Bug 1353259 - Remove build system parts that generate a dtrace ELF ob…

…ject. r=mshal

The code doing that was already excluding OSX, so we obviously don't
need it on OSX. On FreeBSD, afaict, USDT (userspace dtrace) probes don't
require that extra ELF object. Solaris presumably does, but the 6 years
old bug 702179 says it's not been working for that long, and configure
doesn't support Solaris targets anyways.

Keeping this build system code working past the changes coming in bug
1262241 is not guaranteed and can't be tested, so I'd rather get rid of
effectively dead code rather than trying to maybe not break it while
moving it.

--HG--
extra : rebase_source : b41ab77804c17529e2580ced8e8b5fd302ff7831

config/rules.mk

@@ -744,11 +744,6 @@ ifndef CROSS_COMPILE
 	$(call CHECK_STDCXX,$@)
 endif
 
-ifdef DTRACE_PROBE_OBJ
-EXTRA_DEPS += $(DTRACE_PROBE_OBJ)
-OBJS += $(DTRACE_PROBE_OBJ)
-endif
-
 $(filter %.$(LIB_SUFFIX),$(LIBRARY)): $(OBJS) $(STATIC_LIBS_DEPS) $(filter %.$(LIB_SUFFIX),$(EXTRA_LIBS)) $(EXTRA_DEPS) $(GLOBAL_DEPS)
 	$(REPORT_BUILD)
 # Always remove both library and library descriptor
@@ -777,16 +772,6 @@ $(HOST_LIBRARY): $(HOST_OBJS) Makefile
 	$(RM) $@
 	$(EXPAND_LIBS_EXEC) --extract -- $(HOST_AR) $(HOST_AR_FLAGS) $(HOST_OBJS)
 
-ifdef HAVE_DTRACE
-ifndef XP_MACOSX
-ifdef DTRACE_PROBE_OBJ
-NON_DTRACE_OBJS := $(filter-out $(DTRACE_PROBE_OBJ),$(OBJS))
-$(DTRACE_PROBE_OBJ): $(NON_DTRACE_OBJS)
-	dtrace -x nolibs -G -C -s $(MOZILLA_DTRACE_SRC) -o $(DTRACE_PROBE_OBJ) $(NON_DTRACE_OBJS)
-endif
-endif
-endif
-
 # On Darwin (Mac OS X), dwarf2 debugging uses debug info left in .o files,
 # so instead of deleting .o files after repacking them into a dylib, we make
 # symlinks back to the originals. The symlinks are a no-op for stabs debugging,

js/src/Makefile.in

@@ -18,13 +18,6 @@ DASH_R		= -r
 
 USE_HOST_CXX = 1
 
-ifdef HAVE_DTRACE
-ifneq ($(OS_ARCH),Darwin)
-DTRACE_PROBE_OBJ = $(LIBRARY_NAME)-dtrace.$(OBJ_SUFFIX)
-endif
-MOZILLA_DTRACE_SRC = $(srcdir)/devtools/javascript-trace.d
-endif
-
 # Ensure symbol versions of shared library on Linux do not conflict
 # with those in libxul.
 ifeq (Linux,$(OS_TARGET))