1: # Copyright (C) 1996-2001,2002,2003,2004,2005,2006
    2: #       Free Software Foundation, Inc.
    3: # This file is part of the GNU C Library.
    4: 
    5: # The GNU C Library is free software; you can redistribute it and/or
    6: # modify it under the terms of the GNU Lesser General Public
    7: # License as published by the Free Software Foundation; either
    8: # version 2.1 of the License, or (at your option) any later version.
    9: 
   10: # The GNU C Library is distributed in the hope that it will be useful,
   11: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   12: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13: # Lesser General Public License for more details.
   14: 
   15: # You should have received a copy of the GNU Lesser General Public
   16: # License along with the GNU C Library; if not, write to the Free
   17: # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18: # 02111-1307 USA.
   19: 
   20: # Makefile for the math library.
   21: 
   22: subdir          := math
   23: 
   24: # Installed header files.
   25: headers         := math.h bits/mathcalls.h bits/mathinline.h bits/huge_val.h \
   26:                    bits/huge_valf.h bits/huge_vall.h bits/inf.h bits/nan.h \
   27:                    fpu_control.h complex.h bits/cmathcalls.h fenv.h \
   28:                    bits/fenv.h bits/fenvinline.h bits/mathdef.h tgmath.h
   29: 
   30: # Internal header files.
   31: distribute      := math_ldbl.h math_private.h machine/asm.h
   32: 
   33: # FPU support code.
   34: aux             := setfpucw fpu_control
   35: 
   36: # Build the -lm library.
   37: 
   38: extra-libs      := libm
   39: extra-libs-others = $(extra-libs)
   40: 
   41: libm-support = k_standard s_lib_version s_matherr s_signgam             \
   42:                fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg         \
   43:                ftestexcept fegetround fesetround fegetenv feholdexcpt  \
   44:                fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt      \
   45:                fegetexcept
   46: libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod  \
   47:              e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow     \
   48:              e_rem_pio2 e_remainder e_scalb e_sinh e_sqrt e_gamma_r    \
   49:              k_cos k_rem_pio2 k_sin k_tan s_asinh s_atan s_cbrt                \
   50:              s_ceil s_cos s_erf s_expm1 s_fabs                         \
   51:              s_floor s_ilogb s_log1p s_logb                            \
   52:              s_nextafter s_nexttoward s_rint s_scalbln                 \
   53:              s_significand s_sin s_tan s_tanh w_acos w_acosh w_asin    \
   54:              w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_exp10 w_fmod \
   55:              w_tgamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r       \
   56:              w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt     \
   57:              s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc           \
   58:              s_remquo e_log2 e_exp2 s_round s_nearbyint s_sincos       \
   59:              conj cimag creal cabs carg s_cexp s_csinh s_ccosh s_clog  \
   60:              s_catan s_casin s_ccos s_csin s_ctan s_ctanh s_cacos      \
   61:              s_casinh s_cacosh s_catanh s_csqrt s_cpow s_cproj s_clog10 \
   62:              s_fma s_lrint s_llrint s_lround s_llround e_exp10 w_log2  \
   63:              $(calls:s_%=m_%)
   64: 
   65: include ../Makeconfig
   66: 
   67: dbl-only-routines := branred doasin dosincos halfulp mpa mpatan2        \
   68:                      mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
   69:                      slowpow
   70: libm-routines = $(strip $(libm-support) $(libm-calls) \
   71:                         $(patsubst %_rf,%f_r,$(libm-calls:=f))       \
   72:                         $(long-m-$(long-double-fcts))) \
   73:                 $(dbl-only-routines)
   74: long-m-routines = $(patsubst %_rl,%l_r,$(libm-calls:=l))
   75: long-m-support = t_sincosl k_sincosl
   76: long-m-yes = $(long-m-routines) $(long-m-support)
   77: 
   78: # These functions are in libc instead of libm because __printf_fp
   79: # calls them, so any program using printf will need them linked in,
   80: # and we don't want to have to link every program with -lm.
   81: # In libm-calls (above), list m_foo in place of s_foo for any
   82: # routine that should be compiled separately for its libc and libm versions.
