support using system openssl & luajit

Makefile

@@ -1,4 +1,4 @@
-CFLAGS  := -std=c99 -Wall -O2 -D_REENTRANT
+CFLAGS  += -std=c99 -Wall -O2 -D_REENTRANT
 LIBS    := -lpthread -lm -lssl -lcrypto
 
 TARGET  := $(shell uname -s | tr '[A-Z]' '[a-z]' 2>/dev/null || echo unknown)
@@ -23,11 +23,25 @@ BIN  := wrk
 
 ODIR := obj
 OBJ  := $(patsubst %.c,$(ODIR)/%.o,$(SRC)) $(ODIR)/bytecode.o
+LIBS := -lluajit-5.1 $(LIBS)
 
-LIBS    := -lluajit-5.1 $(LIBS)
+DEPS    :=
 CFLAGS  += -I$(ODIR)/include
 LDFLAGS += -L$(ODIR)/lib
-DEPS    := $(ODIR)/lib/libluajit-5.1.a $(ODIR)/lib/libssl.a
+
+ifneq ($(WITH_LUAJIT),)
+	CFLAGS  += -I$(WITH_LUAJIT)/include
+	LDFLAGS += -L$(WITH_LUAJIT)/lib
+else
+	DEPS += $(ODIR)/lib/libluajit-5.1.a
+endif
+
+ifneq ($(WITH_OPENSSL),)
+	CFLAGS  += -I$(WITH_OPENSSL)/include
+	LDFLAGS += -L$(WITH_OPENSSL)/lib
+else
+	DEPS += $(ODIR)/lib/libssl.a
+endif
 
 all: $(BIN)
 
@@ -45,7 +59,7 @@ $(ODIR):
 
 $(ODIR)/bytecode.o: src/wrk.lua
 	@echo LUAJIT $<
-	@$(SHELL) -c 'obj/bin/luajit -b $(CURDIR)/$< $(CURDIR)/$@'
+	@$(SHELL) -c 'PATH=obj/bin:$(PATH) luajit -b $(CURDIR)/$< $(CURDIR)/$@'
 
 $(ODIR)/%.o : %.c
 	@echo CC $<

README

@@ -44,3 +44,24 @@ Acknowledgements
   'ae' event loop from redis, the nginx/joyent/node.js 'http-parser',
   and Mike Pall's LuaJIT. Please consult the NOTICE file for licensing
   details.
+
+Cryptography Notice
+
+  This distribution includes cryptographic software. The country in
+  which you currently reside may have restrictions on the import,
+  possession, use, and/or re-export to another country, of encryption
+  software. BEFORE using any encryption software, please check your
+  country's laws, regulations and policies concerning the import,
+  possession, or use, and re-export of encryption software, to see if
+  this is permitted. See <http://www.wassenaar.org/> for more
+  information.
+
+  The U.S. Government Department of Commerce, Bureau of Industry and
+  Security (BIS), has classified this software as Export Commodity
+  Control Number (ECCN) 5D002.C.1, which includes information security
+  software using or performing cryptographic functions with symmetric
+  algorithms. The form and manner of this distribution makes it
+  eligible for export under the License Exception ENC Technology
+  Software Unrestricted (TSU) exception (see the BIS Export
+  Administration Regulations, Section 740.13) for both object code and
+  source code.