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#
# Makefile for NetSurf
#
# Copyright 2007 Daniel Silverstone <dsilvers@netsurf-browser.org>
#
#

# Trivially, invoke as:
#   make -f Makefile.unix
# to build native, or:
#   make -f Makefile.unix TARGET=riscos
# to cross-build for RO.
#
# Thus-far only tested on unix platforms.  on RO in theory it ought to
# work as per the native build.
#
# To clean, invoke as above, with the 'clean' target
#

all: all-program

# Determine host type
HOST_SYSTEM := $(shell uname -s)

ifeq ($(HOST_SYSTEM),riscos)
# Native build on RO
HOST=riscos
ifeq ($(TARGET),)
TARGET := riscos
endif
else
HOST=unix
ifeq ($(TARGET),)
TARGET := gtk
endif
endif

Q=@
VQ=@
PERL=perl
MKDIR=mkdir
TOUCH=touch

OBJROOT := $(HOST)-$(TARGET)

$(OBJROOT)/created:
	$(VQ)echo "   MKDIR: $(OBJROOT)"
	$(Q)$(MKDIR) $(OBJROOT)
	$(Q)$(TOUCH) $(OBJROOT)/created

DEPROOT := $(OBJROOT)/deps
$(DEPROOT)/created: $(OBJROOT)/created
	$(VQ)echo "   MKDIR: $(DEPROOT)"
	$(Q)$(MKDIR) $(DEPROOT)
	$(Q)$(TOUCH) $(DEPROOT)/created

#WARNFLAGS = -W -Wall -Wundef -Wpointer-arith -Wcast-qual \
#	-Wcast-align -Wwrite-strings -Wstrict-prototypes \
#	-Wmissing-prototypes -Wmissing-declarations -Wredundant-decls \
#	-Wnested-externs -Winline -Wno-unused-parameter -Wuninitialized

STARTGROUP := -Wl,--start-group
ENDGROUP := -Wl,--end-group

ifeq ($(TARGET),riscos)
ifeq ($(HOST),riscos)
# Build for RO on RO
CC := gcc
else
# Cross-build for RO
CC := /home/riscos/cross/bin/gcc
endif
STARTGROUP :=
ENDGROUP :=
endif

LDFLAGS := -lxml2 -lz -lm -lcurl -lssl -lcrypto -lmng \
	-ljpeg

ifeq ($(TARGET),gtk)
# Building for GTK, we need the GTK flags

GTKCFLAGS := -std=c99 -Dgtk -Dnsgtk \
	-DGTK_DISABLE_DEPRECATED \
	-D_BSD_SOURCE \
	-D_XOPEN_SOURCE=600 \
	-D_POSIX_C_SOURCE=200112L \
	$(WARNFLAGS) -I. -g -O \
	$(shell pkg-config --cflags libglade-2.0 gtk+-2.0 librsvg-2.0) \
	$(shell xml2-config --cflags)

GTKLDFLAGS := $(shell pkg-config --cflags --libs libglade-2.0 gtk+-2.0 gthread-2.0 gmodule-2.0 librsvg-2.0)
CFLAGS += $(GTKCFLAGS)
LDFLAGS += $(GTKLDFLAGS) -llcms

ifneq ($(HOST),riscos)
ifeq ($(shell uname -s),Windows_NT)
CFLAGS += -U__STRICT_ANSI__
endif
endif

endif

ifeq ($(TARGET),riscos)
GCCSDK_INSTALL_ENV := /home/riscos/env

CFLAGS += -I. -O $(WARNFLAGS) -Driscos -std=c99 -D_BSD_SOURCE

CFLAGS += -I$(GCCSDK_INSTALL_ENV)/include		\
	-I$(GCCSDK_INSTALL_ENV)/include/libxml2		\
	-I$(GCCSDK_INSTALL_ENV)/include/libmng
ASFLAGS += -I. -I$(GCCSDK_INSTALL_ENV)/include
LDFLAGS += -L$(GCCSDK_INSTALL_ENV)/lib -lcares -lOSLib32 -lrufl -lpencil
endif

CLEANS := clean-target

include Makefile.sources

OBJECTS := $(addprefix $(OBJROOT)/,$(subst /,_,$(patsubst %.c,%.o,$(patsubst %.s,%.o,$(SOURCES)))))

