# Setting Up

## Development

• ./configure –with-pydebug && make -j

• ./python.exe -m test -j3

### Compile

• Misc/SpecialBuilds.txt compilation flags

• Py_DEBUG use for “pydebug” build to catch common issues

#### Clang

Handy CFLAGS

• -Wno-unused-value

• -Wno-empty-body

• -Qunused-arguments

• -Wno-parentheses-equality if using clang with ccache

• -no-integrated-as if using LLVM 2.8 which is needed to build ctype module

### Dependencies

xcode-select –install

The above generally works. For macOS Mojave 10.14, the following needs to be executed as well:

`bash open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg `

Building with openssl from brew:

` brew install openssl xz ./configure --with-pydebug --with-openssl=$(brew --prefix openssl) make -s -j2 `

### make

The CPython Makefile is generated when you run ./configure.

Makefile.pre is used to generate a Makefile specific to your compile system

### [Generic C] Handy compile options

• -g debug

• -Wall warnings all

• -O3 or -O1 optimization levels