   83: calls = s_isinf s_isnan s_finite s_copysign s_modf s_scalbn s_frexp s_ldexp \
   84:         s_signbit
   85: generated += $(foreach s,.c .S l.c l.S f.c f.S,$(calls:s_%=m_%$s))
   86: routines = $(calls) $(calls:=f) $(long-c-$(long-double-fcts))
   87: long-c-yes = $(calls:=l)
   88: distribute += $(filter-out $(generated),$(long-m-yes:=.c) $(long-c-yes:=.c))
   89: 
   90: # Rules for the test suite.
   91: tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
   92:         test-misc test-fpucw tst-definitions test-tgmath test-tgmath-ret \
   93:         bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int test-tgmath2
   94: # We do the `long double' tests only if this data type is available and
   95: # distinct from `double'.
   96: test-longdouble-yes = test-ldouble test-ildoubl
   97: distribute += $(test-longdouble-yes:=.c)
   98: 
   99: ifneq (no,$(PERL))
  100: libm-tests = test-float test-double $(test-longdouble-$(long-double-fcts)) \
  101:         test-ifloat test-idouble
  102: libm-tests.o = $(addsuffix .o,$(libm-tests))
  103: 
  104: tests += $(libm-tests)
  105: libm-tests-generated = libm-test-ulps.h libm-test.c
  106: generated += $(libm-tests-generated) libm-test.stmp
  107: 
  108: # This is needed for dependencies
  109: before-compile += $(objpfx)libm-test.c
  110: 
  111: ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
  112: 
  113: $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
  114: 
  115: $(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl
  116:         $(make-target-directory)
  117:         $(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
  118:         @echo > $@
  119: 
  120: $(objpfx)test-float.o: $(objpfx)libm-test.stmp
  121: $(objpfx)test-ifloat.o: $(objpfx)libm-test.stmp
  122: $(objpfx)test-double.o: $(objpfx)libm-test.stmp
  123: $(objpfx)test-idouble.o: $(objpfx)libm-test.stmp
  124: $(objpfx)test-ldouble.o: $(objpfx)libm-test.stmp
  125: $(objpfx)test-ildoubl.o: $(objpfx)libm-test.stmp
  126: endif
  127: 
  128: CFLAGS-test-float.c = -fno-inline -ffloat-store -fno-builtin
  129: CFLAGS-test-double.c = -fno-inline -ffloat-store -fno-builtin
  130: CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin
  131: CFLAGS-test-tgmath.c = -fno-builtin
  132: CFLAGS-test-tgmath2.c = -fno-builtin
  133: CFLAGS-test-tgmath-ret.c = -fno-builtin
  134: CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
  135:                          -DTEST_FAST_MATH -fno-builtin
  136: CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
  137:                          -DTEST_FAST_MATH -fno-builtin
  138: CPPFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
  139:                           -DTEST_FAST_MATH -fno-builtin
  140: 
  141: distribute += libm-test.inc gen-libm-test.pl README.libm-test
  142: 
  143: 
  144: # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
  145: # for error handling in the -lm functions.
  146: install-lib += libieee.a
  147: non-lib.a += libieee.a
  148: extra-objs += libieee.a ieee-math.o
  149: distribute += ieee-math.c
  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): $(objpfx)libm_b.a
  198: endif
  199: 
  200: ifeq ($(build-static),yes)
  201: o = .o
  202: else
  203: o = .os
  204: endif
  205: gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%$o,\
  206:                       add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
  207:                       lshift rshift mp_clz_tab udiv_qrnnd inlines)
  208: $(objpfx)atest-exp: $(gmp-objs)
  209: $(objpfx)atest-sincos: $(gmp-objs)
  210: $(objpfx)atest-exp2: $(gmp-objs)
  211: 
  212: # Depend on libc.so so a DT_NEEDED is generated in the shared objects.
  213: # This ensures they will load libc.so for needed symbols if loaded by
  214: # a statically-linked program that hasn't already loaded it.
  215: $(objpfx)libm.so: $(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a