math/Makefile

   1 # Copyright (C) 1996-2006,2011,2012 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 # Makefile for the math library.
  19
  20 subdir          := math
  21
  22 # Installed header files.
  23 headers         := math.h bits/mathcalls.h bits/mathinline.h bits/huge_val.h \
  24                    bits/huge_valf.h bits/huge_vall.h bits/inf.h bits/nan.h \
  25                    fpu_control.h complex.h bits/cmathcalls.h fenv.h \
  26                    bits/fenv.h bits/fenvinline.h bits/mathdef.h tgmath.h \
  27                    bits/math-finite.h
  28
  29 # FPU support code.
  30 aux             := setfpucw fpu_control
  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                fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg          \
  39                ftestexcept fegetround fesetround fegetenv feholdexcpt   \
  40                fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt       \
  41                fegetexcept
  42 libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod  \
  43              e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow      \
  44              e_rem_pio2 e_remainder e_scalb e_sinh e_sqrt e_gamma_r     \
  45              e_ilogb                                                    \
  46              k_cos k_rem_pio2 k_sin k_tan s_asinh s_atan s_cbrt         \
  47              s_ceil s_cos s_erf s_expm1 s_fabs                          \
  48              s_floor s_log1p s_logb                                     \
  49              s_nextafter s_nexttoward s_rint s_scalbln                  \
  50              s_significand s_sin s_tan s_tanh w_acos w_acosh w_asin     \
  51              w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_exp10 w_fmod  \
  52              w_tgamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r        \
  53              w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt      \
  54              w_ilogb                                                    \
  55              s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc            \
  56              s_remquo e_log2 e_exp2 s_round s_nearbyint s_sincos        \
  57              conj cimag creal cabs carg s_cexp s_csinh s_ccosh s_clog   \
  58              s_catan s_casin s_ccos s_csin s_ctan s_ctanh s_cacos       \
  59              s_casinh s_cacosh s_catanh s_csqrt s_cpow s_cproj s_clog10 \
  60              s_fma s_lrint s_llrint s_lround s_llround e_exp10 w_log2   \
  61              s_isinf_ns $(calls:s_%=m_%) x2y2m1
  62
  63 include ../Makeconfig
  64
  65 dbl-only-routines := branred doasin dosincos halfulp mpa mpatan2        \
  66                      mpatan mpexp mplog mpsqrt mptan sincos32 slowexp   \
  67                      slowpow sincostab
  68 libm-routines = $(strip $(libm-support) $(libm-calls) \
  69                         $(patsubst %_rf,%f_r,$(libm-calls:=f))  \
  70                         $(long-m-$(long-double-fcts))) \
  71                 $(dbl-only-routines)
  72 long-m-routines = $(patsubst %_rl,%l_r,$(libm-calls:=l))
  73 long-m-support = t_sincosl k_sincosl
  74 long-m-yes = $(long-m-routines) $(long-m-support)
  75
  76 # These functions are in libc instead of libm because __printf_fp
  77 # calls them, so any program using printf will need them linked in,
  78 # and we don't want to have to link every program with -lm.
  79 # In libm-calls (above), list m_foo in place of s_foo for any
  80 # routine that should be compiled separately for its libc and libm versions.
  81 calls = s_isinf s_isnan s_finite s_copysign s_modf s_scalbn s_frexp s_ldexp \
  82         s_signbit
  83 generated += $(foreach s,.c .S l.c l.S f.c f.S,$(calls:s_%=m_%$s))
  84 routines = $(calls) $(calls:=f) $(long-c-$(long-double-fcts))
  85 long-c-yes = $(calls:=l)
  86
  87 # Rules for the test suite.
  88 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
  89         test-misc test-fpucw tst-definitions test-tgmath test-tgmath-ret \
  90         bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int \
  91         test-tgmath2 test-powl tst-CMPLX tst-CMPLX2
  92 # We do the `long double' tests only if this data type is available and
  93 # distinct from `double'.
