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 ifneq ($(TARGET_SUBARCH),)
48 libm_SUBARCH_DIR:=$(libm_DIR)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
49 libm_SUBARCH_OUT:=$(libm_OUT)/$(TARGET_ARCH)/$(TARGET_SUBARCH)
52 ifeq ($(UCLIBC_HAS_FPU),y)
53 ifeq ($(DO_C99_MATH),y)
54 -include $(libm_ARCH_DIR)/Makefile.arch
55 -include $(libm_SUBARCH_DIR)/Makefile.arch
59 FL_MSRC := float_wrappers.c
60 LD_MSRC := ldouble_wrappers.c
62 ifeq ($(DO_C99_MATH),y)
64 e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
65 e_exp.c e_fmod.c e_hypot.c \
66 e_lgamma_r.c e_log.c e_log2.c e_log10.c \
67 e_pow.c e_remainder.c e_rem_pio2.c e_scalb.c e_sinh.c \
68 e_sqrt.c k_cos.c k_rem_pio2.c k_sin.c k_standard.c k_tan.c \
69 s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
70 s_erf.c s_expm1.c s_fabs.c s_finite.c s_floor.c s_frexp.c \
71 s_ilogb.c s_ldexp.c s_lib_version.c s_lrint.c s_lround.c s_llround.c \
72 s_log1p.c s_logb.c s_matherr.c s_modf.c s_nextafter.c \
73 s_nextafterf.c s_round.c \
74 s_rint.c s_scalbn.c s_signgam.c s_significand.c s_sin.c s_tan.c \
77 nan.c carg.c s_llrint.c \
78 s_fpclassify.c s_fpclassifyf.c s_signbit.c s_signbitf.c \
79 s_isnan.c s_isnanf.c s_isinf.c s_isinff.c s_finitef.c \
80 s_fdim.c s_fma.c s_fmax.c s_fmin.c \
83 # Not implemented [yet?], see comment in float_wrappers.c:
84 # fdimf.o fmaf.o fmaxf.o fminf.o
85 # nearbyintf.o remquof.o scalblnf.o tgammaf.o
138 # Not implemented [yet?]: nexttowardl.o
206 # This list of math functions was taken from POSIX/IEEE 1003.1b-1993
208 s_atan.c s_ceil.c s_cos.c \
209 s_fabs.c s_floor.c s_frexp.c \
210 s_ldexp.c s_modf.c s_sin.c \
212 s_expm1.c s_scalbn.c s_copysign.c e_acos.c e_asin.c e_atan2.c \
213 k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log10.c e_pow.c \
214 k_sin.c e_sinh.c e_sqrt.c k_tan.c e_rem_pio2.c k_rem_pio2.c \
216 # We'll add sqrtf to avoid problems with libstdc++
220 ifeq ($(DO_XSI_MATH),y)
221 libm_CSRC += e_j0.c e_j1.c e_jn.c
224 # assume that arch specific versions are provided as single sources/objects
225 ifeq ($(UCLIBC_HAS_FPU),y)
226 ifeq ($(DO_C99_MATH),y)
227 ifneq ($(strip $(libm_ARCH_OBJS)),)
228 ifeq ($(TARGET_ARCH)-$(CONFIG_E500),powerpc-y)
229 CFLAGS-libm/$(TARGET_ARCH)/e500/ := $(CFLAGS-libm)
231 CFLAGS-libm/$(TARGET_ARCH)/ := $(CFLAGS-libm)
232 CFLAGS-libm/$(TARGET_ARCH)/$(TARGET_SUBARCH)/ := $(CFLAGS-libm)
235 # remove generic sources, if arch specific version is present
236 ifneq ($(strip $(libm_ARCH_SRC)),)
237 libm_CSRC := $(filter-out $(notdir $(libm_ARCH_SRC)),$(libm_CSRC))
240 # remove generic objects built from multi-sources, if arch specific version is present
241 FL_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(FL_MOBJ))
242 LD_MOBJ := $(filter-out $(notdir $(libm_ARCH_OBJS)),$(LD_MOBJ))
244 # we also try to remove % if s_% is in arch specific subdir
245 FL_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(FL_MOBJ))
246 LD_MOBJ := $(filter-out $(patsubst s_%.o,%.o,$(notdir $(libm_ARCH_OBJS))),$(LD_MOBJ))
251 libm_SRC := $(patsubst %.c,$(libm_DIR)/%.c,$(libm_CSRC))
252 libm_OBJ := $(patsubst $(libm_DIR)/%.c,$(libm_OUT)/%.o,$(libm_SRC))
254 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
255 libm_MSRC_LD := $(libm_DIR)/$(LD_MSRC)
256 libm_MOBJ_LD := $(patsubst %.o,$(libm_OUT)/%.o,$(LD_MOBJ))
258 libm_MSRC_FL := $(libm_DIR)/$(FL_MSRC)
259 libm_MOBJ_FL := $(patsubst %.o,$(libm_OUT)/%.o,$(FL_MOBJ))
263 CFLAGS-libm += $(patsubst %,-DL_%,$(subst .o,,$(notdir $(libm_MOBJ_FL))))
264 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH)),y)
265 CFLAGS-libm += $(patsubst %,-DL_%,$(subst .o,,$(notdir $(libm_MOBJ_LD))))
269 libm_OBJS := $(libm_OBJ) $(libm_MOBJ_FL) $(libm_MOBJ_LD)
272 libm-a-y += $(libm_OBJS:.o=.os)
274 libm-a-y += $(libm_OBJS)
276 libm-so-y += $(libm_OBJS:.o=.os)
278 lib-a-$(UCLIBC_HAS_FLOATS) += $(top_builddir)lib/libm.a
279 lib-so-$(UCLIBC_HAS_FLOATS) += $(top_builddir)lib/libm.so
280 objclean-y += CLEAN_libm
284 $(top_builddir)lib/libm.so: $(top_builddir)lib/libm.a $(libc.depend)
286 $(top_builddir)lib/libm.so: $(libm_OUT)/libm_so.a $(libc.depend)
288 $(call link.so,$(libm_FULL_NAME),$(ABI_VERSION))
290 $(top_builddir)lib/libm.so: $(libm_OUT)/libm.oS | $(libc.depend)
291 $(call linkm.so,$(libm_FULL_NAME),$(ABI_VERSION))
294 $(libm_OUT)/libm_so.a: $(libm-so-y)
298 $(libm_OUT)/libm.oS: $(libm_SRC) $(libm_MSRC_FL) $(libm_MSRC_LD) $(libm_ARCH_SRC)
302 $(top_builddir)lib/libm.a: $(libm-a-y)
303 $(Q)$(INSTALL) -d $(dir $@)
307 $(libm_MOBJ_FL): $(libm_MSRC_FL)
310 $(libm_MOBJ_LD): $(libm_MSRC_LD)
313 $(libm_MOBJ_FL:.o=.os): $(libm_MSRC_FL)
316 $(libm_MOBJ_LD:.o=.os): $(libm_MSRC_LD)
319 # spare us from adding a gazillion dummy two-liner files
320 $(libm_MOBJ_FL:.o=.i): $(libm_MSRC_FL)
323 $(libm_MOBJ_LD:.o=.i): $(libm_MSRC_LD)
327 $(do_rm) $(addprefix $(libm_OUT)/,$(foreach e, o os oS a,$(foreach d, *. */*. */*/*.,$(d)$(e))))