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
)
27 LDFLAGS-
$(UCLIBC_FORMAT_DSBT_ELF
)-libm.so
:= -Wl
,--dsbt-index
=5
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
:=$(top_builddir
)libm
37 libm_ARCH_DIR
:=$(libm_DIR
)/$(TARGET_ARCH
)
38 libm_ARCH_OUT
:=$(libm_OUT
)/$(TARGET_ARCH
)
40 ifneq ($(TARGET_SUBARCH
),)
41 libm_SUBARCH_DIR
:=$(libm_DIR
)/$(TARGET_ARCH
)/$(TARGET_SUBARCH
)
42 libm_SUBARCH_OUT
:=$(libm_OUT
)/$(TARGET_ARCH
)/$(TARGET_SUBARCH
)
45 ifeq ($(UCLIBC_HAS_FPU
),y
)
46 ifeq ($(DO_C99_MATH
),y
)
47 -include $(libm_ARCH_DIR
)/Makefile.arch
48 -include $(libm_SUBARCH_DIR
)/Makefile.arch
52 FL_MSRC
:= float_wrappers.c
53 LD_MSRC
:= ldouble_wrappers.c
55 ifeq ($(DO_C99_MATH
),y
)
57 e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
58 e_exp.c e_exp10.c e_fmod.c e_hypot.c \
59 e_lgamma_r.c e_log.c e_log2.c e_log10.c \
60 e_pow.c e_remainder.c e_rem_pio2.c e_scalb.c e_sinh.c \
61 e_sqrt.c k_cos.c k_rem_pio2.c k_sin.c k_tan.c \
62 s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
63 s_erf.c s_expm1.c s_fabs.c s_finite.c s_floor.c s_frexp.c \
64 s_ilogb.c s_ldexp.c s_lib_version.c s_lrint.c s_lround.c s_llround.c \
65 s_log1p.c s_logb.c s_modf.c s_nextafter.c \
66 s_nextafterf.c s_round.c \
67 s_rint.c s_scalbn.c s_signgam.c s_significand.c s_sin.c s_tan.c \
70 nan.c carg.c s_llrint.c \
71 s_fpclassify.c s_fpclassifyf.c s_signbit.c s_signbitf.c \
72 s_isnan.c s_isnanf.c s_isinf.c s_isinff.c s_finitef.c \
73 s_fdim.c s_fma.c s_fmax.c s_fmin.c \
137 ifeq ($(UCLIBC_SUSV3_LEGACY
),y
)
141 # Do not (yet?) implement the float variants of bessel functions
142 ifeq (not-yet-implemented-
$(DO_XSI_MATH
),y
)
218 # Do not (yet?) implement the long double variants of bessel functions
219 ifeq (not-yet-implemented-
$(DO_XSI_MATH
),y
)
231 # This list of math functions was taken from POSIX/IEEE 1003.1b-1993
233 s_atan.c s_ceil.c s_cos.c \
234 s_fabs.c s_floor.c s_frexp.c \
235 s_ldexp.c s_modf.c s_sin.c \
237 s_expm1.c s_scalbn.c s_copysign.c e_acos.c e_asin.c e_atan2.c \
238 k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log10.c e_pow.c \
239 k_sin.c e_sinh.c e_sqrt.c k_tan.c e_rem_pio2.c k_rem_pio2.c \
241 # We'll add sqrtf to avoid problems with libstdc++
245 ifeq ($(DO_XSI_MATH
),y
)
246 libm_CSRC
+= e_j0.c e_j1.c e_jn.c
249 # assume that arch specific versions are provided as single sources/objects
250 ifeq ($(UCLIBC_HAS_FPU
),y
)
251 ifeq ($(DO_C99_MATH
),y
)
252 ifneq ($(strip $(libm_ARCH_OBJS
)),)
254 # remove generic sources, if arch specific version is present
255 ifneq ($(strip $(libm_ARCH_SRC
)),)
256 libm_CSRC
:= $(filter-out $(notdir $(libm_ARCH_SRC
