@./mksnapshot.rsp']' returned non-zero exit status 1.
[18918/50613] CXX obj/google_apis/gcm/proto/mcs.pb.o

[Wowfunhappy]

Built!

So, the reason Chromium was looking for stdlibc headers was because of chromium@672ec2f

I added those flags back to BUILD.gn in the exact same spot where they used to be, and everything worked!

[kencu]

excellent find.

[Wowfunhappy]

Unfortunately, while my builds work on 10.9, they appear to crash on launch on 10.7. (No code changes.) Crash logs would appear to implicate libc++ somehow.

Hopefully I won't need to test anything 10.7-specific...

Crash Log

Process: Chromium [682]
Path: /Users/USER/Desktop/Chromium.app/Contents/MacOS/Chromium
Identifier: org.chromium.Chromium
Version: 101.0.4930.0 (4930.0)
Code Type: X86-64 (Native)
Parent Process: launchd [119]

Date/Time: 2022-03-11 11:27:26.020 -0500
OS Version: Mac OS X 10.7.5 (11G63)
Report Version: 9

Interval Since Last Report: 2752 sec
Crashes Since Last Report: 3
Per-App Crashes Since Last Report: 3
Anonymous UUID: 94473607-D1A8-4E41-9332-9E628E139E11

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

Application Specific Information:
abort() called
objc[682]: garbage collection is OFF

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff88bf882a __kill + 10
1 libsystem_c.dylib 0x00007fff8bb38a9c abort + 177
2 org.chromium.Chromium 0x000000010bc6f59c (anonymous namespace)::FatalError(char const*, ...) + 252
3 org.chromium.Chromium 0x000000010bc6f48a main + 282
4 org.chromium.Chromium 0x000000010bc6f364 start + 52

Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x00007fff6b86ab60 rcx: 0x00007fff6b86ab48 rdx: 0x0000000000000000
rdi: 0x00000000000002aa rsi: 0x0000000000000006 rbp: 0x00007fff6b86ab70 rsp: 0x00007fff6b86ab48
r8: 0x000000010bc92a00 r9: 0x0000000000000000 r10: 0x00007fff88bf9e62 r11: 0xffffff80002dad60
r12: 0x000000010bd09f50 r13: 0x00007fde7b007400 r14: 0x000000010bc6fc8a r15: 0x00007fff6b86ab80
rip: 0x00007fff88bf882a rfl: 0x0000000000000206 cr2: 0x000000010bca9000
Logical CPU: 0

