mirror of
https://github.com/FFmpeg/FFmpeg.git
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Remove Plan 9 support
Supporting the system was a nice joke for the 9 release, but it has run its course. Nowadays Plan 9 receives no testing and has no practical usefulness.
This commit is contained in:
Diego Biurrun
parent
4a1ef54398
commit
3794062ab1
4
Makefile
4
Makefile
@ -116,7 +116,7 @@ FF_STATIC_DEP_LIBS := $(STATIC_DEP_LIBS)
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all: $(AVPROGS)
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$(TOOLS): %$(EXESUF): %.o $(EXEOBJS)
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$(TOOLS): %$(EXESUF): %.o
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$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS)
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tools/cws2fws$(EXESUF): ELIBS = $(ZLIB)
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@ -157,7 +157,7 @@ $(foreach D,$(FFLIBS),$(eval $(call DOSUBDIR,lib$(D))))
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include $(SRC_PATH)/doc/Makefile
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define DOPROG
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OBJS-$(1) += $(1).o $(EXEOBJS) $(OBJS-$(1)-yes)
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OBJS-$(1) += $(1).o $(OBJS-$(1)-yes)
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$(1)$(EXESUF): $$(OBJS-$(1))
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$$(OBJS-$(1)): CFLAGS += $(CFLAGS-$(1))
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$(1)$(EXESUF): LDFLAGS += $(LDFLAGS-$(1))
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@ -1,10 +0,0 @@
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#!/bin/sh
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n=10
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case "$1" in
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-n) n=$2; shift 2 ;;
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-n*) n=${1#-n}; shift ;;
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esac
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exec sed ${n}q "$@"
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@ -1,34 +0,0 @@
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/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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int plan9_main(int argc, char **argv);
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#undef main
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int main(int argc, char **argv)
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{
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/* The setfcr() function in lib9 is broken, must use asm. */
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#ifdef __i386
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short fcr;
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__asm__ volatile ("fstcw %0 \n"
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"or $63, %0 \n"
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"fldcw %0 \n"
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: "=m"(fcr));
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#endif
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return plan9_main(argc, argv);
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}
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@ -1,2 +0,0 @@
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#!/bin/sh
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exec awk "BEGIN { for (i = 2; i < ARGC; i++) printf \"$1\", ARGV[i] }" "$@"
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18
configure
vendored
18
configure
vendored
@ -1173,7 +1173,7 @@ apply(){
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cp_if_changed(){
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cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
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mkdir -p "$(dirname $2)"
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$cp_f "$1" "$2"
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cp -f "$1" "$2"
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}
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# CONFIG_LIST contains configurable options, while HAVE_LIST is for
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@ -2491,7 +2491,6 @@ shlibdir_default="$libdir_default"
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ar_default="ar"
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cc_default="gcc"
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host_cc_default="gcc"
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cp_f="cp -f"
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ln_s="ln -s -f"
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nm_default="nm -g"
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objformat="elf"
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@ -3985,17 +3984,6 @@ case $target_os in
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;;
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minix)
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;;
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plan9)
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add_cppflags -D_C99_SNPRINTF_EXTENSION \
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-D_REENTRANT_SOURCE \
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-D_RESEARCH_SOURCE \
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-DFD_SETSIZE=96 \
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-DHAVE_SOCK_OPTS
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add_compat strtod.o strtod=avpriv_strtod
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network_extralibs='-lbsd'
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exeobjs=compat/plan9/main.o
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cp_f='cp'
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;;
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none)
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;;
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*)
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@ -5056,9 +5044,6 @@ case $target_os in
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osf1)
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enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
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;;
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plan9)
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add_cppflags -Dmain=plan9_main
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;;
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esac
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enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
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@ -5318,7 +5303,6 @@ ZLIB=$($ldflags_filter -lz)
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LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
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EXTRALIBS=$extralibs
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COMPAT_OBJS=$compat_objs
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EXEOBJS=$exeobjs
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INSTALL=install
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LIBTARGET=${LIBTARGET}
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SLIBNAME=${SLIBNAME}
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@ -336,67 +336,4 @@ and for a build with shared libraries
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./configure --target-os=mingw32 --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
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@end example
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@chapter Plan 9
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The native @uref{http://plan9.bell-labs.com/plan9/, Plan 9} compiler
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does not implement all the C99 features needed by Libav so the gcc
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port must be used. Furthermore, a few items missing from the C
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library and shell environment need to be fixed.
