Auto merge of #173 - servo:profiling, r=emilio

Add a cargo feature for profiling.

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Author: bors-servo

Cargo.toml

@@ -2,7 +2,7 @@
 name = "mozjs_sys"
 description = "System crate for the Mozilla SpiderMonkey JavaScript engine."
 repository = "https://github.com/servo/mozjs/"
-version = "0.61.7"
+version = "0.61.8"
 authors = ["Mozilla"]
 links = "mozjs"
 build = "build.rs"
@@ -17,6 +17,7 @@ exclude = [
 
 [features]
 debugmozjs = []
+profilemozjs = []
 
 [lib]
 name = "mozjs_sys"

makefile.cargo

@@ -92,6 +92,10 @@ ifneq (,$(CARGO_FEATURE_DEBUGMOZJS))
 	CONFIGURE_FLAGS += --enable-debug --disable-optimize --enable-gczeal
 endif
 
+ifneq (,$(CARGO_FEATURE_PROFILEMOZJS))
+	CONFIGURE_FLAGS += --enable-profiling
+endif
+
 ifneq (,$(CCACHE))
 	CONFIGURE_FLAGS += --with-ccache=$(CCACHE)
 endif