tools/README.md

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# Building compile tools


## Requirements
* Java 8+
* Maven 3.5+
* Flex
* Bison 2.7+
* Boost
* OpenSSL 1.0+


### Mac

- Bison

 Bison 2.3 is preinstalled on OSX, but this version is too low.
 When building Thrift with Bison 2.3, the following error would pop out:

 
  ```invalid directive: '%code'```		
		
 For such case, please update `Bison`:		
		
```		
     brew install bison		
     brew link bison --force		
```
		
 Then, you need to tell the OS where the new bison is.		
		
 For Bash users:		
 ```    		
     echo 'export PATH="/usr/local/opt/bison/bin:$PATH"' >> ~/.bash_profile		
 ```
		
 For zsh users:		
 ```    		
     echo 'export PATH="/usr/local/opt/bison/bin:$PATH"' >> ~/.zshrc
 ```

- Boost

Please make sure a relative new version of Boost is ready on your machine.
If no Boost available, install the latest version of Boost:

```
    brew install boost
    brew link boost
```


- OpenSSL

Make sure the Openssl libraries has been install on your Mac.
The default Openssl include file search path is "/usr/local/opt/openssl/include".
If Openssl header files can not be found when building Thrift, please add option 
```-Dopenssl.include.dir=""``` to specify the correct directory on your Mac.

### Linux

#### Additional requirements

* g++

To install all dependencies, run:

Debian/Ubuntu:

```
sudo apt-get install gcc g++ bison flex libboost-all-dev
```

CentOS:
```
yum install gcc g++ bison flex boost-devel
```

### Windows

Make sure a complete Windows C++ building environment is prepared on your machine. 
MSVC, MinGW... are supported.

If you are using MS Visual Studio, remember to install Visual Studio C/C++ IDE and compiler(supporting CMake, Clang, MinGW).

#### Flex and Bison
Windows Flex and Bison could be downloaded from SourceForge: https://sourceforge.net/projects/winflexbison/

After downloaded, please rename the executables to flex.exe and bison.exe and add them to "PATH" environment variables.

#### Boost
For Boost, please download from the official website: https://www.boost.org/users/download/

Then build Boost by executing bootstrap.bat and b2.exe.
```
bootstrap.bat
.\b2.exe
```

To help CMake find your Boost libraries on windows, you should set `-Dboost.include.dir=${your boost header folder} -Dboost.library.dir=${your boost lib (stage) folder}`
to your mvn build command.

#### Cmake generator on Windows

There is a long list of supported Cmake generators on Windows environment. 


```
  Visual Studio 16 2019        = Generates Visual Studio 2019 project files.
                                 Use -A option to specify architecture.
  Visual Studio 15 2017 [arch] = Generates Visual Studio 2017 project files.
                                 Optional [arch] can be "Win64" or "ARM".
  Visual Studio 14 2015 [arch] = Generates Visual Studio 2015 project files.
                                 Optional [arch] can be "Win64" or "ARM".
  Visual Studio 12 2013 [arch] = Generates Visual Studio 2013 project files.
                                 Optional [arch] can be "Win64" or "ARM".
  Visual Studio 11 2012 [arch] = Generates Visual Studio 2012 project files.
                                 Optional [arch] can be "Win64" or "ARM".
  Visual Studio 10 2010 [arch] = Generates Visual Studio 2010 project files.
                                 Optional [arch] can be "Win64" or "IA64".
  Visual Studio 9 2008 [arch]  = Generates Visual Studio 2008 project files.
                                 Optional [arch] can be "Win64" or "IA64".
  Borland Makefiles            = Generates Borland makefiles.
* NMake Makefiles              = Generates NMake makefiles.
  NMake Makefiles JOM          = Generates JOM makefiles.
  MSYS Makefiles               = Generates MSYS makefiles.
  MinGW Makefiles              = Generates a make file for use with
                                 mingw32-make.
  Unix Makefiles               = Generates standard UNIX makefiles.
  Green Hills MULTI            = Generates Green Hills MULTI files
                                 (experimental, work-in-progress).
  Ninja                        = Generates build.ninja files.
  Ninja Multi-Config           = Generates build-<Config>.ninja files.
  Watcom WMake                 = Generates Watcom WMake makefiles.
  CodeBlocks - MinGW Makefiles = Generates CodeBlocks project files.
  CodeBlocks - NMake Makefiles = Generates CodeBlocks project files.
  CodeBlocks - NMake Makefiles = Generates CodeBlocks project fi

```
(the list is gotten by `cmake --help`.)

When building client-cpp project, use -Dcmake.generator="" option to specify a Cmake generator.
E.g., `mvn package -Dcmake.generator="Visual Studio 15 2017 [arch]"`


### FAQ

#### on Mac

if you occur some errors when compiling thrift source code, try to downgrade your xcode-commandline from 12 to 11.5

see https://stackoverflow.com/questions/63592445/ld-unsupported-tapi-file-type-tapi-tbd-in-yaml-file/65518087#65518087

#### on Windows

When Building Thrift and downloading packages via "wget", a possible annoying issue may occur with
error message looks like:
```
Failed to delete cached file C:\Users\Administrator\.m2\repository\.cache\download-maven-plugin\index.ser
```
Possible fix:
- Try to delete the ".m2\repository\\.cache\" directory and try again.
- Add "\<skipCache>true\</skipCache>" configuration to the download-maven-plugin maven phase that complains this error.