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Compiling PHP 5.x on Cygwin [message #182587] Fri, 16 August 2013 18:16 Go to next message
Christoph Michael Bec is currently offline  Christoph Michael Bec
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I have tried to compile PHP 5.5.1 and 5.5.2 on Cygwin[1], but the
default ./configure fails with:

| checking for known struct flock definition... configure: error: Don't
| know how to define struct flock on this system, set
| --enable-opcache=no

If I do "./config --enable-opcache=no" I'm able to build PHP, but I'd
rather build it with the opcache enabled. Any hints on how to
accomplish this are appreciated.

[1] $ uname -a
CYGWIN_NT-5.1 RELIANT 1.7.18(0.263/5/3) 2013-04-19 10:39 i686 Cygwin

--
Christoph M. Becker
Re: Compiling PHP 5.x on Cygwin [message #182588 is a reply to message #182587] Fri, 16 August 2013 22:48 Go to previous messageGo to next message
Jerry Stuckle is currently offline  Jerry Stuckle
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On 8/16/2013 6:16 PM, Christoph Michael Becker wrote:
> I have tried to compile PHP 5.5.1 and 5.5.2 on Cygwin[1], but the
> default ./configure fails with:
>
> | checking for known struct flock definition... configure: error: Don't
> | know how to define struct flock on this system, set
> | --enable-opcache=no
>
> If I do "./config --enable-opcache=no" I'm able to build PHP, but I'd
> rather build it with the opcache enabled. Any hints on how to
> accomplish this are appreciated.
>
> [1] $ uname -a
> CYGWIN_NT-5.1 RELIANT 1.7.18(0.263/5/3) 2013-04-19 10:39 i686 Cygwin
>

I suspect it's looking for struct flock in .../include/sys/fcntl.h.
However, IIRC, in cygwin the definition is located in
..../cygwin/include/cygwin/types.h. But beware - the last I looked,
flock was still buggy in cygwin.

I don't use cygwin here any more, so I can't test. However, I suspect
you're going to have to modify your config file or, at the very least,
force an include of the cygwin version of the file. You may also have
to look into the header to see if you need a #define to get the struct
included.

But why try to get PHP working in cygwin? The Windows version of PHP
works fine (as does Apache). Or, if you need Linux, load a real Linux
distro (I use Debian but Ubuntu is also good, I hear) in a virtual box
under Windows.

--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================
Re: Compiling PHP 5.x on Cygwin [message #182637 is a reply to message #182588] Tue, 20 August 2013 14:20 Go to previous messageGo to next message
Christoph Michael Bec is currently offline  Christoph Michael Bec
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Jerry Stuckle wrote:

> On 8/16/2013 6:16 PM, Christoph Michael Becker wrote:
>> I have tried to compile PHP 5.5.1 and 5.5.2 on Cygwin[1], but the
>> default ./configure fails with:
>>
>> | checking for known struct flock definition... configure: error: Don't
>> | know how to define struct flock on this system, set
>> | --enable-opcache=no
>>
>> If I do "./config --enable-opcache=no" I'm able to build PHP, but I'd
>> rather build it with the opcache enabled. Any hints on how to
>> accomplish this are appreciated.
>>
>> [1] $ uname -a
>> CYGWIN_NT-5.1 RELIANT 1.7.18(0.263/5/3) 2013-04-19 10:39 i686 Cygwin
>>
>
> I suspect it's looking for struct flock in .../include/sys/fcntl.h.
> However, IIRC, in cygwin the definition is located in
> .../cygwin/include/cygwin/types.h. But beware - the last I looked,
> flock was still buggy in cygwin.
>
> I don't use cygwin here any more, so I can't test. However, I suspect
> you're going to have to modify your config file or, at the very least,
> force an include of the cygwin version of the file. You may also have
> to look into the header to see if you need a #define to get the struct
> included.

Thanks, Jerry, that brought me a bit further. Indeed including
<cygwin/types.h> in the config file made the general check for flock
happy; the second check for the opcache additionally needed a ||
defined(__CYGWIN32__) to an #elif. After these modifications building
was possible; however, I was not able to actually activate the opcache.

