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>
25 CFLAGS-libm := -DNOT_IN_libc -DIS_IN_libm $(SSP_ALL_CFLAGS)
26 CFLAGS-libm += -D_IEEE_LIBM
28 LDFLAGS-libm.so := $(LDFLAGS)
30 LIBS-libm.so := $(LIBS)
32 libm_FULL_NAME := libm-$(VERSION).so
34 libm_DIR:=$(top_srcdir)libm
35 libm_OUT:=$(top_builddir)libm
37 # Fix builds for powerpc as there are different cores in this
39 ifeq ($(TARGET_ARCH)-$(CONFIG_E500),powerpc-y)
40 libm_ARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)/e500
41 libm_ARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)/e500
43 libm_ARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)
44 libm_ARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)
47 ifeq ($(UCLIBC_HAS_FPU),y)
48 ifeq ($(DO_C99_MATH),y)
49 -include $(libm_ARCH_DIR)/Makefile.arch
53 FL_MSRC := float_wrappers.c
54 LD_MSRC := ldouble_wrappers.c
56 ifeq ($(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 e_j0.c \
60 e_j1.c e_jn.c 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 # exp2f.o fdimf.o fmaf.o fmaxf.o fminf.o log2f.o
79 # nearbyintf.o remquof.o scalblnf.o tgammaf.o
130 # Not implemented [yet?]: nexttowardl.o
198 # This list of math functions was taken from POSIX/IEEE 1003.1b-1993
200 s_atan.c s_ceil.c s_cos.c \
201 s_fabs.c s_floor.c s_frexp.c \
202 s_ldexp.c s_modf.c s_sin.c \
204 s_expm1.c s_scalbn.c s_copysign.c e_acos.c e_asin.c e_atan2.c \
205 k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log10.c e_pow.c \
206 k_sin.c e_sinh.c e_sqrt.c k_tan.c e_rem_pio2.c k_rem_pio2.c \
208 # We'll add sqrtf to avoid problems with libstdc++
212 # assume that arch specific versions are provided as single sources/objects
213 ifeq ($(UCLIBC_HAS_FPU),y)
214 ifeq ($(DO_C99_MATH),y)
215 ifneq ($(strip $(libm_ARCH_OBJS)),)
216 ifeq ($(TARGET_ARCH)-$(CONFIG_E500),powerpc-y)
217 CFLAGS-libm/$(TARGET_ARCH)/e500/ := $(CFLAGS-libm)
219 CFLAGS-libm/$(TARGET_ARCH)/ := $(CFLAGS-libm)
222 # remove generic sources, if arch specific version is present
223 ifneq ($(strip $(libm_ARCH_SRC)),)
224 libm_CSRC := $(filter-out $(notdir $(libm_ARCH_SRC)),$(libm_CSRC))
227 # remove generic objects built from multi-sources, if arch specific version is present
228 FL_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(FL_MOBJ))
229 LD_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(LD_MOBJ))
231 # we also try to remove % if s_% is in arch specific subdir
232 FL_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(FL_MOBJ))
233 LD_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(LD_MOBJ))
238 libm_SRC := $(patsubst %.c,$(libm_DIR)/%.c,$(libm_CSRC))
239 libm_OBJ := $(patsubst $(libm_DIR)/%.c,$(libm_OUT)/%.o,$(libm_SRC))
241 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
242 libm_MSRC_LD := $(libm_DIR)/$(LD_MSRC)
243 libm_MOBJ_LD := $(patsubst %.o,$(libm_OUT)/%.o,$(LD_MOBJ))
245 libm_MSRC_FL := $(libm_DIR)/$(FL_MSRC)
246 libm_MOBJ_FL := $(patsubst %.o,$(libm_OUT)/%.o,$(FL_MOBJ))
250 CFLAGS-libm += $(patsubst %,-DL_%,$(subst .o,,$(notdir $(libm_MOBJ_FL))))
251 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
252 CFLAGS-libm += $(patsubst %,-DL_%,$(subst .o,,$(notdir $(libm_MOBJ_LD))))
256 libm_OBJS := $(libm_OBJ) $(libm_MOBJ_FL) $(libm_MOBJ_LD)
259 libm-a-y += $(libm_OBJS:.o=.os)
261 libm-a-y += $(libm_OBJS)
263 libm-so-y += $(libm_OBJS:.o=.os)
265 lib-a-$(UCLIBC_HAS_FLOATS) += $(top_builddir)lib/libm.a
266 lib-so-$(UCLIBC_HAS_FLOATS) += $(top_builddir)lib/libm.so
267 objclean-y += libm_clean
271 $(top_builddir)lib/libm.so: $(top_builddir)lib/libm.a $(libc.depend)
273 $(top_builddir)lib/libm.so: $(libm_OUT)/libm_so.a $(libc.depend)
275 $(call link.so,$(libm_FULL_NAME),$(MAJOR_VERSION))
277 $(top_builddir)lib/libm.so: $(libm_OUT)/libm.oS | $(libc.depend)
278 $(call linkm.so,$(libm_FULL_NAME),$(MAJOR_VERSION))
281 $(libm_OUT)/libm_so.a: $(libm-so-y)
285 $(libm_OUT)/libm.oS: $(libm_SRC) $(libm_MSRC_FL) $(libm_MSRC_LD) $(libm_ARCH_SRC)
289 $(top_builddir)lib/libm.a: $(libm-a-y)
290 $(Q)$(INSTALL) -d $(dir $@)
294 $(libm_MOBJ_FL): $(libm_MSRC_FL)
297 $(libm_MOBJ_LD): $(libm_MSRC_LD)
300 $(libm_MOBJ_FL:.o=.os): $(libm_MSRC_FL)
303 $(libm_MOBJ_LD:.o=.os): $(libm_MSRC_LD)
306 # spare us from adding a gazillion dummy two-liner files
307 $(libm_MOBJ_FL:.o=.i): $(libm_MSRC_FL)
310 $(libm_MOBJ_LD:.o=.i): $(libm_MSRC_LD)
314 $(do_rm) $(addprefix $(libm_OUT)/,$(foreach e, o os oS a,$(foreach d, *. */*. */*/*.,$(d)$(e))))