[x264-devel] x264 on x64

[Steven Walters]

the patch i have is for r1745, it can be found at
http://kemuri9.net/dev/x264/patches/experimental/x264_intel_support.diff
for the time being.
It will probably not apply cleanly against the latest repository.

The patch is designed to use the same build system that currently
exists, so there's no .sln or .vcproj,
instead it requires MSys to have been initiated from the x64
environment batch script that Intel's compiler installs along with
itself.

As i mentioned previously, I have found an issue where recent versions
of pthread-win32 crashes when compiled with 64bit ICL.
When i built x264 r1745 with ICL, i ended up using an old version of
pthread-win32 which didn't exhibit crashes in use
- i can not remember how old of a version pthread-win32 it was now though.

If you don't need threading then this is not a problem.

I have not looked at Direct264 but it may be using the inline asm that
x264 has a nontrivial amount of.
MSVC also does not support inline assembly in 64bit mode (while ICL does).

On Tue, Nov 23, 2010 at 2:58 PM, Santosh <santoshkumarcs1986 at gmail.com> wrote:
> Hi Steven,
> Thank you for your mail.
> Is there is older patch that is relatively stable ?
> Regards,
> Santosh
>
> On Mon, Nov 22, 2010 at 6:50 PM, Steven Walters <kemuri9 at gmail.com> wrote:
>>
>> No, x264 in it's current state does not support visual studio's
>> compiler as it does not support the C99 convention that x264 utilizes.
>> Direct264 is the next closest thing for the time being, as it removes
>> the C99 requirements of x264 so it can be compiled with MSVC.
>>
>> I do however have a patch that adds support for Intel's compiler
>> (which does support C99), which then allows building of fully MSVC
>> compatible libraries.
>>
>> This is has been in the works for a while but I lately halted it due
>> to an issue with pthread-win32 crashing in the 64bit version of x264.
>> This is on the back burner until i get another patch to alleviate the
>> pthread-win32 issue finalized and committed.
>>
>> On Mon, Nov 22, 2010 at 9:08 PM, Scott Taylor <scott.taylor at abaslabs.com>
>> wrote:
>> > We found the same problem. I tried different build environments /
>> > compilers
>> > and using MS' LIB tool, no success. Always got unresolved symbols.
>> >
>> > Fortunately we found an existing MSVC sln in Direct264:
>> > http://sourceforge.net/projects/direct264/
>> >
>> > We also found that we needed to extern "C" the include:
>> > extern "C"
>> > {
>> >   #include "x264.h"
>> > }
>> >
>> > Scott
>> >
>> >
>> >
>> > On 23/11/2010 11:35 AM, Santosh wrote:
>> >
>> > Thank you for the reply Steven.
>> > Is MSVC supported in x264 - i.e. are there .sln files which I can use ?
>> > or I
>> > need to create a MSVC solution from scratch ?
>> > Regards,
>> > Santosh
>> >
>> > On Mon, Nov 22, 2010 at 4:15 PM, Steven Walters <kemuri9 at gmail.com>
>> > wrote:
>> >>
>> >> 64bit MinGW and 64bit MSVC were still incompatible with each other
>> >> last time i checked.
>> >>
>> >> if this is still the case, you'll need to compile x264 with visual
>> >> studio if you want to use the static library in another visual studio
>> >> project
>> >> (which i'm inferring with your use of a .lib filename vs .a)
>> >>
>> >> On Mon, Nov 22, 2010 at 6:56 PM, Santosh <santoshkumarcs1986 at gmail.com>
>> >> wrote:
>> >> > Dear experts,
>> >> > I am having trouble linking libx264.lib to my application on x64
>> >> > machine.
>> >> > I am able to build it. But, when I try linking it, I get the
>> >> > following
>> >> > errors:
>> >> > .
>> >> > .
>> >> > libx264.lib(encoder.o) : error LNK2019: unresolved external symbol
>> >> > log2f
>> >> > referenced in function x264_validate_parameters
>> >> > libx264.lib(set.o) : error LNK2001: unresolved external symbol log2f
>> >> > libx264.lib(analyse.o) : error LNK2001: unresolved external symbol
>> >> > log2f
>> >> > libx264.lib(ratecontrol.o) : error LNK2001: unresolved external
>> >> > symbol
>> >> > log2f
>> >> > libx264.lib(encoder.o) : error LNK2019: unresolved external symbol
>> >> > fseeko64
>> >> > referenced in function x264_encoder_frame_end
>> >> > libx264.lib(common.o) : error LNK2001: unresolved external symbol
>> >> > fseeko64
>> >> > .
>> >> > .
>> >> > .
>> >> >
>> >> > I am building on a 64-bit Windows 7 machine and use the following
>> >> > configuration:
>> >> > ./configure --host=x86_64-w64-mingw32
>> >> > Is x264 supported on 64-bit machines ?
>> >> > Also, is there is any website where I can get static library
>> >> > (libx264.lib) ?
>> >> > Regards,
>> >> > Santosh
>> >> >
>> >> > _______________________________________________
>> >> > x264-devel mailing list
>> >> > x264-devel at videolan.org
>> >> > http://mailman.videolan.org/listinfo/x264-devel
>> >> >
>> >> >
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>> >
>> >
>> >
>> > --
>> > Jai Hind
>> >
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>> >
>> >
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>> >
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>
>
>
> --
> Jai Hind
>
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