commit https://github.com/vim/vim/commit/7a84dbe6be0ef0e1ffbb7148cfe4ab50b9ba8f41 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 7 21:29:00 2016 +0100 patch 7.4.1286 Problem: ch_open() with a timeout doesn't work correctly. Solution: Change how select() is used. Don't give an error on timeout. Add a test for ch_open() failing.

# The most simplistic Makefile, for MinGW and Cygwin gcc on MS-DOS

ifndef USEDLL
USEDLL = no
endif

ifeq (yes, $(USEDLL))
DEFINES =
LIBS    = -lc
else
DEFINES =
LIBS    =
endif

CC = gcc
CFLAGS = -O2 -Wall -DWIN32 $(DEFINES)

ifneq (sh.exe, $(SHELL))
DEL = rm
else
DEL = del
endif

xxd.exe: xxd.c
	$(CC) $(CFLAGS) -s -o xxd.exe xxd.c $(LIBS)

clean:
	-$(DEL) xxd.exe