Makefile

#=============================================================================
#
# This Makefile is part of the SoftFloat IEEE Floating-Point Arithmetic
# Package, Release 3e, by John R. Hauser.
#
# Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
# University of California.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#  1. Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#
#  2. 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.
#
#  3. Neither the name of the University 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 REGENTS 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 REGENTS 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.
#
#=============================================================================

$(info >>> L-SoftFloat <<< T=$(TOP) D=$(DSTPATH) I=$(INCPATH) CF=$(CFLAGS) A=$(CCARCH))
$(info >   optional CC=$(CC) TCH=$(TOOLCHAIN) AR=$(AR))


PWD:=$(shell pwd)

DST_DIR?=./
DST_LIB?=libsf.a

#SOURCE_DIR ?= ../../source
SOURCE_DIR ?= $(PWD)/../../source
SPECIALIZE_TYPE ?= NOELV

#SOFTFLOAT_OPTS ?= -DSOFTFLOAT_ROUND_ODD

DELETE = rm -f

TCOPT?=
TCFPU?=
TCFLAGS?=

# the library is always compiled as soft-float version
#LIBCFLAGS+=-target $(TOOLCHAIN) -Wa,--has-fhalf -msoft-float
LIBCFLAGS=$(CCARCH) $(CFLAGS)

ifeq ($(TOOL),llvm)
ifeq ($(TOOLCHAIN),)
  TOOLCHAIN=riscv64-daiteq-elf
endif
ifeq ($(CC),)
  CC=clang
endif
  LIBCFLAGS+=-target $(TOOLCHAIN)
  #-mcpu=leon2
  # TODO: asm options according to selected type of FPU
endif

ifeq ($(TOOL),gcc)
ifeq ($(TOOLCHAIN),)
  TOOLCHAIN=riscv-gaisler-elf
endif
ifeq ($(CC),)
  CC=$(TOOLCHAIN)-gcc
endif
  LIBCFLAGS+=-mcpu=leon -qbsp=leon2 -mfix-at697f
#  LIBCFLAGS+=-Xassembler --has-fhalf -Xassembler --has-fpack -Xassembler -Aleon
endif

LIBCFLAGS+=-ffunction-sections -fdata-sections
#FPUTYPE=-daiteq-fpu-type=$(FPUCFG)

ifeq ($(AR),)
  AR=$(TOOLCHAIN)-ar
endif


C_INCLUDES = -I. -I$(SOURCE_DIR)/$(SPECIALIZE_TYPE) -I$(SOURCE_DIR)/include

COMPILE_C = \
	$(CC) $(LIBCFLAGS) $(INCDIRS) $(C_INCLUDES) $(TCFPU) $(TCOPT) $(TCFLAGS) \
    $(DEFS) $(SOFTFLOAT_OPTS) -c -o $@

OBJEXT = .o

OTHER_HEADERS =

.PHONY: all
all: $(DST_DIR) $(DST_DIR)$(DST_LIB)
	@echo "Library is ready."

$(DST_DIR):
	@mkdir -p $@

$(DST_DIR)$(DST_LIB): $(OBJS_ALL)
	@$(TOOLCHAIN)-ar crs $@ $^


OBJS_PRIMITIVES = \
  s_shortShiftLeft64To96M$(OBJEXT) \
  s_shortShiftLeftM$(OBJEXT) \
  s_shiftLeftM$(OBJEXT) \
  s_shortShiftRightM$(OBJEXT) \
  s_shortShiftRightJam64$(OBJEXT) \
  s_shortShiftRightJamM$(OBJEXT) \
  s_shiftRightJam32$(OBJEXT) \
  s_shiftRightJam64$(OBJEXT) \
  s_shiftRightJamM$(OBJEXT) \
  s_shiftRightM$(OBJEXT) \
  s_countLeadingZeros8$(OBJEXT) \
  s_countLeadingZeros16$(OBJEXT) \
  s_countLeadingZeros32$(OBJEXT) \
  s_countLeadingZeros64$(OBJEXT) \
  s_addM$(OBJEXT) \
  s_addCarryM$(OBJEXT) \
  s_addComplCarryM$(OBJEXT) \
  s_negXM$(OBJEXT) \
  s_sub1XM$(OBJEXT) \
  s_subM$(OBJEXT) \
  s_mul64To128M$(OBJEXT) \
  s_approxRecip_1Ks$(OBJEXT) \
  s_approxRecip32_1$(OBJEXT) \
  s_approxRecipSqrt_1Ks$(OBJEXT) \
  s_approxRecipSqrt32_1$(OBJEXT) \
  s_remStepMBy32$(OBJEXT)

OBJS_SPECIALIZE = \
  softfloat_raiseFlags$(OBJEXT) \
  s_f16UIToCommonNaN$(OBJEXT) \
  s_commonNaNToF16UI$(OBJEXT) \
  s_propagateNaNF16UI$(OBJEXT) \
  s_f32UIToCommonNaN$(OBJEXT) \
  s_commonNaNToF32UI$(OBJEXT) \
  s_propagateNaNF32UI$(OBJEXT) \
  s_f64UIToCommonNaN$(OBJEXT) \
  s_commonNaNToF64UI$(OBJEXT) \
  s_propagateNaNF64UI$(OBJEXT)
#  llvm_wrapper$(OBJEXT)

OBJS_OTHERS = \
  s_roundToUI32$(OBJEXT) \
  s_roundMToUI64$(OBJEXT) \
  s_roundToI32$(OBJEXT) \
  s_roundMToI64$(OBJEXT) \
  s_normSubnormalF16Sig$(OBJEXT) \
  s_roundPackToF16$(OBJEXT) \
  s_normRoundPackToF16$(OBJEXT) \
  s_addMagsF16$(OBJEXT) \
  s_subMagsF16$(OBJEXT) \
  s_mulAddF16$(OBJEXT) \
  s_normSubnormalF32Sig$(OBJEXT) \
  s_roundPackToF32$(OBJEXT) \
  s_normRoundPackToF32$(OBJEXT) \
  s_addMagsF32$(OBJEXT) \
  s_subMagsF32$(OBJEXT) \
  s_mulAddF32$(OBJEXT) \
  s_normSubnormalF64Sig$(OBJEXT) \
  s_roundPackToF64$(OBJEXT) \
  s_normRoundPackToF64$(OBJEXT) \
  s_addMagsF64$(OBJEXT) \
  s_subMagsF64$(OBJEXT) \
  s_mulAddF64$(OBJEXT) \
  softfloat_state$(OBJEXT) \
  ui32_to_f16$(OBJEXT) \
  ui32_to_f32$(OBJEXT) \
  ui32_to_f64$(OBJEXT) \
  ui64_to_f16$(OBJEXT) \
  ui64_to_f32$(OBJEXT) \
  ui64_to_f64$(OBJEXT) \
  i32_to_f16$(OBJEXT) \
  i32_to_f32$(OBJEXT) \
  i32_to_f64$(OBJEXT) \
  i64_to_f16$(OBJEXT) \
  i64_to_f32$(OBJEXT) \
  i64_to_f64$(OBJEXT) \
  f16_to_ui32$(OBJEXT) \
  f16_to_ui64$(OBJEXT) \
  f16_to_i32$(OBJEXT) \
  f16_to_i64$(OBJEXT) \
  f16_to_ui32_r_minMag$(OBJEXT) \
  f16_to_ui64_r_minMag$(OBJEXT) \
  f16_to_i32_r_minMag$(OBJEXT) \
  f16_to_i64_r_minMag$(OBJEXT) \
  f16_to_f32$(OBJEXT) \
  f16_to_f64$(OBJEXT) \
  f16_roundToInt$(OBJEXT) \
  f16_add$(OBJEXT) \
  f16_sub$(OBJEXT) \
  f16_mul$(OBJEXT) \
  f16_mulAdd$(OBJEXT) \
  f16_div$(OBJEXT) \
  f16_rem$(OBJEXT) \
  f16_sqrt$(OBJEXT) \
  f16_eq$(OBJEXT) \
  f16_le$(OBJEXT) \
  f16_lt$(OBJEXT) \
  f16_eq_signaling$(OBJEXT) \
  f16_le_quiet$(OBJEXT) \
  f16_lt_quiet$(OBJEXT) \
  f16_isSignalingNaN$(OBJEXT) \
  f32_to_ui32$(OBJEXT) \
  f32_to_ui64$(OBJEXT) \
  f32_to_i32$(OBJEXT) \
  f32_to_i64$(OBJEXT) \
  f32_to_ui32_r_minMag$(OBJEXT) \
  f32_to_ui64_r_minMag$(OBJEXT) \
  f32_to_i32_r_minMag$(OBJEXT) \
  f32_to_i64_r_minMag$(OBJEXT) \
  f32_to_f16$(OBJEXT) \
  f32_to_f64$(OBJEXT) \
  f32_roundToInt$(OBJEXT) \
  f32_add$(OBJEXT) \
  f32_sub$(OBJEXT) \
  f32_mul$(OBJEXT) \
  f32_mulAdd$(OBJEXT) \
  f32_div$(OBJEXT) \
  f32_rem$(OBJEXT) \
  f32_sqrt$(OBJEXT) \
  f32_eq$(OBJEXT) \
  f32_le$(OBJEXT) \
  f32_lt$(OBJEXT) \
  f32_eq_signaling$(OBJEXT) \
  f32_le_quiet$(OBJEXT) \
  f32_lt_quiet$(OBJEXT) \
  f32_isSignalingNaN$(OBJEXT) \
  f64_to_ui32$(OBJEXT) \
  f64_to_ui64$(OBJEXT) \
  f64_to_i32$(OBJEXT) \
  f64_to_i64$(OBJEXT) \
  f64_to_ui32_r_minMag$(OBJEXT) \
  f64_to_ui64_r_minMag$(OBJEXT) \
  f64_to_i32_r_minMag$(OBJEXT) \
  f64_to_i64_r_minMag$(OBJEXT) \
  f64_to_f16$(OBJEXT) \
  f64_to_f32$(OBJEXT) \
  f64_roundToInt$(OBJEXT) \
  f64_add$(OBJEXT) \
  f64_sub$(OBJEXT) \
  f64_mul$(OBJEXT) \
  f64_mulAdd$(OBJEXT) \
  f64_div$(OBJEXT) \
  f64_rem$(OBJEXT) \
  f64_sqrt$(OBJEXT) \
  f64_eq$(OBJEXT) \
  f64_le$(OBJEXT) \
  f64_lt$(OBJEXT) \
  f64_eq_signaling$(OBJEXT) \
  f64_le_quiet$(OBJEXT) \
  f64_lt_quiet$(OBJEXT) \
  f64_isSignalingNaN$(OBJEXT)

