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| author | Joseph Myers <joseph@codesourcery.com> | 2017-05-19 11:26:00 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2017-05-19 11:26:00 +0000 |
| commit | 8f2e1830f298f45d34cfdb4cffc8ce3b940a3990 (patch) | |
| tree | 2ef1718177270ba6b5d846641a49cbf79c0225c3 /ChangeLog | |
| parent | 332e01c6276e05ece5953007c98aa84725c4fda4 (diff) | |
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Create and use first-versions.h with macros for function symbol versions.
This patch arranges for the glibc build to generate a header
first-versions.h that defines macros for the earliest symbol version
in which each public symbol (GLIBC_[0-9]* symbol version, name only
uses C identifier characters) is available.
This is used in sysdeps/ieee754/ldbl-opt/math-type-macros-double.h to
replace the manually defined LDOUBLE_*_libm_version macros for various
functions defined using type-generic templates, the purpose of which
is to use in LONG_DOUBLE_COMPAT tests "was this function originally
added before glibc supported long double != double on this platform?".
As discussed in
<https://sourceware.org/ml/libc-alpha/2016-12/msg00246.html>, I expect
this to be useful more generally in reducing the amount of
special-case code needed in ldbl-opt and ldbl-64-128.
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.
* scripts/versions.awk: Generate first-versions.h.
* sysdeps/ieee754/ldbl-opt/math-type-macros-double.h: Include
<first-versions.h>.
(LDOUBLE_cabsl_libm_version): Remove macro.
(LDOUBLE_cargl_libm_version): Likewise.
(LDOUBLE_cimagl_libm_version): Likewise.
(LDOUBLE_conjl_libm_version): Likewise.
(LDOUBLE_creall_libm_version): Likewise.
(LDOUBLE_cacosl_libm_version): Likewise.
(LDOUBLE_cacoshl_libm_version): Likewise.
(LDOUBLE_ccosl_libm_version): Likewise.
(LDOUBLE_ccoshl_libm_version): Likewise.
(LDOUBLE_casinl_libm_version): Likewise.
(LDOUBLE_csinl_libm_version): Likewise.
(LDOUBLE_casinhl_libm_version): Likewise.
(LDOUBLE_csinhl_libm_version): Likewise.
(LDOUBLE_catanl_libm_version): Likewise.
(LDOUBLE_catanhl_libm_version): Likewise.
(LDOUBLE_ctanl_libm_version): Likewise.
(LDOUBLE_ctanhl_libm_version): Likewise.
(LDOUBLE_cexpl_libm_version): Likewise.
(LDOUBLE_clogl_libm_version): Likewise.
(LDOUBLE_cprojl_libm_version): Likewise.
(LDOUBLE_csqrtl_libm_version): Likewise.
(LDOUBLE_cpowl_libm_version): Likewise.
(LDOUBLE_clog10l_libm_version): Likewise.
(LDOUBLE___clog10l_libm_version): Likewise.
(LDOUBLE_fdiml_libm_version): Likewise.
(LDOUBLE_fmaxl_libm_version): Likewise.
(LDOUBLE_fminl_libm_version): Likewise.
(LDOUBLE_ilogbl_libm_version): Likewise.
(LDOUBLE_nanl_libm_version): Likewise.
[!M_LIBM_NEED_COMPAT] (M_LIBM_NEED_COMPAT): Use
FIRST_VERSION_libm_* macros.
[!declare_mgen_libm_compat] (declare_mgen_libm_compat): Likewise.
* Makerules [$(build-shared) = yes && !avoid-generated]
(before-compile): Add $(common-objpfx)first-versions.h.
[$(build-shared) = yes && !avoid-generated]
($(common-objpfx)first-versions.h): New target.
($(common-objpfx)sysd-versions): Depend on and change to rule for
building $(common-objpfx)versions.stmp.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 44 |
1 files changed, 44 insertions, 0 deletions
@@ -1,3 +1,47 @@ +2017-05-19 Joseph Myers <joseph@codesourcery.com> + + * scripts/versions.awk: Generate first-versions.h. + * sysdeps/ieee754/ldbl-opt/math-type-macros-double.h: Include + <first-versions.h>. + (LDOUBLE_cabsl_libm_version): Remove macro. + (LDOUBLE_cargl_libm_version): Likewise. + (LDOUBLE_cimagl_libm_version): Likewise. + (LDOUBLE_conjl_libm_version): Likewise. + (LDOUBLE_creall_libm_version): Likewise. + (LDOUBLE_cacosl_libm_version): Likewise. + (LDOUBLE_cacoshl_libm_version): Likewise. + (LDOUBLE_ccosl_libm_version): Likewise. + (LDOUBLE_ccoshl_libm_version): Likewise. + (LDOUBLE_casinl_libm_version): Likewise. + (LDOUBLE_csinl_libm_version): Likewise. + (LDOUBLE_casinhl_libm_version): Likewise. + (LDOUBLE_csinhl_libm_version): Likewise. + (LDOUBLE_catanl_libm_version): Likewise. + (LDOUBLE_catanhl_libm_version): Likewise. + (LDOUBLE_ctanl_libm_version): Likewise. + (LDOUBLE_ctanhl_libm_version): Likewise. + (LDOUBLE_cexpl_libm_version): Likewise. + (LDOUBLE_clogl_libm_version): Likewise. + (LDOUBLE_cprojl_libm_version): Likewise. + (LDOUBLE_csqrtl_libm_version): Likewise. + (LDOUBLE_cpowl_libm_version): Likewise. + (LDOUBLE_clog10l_libm_version): Likewise. + (LDOUBLE___clog10l_libm_version): Likewise. + (LDOUBLE_fdiml_libm_version): Likewise. + (LDOUBLE_fmaxl_libm_version): Likewise. + (LDOUBLE_fminl_libm_version): Likewise. + (LDOUBLE_ilogbl_libm_version): Likewise. + (LDOUBLE_nanl_libm_version): Likewise. + [!M_LIBM_NEED_COMPAT] (M_LIBM_NEED_COMPAT): Use + FIRST_VERSION_libm_* macros. + [!declare_mgen_libm_compat] (declare_mgen_libm_compat): Likewise. + * Makerules [$(build-shared) = yes && !avoid-generated] + (before-compile): Add $(common-objpfx)first-versions.h. + [$(build-shared) = yes && !avoid-generated] + ($(common-objpfx)first-versions.h): New target. + ($(common-objpfx)sysd-versions): Depend on and change to rule for + building $(common-objpfx)versions.stmp. + 2017-05-18 Adhemerval Zanella <adhemerval.zanella@linaro.org> * rt/Makefile (CFLAGS-mq_timedsend.c): New flag. |