#!/bin/bash
#
#  BLIS    
#  An object-based framework for developing high-performance BLAS-like
#  libraries.
#
#  Copyright (C) 2014, The University of Texas at Austin
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are
#  met:
#   - Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#   - Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   - Neither the name of The University of Texas at Austin nor the names
#     of its contributors may be used to endorse or promote products
#     derived from this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#

#
# Makefile
#
# Field G. Van Zee
# 
# Makefile for standalone BLIS test drivers.
#

#
# --- Makefile PHONY target definitions ----------------------------------------
#

.PHONY: all bin clean \
        check-env check-env-mk check-env-fragments check-env-make-defs \
	run run-amd64 run-x86 run-arm



#
# --- Makefile initialization --------------------------------------------------
#

# Define the name of the configuration file.
CONFIG_MK_FILE     := config.mk

# Define the name of the file containing build and architecture-specific
# makefile definitions.
MAKE_DEFS_FILE     := make_defs.mk

# All makefile fragments in the tree will have this name.
FRAGMENT_MK        := .fragment.mk

# Locations of important files.
CONFIG_DIR         := config
FRAME_DIR          := frame
LIB_DIR            := lib



#
# --- Include makefile configuration file --------------------------------------
#

# Construct the path to the makefile configuration file that was generated by
# the configure script.
CONFIG_MK_PATH    := ../$(CONFIG_MK_FILE)

# Include the configuration file.
-include $(CONFIG_MK_PATH)

# Detect whether we actually got the configuration file. If we didn't, then
# it is likely that the user has not yet generated it (via configure).
ifeq ($(strip $(CONFIG_MK_INCLUDED)),yes)
CONFIG_MK_PRESENT := yes
else
CONFIG_MK_PRESENT := no
endif

# Override the DIST_PATH value obtained from config.mk, since it is relative
# to the build directory.
DIST_PATH         := ..

# Now we have access to CONFIG_NAME, which tells us which sub-directory of the
# config directory to use as our configuration.
CONFIG_PATH       := $(DIST_PATH)/$(CONFIG_DIR)/$(CONFIG_NAME)
FRAME_PATH        := $(DIST_PATH)/$(FRAME_DIR)



#
# --- Include makefile definitions file ----------------------------------------
#

# Construct the path to the makefile definitions file residing inside of
# the configuration sub-directory.
MAKE_DEFS_MK_PATH := $(CONFIG_PATH)/$(MAKE_DEFS_FILE)

# Include the makefile definitions file.
-include $(MAKE_DEFS_MK_PATH)

# Detect whether we actually got the make definitios file. If we didn't, then
# it is likely that the configuration is invalid (or incomplete).
ifeq ($(strip $(MAKE_DEFS_MK_INCLUDED)),yes)
MAKE_DEFS_MK_PRESENT := yes
else
MAKE_DEFS_MK_PRESENT := no
endif



#
# --- Include makefile fragments -----------------------------------------------
#

# Initialize our list of directory paths to makefile fragments with the empty
# list. This variable will accumulate all of the directory paths in which
# makefile fragments reside.
FRAGMENT_DIR_PATHS :=

# This variable is used by the include statements as they recursively include
# one another. For the framework source tree ('frame' directory), we initialize
# it to the top-level directory since that is its parent.
PARENT_PATH        := $(DIST_PATH)

# Recursively include all the makefile fragments in the framework itself.
-include $(addsuffix /$(FRAGMENT_MK), $(FRAME_PATH))

# Now set PARENT_PATH to $(DIST_PATH)/config in preparation to include the
# fragments in the configuration sub-directory.
PARENT_PATH        := $(DIST_PATH)/$(CONFIG_DIR)

# Recursively include all the makefile fragments in the configuration
# sub-directory.
-include $(addsuffix /$(FRAGMENT_MK), $(CONFIG_PATH))

# Create a list of the makefile fragments.
MAKEFILE_FRAGMENTS := $(addsuffix /$(FRAGMENT_MK), $(FRAGMENT_DIR_PATHS))

# Detect whether we actually got any makefile fragments. If we didn't, then it
# is likely that the user has not yet generated them (via configure).
ifeq ($(strip $(MAKEFILE_FRAGMENTS)),)
MAKEFILE_FRAGMENTS_PRESENT := no
else
MAKEFILE_FRAGMENTS_PRESENT := yes
endif



#
# --- Compiler include path definitions ----------------------------------------
#

# Expand the fragment paths that contain .h files to attain the set of header
# files present in all fragment paths.
MK_HEADER_FILES := $(foreach frag_path, $(FRAGMENT_DIR_PATHS), \
                                        $(wildcard $(frag_path)/*.h))