Binary Images:
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0x7fff6b86c000 - 0x7fff6b8a0baf dyld (195.6 - ???) /usr/lib/dyld
0x7fff802b3000 - 0x7fff80329ff7 libc++.1.dylib (28.4.0 - compatibility 1.0.0) /usr/lib/libc++.1.dylib
0x7fff80333000 - 0x7fff8039eff7 com.apple.framework.IOKit (2.0 - ???) /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x7fff809ed000 - 0x7fff809f2fff com.apple.OpenDirectory (10.7 - 146) <7960A302-F9AC-3F72-838E-3A382032DCA6> /System/Library/Frameworks/OpenDirectory.framework/Versions/A/OpenDirectory
0x7fff80b23000 - 0x7fff80b29fff libmacho.dylib (800.0.0 - compatibility 1.0.0) /usr/lib/system/libmacho.dylib
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0x7fff83809000 - 0x7fff8380dfff libdyld.dylib (195.5.0 - compatibility 1.0.0) /usr/lib/system/libdyld.dylib
0x7fff838d9000 - 0x7fff839d6ff7 com.apple.avfoundation (2.0 - 180.50) /System/Library/Frameworks/AVFoundation.framework/Versions/A/AVFoundation
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0x7fff888dc000 - 0x7fff888e2fff com.apple.DiskArbitration (2.4.1 - 2.4.1) /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x7fff889ce000 - 0x7fff889cfff7 libsystem_blocks.dylib (53.0.0 - compatibility 1.0.0) <8BCA214A-8992-34B2-A8B9-B74DEACA1869> /usr/lib/system/libsystem_blocks.dylib
0x7fff88a41000 - 0x7fff88be1ff7 com.apple.QuartzCore (1.7 - 270.5) <19E5E0AB-DAA9-3F97-988C-D9A46AFB9C04> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
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0x7fff88dbc000 - 0x7fff88dbdfff libunc.dylib (24.0.0 - compatibility 1.0.0) /usr/lib/system/libunc.dylib
0x7fff890dc000 - 0x7fff890e7ff7 com.apple.bsd.ServiceManagement (2.0 - 2.0) /System/Library/Frameworks/ServiceManagement.framework/Versions/A/ServiceManagement
0x7fff89222000 - 0x7fff893f6ff7 com.apple.CoreFoundation (6.7.2 - 635.21) <62A3402E-A4E7-391F-AD20-1EF20236CE1B> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x7fff89c54000 - 0x7fff89c54fff com.apple.ApplicationServices (41 - 41) <03F3FA8F-8D2A-3AB6-A8E3-40B001116339> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
0x7fff8a27b000 - 0x7fff8a285ff7 liblaunch.dylib (392.39.0 - compatibility 1.0.0) <8C235D13-2928-30E5-9E12-2CC3D6324AE2> /usr/lib/system/liblaunch.dylib
0x7fff8a286000 - 0x7fff8a286fff com.apple.Carbon (153 - 153) <895C2BF2-1666-3A59-A669-311B1F4F368B> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
0x7fff8a50b000 - 0x7fff8a50cfff libdnsinfo.dylib (395.11.0 - compatibility 1.0.0) <853BAAA5-270F-3FDC-B025-D448DB72E1C3> /usr/lib/system/libdnsinfo.dylib
0x7fff8a77a000 - 0x7fff8a7bcff7 libcommonCrypto.dylib (55010.0.0 - compatibility 1.0.0) /usr/lib/system/libcommonCrypto.dylib
0x7fff8a887000 - 0x7fff8a8e2fff com.apple.ImageCaptureCore (3.1.0 - 3.1.0) <9F7C4D81-5CC7-3D66-AC66-81EA9A5EAB94> /System/Library/Frameworks/ImageCaptureCore.framework/Versions/A/ImageCaptureCore
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0x7fff8aa3f000 - 0x7fff8aa40fff libDiagnosticMessagesClient.dylib (??? - ???) <3DCF577B-F126-302B-BCE2-4DB9A95B8598> /usr/lib/libDiagnosticMessagesClient.dylib
0x7fff8ab0a000 - 0x7fff8ab19fff com.apple.opengl (1.8.1 - 1.8.1) <51B34133-CEE3-3FC6-82AC-ADF567AE673C> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
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0x7fff8b9d3000 - 0x7fff8ba21fff libauto.dylib (??? - ???) /usr/lib/libauto.dylib
0x7fff8ba22000 - 0x7fff8ba23ff7 libsystem_sandbox.dylib (??? - ???) <5459F293-E1F2-33B3-B9B2-2ABB7B915B62> /usr/lib/system/libsystem_sandbox.dylib
0x7fff8baf2000 - 0x7fff8baf6fff libmathCommon.A.dylib (2026.0.0 - compatibility 1.0.0) /usr/lib/system/libmathCommon.A.dylib
0x7fff8baf7000 - 0x7fff8bbd4fef libsystem_c.dylib (763.13.0 - compatibility 1.0.0) <41B43515-2806-3FBC-ACF1-A16F35B7E290> /usr/lib/system/libsystem_c.dylib
0x7fff8bbf2000 - 0x7fff8bc04ff7 libz.1.dylib (1.2.5 - compatibility 1.0.0) <30CBEF15-4978-3DED-8629-7109880A19D4> /usr/lib/libz.1.dylib
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0x7fff8bff3000 - 0x7fff8bff8fff libcache.dylib (47.0.0 - compatibility 1.0.0) /usr/lib/system/libcache.dylib
0x7fff8c0f4000 - 0x7fff8c1d8e5f libobjc.A.dylib (228.0.0 - compatibility 1.0.0) <871E688B-CF57-3BC7-80D6-F6476DFF109B> /usr/lib/libobjc.A.dylib
0x7fff8c1d9000 - 0x7fff8c1dbfff libquarantine.dylib (36.7.0 - compatibility 1.0.0) <8D9832F9-E4A9-38C3-B880-E5210B2353C7> /usr/lib/system/libquarantine.dylib
0x7fff8c490000 - 0x7fff8c496ff7 libunwind.dylib (30.0.0 - compatibility 1.0.0) <1E9C6C8C-CBE8-3F4B-A5B5-E03E3AB53231> /usr/lib/system/libunwind.dylib
0x7fff8d1ec000 - 0x7fff8d1edff7 libremovefile.dylib (21.1.0 - compatibility 1.0.0) <739E6C83-AA52-3C6C-A680-B37FE2888A04> /usr/lib/system/libremovefile.dylib

External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 1
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 354
thread_create: 0
thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=79.6M resident=48.8M(61%) swapped_out_or_unallocated=30.8M(39%)
Writable regions: Total=17.4M written=64K(0%) resident=192K(1%) swapped_out=0K(0%) unallocated=17.2M(99%)

REGION TYPE VIRTUAL
=========== =======
MALLOC 9396K
MALLOC guard page 16K
STACK GUARD 56.0M
Stack 8192K
__DATA 5124K
__IMAGE 528K
__LINKEDIT 49.0M
__TEXT 30.6M
__UNICODE 544K
shared memory 12K
=========== =======
TOTAL 158.8M

Model: VMware7,1, BootROM VMW71.00V.0.B64.1706210604, 1 processor, 3.82 GHz, 2 GB, SMC 1.16f8
Graphics: Display, PCI, 128 MB
Memory Module: RAM slot #0/RAM slot #0, 2 GB, DRAM, 0 MHz, VMware Virtual RAM, VMW-2048MB
Bluetooth: Version 4.0.8f17, 2 service, 18 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: VMware Virtual SATA Hard Drive, 42.95 GB
Serial ATA Device: VMware Virtual SATA CDRW Drive
USB Device: VMware Virtual USB Video Device, 0x0e0f (VMWare, Inc.), 0x000b, 0x02100000 / 2
USB Device: VMware Virtual USB Hub, 0x0e0f (VMWare, Inc.), 0x0002, 0x11200000 / 3
USB Device: Virtual Bluetooth Adapter, 0x0e0f (VMWare, Inc.), 0x0008, 0x11220000 / 5
USB Device: VMware Virtual USB Keyboard, apple_vendor_id, 0x020b, 0x11210000 / 4
USB Device: VMware Virtual USB Mouse, 0x0e0f (VMWare, Inc.), 0x0003, 0x11100000 / 2

[Wowfunhappy]

I've documented what I had to do to build Chromium at the bottom of the wiki page. https://github.com/blueboxd/chromium-legacy/wiki/Building

Eventually, this should probably be integrated into the main instructions, but I wanted someone (Bluebox) to confirm they were the right things to do!

[blueboxd]

Thanks! and sorry for being away.

Some modifications were applied to build parameters.
(e.g. Chromium-legacy is now built with bundled libc++)
I'll update Building wiki and scripts later.