$(EXETARGET): $(OBJECTS)
	$(VQ)echo "    LINK: $(EXETARGET)"
	$(Q)$(CC) -o $(EXETARGET) $(STARTGROUP) $(OBJECTS) $(ENDGROUP) $(LDFLAGS)

clean-target:
	$(VQ)echo "   CLEAN: $(EXETARGET)"
	$(Q)$(RM) $(EXETARGET)

clean-builddir:
	$(VQ)echo "   CLEAN: $(OBJROOT)"
	$(Q)$(RM) -r $(OBJROOT)
CLEANS += clean-builddir

all-program: $(EXETARGET)

.SUFFIXES:

DEPFILES :=
# Now some macros which build the make system

# 1 = Source file
# 2 = dep filename, no prefix
# 3 = obj filename, no prefix
define dependency_generate_c
DEPFILES += $(2)
$$(DEPROOT)/$(2): $$(DEPROOT)/created $(1) css/css_enum.h css/parser.h
	$$(VQ)echo "     DEP: $(1)"
	$$(Q)( \
		(echo -n "$$(DEPROOT)/$2 $$(OBJROOT)/$(3)"; \
		$$(CC) -M $$(CFLAGS) $(1) | \
		$$(PERL) -pe's/^.+(:.+)$$$$/$$$$1/') > $$(DEPROOT)/$(2) \
	) || ($$(RM) $$(DEPROOT)/$(2) ; exit 1)

endef

# 1 = Source file
# 2 = dep filename, no prefix
# 3 = obj filename, no prefix
define dependency_generate_s
DEPFILES += $(2)
$$(DEPROOT)/$(2): $$(DEPROOT)/created $(1)
	$$(VQ)echo "     DEP: $(1)"
	$$(Q)( \
		(echo -n "$$(DEPROOT)/$2 $$(OBJROOT)/$(3)"; \
		$$(CC) -M $$(ASFLAGS) $(1) | \
		$$(PERL) -pe's/^.+(:.+)$$$$/$$$$1/') > $$(DEPROOT)/$(2) \
	) || $$(RM) $$(DEPROOT)/$(2)

endef

# 1 = Source file
# 2 = obj filename, no prefix
# 3 = dep filename, no prefix
define compile_target_c
$$(OBJROOT)/$(2): $$(OBJROOT)/created $$(DEPROOT)/$(3)
	$$(VQ)echo " COMPILE: $(1)"
	$$(Q)$$(CC) $$(CFLAGS) -o $$@ -c $(1)

endef

# 1 = Source file
# 2 = obj filename, no prefix
# 3 = dep filename, no prefix
define compile_target_s
$$(OBJROOT)/$(2): $$(OBJROOT)/created
	$$(VQ)echo " ASSEMBLE: $(1)"
	$$(Q)$$(CC) $$(ASFLAGS) -o $$@ -c $(1)

endef

# Rules to construct dep lines for each object...
$(eval $(foreach SOURCE,$(filter %.c,$(SOURCES)), \
	$(call dependency_generate_c,$(SOURCE),$(subst /,_,$(SOURCE:.c=.d)),$(subst /,_,$(SOURCE:.c=.o)))))

# Cannot currently generate dep files for S files because they're objasm
# when we move to gas format, we will be able to.

#$(eval $(foreach SOURCE,$(filter %.s,$(SOURCES)), \
#	$(call dependency_generate_s,$(SOURCE),$(subst /,_,$(SOURCE:.s=.d)),$(subst /,_,$(SOURCE:.s=.o)))))

ifneq ($(MAKECMDGOALS),clean)
-include $(addprefix $(DEPROOT)/,$(DEPFILES))
endif

# And rules to build the objects themselves...

$(eval $(foreach SOURCE,$(filter %.c,$(SOURCES)), \
	$(call compile_target_c,$(SOURCE),$(subst /,_,$(SOURCE:.c=.o)),$(subst /,_,$(SOURCE:.c=.d)))))

$(eval $(foreach SOURCE,$(filter %.s,$(SOURCES)), \
	$(call compile_target_s,$(SOURCE),$(subst /,_,$(SOURCE:.s=.o)),$(subst /,_,$(SOURCE:.s=.d)))))


clean: $(CLEANS)