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# Makefile for the math library.
# Copyright (C) 1996 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
# You should have received a copy of the GNU Library General Public
# License along with the GNU C Library; see the file COPYING.LIB. If
# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
# Cambridge, MA 02139, USA.
subdir := math
# Installed header files.
headers := math.h mathcalls.h __math.h huge_val.h nan.h fpu_control.h
# Internal header files.
distribute := math_private.h machine/asm.h machine/endian.h
# FPU support code.
aux := fpu_control setfpucw
# Build the -lm library.
extra-libs := libm
extra-libs-others = $(extra-libs)
libm-support = k_standard s_lib_version s_matherr s_signgam
libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod \
e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow \
e_rem_pio2 e_remainder e_scalb e_sinh e_sqrt k_cos \
k_rem_pio2 k_sin k_tan s_asinh s_atan s_cbrt \
s_ceil s_copysign s_cos s_erf s_expm1 s_fabs s_finite \
s_floor s_frexp s_ilogb s_ldexp s_log1p s_logb \
s_modf s_nextafter s_rint s_scalbn s_significand \
s_sin s_tan s_tanh w_acos w_acosh w_asin \
w_atan2 w_atanh w_cabs w_cosh w_drem w_exp w_fmod w_gamma \
w_gamma_r w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r \
w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt
libm-routines = $(libm-support) $(libm-calls) \
$(patsubst %_rf,%f_r,$(libm-calls:=f)) \
$(long-m-$(long-double-fcts))
long-m-routines = $(patsubst %_rl,%l_r,$(libm-calls:=l))
long-m-yes = $(long-m-routines)
distribute += $(long-m-yes:=.c)
# These functions are in libc instead of libm because __printf_fp
# calls them, so any program using printf will need them linked in,
# and we don't want to have to link every program with -lm.
calls = s_isinf s_isnan s_finite s_copysign s_modf s_scalbn s_frexp s_ldexp
routines = $(calls) $(calls:=f) $(long-c-$(long-double-fcts))
long-c-yes = $(calls:=l)
distribute += $(long-c-yes:=.c)
# The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
# for error handling in the -lm functions.
install-lib += libieee.a
non-lib.a += libieee.a
extra-objs += libieee.a ieee-math.o
distribute += ieee-math.c
include ../Rules
# This file defines the default _LIB_VERSION variable that controls
# the error return conventions for the math functions.
CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
# We don't want the fdlibm code to use the inline math functions,
# only the fdlibm code.
CPPFLAGS += -D__NO_MATH_INLINES
ifneq ($(long-double-fcts),yes)
# The `double' and `long double' types are the same on this machine.
# We won't compile the `long double' code at all. Tell the `double' code
# to define aliases for the `FUNCl' names. To avoid type conflicts in
# defining those aliases, tell <math.h> to declare the `FUNCl' names with
# `double' instead of `long double'.
CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
endif
# The fdlibm code generates a lot of these warnings but is otherwise clean.
override CFLAGS += -Wno-uninitialized -Wno-write-strings
# The -lieee library is actually an object file.
# The module just defines the _LIB_VERSION_ variable.
# It's not a library to make sure it is linked in instead of s_lib_version.o.
$(objpfx)libieee.a: $(objpfx)ieee-math.o
rm -f $@
ln $< $@
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