• Generate patches with git diff --patch --minimal -b

Download and unpack the tarball into libev/. Remove these extra files:

rm -f libev/Makefile.am
rm -f libev/Symbols.ev
rm -f libev/Symbols.event
rm -f libev/TODO
rm -f libev/aclocal.m4
rm -f libev/autogen.sh
rm -f libev/compile
rm -f libev/configure.ac
rm -f libev/libev.m4
rm -f libev/mkinstalldirs

Check if 'config.guess' and/or 'config.sub' went backwards in time (the 'timestamp' and 'copyright' dates). If so, revert it (or update from the latest source http://git.savannah.gnu.org/gitweb/?p=config.git;a=tree )

• Download and clean up the c-ares Makefile.in[c] to empty out the MANPAGES variables so that we don't have to ship those in the sdist:

  export CARES_VER=1.15.0
  
  cd deps/
  wget https://c-ares.haxx.se/download/c-ares-$CARES_VER.tar.gz
  tar -xf c-ares-$CARES_VER.tar.gz
  rm -rf c-ares c-ares-$CARES_VER.tar.gz
  mv c-ares-$CARES_VER c-ares
  cp c-ares/include/ares_build.h c-ares/include/ares_build.h.dist
  rm -rf c-ares/docs
  rm -rf c-ares/test
  rm -f c-ares/maketgz
  rm -f c-ares/CMakeLists.txt
  rm -f c-ares/RELEASE-PROCEDURE.md c-ares/CONTRIBUTING.md c-ares/SECURITY.md
  rm -f c-ares/*.cmake c-ares/*.cmake.in
  rm -f c-ares/buildconf.bat
  git apply cares-make.patch
  

  At this point there might be new files in c-ares that need added to git, evaluate them and add them.

• Follow the same 'config.guess' and 'config.sub' steps as libev.

• Clean up the libuv tree, and apply the patches to libuv (this whole sequence is meant to be copied and pasted into the terminal):

  export LIBUV_VER=v1.38.0
  
  cd deps/
  wget https://dist.libuv.org/dist/$LIBUV_VER/libuv-$LIBUV_VER.tar.gz
  tar -xf libuv-$LIBUV_VER.tar.gz
  rm libuv-$LIBUV_VER.tar.gz
  rm -rf libuv
  mv libuv-$LIBUV_VER libuv
  rm -rf libuv/.github
  rm -rf libuv/docs
  rm -rf libuv/samples
  rm -rf libuv/test/*.[ch] libuv/test/test.gyp # must leave the fixtures/ dir
  rm -rf libuv/tools
  rm -f libuv/android-configure*
  rm -f libuv/uv_win_longpath.manifest
  

At this point there might be new files in libuv that need added to git and the build process. Evaluate those and add them to git and to src/gevent/libuv/_corecffi_build.py as needed. Then check if there are changes to the build system (e.g., the .gyp files) that need to be accounted for in our build file.

• Follow the same 'config.guess' and 'config.sub' steps as libev.