Merge pull request #15 from navytux/y/pkgconfig

Switch to pkg-config to detect libsqlite3 CFLAGS/LDFLAGS

README.md

@@ -29,7 +29,8 @@ $ cp ~/Downloads/sqlite-amalgamation-xxx/sqlite3.{c,h} $GOPATH/src/github.com/gw
 - patch sqlite.go file
 
 ```
--#cgo LDFLAGS: -lsqlite3
+-#cgo linux freebsd pkg-config: sqlite3
+-#cgo !linux,!freebsd LDFLAGS: -lsqlite3
 +#cgo CFLAGS: -I.
 +#cgo CFLAGS: -DSQLITE_ENABLE_COLUMN_METADATA=1
 ```

sqlite.go

@@ -6,9 +6,8 @@
 package sqlite
 
 /*
-#cgo LDFLAGS: -lsqlite3
-#cgo freebsd LDFLAGS: -lsqlite3 -L/usr/local/lib
-#cgo freebsd CFLAGS: -I/usr/local/include
+#cgo linux freebsd pkg-config: sqlite3
+#cgo !linux,!freebsd LDFLAGS: -lsqlite3
 
 #include <sqlite3.h>
 #include <stdlib.h>