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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# GNU Make based build file. For details on GNU Make see:
# http://www.gnu.org/software/make/manual/make.html
#
#
#
# Macros for TOOLS
#
# We use the C++ compiler for everything and then use the -Wl,-as-needed flag
# in the linker to drop libc++ unless it's actually needed.
#
HOST_CC?=gcc
HOST_CXX?=g++
HOST_LINK?=g++
HOST_LIB?=ar r
ifeq (,$(findstring gcc,$(shell $(WHICH) gcc)))
$(warning To skip the host build use:)
$(warning "make all_versions NO_HOST_BUILDS=1")
$(error Unable to find gcc in PATH while building Host build)
endif
LINUX_WARNINGS?=-Wno-long-long
LINUX_CCFLAGS=-fPIC -pthread $(LINUX_WARNINGS) -I$(NACL_SDK_ROOT)/include -I$(NACL_SDK_ROOT)/include/linux
#
# Individual Macros
#
# $1 = Source Name
# $2 = Compile Flags
#
define C_COMPILER_RULE
-include $(OUTDIR)/$(basename $(1)).d
$(OUTDIR)/$(basename $(1)).o : $(1) $(TOP_MAKE) | $(dir $(OUTDIR)/$(basename $(1)))dir.stamp
$(HOST_CC) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(2) $(LINUX_FLAGS)
endef
define CXX_COMPILER_RULE
-include $(OUTDIR)/$(basename $(1)).d
$(OUTDIR)/$(basename $(1)).o : $(1) $(TOP_MAKE) |$(dir $(OUTDIR)/$(basename $(1)))dir.stamp
$(HOST_CXX) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(2) $(LINUX_FLAGS)
endef
# $1 = Source Name
# $2 = POSIX Compile Flags
# $3 = VC Flags (unused)
#
define COMPILE_RULE
ifeq ('.c','$(suffix $(1))')
$(call C_COMPILER_RULE,$(1),$(2) $(foreach inc,$(INC_PATHS),-I$(inc)))
else
$(call CXX_COMPILER_RULE,$(1),$(2) $(foreach inc,$(INC_PATHS),-I$(inc)))
endif
endef
#
# SO Macro
#
# $1 = Target Name
# $2 = List of Sources
#
#
define SO_RULE
$(error 'Shared libraries not supported by Host')
endef
#
# LIB Macro
#
# $1 = Target Name
# $2 = List of Sources
#
#
define LIB_RULE
$(STAMPDIR)/$(1).stamp : $(NACL_SDK_ROOT)/lib/$(OSNAME)_host/$(CONFIG)/lib$(1).a
@echo "TOUCHED $$@" > $(STAMPDIR)/$(1).stamp
all:$(NACL_SDK_ROOT)/lib/$(OSNAME)_host/$(CONFIG)/lib$(1).a
$(NACL_SDK_ROOT)/lib/$(OSNAME)_host/$(CONFIG)/lib$(1).a : $(foreach src,$(2),$(OUTDIR)/$(basename $(src)).o)
$(MKDIR) -p $$(dir $$@)
$(HOST_LIB) $$@ $$^
endef
#
# Link Macro
#
# $1 = Target Name
# $2 = List of inputs
# $3 = List of libs
# $4 = List of deps
# $5 = List of lib dirs
# $6 = Other Linker Args
#
define LINKER_RULE
all: $(1)
$(1) : $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
$(HOST_LINK) -shared -o $(1) $(2) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6)
endef
#
# Link Macro
#
# $1 = Target Name
# $2 = List of Sources
# $3 = List of LIBS
# $4 = List of DEPS
# $5 = POSIX Linker Switches
# $6 = VC Linker Switches
#
define LINK_RULE
$(call LINKER_RULE,$(OUTDIR)/$(1)$(HOST_EXT),$(foreach src,$(2),$(OUTDIR)/$(basename $(src)).o),$(filter-out pthread,$(3)),$(4),$(LIB_PATHS),$(5))
endef
#
# NMF Manifiest generation
#
# Use the python script create_nmf to scan the binaries for dependencies using
# objdump. Pass in the (-L) paths to the default library toolchains so that we
# can find those libraries and have it automatically copy the files (-s) to
# the target directory for us.
#
# $1 = Target Name (the basename of the nmf
# $2 = Additional create_nmf.py arguments
#
NMF:=python $(NACL_SDK_ROOT)/tools/create_nmf.py
define NMF_RULE
NMF_LIST+=$(OUTDIR)/$(1).nmf
$(OUTDIR)/$(1).nmf : $(OUTDIR)/$(1)$(HOST_EXT)
@echo "Host Toolchain" > $$@
endef
all : $(LIB_LIST) $(DEPS_LIST) $(NMF_LIST)
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