penso di aver fatto questo, correggimi
linux-suse:~ # cd '/usr/lib/mplayerplug-in'
linux-suse:/usr/lib/mplayerplug-in # ./configure --with-gecko-sdk --enable-gtk1
checking for g++... g++
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for a BSD-compatible install... /usr/bin/install -c
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
Using new (v1.7+) gecko-sdk
checking for GTK... yes
checking for GTHREAD... yes
checking how to run the C preprocessor... gcc -E
checking for X... libraries /usr/X11R6/lib, headers /usr/X11R6/include
checking for gethostbyname... yes
checking for connect... yes
checking for remove... yes
checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking X11/Xlib.h usability... yes
checking X11/Xlib.h presence... yes
checking for X11/Xlib.h... yes
checking X11/Intrinsic.h usability... yes
checking X11/Intrinsic.h presence... yes
checking for X11/Intrinsic.h... yes
checking X11/StringDefs.h usability... yes
checking X11/StringDefs.h presence... yes
checking for X11/StringDefs.h... yes
checking for sys/stat.h... (cached) yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking for an ANSI C-conforming const... yes
checking whether time.h and sys/time.h may both be included... yes
checking for pid_t... yes
checking for size_t... yes
checking for stdlib.h... (cached) yes
checking for GNU libc compatible malloc... yes
checking for unistd.h... (cached) yes
checking vfork.h usability... no
checking vfork.h presence... no
checking for vfork.h... no
checking for fork... yes
checking for vfork... yes
checking for working fork... yes
checking for working vfork... (cached) yes
checking for memset... yes
checking for strcasecmp... yes
checking for strchr... yes
checking for strdup... yes
checking for strncasecmp... yes
checking for strstr... yes
checking for strrchr... yes
checking for snprintf... yes
checking for mkfifo... yes
checking for dup2... yes
checking for gettimeofday... yes
checking for strerror... yes
checking for strtol... yes
checking for mkdir... yes
checking for setlocale... yes
checking for memmem... yes
checking libintl.h usability... yes
checking libintl.h presence... yes
checking for libintl.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking sys/param.h usability... yes
checking sys/param.h presence... yes
checking for sys/param.h... yes
checking locale.h usability... yes
checking locale.h presence... yes
checking for locale.h... yes
checking for stdbool.h that conforms to C99... yes
checking for _Bool... yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking return type of signal handlers... void
checking X11/xpm.h usability... yes
checking X11/xpm.h presence... yes
checking for X11/xpm.h... yes
checking for DPMSQueryExtension in -lXdpms... no
checking for X11/extensions/dpms.h... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating po/Makefile
config.status: creating install.sh
config.status: creating uninstall.sh
config.status: creating config.h
linux-suse:/usr/lib/mplayerplug-in # make
g++ -c -o plugin.o -Wall -g -O2 -I/usr/X11R6/include -g -O2 -DXP_UNIX -DMOZ_X11 -Iyes -Iyes/include -Iinclude -fPIC -DXPCOM_GLUE -DMOZILLA_STRICT_API -D_REENTRANT -I/opt/gnome/include/glib-1.2 -I/opt/gnome/lib/glib/include -DGTK_ENABLED Source/plugin.cpp
In file included from include/pluginbase.h:41,
from Source/plugin.h:53,
from Source/plugin.cpp:37:
include/npplat.h:41:19: error: npapi.h: No such file or directory
include/npplat.h:42:19: error: npupp.h: No such file or directory
In file included from Source/nsScriptablePeer.h:48,
from Source/plugin.h:54,
from Source/plugin.cpp:37:
Source/nsIScriptableMplayerPlugin.h:10:25: error: nsISupports.h: No such file or directory
In file included from Source/plugin.h:54,
from Source/plugin.cpp:37:
Source/nsScriptablePeer.h:49:26: error: nsIClassInfo.h: No such file or directory
In file included from Source/plugin.h:55,
from Source/plugin.cpp:37:
Source/plugin-setup.h:12:22: error: gdk/gdkx.h: No such file or directory
Source/plugin-setup.h:13:21: error: gtk/gtk.h: No such file or directory
Source/plugin-setup.h:18:21: error: gdk/gdk.h: No such file or directory
Source/plugin.cpp:38:31: error: nsIServiceManager.h: No such file or directory
dopo longhissima