3 # Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org>
5 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
7 # The routines included in this math library are derived from the
8 # math library for Apple's MacOS X/Darwin math library, which was
9 # itself swiped from FreeBSD. The original copyright information
12 # Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
14 # Developed at SunPro, a Sun Microsystems, Inc. business.
15 # Permission to use, copy, modify, and distribute this
16 # software is freely granted, provided that this notice
19 # It has been ported to work with uClibc and generally behave
20 # by Erik Andersen <andersen@codepoet.org>
23 subdirs += libm libm/$(TARGET_ARCH)
25 CFLAGS-libm := -DNOT_IN_libc -DIS_IN_libm $(SSP_ALL_CFLAGS)
26 CFLAGS-libm += -D_IEEE_LIBM
28 LDFLAGS-$(UCLIBC_FORMAT_DSBT_ELF)-libm.so := -Wl,--dsbt-index=5
29 LDFLAGS-libm.so := $(LDFLAGS)
31 LIBS-libm.so := $(LIBS)
33 libm_FULL_NAME := libm-$(VERSION).so
35 libm_DIR:=$(top_srcdir)libm
36 libm_OUT:=$(top_builddir)libm
38 libm_ARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)
39 libm_ARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)
41 ifneq ($(TARGET_SUBARCH),)
42 libm_SUBARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
43 libm_SUBARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
46 ifeq ($(UCLIBC_HAS_FPU),y)
47 ifeq ($(DO_C99_MATH),y)
48 -include $(libm_ARCH_DIR)/Makefile.arch
49 -include $(libm_SUBARCH_DIR)/Makefile.arch
53 FL_MSRC := float_wrappers.c
54 LD_MSRC := ldouble_wrappers.c
56 ifeq ($(DO_C99_MATH),y)
58 e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
59 e_exp.c e_fmod.c e_hypot.c \
60 e_lgamma_r.c e_log.c e_log2.c e_log10.c \
61 e_pow.c e_remainder.c e_rem_pio2.c e_scalb.c e_sinh.c \
62 e_sqrt.c k_cos.c k_rem_pio2.c k_sin.c k_standard.c k_tan.c \
63 s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
64 s_erf.c s_expm1.c s_fabs.c s_finite.c s_floor.c s_frexp.c \
65 s_ilogb.c s_ldexp.c s_lib_version.c s_lrint.c s_lround.c s_llround.c \
66 s_log1p.c s_logb.c s_matherr.c s_modf.c s_nextafter.c \
67 s_nextafterf.c s_round.c \
68 s_rint.c s_scalbn.c s_signgam.c s_significand.c s_sin.c s_tan.c \
71 nan.c carg.c s_llrint.c \
72 s_fpclassify.c s_fpclassifyf.c s_signbit.c s_signbitf.c \
73 s_isnan.c s_isnanf.c s_isinf.c s_isinff.c s_finitef.c \
74 s_fdim.c s_fma.c s_fmax.c s_fmin.c \
77 # Not implemented [yet?], see comment in float_wrappers.c:
78 # fdimf.o fmaf.o fmaxf.o fminf.o
79 # nearbyintf.o remquof.o scalblnf.o tgammaf.o
132 # Not implemented [yet?]: nexttowardl.o
200 # This list of math functions was taken from POSIX/IEEE 1003.1b-1993
202 s_atan.c s_ceil.c s_cos.c \
203 s_fabs.c s_floor.c s_frexp.c \
204 s_ldexp.c s_modf.c s_sin.c \
206 s_expm1.c s_scalbn.c s_copysign.c e_acos.c e_asin.c e_atan2.c \
207 k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log10.c e_pow.c \
208 k_sin.c e_sinh.c e_sqrt.c k_tan.c e_rem_pio2.c k_rem_pio2.c \
