Add new port

1. Create directory with your port name in /source/myport/ (/source/myport/<YOUR_PORT_NAME>)
2. In created directory create Makefile.mk with content:

# List of directories for search source files (*.c)
# for example:
# . -- /source/myport/<YOUR_PORT_NAME>/
# utils -- /source/myport/<YOUR_PORT_NAME>/utils/
myport_dirs := .

# Next, we leave everything unchanged
myport_objs := $(call MODEST_UTILS_OBJS,$(call MyPORT_SELECTED_PORT),$(myport_dirs))
myport_all: $(myport_objs)
myport_clean: 
	rm -f $(myport_objs)

Please, see example

3. In created directory create Rules.mk with content:

# Condition for include this port to build library
ifeq ($(OS),BEST_OS_EVER)
	MODEST_CFLAGS += -fPIC
	LIB_NAME_SUFFIX := .dylib

    # Important! Required!
	# Sets -DMODEST_BUILD_OS for all sources file in build moment
	MODEST_BUILD_OS := $(OS)
    # By this variable we call this port for including in build
	MODEST_PORT_NAME := <YOUR_PORT_NAME>
endif

Change all <YOUR_PORT_NAME> to your port name, it must be match by created directory name in /source/myport/.

Please, see example

4. Done

By default, build system try to find all Rules.mk files in /source/myport/*/Rules.mk and try to find correct rule for your OS.

For example, how to build the library with selected port manually:

make OS=BEST_OS_EVER

if not need include/test others ports before build, only your, you can run build with command:

make MODEST_BUILD_OS=BEST_OS_EVER MODEST_PORT_NAME=<YOUR_PORT_NAME>

New port required basic functions for work with memory, io, threads (if build with threads, default) Example with all required function you can find in POSIX port