Adding FreeBSD support, removing Chromium files, adding benchmark.

- LevelDB patch for FreeBSD. This resolves Issue 22.
  Contributed by dforsythe (thanks!).

- Removing Chromium-specific files.
  They are now going to live in the Chromium repository.

- Adding a benchmark page comparing LevelDB performance
  to SQLite and Kyoto Cabinet's TreeDB, along with
  code to generate the benchmarks.
  Thanks to Kevin Tseng for compiling the benchmarks,
  and Scott Hess and Mikio Hirabayashi for their
  help and advice.



git-svn-id: https://leveldb.googlecode.com/svn/trunk@40 62dab493-f737-651d-591e-8d6aee1b9529

Makefile

@@ -97,6 +97,7 @@ TESTS = \
 	write_batch_test
 
 PROGRAMS = db_bench $(TESTS)
+BENCHMARKS = db_bench_sqlite3 db_bench_tree_db
 
 LIBRARY = libleveldb.a
 
@@ -106,7 +107,7 @@ check: $(PROGRAMS) $(TESTS)
 	for t in $(TESTS); do echo "***** Running $$t"; ./$$t || exit 1; done
 
 clean:
-	-rm -f $(PROGRAMS) $(LIBRARY) */*.o ios-x86/*/*.o ios-arm/*/*.o
+	-rm -f $(PROGRAMS) $(BENCHMARKS) $(LIBRARY) */*.o */*/*.o ios-x86/*/*.o ios-arm/*/*.o
 	-rm -rf ios-x86/* ios-arm/*
 	-rm build_config.mk
 
@@ -117,6 +118,12 @@ $(LIBRARY): $(LIBOBJECTS)
 db_bench: db/db_bench.o $(LIBOBJECTS) $(TESTUTIL)
 	$(CC) $(LDFLAGS) db/db_bench.o $(LIBOBJECTS) $(TESTUTIL) -o $@
 
+db_bench_sqlite3: doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL)
+	$(CC) $(LDFLAGS) -lsqlite3 doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL) -o $@
+
+db_bench_tree_db: doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL)
+	$(CC) $(LDFLAGS) -lkyotocabinet doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL) -o $@
+
 arena_test: util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(CC) $(LDFLAGS) util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@
 

build_detect_platform

@@ -30,6 +30,11 @@ case `uname -s` in
         echo "PLATFORM_CFLAGS=-D_REENTRANT -DOS_SOLARIS"  >> build_config.mk
         echo "PLATFORM_LDFLAGS=-lpthread -lrt" >> build_config.mk
         ;;
+    FreeBSD)
+        PLATFORM=OS_FREEBSD
+        echo "PLATFORM_CFLAGS=-D_REENTRANT -DOS_FREEBSD"  >> build_config.mk
+        echo "PLATFORM_LDFLAGS=-lpthread" >> build_config.mk
+        ;;
     *)
         echo "Unknown platform!"
         exit 1