From 8f2e1830f298f45d34cfdb4cffc8ce3b940a3990 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Fri, 19 May 2017 11:26:00 +0000 Subject: 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 , 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 . (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 $(common-objpfx)versions.stmp. --- ChangeLog | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 527e4e4776..ed4db8cf19 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,47 @@ +2017-05-19 Joseph Myers + + * scripts/versions.awk: Generate first-versions.h. + * sysdeps/ieee754/ldbl-opt/math-type-macros-double.h: Include + . + (LDOUBLE_cabsl_libm_version): Remove macro. + (LDOUBLE_cargl_libm_version): Likewise. + (LDOUBLE_cimagl_libm_version): Likewise. + (LDOUBLE_conjl_libm_version): Likewise. + (LDOUBLE_creall_libm_version): Likewise. + (LDOUBLE_cacosl_libm_version): Likewise. + (LDOUBLE_cacoshl_libm_version): Likewise. + (LDOUBLE_ccosl_libm_version): Likewise. + (LDOUBLE_ccoshl_libm_version): Likewise. + (LDOUBLE_casinl_libm_version): Likewise. + (LDOUBLE_csinl_libm_version): Likewise. + (LDOUBLE_casinhl_libm_version): Likewise. + (LDOUBLE_csinhl_libm_version): Likewise. + (LDOUBLE_catanl_libm_version): Likewise. + (LDOUBLE_catanhl_libm_version): Likewise. + (LDOUBLE_ctanl_libm_version): Likewise. + (LDOUBLE_ctanhl_libm_version): Likewise. + (LDOUBLE_cexpl_libm_version): Likewise. + (LDOUBLE_clogl_libm_version): Likewise. + (LDOUBLE_cprojl_libm_version): Likewise. + (LDOUBLE_csqrtl_libm_version): Likewise. + (LDOUBLE_cpowl_libm_version): Likewise. + (LDOUBLE_clog10l_libm_version): Likewise. + (LDOUBLE___clog10l_libm_version): Likewise. + (LDOUBLE_fdiml_libm_version): Likewise. + (LDOUBLE_fmaxl_libm_version): Likewise. + (LDOUBLE_fminl_libm_version): Likewise. + (LDOUBLE_ilogbl_libm_version): Likewise. + (LDOUBLE_nanl_libm_version): Likewise. + [!M_LIBM_NEED_COMPAT] (M_LIBM_NEED_COMPAT): Use + FIRST_VERSION_libm_* macros. + [!declare_mgen_libm_compat] (declare_mgen_libm_compat): Likewise. + * Makerules [$(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 * rt/Makefile (CFLAGS-mq_timedsend.c): New flag. -- cgit 1.4.1