1 # Copyright (C) 1996-2015 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
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.
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.
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/>.
18 # Makefile for the math library.
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 bits
/math-finite.h bits
/math-vector.h \
30 bits
/libm-simd-decl-stubs.h
33 aux
:= setfpucw fpu_control
35 # Build the -lm library.
38 extra-libs-others
= $(extra-libs
)
40 libm-support
= s_lib_version s_matherr s_signgam \
41 fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg \
42 ftestexcept fegetround fesetround fegetenv feholdexcpt \
43 fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt \
45 libm-calls
= e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod \
46 e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow \
47 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_log1p w_log1p s_logb \
52 s_nextafter s_nexttoward s_rint s_scalbln w_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 \
58 s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc \
59 s_remquo e_log2 e_exp2 s_round s_nearbyint s_sincos \
60 conj cimag creal cabs carg s_cexp s_csinh s_ccosh s_clog \
61 s_catan s_casin s_ccos s_csin s_ctan s_ctanh s_cacos \
62 s_casinh s_cacosh s_catanh s_csqrt s_cpow s_cproj s_clog10 \
63 s_fma s_lrint s_llrint s_lround s_llround e_exp10 w_log2 \
64 s_isinf_ns s_issignaling
$(calls
:s_
%=m_
%) x2y2m1 k_casinh \
65 gamma_product k_standard
67 dbl-only-routines
:= branred doasin dosincos halfulp mpa mpatan2 \
68 mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
70 libm-routines
= $(strip $(libm-support
) $(libm-calls
) \
71 $(patsubst %_rf
,%f_r
,$(libm-calls
:=f
)) \
72 $(long-m-
$(long-double-fcts
))) \
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
)
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 \
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
= $(calls
:=l
)
89 ifeq ($(build-mathvec
),yes
)
90 # We need to install libm.so as linker script
91 # for more comfortable use of vector math library.
92 install-lib-ldscripts
:= libm.so
93 install_subdir
: $(inst_libdir
)/libm.so
94 $(inst_libdir
)/libm.so
: $(common-objpfx
)format.lds \
98 (echo
'/* GNU ld script'; echo
'*/';\
100 echo
'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
101 'AS_NEEDED ( $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
105 # Rules for the test suite.
106 tests
= test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
107 test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
108 test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
109 test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
110 test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
112 tests-static
= test-fpucw-static test-fpucw-ieee-static
113 # We do the `long double' tests only if this data type is available and
114 # distinct from `double'.
115 test-longdouble-yes
= test-ldouble test-ildoubl
118 libm-tests
= test-float test-double
$(test-longdouble-
$(long-double-fcts
)) \
119 test-ifloat test-idouble
120 libm-tests.o
= $(addsuffix .o
,$(libm-tests
))
122 tests
+= $(libm-tests
)
123 libm-tests-generated
= libm-test-ulps.h libm-have-vector-test.h libm-test.c
124 generated
+= $(libm-tests-generated
) libm-test.stmp
126 # This is needed for dependencies
127 before-compile
+= $(objpfx
)libm-test.c
129 ulps-file
= $(firstword $(wildcard $(sysdirs
:%=%/libm-test-ulps
)))
131 $(addprefix $(objpfx
), $(libm-tests-generated
)): $(objpfx
)libm-test.stmp
133 $(objpfx
)libm-test.stmp
: $(ulps-file
) libm-test.inc gen-libm-test.pl \
134 gen-libm-have-vector-test.sh auto-libm-test-out
135 $(make-target-directory
)
136 $(PERL
) gen-libm-test.pl
-u
$< -o
"$(objpfx)"
137 $(SHELL
) gen-libm-have-vector-test.sh
> $(objpfx
)libm-have-vector-test.h
140 $(objpfx
)test-float.o
: $(objpfx
)libm-test.stmp
141 $(objpfx
)test-ifloat.o
: $(objpfx
)libm-test.stmp
142 $(objpfx
)test-double.o
: $(objpfx
)libm-test.stmp
143 $(objpfx
)test-idouble.o
: $(objpfx
)libm-test.stmp
144 $(objpfx
)test-ldouble.o
: $(objpfx
)libm-test.stmp
145 $(objpfx
)test-ildoubl.o
: $(objpfx
)libm-test.stmp
148 CFLAGS-test-float.c
= -fno-inline
-ffloat-store
-fno-builtin
149 CFLAGS-test-double.c
= -fno-inline
-ffloat-store
-fno-builtin
150 CFLAGS-test-ldouble.c
= -fno-inline
-ffloat-store
-fno-builtin
151 CFLAGS-test-tgmath.c
= -fno-builtin
152 # The following testcase uses very long lines (>3 million), so it may take a
153 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
154 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
155 CFLAGS-test-tgmath2.c
= -fno-builtin
156 CFLAGS-test-tgmath-ret.c
= -fno-builtin
157 CFLAGS-test-powl.c
= -fno-builtin
158 CPPFLAGS-test-ifloat.c
= -U__LIBC_INTERNAL_MATH_INLINES
-D__FAST_MATH__ \
159 -DTEST_FAST_MATH
-fno-builtin
160 CPPFLAGS-test-idouble.c
= -U__LIBC_INTERNAL_MATH_INLINES
-D__FAST_MATH__ \
161 -DTEST_FAST_MATH
-fno-builtin
162 CPPFLAGS-test-ildoubl.c
= -U__LIBC_INTERNAL_MATH_INLINES
-D__FAST_MATH__ \
163 -DTEST_FAST_MATH
-fno-builtin
166 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
167 # for error handling in the -lm functions.
