From e5f94c2b2cbebe07cde5ca54abf89a2974f97e5c Mon Sep 17 00:00:00 2001
From: Ramiro Polla <ramiro@lisha.ufsc.br>
Date: Sun, 7 Jan 2007 00:22:32 +0000
Subject: [PATCH] Disable threading support by default on all platforms, add
 individual enabling options and hook this up in configure output. patch by
 Ramiro Polla, ramiro lisha.ufsc br

Originally committed as revision 7420 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 configure | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 09a2fc836d..a7d79fbecb 100755
--- a/configure
+++ b/configure
@@ -71,6 +71,8 @@ show_help(){
   echo "  --enable-pp              enable GPLed postprocessing support [default=no]"
   echo "  --enable-swscaler        software scaler support [default=no]"
   echo "  --enable-sunmlib         use Sun medialib [default=no]"
+  echo "  --enable-beosthreads     use BeOS threads [default=no]"
+  echo "  --enable-os2threads      use OS/2 threads [default=no]"
   echo "  --enable-pthreads        use pthreads [default=no]"
   echo "  --enable-w32threads      use Win32 threads [default=no]"
   echo "  --enable-x11grab         enable X11 grabbing [default=no]"
@@ -648,8 +650,11 @@ amr_wb="no"
 amr_nb_fixed="no"
 amr_if2="no"
 mlib="no"
+beosthreads="no"
+os2threads="no"
 pthreads="no"
 w32threads="no"
+thread_type="no"
 swscaler="no"
 gpl="no"
 memalign_hack="no"
@@ -681,7 +686,6 @@ video4linux2="no"
 dv1394="no"
 # enable BeOS things
 audio_beos="yes"
-beosthreads="yes"
 # no need for libm, but the inet stuff
 # Check for BONE
 if (echo $BEINCLUDES|grep 'headers/be/bone' >/dev/null); then
@@ -829,7 +833,6 @@ dv1394="no"
 ffserver="no"
 vhook="no"
 os2="yes"
-os2threads="yes"
 ;;
 *)
 targetos="${targetos}-UNKNOWN"
@@ -1017,6 +1020,10 @@ for opt do
   ;;
   --enable-w32threads) w32threads="yes"
   ;;
+  --enable-beosthreads) beosthreads="yes"
+  ;;
+  --enable-os2threads) os2threads="yes"
+  ;;
   --enable-swscaler) swscaler="yes"
   ;;
   --enable-gpl) gpl="yes"
@@ -1462,6 +1469,16 @@ if enabled pthreads; then
     fi
 fi
 
+for thread in pthreads beosthreads os2threads w32threads; do
+    if enabled $thread; then
+        if test $thread_type != "no"; then
+            die "ERROR: Only one thread type must be selected."
+        else
+            thread_type="$thread"
+        fi
+    fi
+done
+
 # these are off by default, so fail if requested and not available
 enabled libdts  && require libdts dts.h dts_init -ldts -lm
 enabled libgsm  && require libgsm gsm.h gsm_create -lgsm
@@ -1785,7 +1802,7 @@ echo "network support           $network"
 if test "$network" = "yes" ; then
     echo "IPv6 support              $ipv6"
 fi
-echo "pthreads support          $pthreads"
+echo "threading support         $thread_type"
 echo "SDL support               $sdl"
 if test $sdl_too_old = "yes"; then
     echo "-> Your SDL version is too old - please upgrade to have FFplay/SDL support."