[FIXED] El Capitan (10.11 beta): GDB no longer usable ...

[Hansaplast]

I'm running El Capitan (10.11) beta 3 and have noticed that GDB can no longer be used.
So far I had been lucky using an old GDB version from XCode (link), whick still worked with 10.10.

Unfortunately, in 10.11 /usr/bin/ has been made read only, even for root ... even when disabling rootless mode. (HomeBrew users will run into a similar issue, see Apple Stackexchange)

I'm fully aware that I'm running a beta OS, which comes with it's problem for sure.
Maybe somebody knows a fix, maybe not ... and if not; then at least let this a warning before switching to "El Capitan" ... :-)

I assume either a HomeBrew work around is needed, or LLDB support is needed.


Because El Capitan seems to have removed previously installed files fro several /usr/ locations, I cannot even get anything compiled (probably waiting for XCode 7 w/Commandline tools).

[Jonas Maebe]

Unfortunately, in 10.11 /usr/bin/ has been made read only, even for root ...

You should never install something yourself in /usr/bin on any OS X version, it always belonged to the system.

Maybe somebody knows a fix, maybe not ... and if not; then at least let this a warning before switching to "El Capitan" ... :-)

gdb does not need to be installed in /usr/bin (unless you directly copy the binary from a previous OS version, but that's something which is never supported anyway).

I assume either a HomeBrew work around is needed, or LLDB support is needed.

HomeBrew by default installs in /usr/local/bin, which is completely different from /usr/bin and which should still be writeable in OS X 10.11.

Because El Capitan seems to have removed previously installed files fro several /usr/ locations, I

Every OS X update removes the Apple developer tools installed under previous versions from /usr/*, because they are generally not compatible with newer OS X versions. I've never known them to remove things you installed yourself (unless you, wrongly, put them in /usr/bin instead of in /usr/local/bin etc).

cannot even get anything compiled (probably waiting for XCode 7 w/Commandline tools).

You should probably have a look at the *comments* under the first answer at http://superuser.com/questions/940874/homebrew-doesnt-install-new-apps-in-el-capitan

[Hansaplast]

Thanks Jonas!


Yeah, you're probably right about /usr/bin, just didn't know any easier way to get GDB to work.
I'll read up on the HomeBrew version ... (if I recall correctly, there is a GDB that comes with HomeBrew)

[Hansaplast]

Well, thanks to Jonas, you made me think about "/usr/local/bin" ... I've got a working solution!

I tried HomeBrew and MacPorts, but both failed in El Capitan (they do not support a pre-release OS - which make perfect sense) and I'm not educated enough on the topic to fix it.

I did however manage to get the GDB from XCode 4.x to work again.
Probably not the best or cleanest method, but most certainly the easiest, quickest and a working method.

For this I took the “gdb-i386-apple-darwin” file (in /usr/libexec/gdb) and renamed it to “gdb”. After that I copy it into “/usr/local/bin”, and that works!


Even breakpoints and stepping through code works like a charm.


You can download that version at Tweaking4All, I tried to upload it as an attachment but it failed, and I'm not 100% sure how appropriate that would be.

[marcelohalpern]

Hey Hansaplast,

I've been trying to use your method to fix the same problem wile compiling with Lazarus / El Capitan.

When running, I get:
Compile Project, Target: project1: Exit code 1, Errors: 1
Fatal: Compilation aborted

Already tried to rename "gdb-i386-apple-darwin" to "gdb" and copy it to “/usr/local/bin”, like you said so, but no success at all (Fatal: Compilation aborted still goes on). Any ideas? Please help.

Thanks,
Halpern

For the record, I'm running:
- OSX 10.11 (15A284) - El Capitan
- XCode7.0.1 (7A1001)
- Command_Line_Tools_OS_X_10.10_for_Xcode_7.1_beta_2
- Lazarus 1.4.2 - FPC V. 2.6.4 i386 - darwin - carbon

[herux]

You should read this http://forum.lazarus.freepascal.org/index.php/topic,29724.msg188331.html#msg188331, for a temporary solution

[Hansaplast]

I've tried MacPorts before, but at the time it did not support El Capitan yet (for obvious reasons).
I do see that MacPorts supports El Capitan now (see: Installing MacPorts).


@marcelohalpern;


I'm not an expert, unfortunately, by the method described worked, and is still working for me.
Is everything working OK with de debugger completely disabled (in Lazarus)?

[marcelohalpern]

Hey guys,

still can't get it to work.
Already tried to change the debugging to Dwarf 2, such as installing GDB using Macports.

I just don't know whats going on.

Any ideias?
Thanks,
Halpern

[skalogryz]

what is the error message you're getting?

[marcelohalpern]

Compiling package FCL 1.0.1: Exit code 1, Errors: 1
Fatal: Compilation aborted

thanks!

[skalogryz]

Compiling package FCL 1.0.1: Exit code 1, Errors: 1
Fatal: Compilation aborted

FCL...huh... can you compile a simple "hello world" program from Terminal (without Lazarus)?

[marcelohalpern]

Not sure If I know how to do that.
Sorry, noob over here.

[skalogryz]

sure. Here're some steps.

Open Lazarus.
In the application menu hit "Project ->New Project"
Select "Simple Program"
write the text of the program to look like this:

Code: [Select]

begin
  writeln('hello world');
end.
Save it. Don't compile. (though you can try to!)
Close Lazarus
Open Terminal application (could be under Utilities).
In terminal "cd" to the directory where you saved the project.
There compile the project with FPC (it's likely lazarus will name the project file with .lpr extension)

Code: [Select]

  fpc project1.lpr
See compiler output.

[marcelohalpern]

This is what I've got.
(the name of the file is Help.pr)

Free Pascal Compiler version 2.6.4 [2014/02/26] for i386
Copyright (c) 1993-2014 by Florian Klaempfl and others
Target OS: Darwin for i386
Compiling Help.lpr
Assembling (pipe) Help.s
Linking Help
ld: warning: object file (Help.o) was built for newer OSX version (10.11) than being linked (10.4)
8 lines compiled, 1.6 sec

[Jonas Maebe]

Try updating to Lazarus 1.4.4, it should be fixed there.