math/Makefile

   1 # Makefile for the math library.
   2
   3 # Copyright (C) 1996 Free Software Foundation, Inc.
   4 # This file is part of the GNU C Library.
   5
   6 # The GNU C Library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Library General Public License as
   8 # published by the Free Software Foundation; either version 2 of the
   9 # License, or (at your option) any later version.
  10
  11 # The GNU C Library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Library General Public License for more details.
  15
  16 # You should have received a copy of the GNU Library General Public
  17 # License along with the GNU C Library; see the file COPYING.LIB.  If
  18 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  19 # Cambridge, MA 02139, USA.
  20
  21 subdir          := math
  22
  23 # Installed header files.
  24 headers         := math.h mathcalls.h __math.h huge_val.h nan.h fpu_control.h
  25
  26 # Internal header files.
  27 distribute      := math_private.h machine/asm.h machine/endian.h
  28
  29 # FPU support code.
  30 aux             := fpu_control setfpucw
  31
  32 # Build the -lm library.
  33
  34 extra-libs      := libm
  35 extra-libs-others = $(extra-libs)
  36
  37 libm-support = k_standard s_lib_version s_matherr s_signgam
  38 libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod  \
  39              e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow      \
  40              e_rem_pio2 e_remainder e_scalb e_sinh e_sqrt k_cos         \
  41              k_rem_pio2 k_sin k_tan s_asinh s_atan s_cbrt               \
  42              s_ceil s_copysign s_cos s_erf s_expm1 s_fabs s_finite      \
  43              s_floor s_frexp s_ilogb s_ldexp s_log1p s_logb             \
  44              s_modf s_nextafter s_rint s_scalbn s_significand           \
  45              s_sin s_tan s_tanh w_acos w_acosh w_asin                   \
  46              w_atan2 w_atanh w_cabs w_cosh w_drem w_exp w_fmod w_gamma  \
  47              w_gamma_r w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r       \
  48              w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt
  49 libm-routines = $(libm-support) $(libm-calls) \
  50                 $(patsubst %_rf,%f_r,$(libm-calls:=f))  \
  51                 $(long-m-$(long-double-fcts))
  52 long-m-routines = $(patsubst %_rl,%l_r,$(libm-calls:=l))
  53 long-m-yes = $(long-m-routines)
  54 distribute += $(long-m-yes:=.c)
  55
  56 # These functions are in libc instead of libm because __printf_fp
  57 # calls them, so any program using printf will need them linked in,
  58 # and we don't want to have to link every program with -lm.
  59 calls = s_isinf s_isnan s_finite s_copysign s_modf s_scalbn s_frexp s_ldexp
  60 routines = $(calls) $(calls:=f) $(long-c-$(long-double-fcts))
  61 long-c-yes = $(calls:=l)
  62 distribute += $(long-c-yes:=.c)
  63
  64
  65 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
  66 # for error handling in the -lm functions.
  67 install-lib += libieee.a
  68 non-lib.a += libieee.a
  69 extra-objs += libieee.a ieee-math.o
  70 distribute += ieee-math.c
  71
  72 include ../Rules
  73
  74
  75 # This file defines the default _LIB_VERSION variable that controls
  76 # the error return conventions for the math functions.
  77 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
  78
  79 # We don't want the fdlibm code to use the inline math functions,
  80 # only the fdlibm code.
  81 CPPFLAGS += -D__NO_MATH_INLINES
  82
  83 ifneq ($(long-double-fcts),yes)
  84 # The `double' and `long double' types are the same on this machine.
  85 # We won't compile the `long double' code at all.  Tell the `double' code
  86 # to define aliases for the `FUNCl' names.  To avoid type conflicts in
  87 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
  88 # `double' instead of `long double'.
  89 CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
  90 endif
  91
  92 # The fdlibm code generates a lot of these warnings but is otherwise clean.
  93 override CFLAGS += -Wno-uninitialized -Wno-write-strings
  94
  95 # The -lieee library is actually an object file.
  96 # The module just defines the _LIB_VERSION_ variable.
  97 # It's not a library to make sure it is linked in instead of s_lib_version.o.
  98 $(objpfx)libieee.a: $(objpfx)ieee-math.o
  99         rm -f $@
 100         ln $< $@