Bug 596106 - Ensure we can link when using gcc instead of Sun Studio Compiler. r=khuey

toolkit/library/Makefile.in

@@ -237,8 +237,12 @@ EXTRA_DSO_LDOPTS += -lbe -ltracker
 endif
 
 ifeq ($(OS_ARCH),SunOS)
+ifdef GNU_CC
+EXTRA_DSO_LDOPTS += -lelf
+else
 EXTRA_DSO_LDOPTS += -lelf -ldemangle
 endif
+endif
 
 ifeq ($(OS_ARCH),WINNT)
 OS_LIBS += $(call EXPAND_LIBNAME,shell32 ole32 uuid version winspool comdlg32 imm32 winmm wsock32 msimg32 shlwapi psapi)