# Main top-level makefile fragment for the vx32 virtual machine.

# Compiler flags common to both host and VX32 environment files.
COMMON_CFLAGS = -m32  -g -O2 -MD -std=gnu99 -I. -fno-stack-protector $(CFLAGS) -DARCH=i386
COMMON_LDFLAGS = -g -L. $(LDFLAGS)

ifeq ($(OS),darwin)
	COMMON_CFLAGS += -m32 -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -DARCH=i386
	COMMON_LDFLAGS += -m32
endif

 # Host environment compiler options
HOST_CC		:= $(CC) -fno-inline -m32  -DARCH=i386
ifeq ($(OS),darwin)
	HOST_CC		:= $(HOST_CC)  -D_XOPEN_SOURCE
endif
HOST_LD		:= $(LD) -arch i386
HOST_AR		:= $(AR)
HOST_LDFLAGS	:= $(COMMON_LDFLAGS)
HOST_CFLAGS	:= $(COMMON_CFLAGS)

# VX32 environment compiler options
# If you build your own vx32-specific copies of the GNU
# tools (see README), you can refer to them here. 
# On most x86 systems, though, the standard gcc is fine.
# VX32_CC		:= vx32-gcc
# VX32_LD		:= vx32-ld
# VX32_AR		:= vx32-ar
# VX32_OBJCOPY	:= vx32-objcopy
VX32_CC		:= gcc -m32
VX32_LD		:= ld -melf_i386
VX32_AR		:= ar
VX32_OBJCOPY	:= objcopy

VX32_CFLAGS := -nostdinc -Ilibvxc/include $(COMMON_CFLAGS)
VX32_CFLAGS += $(shell $(VX32_CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)

VX32_LDFLAGS := -Llibvxc -L$(dir $(shell $(VX32_CC) -print-libgcc-file-name)) \
		$(COMMON_LDFLAGS) libvxc/vx32/crt0.o
VX32_LDLIBS := -lc -lgcc

# Set compiler options if we should generate x87 FPU code.
HAVE_X87 = yes
ifdef HAVE_X87
VX32_CFLAGS += -m80387 -mfp-ret-in-387
endif


INSTALL = install

# there's only one thing we really care about. 9vx
9vx/9vx:
# Make sure that 'all' is the first target
all: 

# Install libvx32 too
install: 9vx/install libvxc/install vxlinux/install vxrun/install

# Eliminate default suffix rules
.SUFFIXES:

# Delete target files if there is an error (or make is interrupted)
.DELETE_ON_ERROR:


# Include Makefrags for subdirectories
include libvxc/Makefrag
include libvx32/Makefrag
include vxrun/Makefrag
include vxlinux/Makefrag
include vxa/Makefrag		# VXA decoders
include hash/Makefrag		# cryptographic hash algorithms
include micro/Makefrag		# microbenchmarks
include 9vx/Makefrag	# Plan 9 VX
include test/Makefrag		# vx32 tests

DEPS_FILES := $(wildcard */*.d */*/*.d */*/*/*.d)
CLEAN_FILES += .deps $(DEPS_FILES)

clean:
	rm -f $(CLEAN_FILES)

# This magic automatically generates makefile dependencies
# for header files included from C source files we compile,
# and keeps those dependencies up-to-date every time we recompile.
# See 'mergedep.pl' for more information.
.deps: $(DEPS_FILES)
	@mkdir -p $(@D)
	@$(PERL) $(top_srcdir)/mergedep.pl $@ $^

-include .deps