210 # We'll add sqrtf to avoid problems with libstdc++
214 ifeq ($(DO_XSI_MATH),y)
215 libm_CSRC += e_j0.c e_j1.c e_jn.c
218 # assume that arch specific versions are provided as single sources/objects
219 ifeq ($(UCLIBC_HAS_FPU),y)
220 ifeq ($(DO_C99_MATH),y)
221 ifneq ($(strip $(libm_ARCH_OBJS)),)
222 CFLAGS-libm/$(TARGET_ARCH)/ := $(CFLAGS-libm)
223 CFLAGS-libm/$(TARGET_ARCH)/$(TARGET_SUBARCH)/ := $(CFLAGS-libm)
225 # remove generic sources, if arch specific version is present
226 ifneq ($(strip $(libm_ARCH_SRC)),)
227 libm_CSRC := $(filter-out $(notdir $(libm_ARCH_SRC)),$(libm_CSRC))
230 # remove generic objects built from multi-sources, if arch specific version is present
231 FL_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(FL_MOBJ))
232 LD_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(LD_MOBJ))
234 # we also try to remove % if s_% is in arch specific subdir
235 FL_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(FL_MOBJ))
236 LD_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(LD_MOBJ))
241 libm_SRC := $(patsubst %.c,$(libm_DIR)/%.c,$(libm_CSRC))
242 libm_OBJ := $(patsubst $(libm_DIR)/%.c,$(libm_OUT)/%.o,$(libm_SRC))
244 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
245 libm_MSRC_LD := $(libm_DIR)/$(LD_MSRC)
246 libm_MOBJ_LD := $(patsubst %.o,$(libm_OUT)/%.o,$(LD_MOBJ))
248 libm_MSRC_FL := $(libm_DIR)/$(FL_MSRC)
249 libm_MOBJ_FL := $(patsubst %.o,$(libm_OUT)/%.o,$(FL_MOBJ))
253 CFLAGS-libm += $(patsubst %,-DL_%,$(subst .o,,$(notdir $(libm_MOBJ_FL))))
254 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
255 CFLAGS-libm += $(patsubst %,-DL_%,$(subst .o,,$(notdir $(libm_MOBJ_LD))))
259 libm_OBJS := $(libm_OBJ) $(libm_MOBJ_FL) $(libm_MOBJ_LD)
262 libm-a-y += $(libm_OBJS:.o=.os)
264 libm-a-y += $(libm_OBJS)
266 libm-so-y += $(libm_OBJS:.o=.os)
268 lib-a-$(UCLIBC_HAS_FLOATS) += $(top_builddir)lib/libm.a
269 lib-so-$(UCLIBC_HAS_FLOATS) += $(top_builddir)lib/libm.so
270 objclean-y += CLEAN_libm
274 $(top_builddir)lib/libm.so: $(top_builddir)lib/libm.a $(libc.depend)
276 $(top_builddir)lib/libm.so: $(libm_OUT)/libm_so.a $(libc.depend)
278 $(call link.so,$(libm_FULL_NAME),$(ABI_VERSION))
280 $(top_builddir)lib/libm.so: $(libm_OUT)/libm.oS | $(libc.depend)
281 $(call linkm.so,$(libm_FULL_NAME),$(ABI_VERSION))
284 $(libm_OUT)/libm_so.a: $(libm-so-y)
288 $(libm_OUT)/libm.oS: $(libm_SRC) $(libm_MSRC_FL) $(libm_MSRC_LD) $(libm_ARCH_SRC)
292 $(top_builddir)lib/libm.a: $(libm-a-y)
293 $(Q)$(INSTALL) -d $(dir $@)
297 $(libm_MOBJ_FL): $(libm_MSRC_FL)
300 $(libm_MOBJ_LD): $(libm_MSRC_LD)
303 $(libm_MOBJ_FL:.o=.os): $(libm_MSRC_FL)
306 $(libm_MOBJ_LD:.o=.os): $(libm_MSRC_LD)
309 # spare us from adding a gazillion dummy two-liner files
310 $(libm_MOBJ_FL:.o=.i): $(libm_MSRC_FL)
313 $(libm_MOBJ_LD:.o=.i): $(libm_MSRC_LD)
317 $(do_rm) $(addprefix $(libm_OUT)/,$(foreach e, o os oS a,$(foreach d, *. */*. */*/*.,$(d)$(e))))