Another mac travis fix

Summary:
And instructions for using it outside of travis
Closes facebook#158

Differential Revision: D5247190

Pulled By: uddipta

fbshipit-source-id: 0f1189f44ae701c3c6782f1f9dae3269c6e15bb6

Author: ldemailly

build/BUILD.md

@@ -90,8 +90,12 @@ Open the terminal application and type "git" or "make" to be prompted to install
 
 ## Using the contbuild script locally
 
+This is quite heavy handed (manual/brew steps are better) but should work because travis works
+
 ```sh
-source travis_osx.sh
+git clone https://github.com/facebook/wdt.git
+cd wdt
+source build/travis_osx.sh
 mkdir ../build && cd ../build
 cmake ../wdt -DBUILD_TESTING=1
 make -j

build/travis_osx.sh

@@ -28,7 +28,7 @@ mkdir double-conversion-build
 git clone https://github.com/schuhschuh/gflags.git
 (mkdir gflags-build; cd gflags-build; cmake -DCMAKE_INSTALL_PREFIX=$HOME -DGFLAGS_NAMESPACE=google -DBUILD_SHARED_LIBS=on ../gflags && make -j 4 && make install)
 git clone https://github.com/google/glog.git
-( cd glog && ./configure --with-gflags=$HOME --prefix=$HOME && make -j 4 && make install )
+( cd glog && ./autogen.sh && ./configure --with-gflags=$HOME --prefix=$HOME && make -j 4 && make install )
 git clone https://github.com/facebook/folly.git
 pwd ; ls -l
 cd wdt