Bug 1478499 - Specify the symbol version script for js with SYMBOLS_FILE. r=mshal

To make this work correctly we need to start respecting SYMBOLS_FILE under
js/src, so we start setting GCC_USE_GNU_LD in js/src/config.status to get
this wired up.

MozReview-Commit-ID: Fn2Q8nwQukv

--HG--
extra : rebase_source : 27acaf885562f83fd5f0b7655f9aa8cd2032ad8b

js/src/build/moz.build

@@ -33,7 +33,7 @@ if CONFIG['JS_SHARED_LIBRARY']:
         GENERATED_FILES['symverscript'].flags = [
             CONFIG['JS_LIBRARY_NAME'].replace('-', '_'),
         ]
-        LDFLAGS += ['-Wl,-version-script,symverscript']
+        SYMBOLS_FILE = '!symverscript'
 else:
     Library('js')
 

js/src/old-configure.in

@@ -1819,6 +1819,8 @@ AC_SUBST(HOST_BIN_SUFFIX)
 
 AC_SUBST(TARGET_XPCOM_ABI)
 
+AC_SUBST(GCC_USE_GNU_LD)
+
 AC_SUBST(MKSHLIB)
 AC_SUBST(MKCSHLIB)
 AC_SUBST_LIST(DSO_CFLAGS)