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authorTaku Kudo <taku910@users.noreply.github.com>2018-07-29 03:48:47 +0300
committerGitHub <noreply@github.com>2018-07-29 03:48:47 +0300
commit510ba80638268104811f89f6a8f702c4d6047a5f (patch)
tree0384ce70634f2d340557b96ebcdc758dc69b3b00 /README.md
parenta0ba0b9a3d97f233174dec7d3ab9dea3d4d9c2d3 (diff)
Update README.md
Diffstat (limited to 'README.md')
-rw-r--r--README.md3
1 files changed, 2 insertions, 1 deletions
diff --git a/README.md b/README.md
index fdab72d..7f1dd98 100644
--- a/README.md
+++ b/README.md
@@ -133,10 +133,11 @@ The following tools and libraries are required to build SentencePiece:
* [cmake](https://cmake.org/)
* C++11 compiler
* [protobuf](https://github.com/google/protobuf) library
+* [gperftool](https://github.com/gperftools/gperftools) library (optional, 10-40% performance improvement can be obtained.)
On Ubuntu, autotools can be installed with apt-get:
```
-% sudo apt-get install cmake pkg-config libprotobuf9v5 protobuf-compiler libprotobuf-dev
+% sudo apt-get install cmake pkg-config libprotobuf9v5 protobuf-compiler libprotobuf-dev libgoogle-perftools-dev
```
The name of the protobuf library is different between ubuntu distros. Please enter appropriate command for your Ubuntu version.