#===-- Makefile.common ---------------------------------------------------===##
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===----------------------------------------------------------------------===##

#------------------------------------------------------------------------------
# Define common parts for Parallel STL
#------------------------------------------------------------------------------

.SUFFIXES:

goals = $(or $(MAKECMDGOALS),all)
ifneq (, $(filter-out clean clean_all,$(goals)))
    ifeq (, $(filter $(backend), tbb))
        $(info Threading backend was not specified; using TBB)
        backend=tbb
    endif
endif

ifndef os_name
  # Windows sets environment variable OS; for other systems, ask uname
  ifeq ($(OS),)
    OS:=$(shell uname)
    ifeq ($(OS),)
      $(error "Cannot detect operating system")
    endif
    os_name=$(OS)
  endif

  ifeq ($(OS), Windows_NT)
    os_name=windows
  endif
  ifeq ($(OS), Linux)
    os_name=linux
  endif
  ifeq ($(OS), Darwin)
    os_name=macos
  endif
endif # !os_name

cfg ?= release
stdver ?= c++11

override INCLUDES += -I$(proj_root)/include -I$(proj_root)/test

TEST_MACRO += -D__PSTL_TEST_SUCCESSFUL_KEYWORD=1

ifeq ($(backend), tbb)
    BACKEND_MACRO += -D__PSTL_PAR_BACKEND_TBB
endif

target ?= $(os_name)
#OS specific keys
ifeq ($(target),windows)
    ifneq (, $(filter $(compiler), gcc g++))
        include $(proj_root)/build/mingw.inc
    else
        include $(proj_root)/build/windows.inc
    endif
else
    include $(proj_root)/build/unix.inc
    ifneq (,$(wildcard $(proj_root)/build/$(target).inc))
        include $(proj_root)/build/$(target).inc
        $(info included additional file $(proj_root)/build/$(target).inc)
    endif
endif

# compiler specific keys
ifneq (, $(filter $(compiler), gcc g++))
    include $(proj_root)/build/gcc.inc
endif

ifneq (, $(filter $(compiler), clang clang++))
    include $(proj_root)/build/clang.inc
endif

ifneq (, $(filter $(compiler), icc icpc icx))
    include $(proj_root)/build/icc.inc
endif

ifneq (, $(filter $(compiler), icl))
    include $(proj_root)/build/icl.inc
endif


OPTIMIZATION_ENABLED_FLAGS += $(XHOST_FLAG)
OPTIMIZATION_DISABLED_FLAGS += $(XHOST_FLAG)


ifeq ($(cfg), debug)
    TBB_LIB_NAME = tbb_debug
    BACKEND_MACRO += -DTBB_USE_DEBUG=1
    DEBUG_MACRO += -DPSTL_USE_DEBUG
    OPTIMIZATION_KEYS = $(OPTIMIZATION_DISABLED_FLAGS)
else
    OPTIMIZATION_KEYS = $(OPTIMIZATION_ENABLED_FLAGS)
endif

DYN_LDFLAGS += $(PSTL_ARCH)

CPLUS_FLAGS += $(TEST_MACRO)
CPLUS_FLAGS += $(INCLUDES)
CPLUS_FLAGS += $(BACKEND_MACRO)
CPLUS_FLAGS += $(DEBUG_MACRO)
CPLUS_FLAGS += $(CXXFLAGS)
CPLUS_FLAGS += $(OPTIMIZATION_KEYS)

CPLUS_FLAGS += $(DISABLED_WARNINGS)
CPLUS_FLAGS += $(PSTL_ARCH)