The problem seems to be that PHP is building shared libraries with a .so
extension on Cygwin, where this should be .dll.a. This also happens
with the original ./configure and --enable-opcache=no. This is no
problem for the PHP executable, which statically links in the default
extensions, but not the opcache extension.

Running "make test" produced failures for all tests, which might be
related to the shared library issue. It seems to me PHP's Cygwin
support has some flaws. I'm considering to file a bug report/feature
request to improve that, even if I understand that supporting Cygwin has
probably low priority for the PHP developers.

> But why try to get PHP working in cygwin? The Windows version of PHP
> works fine (as does Apache). Or, if you need Linux, load a real Linux
> distro (I use Debian but Ubuntu is also good, I hear) in a virtual box
> under Windows.

I'm still stuck with Windows XP (I know, I should have already
upgraded), so I can't run the native Windows build of PHP 5.5. But even
after upgrading I would prefer being able to compile PHP in a Unix like
environment. I would prefer using Cygwin over a virtual machine
installation of a Linux system, as it is more lightweight and may
suffice for my purposes.

--
Christoph M. Becker
Re: Compiling PHP 5.x on Cygwin [message #182642 is a reply to message #182637] Tue, 20 August 2013 16:48 Go to previous messageGo to next message
Jerry Stuckle is currently offline  Jerry Stuckle
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On 8/20/2013 2:20 PM, Christoph Michael Becker wrote:
> Jerry Stuckle wrote:
>
>> On 8/16/2013 6:16 PM, Christoph Michael Becker wrote:
>>> I have tried to compile PHP 5.5.1 and 5.5.2 on Cygwin[1], but the
>>> default ./configure fails with:
>>>
>>> | checking for known struct flock definition... configure: error: Don't
>>> | know how to define struct flock on this system, set
>>> | --enable-opcache=no
>>>
>>> If I do "./config --enable-opcache=no" I'm able to build PHP, but I'd
>>> rather build it with the opcache enabled. Any hints on how to
>>> accomplish this are appreciated.
>>>
>>> [1] $ uname -a
>>> CYGWIN_NT-5.1 RELIANT 1.7.18(0.263/5/3) 2013-04-19 10:39 i686 Cygwin
>>>
>>
>> I suspect it's looking for struct flock in .../include/sys/fcntl.h.
>> However, IIRC, in cygwin the definition is located in
>> .../cygwin/include/cygwin/types.h. But beware - the last I looked,
>> flock was still buggy in cygwin.
>>
>> I don't use cygwin here any more, so I can't test. However, I suspect
>> you're going to have to modify your config file or, at the very least,
>> force an include of the cygwin version of the file. You may also have
>> to look into the header to see if you need a #define to get the struct
>> included.
>
> Thanks, Jerry, that brought me a bit further. Indeed including
> <cygwin/types.h> in the config file made the general check for flock
> happy; the second check for the opcache additionally needed a ||
> defined(__CYGWIN32__) to an #elif. After these modifications building
> was possible; however, I was not able to actually activate the opcache.
>
> The problem seems to be that PHP is building shared libraries with a .so
> extension on Cygwin, where this should be .dll.a. This also happens
> with the original ./configure and --enable-opcache=no. This is no
> problem for the PHP executable, which statically links in the default
> extensions, but not the opcache extension.

Can you rename the libraries? Or maybe change the config script to
generate the proper names? (I don't know - it's been too long since I
used cygwin - and then not with PHP).

>
> Running "make test" produced failures for all tests, which might be
> related to the shared library issue. It seems to me PHP's Cygwin
> support has some flaws. I'm considering to file a bug report/feature
> request to improve that, even if I understand that supporting Cygwin has
> probably low priority for the PHP developers.
>

I doubt you'll get any help. Is there a version of PHP in the cygwin
libraries (I don't know - it's been too long since I used cygwin, but
IIRC there was one)? Maybe that will help get you on the right track.

