Some parts of FFmpeg cannot be built with version 2.15 of the GNU assembler which is still provided by a few AMD64 distributions. To make sure your compiler really uses the required version of gas after a binutils upgrade, run:
$(gcc -print-prog-name=as) --version
If not, then you should install a different compiler that has no
hard-coded path to gas. In the worst case pass --disable-asm
to configure.
If you compiled FFmpeg libraries statically and you want to use them to
build your own shared library, you may need to force PIC support (with
--enable-pic during FFmpeg configure) and add the following option
to your project LDFLAGS:
-Wl,-Bsymbolic
If your target platform requires position independent binaries, you should
pass the correct linking flag (e.g. -pie) to --extra-ldexeflags.
BSD make will not build FFmpeg, you need to install and use GNU Make
(gmake).
GNU Make is required to build FFmpeg, so you have to invoke (gmake),
standard Solaris Make will not work. When building with a non-c99 front-end
(gcc, generic suncc) add either --extra-libs=/usr/lib/values-xpg6.o
or --extra-libs=/usr/lib/64/values-xpg6.o to the configure options
since the libc is not c99-compliant by default. The probes performed by
configure may raise an exception leading to the death of configure itself
due to a bug in the system shell. Simply invoke a different shell such as
bash directly to work around this:
bash ./configure
The toolchain provided with Xcode is sufficient to build the basic unaccelerated code.
Mac OS X on PowerPC or ARM (iPhone) requires a preprocessor from https://github.com/FFmpeg/gas-preprocessor or https://github.com/yuvi/gas-preprocessor(currently outdated) to build the optimized assembly functions. Put the Perl script somewhere in your PATH, FFmpeg’s configure will pick it up automatically.
Mac OS X on amd64 and x86 requires nasm to build most of the
optimized assembly functions. Fink,
Gentoo Prefix,
Homebrew
or MacPorts can easily provide it.
Using a cross-compiler is preferred for various reasons. http://www.delorie.com/howto/djgpp/linux-x-djgpp.html
For information about compiling FFmpeg on OS/2 see http://www.edm2.com/index.php/FFmpeg.
To get help and instructions for building FFmpeg under Windows, check out the FFmpeg Windows Help Forum at http://ffmpeg.zeranoe.com/forum/.
FFmpeg can be built to run natively on Windows using the MinGW-w64 toolchain. Install the latest versions of MSYS2 and MinGW-w64 from http://msys2.github.io/ and/or http://mingw-w64.sourceforge.net/. You can find detailed installation instructions in the download section and the FAQ.
Notes:
make -r instead of plain make. This
speed up is close to non-existent for normal one-off builds and is only
noticeable when running make for a second time (for example during
make install).
pkg-config installed.
./configure --enable-shared when configuring FFmpeg,
you can build the FFmpeg libraries (e.g. libavutil, libavcodec,
libavformat) as DLLs.
The MSYS2 MinGW-w64 environment provides ready to use toolchains and dependencies
through pacman.
Make sure to use ‘mingw64_shell.bat’ or ‘mingw32_shell.bat’ to have
the correct MinGW-w64 environment. The default install provides shortcuts to
them under MinGW-w64 Win64 Shell and MinGW-w64 Win32 Shell.
# normal msys2 packages pacman -S make pkgconf diffutils # mingw-w64 packages and toolchains pacman -S mingw-w64-x86_64-nasm mingw-w64-x86_64-gcc mingw-w64-x86_64-SDL2
To target 32 bits replace x86_64 with i686 in the command above.
FFmpeg can be built with MSVC 2013 or later.
You will need the following prerequisites:
To set up a proper environment in MSYS2, you need to run msys_shell.bat from
the Visual Studio or Intel Compiler command prompt.
Place yasm.exe somewhere in your PATH.
Next, make sure any other headers and libs you want to use, such as zlib, are
located in a spot that the compiler can see. Do so by modifying the LIB
and INCLUDE environment variables to include the Windows-style
paths to these directories. Alternatively, you can try to use the
--extra-cflags/--extra-ldflags configure options.
Finally, run:
For MSVC: ./configure --toolchain=msvc For ICL: ./configure --toolchain=icl make make install
If you wish to compile shared libraries, add --enable-shared to your
configure options. Note that due to the way MSVC and ICL handle DLL imports and
exports, you cannot compile static and shared libraries at the same time, and
enabling shared libraries will automatically disable the static ones.
Notes:
zlib.lib with MSVC. Regardless of which method you use, you must still
follow step 3, or compilation will fail.
win32/Makefile.msc so that it uses -MT instead of -MD, since
this is how FFmpeg is built as well.
zconf.h and remove its inclusion of unistd.h. This gets
erroneously included when building FFmpeg.
nmake -f win32/Makefile.msc.
zlib.lib, zconf.h, and zlib.h to somewhere MSVC
can see.
Anything else is not officially supported.
If you plan to link with MSVC-built static libraries, you will need
to make sure you have Runtime Library set to
Multi-threaded (/MT) in your project’s settings.
You will need to define inline to something MSVC understands:
#define inline __inline
Also note, that as stated in Microsoft Visual C++, you will need an MSVC-compatible inttypes.h.
If you plan on using import libraries created by dlltool, you must
set References to No (/OPT:NOREF) under the linker optimization
settings, otherwise the resulting binaries will fail during runtime.
This is not required when using import libraries generated by lib.exe.
This issue is reported upstream at
http://sourceware.org/bugzilla/show_bug.cgi?id=12633.
To create import libraries that work with the /OPT:REF option
(which is enabled by default in Release mode), follow these steps:
Alternatively, in a normal command line prompt, call ‘vcvars32.bat’ which sets up the environment variables for the Visual C++ tools (the standard location for this file is something like ‘C:\Program Files (x86_\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat’).
lib.exe:
lib /machine:i386 /def:..\lib\foo-version.def /out:foo.lib
Replace foo-version and foo with the respective library names.
You must use the MinGW cross compilation tools available at http://www.mingw.org/.
Then configure FFmpeg with the following options:
./configure --target-os=mingw32 --cross-prefix=i386-mingw32msvc-
(you can change the cross-prefix according to the prefix chosen for the MinGW tools).
Then you can easily test FFmpeg with Wine.
Please use Cygwin 1.7.x as the obsolete 1.5.x Cygwin versions lack llrint() in its C library.
Install your Cygwin with all the "Base" packages, plus the following "Devel" ones:
binutils, gcc4-core, make, git, mingw-runtime, texinfo
In order to run FATE you will also need the following "Utils" packages:
diffutils
If you want to build FFmpeg with additional libraries, download Cygwin "Devel" packages for Ogg and Vorbis from any Cygwin packages repository:
libogg-devel, libvorbis-devel
These library packages are only available from Cygwin Ports:
yasm, libSDL-devel, libgsm-devel, libmp3lame-devel, speex-devel, libtheora-devel, libxvidcore-devel
The recommendation for x264 is to build it from source, as it evolves too quickly for Cygwin Ports to be up to date.
With Cygwin you can create Windows binaries that do not need the cygwin1.dll.
Just install your Cygwin as explained before, plus these additional "Devel" packages:
gcc-mingw-core, mingw-runtime, mingw-zlib
and add some special flags to your configure invocation.
For a static build run
./configure --target-os=mingw32 --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
and for a build with shared libraries
./configure --target-os=mingw32 --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin