# Makefile for uClibc
#
# Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org>
#
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
# The routines included in this math library are derived from the
# math library for Apple's MacOS X/Darwin math library, which was
# itself swiped from FreeBSD.  The original copyright information
# is as follows:
#
#     Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
#
#     Developed at SunPro, a Sun Microsystems, Inc. business.
#     Permission to use, copy, modify, and distribute this
#     software is freely granted, provided that this notice
#     is preserved.
#
# It has been ported to work with uClibc and generally behave
# by Erik Andersen <andersen@codepoet.org>
#

subdirs += libm libm/$(TARGET_ARCH)

CFLAGS-libm := -DNOT_IN_libc -DIS_IN_libm $(SSP_ALL_CFLAGS)

libm_DIR:=$(top_srcdir)libm
libm_OUT:=$(top_builddir)libm

libm_ARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)
libm_ARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)

ifneq ($(TARGET_SUBARCH),)
libm_SUBARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
libm_SUBARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
endif

ifeq ($(UCLIBC_HAS_FPU),y)
ifeq ($(DO_C99_MATH),y)
-include $(libm_ARCH_DIR)/Makefile.arch
-include $(libm_SUBARCH_DIR)/Makefile.arch
endif
endif

FL_MSRC := float_wrappers.c
LD_MSRC := ldouble_wrappers.c

ifeq ($(DO_C99_MATH),y)
libm_CSRC := \
	e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
	e_exp.c e_exp10.c e_fmod.c e_hypot.c \
	e_lgamma_r.c e_log.c e_log2.c e_log10.c \
	e_pow.c e_remainder.c e_rem_pio2.c e_scalb.c e_sinh.c \
	e_sqrt.c k_cos.c k_rem_pio2.c k_sin.c k_tan.c \
	s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
	s_erf.c s_expm1.c s_fabs.c s_finite.c s_floor.c s_frexp.c \
	s_ilogb.c s_ldexp.c s_lib_version.c s_lrint.c s_lround.c s_llround.c \
	s_log1p.c s_logb.c s_modf.c s_nextafter.c \
	s_nextafterf.c s_round.c \
	s_rint.c s_scalbn.c s_signgam.c s_significand.c s_sin.c s_tan.c \
	s_tanh.c s_trunc.c \
	w_cabs.c \
	nan.c carg.c s_llrint.c \
	s_fpclassify.c s_fpclassifyf.c s_signbit.c s_signbitf.c \
	s_isnan.c s_isnanf.c s_isinf.c s_isinff.c s_finitef.c \
	s_fdim.c s_fma.c s_fmax.c s_fmin.c \
	s_remquo.c \
	cexp.c sincos.c	\
	w_acos.c w_acosf.c w_acosl.c \
	w_asin.c w_asinf.c w_asinl.c \
	w_atan2.c w_atan2f.c w_atan2l.c \
	w_hypot.c w_hypotf.c w_hypotl.c \
	w_cosh.c w_coshf.c w_coshl.c \
	w_exp.c w_expf.c w_expl.c \
	w_exp2.c w_exp2f.c w_exp2l.c \
	w_exp10.c w_exp10f.c w_exp10l.c \
	w_lgamma_r.c w_lgammaf_r.c w_lgammal_r.c \
	w_lgamma.c w_lgammaf.c w_lgammal.c \
	w_tgamma.c w_tgammaf.c w_tgammal.c \
	w_log.c w_logf.c w_logl.c \
	w_log2.c w_log2f.c w_log2l.c \
	w_log10.c w_log10f.c w_log10l.c \
	w_pow.c w_powf.c w_powl.c \
	w_sinh.c w_sinhf.c w_sinhl.c \
	w_fmod.c w_fmodf.c w_fmodl.c \
	w_sqrt.c w_sqrtf.c w_sqrtl.c \
	w_remainder.c w_remainderf.c w_remainderl.c \
	w_acosh.c w_acoshf.c w_acoshl.c \
	w_atanh.c w_atanhf.c w_atanhl.c \
	w_scalb.c w_scalbf.c w_scalbl.c 

ifeq ($(UCLIBC_HAS_FENV),y)
	libm_CSRC += k_standard.c k_standardf.c k_standardl.c
endif

FL_MOBJ := \
	acosf.o \
	acoshf.o \
	asinf.o \
	asinhf.o \
	atan2f.o \
	atanf.o \
	atanhf.o \
	cargf.o \
	cbrtf.o \
	ceilf.o \
	copysignf.o \
	cosf.o \
	coshf.o \
	erfcf.o \
	erff.o \
	exp2f.o \
	expf.o \
	expm1f.o \
	fabsf.o \
	fdimf.o \
	floorf.o \
	fmaf.o \
	fmaxf.o \
	fminf.o \
	fmodf.o \
	frexpf.o \
	gammaf.o \
	hypotf.o \
	ilogbf.o \
	ldexpf.o \
	lgammaf.o \
	llrintf.o \
	llroundf.o \
	log10f.o \
	log1pf.o \
	log2f.o \
	logbf.o \
	logf.o \
	lrintf.o \
	lroundf.o \
	modff.o \
	nearbyintf.o \
	nexttowardf.o \
	powf.o \
	remainderf.o \
	remquof.o \
	rintf.o \
	roundf.o \
	scalblnf.o \
	scalbnf.o \
	significandf.o \
	sinf.o \
	sinhf.o \
	sqrtf.o \
	tanf.o \
	tanhf.o \
	tgammaf.o \
	truncf.o \

ifeq ($(UCLIBC_SUSV3_LEGACY),y)
FL_MOBJ += scalbf.o
endif

# Do not (yet?) implement the float variants of bessel functions
ifeq (not-yet-implemented-$(DO_XSI_MATH),y)
FL_MOBJ += \
	j0f.o \
	j1f.o \
	jnf.o \
	y0f.o \
	y1f.o \
	ynf.o
endif

LD_MOBJ := \
	__finitel.o \
	__fpclassifyl.o \
	__isinfl.o \
	__isnanl.o \
	__signbitl.o \
	acoshl.o \
	acosl.o \
	asinhl.o \
	asinl.o \
	atan2l.o \
	atanhl.o \
	atanl.o \
	cargl.o \
	cbrtl.o \
	ceill.o \
	copysignl.o \
	coshl.o \
	cosl.o \
	erfcl.o \
	erfl.o \
	exp2l.o \
	expl.o \
	expm1l.o \
	fabsl.o \
	fdiml.o \
	floorl.o \
	fmal.o \
	fmaxl.o \
	fminl.o \
	fmodl.o \
	frexpl.o \
	gammal.o \
	hypotl.o \
	ilogbl.o \
	ldexpl.o \
	lgammal.o \
	llrintl.o \
	llroundl.o \
	log10l.o \
	log1pl.o \
	log2l.o \
	logbl.o \
	logl.o \
	lrintl.o \
	lroundl.o \
	modfl.o \
	nearbyintl.o \
	nextafterl.o \
	nexttowardl.o \
	powl.o \
	remainderl.o \
	remquol.o \
	rintl.o \
	roundl.o \
	scalblnl.o \
	scalbnl.o \
	significandl.o \
	sinhl.o \
	sinl.o \
	sqrtl.o \
	tanhl.o \
	tanl.o \
	tgammal.o \
	truncl.o \

