configure: detection for xulrunner 1.9

Based on earlier work from Nicolas (kwizart)
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

configure.ac

@@ -5422,6 +5422,50 @@ then
         MOZILLA_CONFIG=
         CPPFLAGS="${CPPFLAGS_save}"
       ],
+      [
+        PKG_CHECK_MODULES([XULRUNNER], [libxul],
+          [
+            PKG_CHECK_MODULES([FIREFOX_XPCOM], [firefox-xpcom],
+              [],
+              [
+                PKG_CHECK_MODULES([MOZILLA_NSPR], [mozilla-nspr],
+                  [],
+                  [
+                    PKG_CHECK_MODULES([NSPR], [nspr],
+                      [],
+                      [
+                        AC_MSG_ERROR([Please install the nspr development tools.])
+                      ]
+                    )
+                  ]
+                )
+              ]
+            )
+            CPPFLAGS="${CPPFLAGS_save} ${XULRUNNER_CFLAGS} ${XULRUNNER_CPPFLAGS} ${FIREFOX_XPCOM_CFLAGS} ${MOZILLA_NSPR_CFLAGS} ${NSPR_CFLAGS} ${MOZILLA_CPPFLAGS}"
+            MOZILLA_REQUIRED_HEADERS=1
+            AC_CHECK_HEADERS(npapi.h,,MOZILLA_REQUIRED_HEADERS=0)
+            AC_CHECK_HEADERS(npruntime.h,,MOZILLA_REQUIRED_HEADERS=0,
+              [#if HAVE_NPAPI_H
+               # include <npapi.h>
+               #endif
+              ])
+            if test "${MOZILLA_REQUIRED_HEADERS}" = "0"; then
+                AC_MSG_ERROR([Please install the Mozilla runtime package xulrunner-devel; plugplugin/npapi.h and plugin/npruntime.h were not found.])
+            fi
+            MOZILLA_REQUIRED_HEADERS=
+            mozilla=:
+            AC_DEFINE([XP_UNIX],[1],[Defined for Mozilla as we are Unix])
+            AC_DEFINE([MOZ_X11],[1],[Defined as Unix mozilla uses X11])
+            AC_DEFINE([OJI],[1],[Java Runtime Interface])
+            AC_CHECK_HEADERS(X11/xpm.h,,AC_MSG_ERROR([Please install libXpm-devel library for required X11/xpm.h]))
+            VLC_ADD_LIBS([mozilla], [${X_LIBS} ${X_PRE_LIBS} -lX11 -lXt -lXpm])
+            VLC_ADD_CPPFLAGS([mozilla],[${CPPFLAGS}])
+            VLC_ADD_LDFLAGS([mozilla],[${MOZILLA_LDFLAGS}])
+            VLC_ADD_LIBS([mozilla],[${FIREFOX_LIBS} ${MOZILLA_NSPR_LIBS} ${NSPR_LIBS}])
+            VLC_ADD_PLUGIN([mozilla])
+            MOZILLA_CONFIG=
+            CPPFLAGS="${CPPFLAGS_save}"
+          ],
           [
             AC_PATH_PROG(MOZILLA_CONFIG, mozilla-config, no)
             if test "${MOZILLA_CONFIG}" = "no"
@@ -5443,6 +5487,8 @@ then
             fi
           ]
         )
+      ]
+    )
     if test ! -z "${MOZILLA_CONFIG}"
     then
       if ${MOZILLA_CONFIG} --defines | grep -q 'MOZ_X11=1'; then