Remove --disable-libpr0n option & USE_IMG2 makefile variable.

Bug #88685

Makefile.in

@@ -99,13 +99,8 @@ DIRS		+= \
 		expat \
 		htmlparser \
 		gfx \
-		$(NULL)
-
-ifdef USE_IMG2
-DIRS		+= gfx2 modules/libpr0n
-endif
-
-DIRS		+= \
+		gfx2 \
+		modules/libpr0n \
 		modules/plugin \
 		dom \
 		view \

config/autoconf.mk.in

@@ -337,7 +337,6 @@ MOZ_OS2_TOOLS = @MOZ_OS2_TOOLS@
 MOZ_OS2_EMX_OBJECTFORMAT = @MOZ_OS2_EMX_OBJECTFORMAT@
 
 HAVE_MOVEMAIL=@HAVE_MOVEMAIL@
-USE_IMG2=@USE_IMG2@
 HAVE_XIE=@HAVE_XIE@
 
 MOZ_PSM=@MOZ_PSM@

config/config.mak

@@ -311,10 +311,7 @@ CFLAGS=$(CFLAGS) -DMOZ_SVG
 CFLAGS=$(CFLAGS) -DMOZ_REFLOW_PERF -DMOZ_REFLOW_PERF_DSP
 !endif
 
-#!ifdef USE_IMG2
-USE_IMG2=1
 CFLAGS=$(CFLAGS) -DUSE_IMG2
-#!endif
 
 !ifdef MOZ_STATIC_COMPONENT_LIBS
 CFLAGS=$(CFLAGS) -DXPCOM_TRANSLATE_NSGM_ENTRY_POINT -DMOZ_STATIC_COMPONENT_LIBS

configure.in

@@ -3851,15 +3851,7 @@ AC_ARG_ENABLE(verbose-config-defs,
     fi])
 
 dnl libpr0n on by default
-USE_IMG2=1
-dnl Turn off the new image library.  Soon to go away.
-MOZ_ARG_DISABLE_BOOL(libpr0n,
-[  --disable-libpr0n       Disable new imagelib],
-   USE_IMG2=)
-if test "$USE_IMG2" = "1"; then
-  AC_DEFINE(USE_IMG2)
-fi
-AC_SUBST(USE_IMG2)
+AC_DEFINE(USE_IMG2)
 
 dnl ========================================================
 dnl =

makefile.win

@@ -74,10 +74,8 @@ DIRS =                         \
 # the following are associated with the layout engine
   expat                        \
   gfx                          \
-!if defined(USE_IMG2)
   gfx2                         \
   modules\libpr0n              \
-!endif
   modules\plugin               \
   uriloader                    \
   htmlparser                   \