168 install-lib
+= libieee.a
169 non-lib.a
+= libieee.a
170 extra-objs
+= libieee.a ieee-math.o
175 # Run the math programs to automatically generate ULPs files.
178 run-regen-ulps
= $(test-wrapper-env
) \
180 $($*-ENV
) $(rtld-prefix
) $${run}
182 regen-ulps
: $(addprefix $(objpfx
),$(libm-tests
))
183 rm -f
$(objpfx
)ULPs
; rm -f
$(objpfx
)NewUlps
; \
184 cp
$(ulps-file
) $(objpfx
)libm-test-ulps
; \
186 echo
"Regenerating ULPs for $${run}"; \
187 $(run-regen-ulps
) -u
-o
$(objpfx
); \
188 cat
$(objpfx
)ULPs
>> $(objpfx
)libm-test-ulps
; \
191 $(PERL
) gen-libm-test.pl
-o
$(objpfx
) -n
-u
$(objpfx
)libm-test-ulps
; \
192 echo
"Automatic regeneration of ULPs complete."; \
193 echo
"Difference between the current baseline and the new baseline is:";\
194 diff
-urN
$(ulps-file
) $(objpfx
)NewUlps
; \
195 echo
"Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
198 @echo
"Automatic regeneration of ULPs requires perl."; \
202 # The generated sysd-rules file defines rules like this for sources
203 # coming from sysdeps/ directories. These rules find the generic sources.
204 define o-iterator-doit
205 $(objpfx
)m_
%$o: s_
%.c
$(before-compile
); $$(compile-command.c
)
207 object-suffixes-left
:= $(all-object-suffixes
)
208 include $(o-iterator
)
211 # This file defines the default _LIB_VERSION variable that controls
212 # the error return conventions for the math functions.
213 CPPFLAGS-s_lib_version.c
:= -D_POSIX_MODE
215 # We don't want the fdlibm code to use the inline math functions,
216 # only the fdlibm code.
217 math-CPPFLAGS
+= -D__NO_MATH_INLINES
-D__LIBC_INTERNAL_MATH_INLINES
219 ifneq ($(long-double-fcts
),yes
)
220 # The `double' and `long double' types are the same on this machine.
221 # We won't compile the `long double' code at all. Tell the `double' code
222 # to define aliases for the `FUNCl' names. To avoid type conflicts in
223 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
224 # `double' instead of `long double'.
225 math-CPPFLAGS
+= -DNO_LONG_DOUBLE
-D_Mlong_double_
=double
228 # The fdlibm code generates a lot of these warnings but is otherwise clean.
229 override CFLAGS
+= -Wno-uninitialized
231 # The -lieee library is actually an object file.
232 # The module just defines the _LIB_VERSION_ variable.
233 # It's not a library to make sure it is linked in instead of s_lib_version.o.
234 $(objpfx
)libieee.a
: $(objpfx
)ieee-math.o
236 $(patsubst %/,cd
% &&,$(objpfx
)) \
239 $(addprefix $(objpfx
),$(filter-out $(tests-static
),$(tests
))): $(libm
)
240 $(addprefix $(objpfx
),$(tests-static
)): $(objpfx
)libm.a
242 gmp-objs
= $(patsubst %,$(common-objpfx
)stdlib
/%.o
,\
243 add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
244 lshift rshift mp_clz_tab udiv_qrnnd inlines \
245 $(gmp-sysdep_routines
))
246 $(objpfx
)atest-exp
: $(gmp-objs
)
247 $(objpfx
)atest-sincos
: $(gmp-objs
)
248 $(objpfx
)atest-exp2
: $(gmp-objs
)
249 $(objpfx
)test-fenv-tls
: $(shared-thread-library
)