# Strip the leading, internal, and trailing whitespace from our list of header
# files. This makes the "make install-headers" much more readable.
MK_HEADER_FILES := $(strip $(MK_HEADER_FILES))

# Expand the fragment paths that contain .h files, and take the first
# expansion. Then, strip the header filename to leave the path to each header
# location. Notice this process even weeds out duplicates! Add the config
# directory manually since it contains FLA_config.h.
MK_HEADER_DIR_PATHS := $(dir $(foreach frag_path, $(FRAGMENT_DIR_PATHS), \
                                       $(firstword $(wildcard $(frag_path)/*.h))))

# Add -I to each header path so we can specify our include search paths to the
# C compiler.
INCLUDE_PATHS   := $(strip $(patsubst %, -I%, $(MK_HEADER_DIR_PATHS)))
CFLAGS          := $(CFLAGS) $(INCLUDE_PATHS)




#
# --- BLAS and LAPACK implementations ------------------------------------------
#

# BLIS library and header path. This is simply wherever it was installed.
#BLIS_LIB_PATH  := $(INSTALL_PREFIX)/lib
#BLIS_INC_PATH  := $(INSTALL_PREFIX)/include/blis

# BLIS library.
BLIS_LIB_PATH  := $(DIST_PATH)/$(LIB_DIR)/$(CONFIG_NAME)
BLIS_LIB       := $(BLIS_LIB_PATH)/libblis.a

# BLAS library path(s). This is where the BLAS libraries reside.
#BLAS_LIB_PATH  := $(HOME)/flame/lib

# OpenBLAS, ATLAS, and MKL libraries.
#BLAS_LIB       := $(LIB_PATH)/libblas.a
#BLAS_LIB       := $(LIB_PATH)/libgoto.a
#BLAS_LIB       := $(LIB_PATH)/libgoto2.a
#OPENBLAS_LIB   := $(BLAS_LIB_PATH)/libopenblas.a
#ATLAS_LIB      := $(BLAS_LIB_PATH)/libf77blas.a \
#                  $(BLAS_LIB_PATH)/libatlas.a
#MKL_LIB        := -L/opt/intel/mkl/10.2.2.025/lib/em64t/ \
#                  -lmkl_sequential -lmkl_core -lmkl_intel_lp64



#
# --- Optional overrides -------------------------------------------------------
#

# Uncomment and modify these definitions if you wish to override the values
# present in the current BLIS configuration's makefile definitions file
# (ie: config/<configname>/make_defs.mk).
# CC             := gcc
# LINKER         := $(CC)
# CFLAGS         := -g -O2 -Wall -Wno-comment
# LDFLAGS        := 
# INSTALL_PREFIX := $(HOME)/blis



#
# --- General build definitions ------------------------------------------------
#

TEST_SRC_PATH  := src
TEST_OBJ_PATH  := obj

# Gather all local object files.
TEST_OBJS      := $(patsubst $(TEST_SRC_PATH)/%.c, \
                             $(TEST_OBJ_PATH)/%.o, \
                             $(wildcard $(TEST_SRC_PATH)/*.c))

ifeq ($(CONFIG_NAME),pnacl)
# Linked executable
TEST_BIN       := test_libblis.unstable.pexe
# Finalized executable
TEST_BIN_PNACL := test_libblis.pexe
# Translated executable for x86-64
TEST_BIN_AMD64 := test_libblis.x86-64.nexe
# Translated executable for x86
TEST_BIN_X86   := test_libblis.x86.nexe
# Translated executable for ARM
TEST_BIN_ARM   := test_libblis.arm.nexe
else
# Binary executable name.
TEST_BIN       := test_libblis.x
endif

# Add installed and local header paths to CFLAGS
CFLAGS         += -I$(BLIS_INC_PATH) -I$(TEST_SRC_PATH)



#
# --- Targets/rules ------------------------------------------------------------
#

# --- Primary targets ---

all: check-env bin

ifeq ($(CONFIG_NAME),pnacl)
bin: check-env $(TEST_BIN) $(TEST_BIN_PNACL) $(TEST_BIN_AMD64) $(TEST_BIN_X86) $(TEST_BIN_ARM)
else
bin: check-env $(TEST_BIN)
endif


# --- Environment check rules ---

check-env: check-env-make-defs check-env-fragments check-env-mk

check-env-mk:
ifeq ($(CONFIG_MK_PRESENT),no)
    $(error Cannot proceed: config.mk not detected! Run configure first)
endif

check-env-fragments: check-env-mk
ifeq ($(MAKEFILE_FRAGMENTS_PRESENT),no)
    $(error Cannot proceed: makefile fragments not detected! Run configure first)
endif

check-env-make-defs: check-env-fragments
ifeq ($(MAKE_DEFS_MK_PRESENT),no)
    $(error Cannot proceed: make_defs.mk not detected! Invalid configuration)
endif


