diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2012-10-24 15:31:46 +0400 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2012-10-24 15:42:58 +0400 |
commit | f3b8096bc0e7df9e45db1023d6e6e7bff177d0c4 (patch) | |
tree | 9b3c775ca329b0453593297d2bd7915ac88bb61e /doc/platform.texi | |
parent | 42ee9f3981979880209a60d1ac30057fcfab6e53 (diff) | |
parent | 0c03cc68386443f1e96ab6fb358220faf67cd5ff (diff) |
Merge commit '0c03cc68386443f1e96ab6fb358220faf67cd5ff'
* commit '0c03cc68386443f1e96ab6fb358220faf67cd5ff':
mp3: exit on parsing error in mp_decode_frame
rtmppkt: Avoid unescaped backslash in Doxygen comment
fate-lavfi: replace sed/grep/cut combos with awk
build: Plan 9 support
Conflicts:
configure
tests/lavfi-regression.sh
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'doc/platform.texi')
-rw-r--r-- | doc/platform.texi | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/doc/platform.texi b/doc/platform.texi index 68e23bf7c1..9da8bc88b1 100644 --- a/doc/platform.texi +++ b/doc/platform.texi @@ -304,4 +304,67 @@ and for a build with shared libraries ./configure --target-os=mingw32 --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin @end example +@chapter Plan 9 + +The native @uref{http://plan9.bell-labs.com/plan9/, Plan 9} compiler +does not implement all the C99 features needed by FFmpeg so the gcc +port must be used. Furthermore, a few items missing from the C +library and shell environment need to be fixed. + +@itemize + +@item GNU awk, grep, make, and sed + +Working packages of these tools can be found at +@uref{http://code.google.com/p/ports2plan9/downloads/list, ports2plan9}. +They can be installed with @uref{http://9front.org/, 9front's} @code{pkg} +utility by setting @code{pkgpath} to +@code{http://ports2plan9.googlecode.com/files/}. + +@item Missing/broken @code{head} and @code{printf} commands + +Replacements adequate for building FFmpeg can be found in the +@code{compat/plan9} directory. Place these somewhere they will be +found by the shell. These are not full implementations of the +commands and are @emph{not} suitable for general use. + +@item Missing C99 @code{stdint.h} and @code{inttypes.h} + +Replacement headers are available from +@url{http://code.google.com/p/plan9front/issues/detail?id=152}. + +@item Missing or non-standard library functions + +Some functions in the C library are missing or incomplete. The +@code{@uref{http://ports2plan9.googlecode.com/files/gcc-apelibs-1207.tbz, +gcc-apelibs-1207}} package from +@uref{http://code.google.com/p/ports2plan9/downloads/list, ports2plan9} +includes an updated C library, but installing the full package gives +unusable executables. Instead, keep the files from @code{gccbin.tgz} +under @code{/386/lib/gnu}. From the @code{libc.a} archive in the +@code{gcc-apelibs-1207} package, extract the following object files and +turn them into a library: + +@itemize +@item @code{strerror.o} +@item @code{strtoll.o} +@item @code{snprintf.o} +@item @code{vsnprintf.o} +@item @code{vfprintf.o} +@item @code{_IO_getc.o} +@item @code{_IO_putc.o} +@end itemize + +Use the @code{--extra-libs} option of @code{configure} to inform the +build system of this library. + +@item FPU exceptions enabled by default + +Unlike most other systems, Plan 9 enables FPU exceptions by default. +These must be disabled before calling any FFmpeg functions. While the +included tools will do this automatically, other users of the +libraries must do it themselves. + +@end itemize + @bye |