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