# --Object file rules --

$(TEST_OBJ_PATH)/%.o: $(TEST_SRC_PATH)/%.c $(BLIS_LIB)
ifeq ($(BLIS_ENABLE_VERBOSE_MAKE_OUTPUT),yes)
	$(CC) $(CFLAGS) -c $< -o $@
else
	@echo "Compiling $<"
	@$(CC) $(CFLAGS) -c $< -o $@
endif


# -- Executable file rules --

$(TEST_BIN): $(TEST_OBJS) $(BLIS_LIB)
ifeq ($(BLIS_ENABLE_VERBOSE_MAKE_OUTPUT),yes)
	$(LINKER) $(TEST_OBJS) $(BLIS_LIB) $(LDFLAGS) -o $@
else
	@echo "Linking $@ against '$(BLIS_LIB) $(LDFLAGS)'"
	@$(LINKER) $(TEST_OBJS) $(BLIS_LIB) $(LDFLAGS) -o $@
endif

ifeq ($(CONFIG_NAME),pnacl)

# Finalize PNaCl executable (i.e. convert from LLVM bitcode to PNaCl bitcode)
$(TEST_BIN_PNACL): $(TEST_BIN)
ifeq ($(BLIS_ENABLE_VERBOSE_MAKE_OUTPUT),yes)
	$(FINALIZER) $(FINFLAGS) -o $@ $(TEST_BIN)
else
	@echo "Finalizing $@"
	@$(FINALIZER) $(FINFLAGS) -o $@ $(TEST_BIN)
endif

# Translate PNaCl executable to x86-64 NaCl executable
$(TEST_BIN_AMD64): $(TEST_BIN_PNACL)
ifeq ($(BLIS_ENABLE_VERBOSE_MAKE_OUTPUT),yes)
	$(TRANSLATOR) $(TRNSFLAGS) $(TRNSAMD64FLAGS) $< -o $@
else
	@echo "Translating $< -> $@"
	@$(TRANSLATOR) $(TRNSFLAGS) $(TRNSAMD64FLAGS) $< -o $@
endif


# Translate PNaCl executable to x86 NaCl executable
$(TEST_BIN_X86): $(TEST_BIN_PNACL)
ifeq ($(BLIS_ENABLE_VERBOSE_MAKE_OUTPUT),yes)
	$(TRANSLATOR) $(TRNSFLAGS) $(TRNSX86FLAGS) $< -o $@
else
	@echo "Translating $< -> $@"
	@$(TRANSLATOR) $(TRNSFLAGS) $(TRNSX86FLAGS) $< -o $@
endif

# Translate PNaCl executable to ARMv7 NaCl executable
$(TEST_BIN_ARM): $(TEST_BIN_PNACL)
ifeq ($(BLIS_ENABLE_VERBOSE_MAKE_OUTPUT),yes)
	$(TRANSLATOR) $(TRNSFLAGS) $(TRNSARMFLAGS) $< -o $@
else
	@echo "Translating $< -> $@"
	@$(TRANSLATOR) $(TRNSFLAGS) $(TRNSARMFLAGS) $< -o $@
endif

endif

# -- Test run rules --

ifeq ($(CONFIG_NAME),pnacl)
run-amd64: $(TEST_BIN_AMD64)
	$(NACL_SDK_ROOT)/tools/sel_ldr_x86_64 -a -c -q -B $(NACL_SDK_ROOT)/tools/irt_core_x86_64.nexe -- $(TEST_BIN_AMD64)
run-x86: $(TEST_BIN_X86)
	$(NACL_SDK_ROOT)/tools/sel_ldr_x86_32 -a -c -q -B $(NACL_SDK_ROOT)/tools/irt_core_x86_32.nexe -- $(TEST_BIN_X86)
run-arm: $(TEST_BIN_ARM)
	$(NACL_SDK_ROOT)/tools/sel_ldr_arm -a -c -q -B $(NACL_SDK_ROOT)/tools/irt_core_arm.nexe -- $(TEST_BIN_ARM)
else
run: $(TEST_BIN)
	./$(TEST_BIN)
endif

# -- Clean rules --

ifeq ($(CONFIG_NAME),pnacl)
clean:
	- $(RM_F) $(TEST_OBJS) $(TEST_BIN) $(TEST_BIN_PNACL) $(TEST_BIN_AMD64) $(TEST_BIN_X86) $(TEST_BIN_ARM)
else
clean:
	- $(RM_F) $(TEST_OBJS) $(TEST_BIN)
endif