)),$(libm_CSRC
))
259 # remove generic objects built from multi-sources, if arch specific version is present
260 FL_MOBJ
:= $(filter-out $(notdir $(libm_ARCH_OBJS
)),$(FL_MOBJ
))
261 LD_MOBJ
:= $(filter-out $(notdir $(libm_ARCH_OBJS
)),$(LD_MOBJ
))
263 # we also try to remove % if s_% is in arch specific subdir
264 FL_MOBJ
:= $(filter-out $(patsubst s_
%.o
,%.o
,$(notdir $(libm_ARCH_OBJS
))),$(FL_MOBJ
))
265 LD_MOBJ
:= $(filter-out $(patsubst s_
%.o
,%.o
,$(notdir $(libm_ARCH_OBJS
))),$(LD_MOBJ
))
270 libm_SRC
:= $(patsubst %.c
,$(libm_DIR
)/%.c
,$(libm_CSRC
))
271 libm_OBJ
:= $(patsubst $(libm_DIR
)/%.c
,$(libm_OUT
)/%.o
,$(libm_SRC
))
273 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH
)),y
)
274 libm_MSRC_LD
:= $(libm_DIR
)/$(LD_MSRC
)
275 libm_MOBJ_LD
:= $(patsubst %.o
,$(libm_OUT
)/%.o
,$(LD_MOBJ
))
277 libm_MSRC_FL
:= $(libm_DIR
)/$(FL_MSRC
)
278 libm_MOBJ_FL
:= $(patsubst %.o
,$(libm_OUT
)/%.o
,$(FL_MOBJ
))
282 CFLAGS-libm
+= $(patsubst %,-DL_
%,$(subst .o
,,$(notdir $(libm_MOBJ_FL
))))
283 ifeq ($(strip $(UCLIBC_HAS_LONG_DOUBLE_MATH
)),y
)
284 CFLAGS-libm
+= $(patsubst %,-DL_
%,$(subst .o
,,$(notdir $(libm_MOBJ_LD
))))
288 libm_OBJS
:= $(libm_OBJ
) $(libm_MOBJ_FL
) $(libm_MOBJ_LD
)
291 libm-a-y
+= $(libm_OBJS
:.o
=.os
)
293 libm-a-y
+= $(libm_OBJS
)
295 libm-so-y
+= $(libm_OBJS
:.o
=.os
)
297 lib-a-
$(UCLIBC_HAS_FLOATS
) += $(top_builddir
)lib
/libm.a
298 lib-so-
$(UCLIBC_HAS_FLOATS
) += $(top_builddir
)lib
/libm.so
299 objclean-y
+= CLEAN_libm
303 $(top_builddir
)lib
/libm.so
: $(top_builddir
)lib
/libm.a
$(libc.depend
)
305 $(top_builddir
)lib
/libm.so
: $(libm_OUT
)/libm_so.a
$(libc.depend
)
307 $(call link.so
,$(libm_FULL_NAME
),$(ABI_VERSION
))
308 # link for backward compatibility
309 $(call link.so
,$(libm_FULL_NAME
),0)
311 $(top_builddir
)lib
/libm.so
: $(libm_OUT
)/libm.oS |
$(libc.depend
)
312 $(call linkm.so
,$(libm_FULL_NAME
),$(ABI_VERSION
))
313 # link for backward compatibility
314 $(call linkm.so
,$(libm_FULL_NAME
),0)
317 $(libm_OUT
)/libm_so.a
: $(libm-so-y
)
321 $(libm_OUT
)/libm.oS
: $(libm_SRC
) $(libm_MSRC_FL
) $(libm_MSRC_LD
) $(libm_ARCH_SRC
)
325 $(top_builddir
)lib
/libm.a
: $(libm-a-y
)
326 $(Q
)$(INSTALL
) -d
$(dir $@
)
330 $(libm_MOBJ_FL
): $(libm_MSRC_FL
)
333 $(libm_MOBJ_LD
): $(libm_MSRC_LD
)
336 $(libm_MOBJ_FL
:.o
=.os
): $(libm_MSRC_FL
)
339 $(libm_MOBJ_LD
:.o
=.os
): $(libm_MSRC_LD
)
342 # spare us from adding a gazillion dummy two-liner files
343 $(libm_MOBJ_FL
:.o
=.i
): $(libm_MSRC_FL
)
346 $(libm_MOBJ_LD
:.o
=.i
): $(libm_MSRC_LD
)
350 $(do_rm
) $(addprefix $(libm_OUT
)/,$(foreach e
, o os oS a
,$(foreach d
, *.
*/*.
*/*/*.
,$(d
)$(e
))))