DST_OBJS_PRIMITIVES=$(OBJS_PRIMITIVES:%=$(DST_DIR)%)
DST_OBJS_SPECIALIZE=$(OBJS_SPECIALIZE:%=$(DST_DIR)%)
DST_OBJS_OTHERS=$(OBJS_OTHERS:%=$(DST_DIR)%)

OBJS_ALL = $(DST_OBJS_PRIMITIVES) $(DST_OBJS_SPECIALIZE) $(DST_OBJS_OTHERS)


EXPHDRS=softfloat.h softfloat_types.h

$(OBJS_ALL): \
  $(OTHER_HEADERS) platform.h $(SOURCE_DIR)/include/primitiveTypes.h \
  $(SOURCE_DIR)/include/primitives.h
$(DST_OBJS_PRIMITIVES) $(DST_OBJS_OTHERS): \
  $(SOURCE_DIR)/include/softfloat_types.h $(SOURCE_DIR)/include/internals.h \
  $(SOURCE_DIR)/$(SPECIALIZE_TYPE)/specialize.h \
  $(SOURCE_DIR)/include/softfloat.h

$(DST_OBJS_PRIMITIVES) $(DST_OBJS_OTHERS): $(DST_DIR)%$(OBJEXT): $(SOURCE_DIR)/%.c
	$(COMPILE_C) $(SOURCE_DIR)/$*.c

$(DST_OBJS_SPECIALIZE): $(DST_DIR)%$(OBJEXT): $(SOURCE_DIR)/$(SPECIALIZE_TYPE)/%.c
	$(COMPILE_C) $(SOURCE_DIR)/$(SPECIALIZE_TYPE)/$*.c


.PHONY: clean export
clean:
	$(DELETE) $(OBJS_ALL) $(DST_DIR)$(DST_LIB)

export: $(DSTPATH) $(DSTPATH)/$(DST_LIB) $(EXPHDRS:%=$(INCPATH)/%)
	@echo "Library is exported"


$(DSTPATH)/$(DST_LIB): $(OBJS_PRIMITIVES:%=$(DSTPATH)/%) $(OBJS_SPECIALIZE:%=$(DSTPATH)/%) $(DST_OBJS_OTHERS:%=$(DSTPATH)/%)
	@$(TOOLCHAIN)-ar crs $@ $^


$(DSTPATH)/%$(OBJEXT): $(DST_DIR)%$(OBJEXT)
	@mv $< $@


$(INCPATH)/%: $(SOURCE_DIR)/include/%
	ln -sf $< $@