# -*- makefile -*- for the C-level run-time support for SBCL

# This software is part of the SBCL system. See the README file for
# more information.
#
# This software is derived from the CMU CL system, which was
# written at Carnegie Mellon University and released into the
# public domain. The software is in the public domain and is
# provided with absolutely no warranty. See the COPYING and CREDITS
# files for more information.

CFLAGS = -g -Wall -O2 -fdollars-in-identifiers
OS_SRC = bsd-os.c x86-bsd-os.c darwin-os.c x86-darwin-os.c darwin-dlshim.c darwin-langinfo.c
OS_LIBS = -lSystem -lc -ldl
OS_OBJS = x86-darwin-rospace.o

CC = gcc

ASSEM_SRC = x86-assem.S ldso-stubs.S
ARCH_SRC = x86-arch.c

CPPFLAGS += -no-cpp-precomp

# KLUDGE: in OS X 10.3, Apple started putting the heap right where we
# expect our read-only space mapped. This hack causes the linker to
# place a zero-fill-on-demand segment in the same place and size as
# read-only-space, which is the only thing capable of keeping malloc
# out of this range.
LINKFLAGS += -dynamic `cat x86-darwin-link-flags` -twolevel_namespace -bind_at_load

GC_SRC = gencgc.c

OS_CLEAN_FILES += x86-darwin-mkrospace x86-darwin-fix-rospace x86-darwin-link-flags

x86-darwin-mkrospace: x86-darwin-mkrospace.c
	$(CC) -g -Wall -pedantic -o $@ $<

x86-darwin-fix-rospace: x86-darwin-fix-rospace.c
	$(CC) -g -Wall -pedantic -o $@ $<

x86-darwin-rospace.o x86-darwin-link-flags: x86-darwin-mkrospace
	./x86-darwin-mkrospace > x86-darwin-link-flags

.PHONY: after-grovel-headers

# Fix the sbcl runtime to avoid Panther placing the heap where
# it wants read only space (in the first 32 megabytes, where it
# can be absolute-branched to with BA.)  Must be done after 
# grovel-headers, because Apple's nm is broken.
after-grovel-headers: x86-darwin-fix-rospace
	./x86-darwin-fix-rospace

# Fortunatly make-target-1.sh does a make clean all the time.
# Otherwise we would have to make sure that sbcl gets rebuilt without
# the readonlyspace hack before groveling headers again.