Add support for profiling

doc/profiling.md

@@ -0,0 +1,15 @@
+# How to do profiling
+
+## Build with profiling enabled
+Either edit src/Makefile.default or start make like this:
+```
+PROFILING=1 make -f Makefile.yourOS
+```
+
+## Advice
+neucoin uses a lot of CPU (mostly scrypt) while reading the block database
+during startup. This might bias the tests you are doing, so it is best
+to first collect profiling data of a startup sequence and copy this
+away to not be overwritten. Then start neucoin again and actually do
+your test. Later you can use the data from the startup sequence to
+calibrate your test data.

src/Makefile.default

@@ -1,3 +1,5 @@
+PROFILING ?= 0
+
 CONSTANTS ?= constants.cpp
 
 BOOST_SUFFIX ?= #NO SUFFIX
@@ -18,6 +20,12 @@ ifeq ($(USE_UPNP),1)
     LIBRARIES_QT += miniupnpc
 endif
 
+ifeq ($(PROFILING),1)
+   CXXFLAGS += -g -pg
+   LDFLAGS_HEADLESS += -g -pg
+   LDFLAGS_QT += -g -pg
+endif
+
 SOURCES_COMMON = \
   $(CONSTANTS) \
   CheckClientSanity.cpp \