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@itemize
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@item GNU awk, grep, make, and sed
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Working packages of these tools can be found at
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@uref{http://code.google.com/p/ports2plan9/downloads/list, ports2plan9}.
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They can be installed with @uref{http://9front.org/, 9front's} @code{pkg}
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utility by setting @code{pkgpath} to
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@code{http://ports2plan9.googlecode.com/files/}.
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@item Missing/broken @code{head} and @code{printf} commands
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Replacements adequate for building Libav can be found in the
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@code{compat/plan9} directory. Place these somewhere they will be
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found by the shell. These are not full implementations of the
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commands and are @emph{not} suitable for general use.
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@item Missing C99 @code{stdint.h} and @code{inttypes.h}
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Replacement headers are available from
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@url{http://code.google.com/p/plan9front/issues/detail?id=152}.
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@item Missing or non-standard library functions
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Some functions in the C library are missing or incomplete. The
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@code{@uref{http://ports2plan9.googlecode.com/files/gcc-apelibs-1207.tbz,
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gcc-apelibs-1207}} package from
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@uref{http://code.google.com/p/ports2plan9/downloads/list, ports2plan9}
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includes an updated C library, but installing the full package gives
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unusable executables. Instead, keep the files from @code{gccbin.tgz}
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under @code{/386/lib/gnu}. From the @code{libc.a} archive in the
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@code{gcc-apelibs-1207} package, extract the following object files and
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turn them into a library:
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@itemize
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@item @code{strerror.o}
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@item @code{strtoll.o}
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@item @code{snprintf.o}
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@item @code{vsnprintf.o}
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@item @code{vfprintf.o}
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@item @code{_IO_getc.o}
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@item @code{_IO_putc.o}
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@end itemize
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Use the @code{--extra-libs} option of @code{configure} to inform the
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build system of this library.
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@item FPU exceptions enabled by default
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Unlike most other systems, Plan 9 enables FPU exceptions by default.
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These must be disabled before calling any Libav functions. While the
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included tools will do this automatically, other users of the
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libraries must do it themselves.
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@end itemize
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@bye
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@ -59,7 +59,7 @@ static inline int is_dos_path(const char *path)
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return 0;
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}
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#if defined(__OS2__) || defined(__Plan9__)
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#if defined(__OS2__)
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#define SHUT_RD 0
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#define SHUT_WR 1
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#define SHUT_RDWR 2
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@ -27,7 +27,7 @@ define RULES
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$(TOOLS): THISLIB = $(FULLNAME:%=$(LD_LIB))
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$(TESTPROGS): THISLIB = $(SUBDIR)$(LIBNAME)
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$(TESTPROGS) $(TOOLS): %$(EXESUF): %.o $(EXEOBJS)
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$(TESTPROGS) $(TOOLS): %$(EXESUF): %.o
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$$(LD) $(LDFLAGS) $(LDEXEFLAGS) $$(LD_O) $$(filter %.o,$$^) $$(THISLIB) $(FFEXTRALIBS) $$(ELIBS)
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$(SUBDIR)lib$(NAME).ver: $(SUBDIR)lib$(NAME).v $(OBJS)
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@ -34,7 +34,7 @@ OBJDIRS += $(CHECKASMDIRS)
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CHECKASM := tests/checkasm/checkasm$(EXESUF)
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$(CHECKASM): $(EXEOBJS) $(CHECKASMOBJS) $(FF_STATIC_DEP_LIBS)
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$(CHECKASM): $(CHECKASMOBJS) $(FF_STATIC_DEP_LIBS)
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$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $(CHECKASMOBJS) $(FF_STATIC_DEP_LIBS) $(EXTRALIBS)
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checkasm: $(CHECKASM)
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