# Do not (yet?) implement the long double variants of bessel functions
ifeq (not-yet-implemented-$(DO_XSI_MATH),y)
LD_MOBJ += \
	j0l.o \
	j1l.o \
	jnl.o \
	y0l.o \
	y1l.o \
	ynl.o
endif

else

# This list of math functions was taken from POSIX/IEEE 1003.1b-1993
libm_CSRC := \
	s_atan.c s_ceil.c s_cos.c \
	s_fabs.c s_floor.c s_frexp.c \
	s_ldexp.c s_modf.c s_sin.c \
	s_tan.c s_tanh.c \
	s_expm1.c s_scalbn.c s_copysign.c e_acos.c e_asin.c e_atan2.c \
	k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log10.c e_pow.c \
	k_sin.c e_sinh.c e_sqrt.c k_tan.c e_rem_pio2.c k_rem_pio2.c \
	s_finite.c e_exp10.c 	\
	matherr_wrapers.c k_standart.c 

# We'll add sqrtf to avoid problems with libstdc++
FL_MOBJ := sqrtf.o
endif

ifeq ($(DO_XSI_MATH),y)
libm_CSRC += \
	e_j0.c e_j1.c e_jn.c \
	w_j0.c w_j0f.c w_j0l.c \
	w_j1.c w_j1f.c w_j1l.c \
	w_jn.c w_jnf.c w_jnl.c
endif

# assume that arch specific versions are provided as single sources/objects
ifeq ($(UCLIBC_HAS_FPU),y)
ifeq ($(DO_C99_MATH),y)
ifneq ($(strip $(libm_ARCH_OBJS)),)

# remove generic sources, if arch specific version is present
ifneq ($(strip $(libm_ARCH_SRC)),)
libm_CSRC := $(filter-out $(notdir $(libm_ARCH_SRC)),$(libm_CSRC))
endif

# remove generic objects built from multi-sources, if arch specific version is present
FL_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(FL_MOBJ))
LD_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(LD_MOBJ))

# we also try to remove % if s_% is in arch specific subdir
FL_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(FL_MOBJ))
LD_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(LD_MOBJ))
endif
endif
endif

libm_SRC := $(patsubst %.c,$(libm_DIR)/%.c,$(libm_CSRC))
libm_OBJ := $(patsubst $(libm_DIR)/%.c,$(libm_OUT)/%.o,$(libm_SRC))

ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
libm_MSRC_LD := $(libm_DIR)/$(LD_MSRC)
libm_MOBJ_LD := $(patsubst %.o,$(libm_OUT)/%.o,$(LD_MOBJ))
endif
libm_MSRC_FL := $(libm_DIR)/$(FL_MSRC)
libm_MOBJ_FL := $(patsubst %.o,$(libm_OUT)/%.o,$(FL_MOBJ))

libm_OBJS := $(libm_OBJ) $(libm_MOBJ_FL) $(libm_MOBJ_LD)

ifeq ($(DOPIC),y)
libm-a-y += $(libm_OBJS:.o=.os)
else
libm-a-y += $(libm_OBJS)
endif
libm-so-y += $(libm_OBJS:.o=.os)

objclean-y += CLEAN_libm

$(libm_OUT)/libm.oS: $(libm_SRC) $(libm_MSRC_FL) $(libm_MSRC_LD) $(libm_ARCH_SRC)
	$(Q)$(RM) $@
	$(compile-m)

$(libm_MOBJ_FL): $(libm_MSRC_FL)
	$(compile.m)

$(libm_MOBJ_LD): $(libm_MSRC_LD)
	$(compile.m)

$(libm_MOBJ_FL:.o=.os): $(libm_MSRC_FL)
	$(compile.m)

$(libm_MOBJ_LD:.o=.os): $(libm_MSRC_LD)
	$(compile.m)

# spare us from adding a gazillion dummy two-liner files
$(libm_MOBJ_FL:.o=.i): $(libm_MSRC_FL)
	$(compile.mi)

$(libm_MOBJ_LD:.o=.i): $(libm_MSRC_LD)
	$(compile.mi)

CLEAN_libm:
	$(do_rm) $(addprefix $(libm_OUT)/,$(foreach e, o os oS a,$(foreach d, *. */*. */*/*.,$(d)$(e))))