  94 test-longdouble-yes = test-ldouble test-ildoubl
  95
  96 ifneq (no,$(PERL))
  97 libm-tests = test-float test-double $(test-longdouble-$(long-double-fcts)) \
  98         test-ifloat test-idouble
  99 libm-tests.o = $(addsuffix .o,$(libm-tests))
 100
 101 tests += $(libm-tests)
 102 libm-tests-generated = libm-test-ulps.h libm-test.c
 103 generated += $(libm-tests-generated) libm-test.stmp
 104
 105 # This is needed for dependencies
 106 before-compile += $(objpfx)libm-test.c
 107
 108 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
 109
 110 $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
 111
 112 $(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl
 113         $(make-target-directory)
 114         $(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
 115         @echo > $@
 116
 117 $(objpfx)test-float.o: $(objpfx)libm-test.stmp
 118 $(objpfx)test-ifloat.o: $(objpfx)libm-test.stmp
 119 $(objpfx)test-double.o: $(objpfx)libm-test.stmp
 120 $(objpfx)test-idouble.o: $(objpfx)libm-test.stmp
 121 $(objpfx)test-ldouble.o: $(objpfx)libm-test.stmp
 122 $(objpfx)test-ildoubl.o: $(objpfx)libm-test.stmp
 123 endif
 124
 125 CFLAGS-test-float.c = -fno-inline -ffloat-store -fno-builtin -frounding-math
 126 CFLAGS-test-double.c = -fno-inline -ffloat-store -fno-builtin -frounding-math
 127 CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin -frounding-math
 128 CFLAGS-test-tgmath.c = -fno-builtin
 129 # The following testcase uses very long lines (>3 million), so it may take a
 130 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
 131 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
 132 CFLAGS-test-tgmath2.c = -fno-builtin
 133 CFLAGS-test-tgmath-ret.c = -fno-builtin
 134 CFLAGS-test-powl.c = -fno-builtin
 135 CFLAGS-test-test-fenv.c = -frounding-math
 136 CFLAGS-test-misc.c = -frounding-math
 137 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
 138                          -DTEST_FAST_MATH -fno-builtin -frounding-math
 139 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
 140                          -DTEST_FAST_MATH -fno-builtin -frounding-math
 141 CPPFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
 142                           -DTEST_FAST_MATH -fno-builtin -frounding-math
 143
 144
 145 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
 146 # for error handling in the -lm functions.
 147 install-lib += libieee.a
 148 non-lib.a += libieee.a
 149 extra-objs += libieee.a ieee-math.o
 150
 151 include ../Rules
 152
 153
 154 # The generated sysd-rules file defines rules like this for sources
 155 # coming from sysdeps/ directories.  These rules find the generic sources.
 156 define o-iterator-doit
 157 $(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
 158 endef
 159 object-suffixes-left := $(all-object-suffixes)
 160 include $(o-iterator)
 161
 162
 163 # This file defines the default _LIB_VERSION variable that controls
 164 # the error return conventions for the math functions.
 165 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
 166
 167 # We don't want the fdlibm code to use the inline math functions,
 168 # only the fdlibm code.
 169 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
 170
 171 ifneq ($(long-double-fcts),yes)
 172 # The `double' and `long double' types are the same on this machine.
 173 # We won't compile the `long double' code at all.  Tell the `double' code
 174 # to define aliases for the `FUNCl' names.  To avoid type conflicts in
 175 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
 176 # `double' instead of `long double'.
 177 math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
 178 endif
 179
 180 # The fdlibm code generates a lot of these warnings but is otherwise clean.
 181 override CFLAGS += -Wno-uninitialized
 182
 183 # The -lieee library is actually an object file.
 184 # The module just defines the _LIB_VERSION_ variable.
 185 # It's not a library to make sure it is linked in instead of s_lib_version.o.
 186 $(objpfx)libieee.a: $(objpfx)ieee-math.o
 187         rm -f $@
 188         $(patsubst %/,cd % &&,$(objpfx)) \
 189         $(LN_S) $(<F) $(@F)
 190
 191 ifeq ($(build-shared),yes)
 192 $(addprefix $(objpfx),$(tests)): $(objpfx)libm.so$(libm.so-version)
 193 else
 194 $(addprefix $(objpfx),$(tests)): $(objpfx)libm.a
 195 endif
 196 ifeq ($(build-bounded),yes)
 197 $(tests:%=$(objpfx)%-bp): $(objpfx)libm_b.a
 198 endif
 199
 200 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 201                       add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
 202                       lshift rshift mp_clz_tab udiv_qrnnd inlines)
 203 $(objpfx)atest-exp: $(gmp-objs)
 204 $(objpfx)atest-sincos: $(gmp-objs)
 205 $(objpfx)atest-exp2: $(gmp-objs)
 206
 207 # Depend on libc.so so a DT_NEEDED is generated in the shared objects.
 208 # This ensures they will load libc.so for needed symbols if loaded by
 209 # a statically-linked program that hasn't already loaded it.
 210 $(objpfx)libm.so: $(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a