# SPDX-License-Identifier: Apache-2.0
# Shared definitions for all SchOS ports.
# Include this at the top of each port's Makefile:  include ../mk/port.mk
#
# Layout contract — a port directory contains ONLY hand-written files:
#
#   ports/<name>/Makefile      required
#   ports/<name>/patches/*     optional
#
# Everything generated goes under $(PORTDIR) = build/ports/<name>/ :
#
#   build/ports/<name>/src     extracted upstream tarball
#   build/ports/<name>/obj     out-of-tree build directory
#   build/ports/<name>/prefix  install prefix (musl's headers/libs land here)
#
# If a file appears inside ports/<name>/ that you did not write by hand,
# it is in the wrong place. `make clean` deletes $(PORTDIR) and nothing else.

PORTSDIR  := $(abspath $(dir $(lastword $(MAKEFILE_LIST)))/..)
TOPDIR    := $(abspath $(PORTSDIR)/..)

SYSROOT   := $(TOPDIR)/sysroot
DISTDIR   := $(TOPDIR)/dist
BUILDROOT := $(TOPDIR)/build/ports

# Verifying a downloaded tarball. Not `sha256sum -c -`: that command does not
# exist on macOS or the BSDs, and each of them spells it differently. The
# helper picks whichever of the five possibilities the host actually has.
SHA256CHECK := $(TOPDIR)/tools/posix/sha256check.sh

# Port name is the directory name — no per-port boilerplate needed.
PORT     := $(notdir $(CURDIR))
PORTDIR  := $(BUILDROOT)/$(PORT)
SRCDIR   := $(PORTDIR)/src
BUILDDIR := $(PORTDIR)/obj
PREFIX   := $(PORTDIR)/prefix

# musl is the libc every other port links against; its install prefix is a
# fixed location so ports don't need to know where musl's own source lives.
MUSL     := $(BUILDROOT)/musl/prefix

# ncurses is the second library other ports link against, so its prefix is
# fixed for the same reason musl's is. Unlike every other port it installs
# nothing into sysroot/ -- a static library is not a file the OS ships.
NCURSES  := $(BUILDROOT)/ncurses/prefix

CC      := clang
# FS register belongs to the kernel; never let the compiler touch %fs directly.
CFLAGS_BT := -fno-stack-protector

.PHONY: all download extract build install clean distclean
all: install

$(DISTDIR):
	mkdir -p $(DISTDIR)

$(SYSROOT)/bin:
	mkdir -p $@