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Posted to modules-dev@httpd.apache.org by Andy Li <an...@onthewings.net> on 2016/01/11 20:38:51 UTC
Debugging a module that works in homebrew's httpd24 but not OSX's
preinstalled one
Hi,
I'm developing (updating) mod_neko <http://nekovm.org/doc/mod_neko>, a
module that let users to use the Neko VM <http://nekovm.org/> to serve web
requests.
The module already works on Windows and Linux, but I have a problem on Mac.
In fact, the module works on the apache httpd 2.4 installed with
homebrew-apache <https://github.com/Homebrew/homebrew-apache>, but not the
OSX preinstalled httpd (which is also 2.4).
When activating mod_neko on the OSX preinstalled httpd, I can see the log
message from the ap_hook_post_config function, but it will seg fault and
never print the log in ap_hook_child_init. The ap_hook_post_config function
seem to successfully return, since my log statement is merely above its
return statement.
The outputs of apachectl -V/-l/-M of the homebrew httpd and the OSX httpd
can be found at https://gist.github.com/andyli/2e8da482dea18306ff6f
Do you have any idea why this happens? Can this be caused by the OSX httpd
being compiled with an old apr library? Is there a way to know the exact
point of when the process seg fault (a stack trace or something)?
Best regards,
Andy
Re: Debugging a module that works in homebrew's httpd24 but not OSX's
preinstalled one
Posted by Andy Li <an...@onthewings.net>.
I compiled mod_neko using the APR comes with XCode commandline tools. It is
APR 1.4.8, which matches the OSX httpd..
Best regards,
Andy
On Tue, Jan 12, 2016 at 4:02 AM, Jim Jagielski <ji...@jagunet.com> wrote:
> If the module is not using the exact same APR lib (ie, 1.4.x
> instead of 1.5.x) then you could easily get this to happen.
>
> > On Jan 11, 2016, at 2:38 PM, Andy Li <an...@onthewings.net> wrote:
> >
> > Hi,
> >
> > I'm developing (updating) mod_neko <http://nekovm.org/doc/mod_neko>, a
> > module that let users to use the Neko VM <http://nekovm.org/> to serve
> web
> > requests.
> > The module already works on Windows and Linux, but I have a problem on
> Mac.
> > In fact, the module works on the apache httpd 2.4 installed with
> > homebrew-apache <https://github.com/Homebrew/homebrew-apache>, but not
> the
> > OSX preinstalled httpd (which is also 2.4).
> > When activating mod_neko on the OSX preinstalled httpd, I can see the log
> > message from the ap_hook_post_config function, but it will seg fault and
> > never print the log in ap_hook_child_init. The ap_hook_post_config
> function
> > seem to successfully return, since my log statement is merely above its
> > return statement.
> > The outputs of apachectl -V/-l/-M of the homebrew httpd and the OSX httpd
> > can be found at https://gist.github.com/andyli/2e8da482dea18306ff6f
> > Do you have any idea why this happens? Can this be caused by the OSX
> httpd
> > being compiled with an old apr library? Is there a way to know the exact
> > point of when the process seg fault (a stack trace or something)?
> >
> > Best regards,
> > Andy
>
>
Re: Debugging a module that works in homebrew's httpd24 but not OSX's preinstalled one
Posted by Jim Jagielski <ji...@jaguNET.com>.
If the module is not using the exact same APR lib (ie, 1.4.x
instead of 1.5.x) then you could easily get this to happen.
> On Jan 11, 2016, at 2:38 PM, Andy Li <an...@onthewings.net> wrote:
>
> Hi,
>
> I'm developing (updating) mod_neko <http://nekovm.org/doc/mod_neko>, a
> module that let users to use the Neko VM <http://nekovm.org/> to serve web
> requests.
> The module already works on Windows and Linux, but I have a problem on Mac.
> In fact, the module works on the apache httpd 2.4 installed with
> homebrew-apache <https://github.com/Homebrew/homebrew-apache>, but not the
> OSX preinstalled httpd (which is also 2.4).
> When activating mod_neko on the OSX preinstalled httpd, I can see the log
> message from the ap_hook_post_config function, but it will seg fault and
> never print the log in ap_hook_child_init. The ap_hook_post_config function
> seem to successfully return, since my log statement is merely above its
> return statement.
> The outputs of apachectl -V/-l/-M of the homebrew httpd and the OSX httpd
> can be found at https://gist.github.com/andyli/2e8da482dea18306ff6f
> Do you have any idea why this happens? Can this be caused by the OSX httpd
> being compiled with an old apr library? Is there a way to know the exact
> point of when the process seg fault (a stack trace or something)?
>
> Best regards,
> Andy