>> But why try to get PHP working in cygwin? The Windows version of PHP
>> works fine (as does Apache). Or, if you need Linux, load a real Linux
>> distro (I use Debian but Ubuntu is also good, I hear) in a virtual box
>> under Windows.
>
> I'm still stuck with Windows XP (I know, I should have already
> upgraded), so I can't run the native Windows build of PHP 5.5. But even
> after upgrading I would prefer being able to compile PHP in a Unix like
> environment. I would prefer using Cygwin over a virtual machine
> installation of a Linux system, as it is more lightweight and may
> suffice for my purposes.
>

Yup, XP is at EOL and pretty soon there won't be any further updates. I
know it's a hassle - I still have a couple of programs which don't run
under Windows 7 (even in emulation mode) so I have to use a Windows XP
virtual box. A hassle.

And yes, cygwin is more lightweight; if the overhead of a virtual box is
a problem for you, than that's the way to go.

Of course, you can get some pretty cheap laptops nowadays. Maybe it
would be worth investing in one and just installing Linux on it :)

Or if you don't need to move around, desktops are getting even cheaper :))

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================
Re: Compiling PHP 5.x on Cygwin [message #182656 is a reply to message #182642] Fri, 23 August 2013 18:08 Go to previous message
Christoph Michael Bec is currently offline  Christoph Michael Bec
Messages: 207
Registered: June 2013
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Jerry Stuckle wrote:

> On 8/20/2013 2:20 PM, Christoph Michael Becker wrote:
>
>> Thanks, Jerry, that brought me a bit further. Indeed including
>> <cygwin/types.h> in the config file made the general check for flock
>> happy; the second check for the opcache additionally needed a ||
>> defined(__CYGWIN32__) to an #elif. After these modifications building
>> was possible; however, I was not able to actually activate the opcache.
>>
>> The problem seems to be that PHP is building shared libraries with a .so
>> extension on Cygwin, where this should be .dll.a. This also happens
>> with the original ./configure and --enable-opcache=no. This is no
>> problem for the PHP executable, which statically links in the default
>> extensions, but not the opcache extension.
>
> Can you rename the libraries? Or maybe change the config script to
> generate the proper names? (I don't know - it's been too long since I
> used cygwin - and then not with PHP).

Renaming the libraries would not help--there all just < 1 KB in size.
Changing the config script (or the Makefile) might work, but some quick
tests were not successful. I guess it's best to postpone further work
until some more basic issues are resolved (see below).

>> Running "make test" produced failures for all tests, which might be
>> related to the shared library issue. It seems to me PHP's Cygwin
>> support has some flaws. I'm considering to file a bug report/feature
>> request to improve that, even if I understand that supporting Cygwin has
>> probably low priority for the PHP developers.
>>
>
> I doubt you'll get any help. Is there a version of PHP in the cygwin
> libraries (I don't know - it's been too long since I used cygwin, but
> IIRC there was one)? Maybe that will help get you on the right track.

Unfortunately there's no PHP available via the regular Cygwin
distribution. However, the Cygwin ports project[1] offers a PHP
package--but only 5.4.19 (there really fast anyway, as this was released
only several hours ago).

Regarding the failing tests I had filed a bug report[2], and due to the
quick feedback of the PHP devs (what pleasantly surprised me) I made
some progress here. I'll see where that goes.

>> I'm still stuck with Windows XP (I know, I should have already
>> upgraded), so I can't run the native Windows build of PHP 5.5. But even
>> after upgrading I would prefer being able to compile PHP in a Unix like
>> environment. I would prefer using Cygwin over a virtual machine
>> installation of a Linux system, as it is more lightweight and may
>> suffice for my purposes.
>>
>
> Yup, XP is at EOL and pretty soon there won't be any further updates. I
> know it's a hassle - I still have a couple of programs which don't run
> under Windows 7 (even in emulation mode) so I have to use a Windows XP
> virtual box. A hassle.
>
> And yes, cygwin is more lightweight; if the overhead of a virtual box is
> a problem for you, than that's the way to go.
>
> Of course, you can get some pretty cheap laptops nowadays. Maybe it
> would be worth investing in one and just installing Linux on it :)
>
> Or if you don't need to move around, desktops are getting even cheaper :))

That's an option to consider, if I can't manage to get extensions
relying on shared libraries working on Cygwin.

Thanks for your help. :)

[1] <http://cygwinports.org/>
[2] <https://bugs.php.net/bug.php?id=65497>

--
Christoph M. Becker
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