Makefile.common

# Copyright 2016 WebAssembly Community Group participants
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Build debug: make
#            : make DEBUG=1
# Build release: make RELEASE=1

# Note: If using -jN, be sure to run "make gen" first.

# Include rules for parameterizing the build.

# Defines whether we are building bootstrapped subsystem, so that we can
# generate corresponding source files.

CXX := clang++
EXE :=
CXX_BOOT := $(CXX)

ifndef GEN
  GEN=0
endif

ifndef GENSRCS
  GENSRCS=0
endif

# Define if updating tests
ifndef UPDATE
  UPDATE=0
endif

# Define if release or debug build
ifdef DEBUG
  ifdef RELEASE
    ifeq ($(DEBUG), 0)
      ifneq ($(RELEASE), 0)
        RELEASE = 1
      else
        $(error Cant specify both DEBUG and RELEASE)
      endif
    else ifneq ($(RELEASE), 0)
      $(error Cant specify both DEBUG and RELEASE)
    endif
  else ifeq ($(DEBUG), 0)
    RELEASE = 1
  else
    RELEASE = 0
  endif
else
  ifndef RELEASE
    DEBUG = 1
    RELEASE = 0
  else ifeq ($(RELEASE), 0)
    DEBUG = 1
  else
    DEBUG = 0
  endif
endif

# PAGE_SIZE (if defined) specifies that log2 size (i.e. number of bits) to use
# for page size.

PAGE_SIZE := 0

ifeq ($(PAGE_SIZE), 0)
  USE_PAGE_SIZE = default
  PAGE_BUILD_SUFFIX=
  MAKE_PAGE_SIZE=
else
  PAGE_BUILD_SUFFIX=/p$(PAGE_SIZE)
  USE_PAGE_SIZE = $(PAGE_SIZE)
  MAKE_PAGE_SIZE = "PAGESIZE=$(PAGE_SIZE)"
endif

WASM_INSTALL=$(PWD)/travis_deps/wasm-install
WASM_BIN=$(WASM_INSTALL)/bin
WASM_CXX=$(WASM_BIN)/emscripten/em++

WASM := 0
WASM_VANILLA := 1

ifneq ($(WASM), 0)
  ifeq ($(WASM_VANILLA), 0)
    EMSCRIPTEN_CONFIG=$(WASM_INSTALL)/../wasm_emscripten_config
    WASM_SUBDIR=/wasm
  else
    EMSCRIPTEN_CONFIG=$(WASM_INSTALL)/../wasm_emscripten_config_vanilla
    WASM_SUBDIR=/wasm-vanilla
  endif
  CXX := $(WASM_CXX)
  WASM_SYSROOT=$(WASM_INSTALL)/sysroot
  TARGET_CXXFLAGS := \
    --em-config $(EMSCRIPTEN_CONFIG) \
    --target=wasm32-unknown-unknown \
    -S --sysroot=$(WASM_INSTALL) \
    -s BINARYEN=1
  TARGET_CXXFLAGS += -DSTACK_SIZE=1044480 \
    -w -Wno-implicit-function-declaration
  EXE = .js
else
  $info(Else Using WASM=$(WASM))
endif

ifeq ($(CXX),clang++)
  CXX_SUBDIR =
else
  ifeq ($(CXX), $(WASM_CXX))
    CXX_SUBDIR =
  else
    CXX_SUBDIR = /$(CXX)
  endif
endif

PLATFORM := Default
PLATFORM_CXXFLAGS_DEFAULT = --std=c++11 -DOVERRIDE= -DFINAL=

# Define platform specific stuff.
ifeq ($(PLATFORM), Travis)
  # Add flags to handle that Travis g++ uses -std=c++0x with missing c++11 options.
  ifeq ($(CXX),g++)
    PLATFORM_CXXFLAGS += -std=c++0x -DOVERRIDE= -DFINAL=
  else
    PLATFORM_CXXFLAGS += -std=c++11 -DOVERRIDE=override -DFINAL=final
  endif
else ifeq ($(PLATFORM), Default)
  PLATFORM_CXXFLAGS += $(PLATFORM_CXXFLAGS_DEFAULT)
else
  $(error Unrecognized platform: $(PLATFORM))
endif

WABT_DIR = third_party/wabt

SRCDIR = src

BUILDBASEDIR = build$(WASM_SUBDIR)$(CXX_SUBDIR)$(PAGE_BUILD_SUFFIX)
ifeq ($(RELEASE), 0)
  BUILDDIR = $(BUILDBASEDIR)/debug
else
  BUILDDIR = $(BUILDBASEDIR)/release
endif

#BUILDDIR_BOOT = build/boot$(CXX_SUBDIR)$(PAGE_BUILD_SUFFIX)
BUILDDIR_BOOT = build/boot

GENDIR = build/src

TEST_GENDIR = build/test

SRC_GENDIR = $(GENDIR)

OBJDIR = $(BUILDDIR)/obj
OBJDIR_BOOT = $(BUILDDIR_BOOT)/obj

LIBDIR = $(BUILDDIR)/lib
LIBPREFIX = wasm-decomp-

MAKE_RELEASE = DEBUG=$(DEBUG) RELEASE=$(RELEASE)

$(info -----------------------------------------------)
$(info Using GENSRCS = $(GENSRCS))
$(info Using PLATFORM = $(PLATFORM))
$(info Using CXX = $(CXX))
$(info Using CXX_BOOT = $(CXX_BOOT))
$(info Using RELEASE = $(RELEASE))
$(info Using PAGE_SIZE = $(USE_PAGE_SIZE))
$(info Using CXX_SUBDIR = $(CXX_SUBDIR))
$(info Using WASM = $(WASM))
$(info Using BUILDDIR = $(BUILDDIR))
$(info -----------------------------------------------)