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2017-05-19Also create and use ldbl-compat-choose.h.Joseph Myers1-0/+19
This patch makes the glibc build generate an additional header ldbl-compat-choose.h that defines LONG_DOUBLE_COMPAT_CHOOSE_* macros for each libc and libm symbol, which select one or the other of their arguments based on whether the symbol was added before a change to long double != double. The effect of this is that it is then possible to define a macro maybe_long_double_symbol that automatically acts as either long_double_symbol or weak_alias depending on when the symbol being defined was added. This can be used when building long double functions from type-generic templates. Thus, with this patch ldbl-opt no longer needs special long double implementations of each new libm function added using such a template, and the existing such implementations are removed. This is a step towards being able more generally to use common macros to create all the aliases needed for a libm function, so reducing the amount of special-case code needed in ldbl-opt and ldbl-64-128, and facilitating subsequently adding *f32 / *f64 / *f128 / *f32x / *f64x aliases to existing functions (where the set of aliases that a function should have may depend on the architecture in various ways). Tested with build-many-glibcs.py. Except for on powerpc64le-linux-gnu, installed stripped shared libraries are unchanged by the patch. powerpc64le-linux-gnu is the unique configuration which used ldbl-opt from the start rather than adding a new long double choice after originally only having had long double = double. The effect of the patch there is that various cases that previously used long_double_symbol unconditionally now use weak_alias instead, so .os files contain e.g. a symbol cabsl instead of cabsl@@GLIBC_2.17. The final dynamic symbols and versions in the resulting shared libraries are unchanged (ABI tests pass), as is the disassembly of the shared libraries, but the differences in the .os files still result in different .gnu_hash contents in libm.so; the differences are of no significance and logically using weak_alias is what's most appropriate in those cases. * scripts/versions.awk: Generate ldbl-compat-choose.h. * sysdeps/ieee754/ldbl-opt/math-type-macros-ldouble.h: Include <ldbl-compat-choose.h>. (maybe_long_double_symbol): New macro. [!declare_mgen_alias] (declare_mgen_alias): Use maybe_long_double_symbol. * sysdeps/ieee754/ldbl-opt/s_canonicalizel.c: Remove. * sysdeps/ieee754/ldbl-opt/s_fmaxmagl.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_fminmagl.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_nextdownl.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise. * Makerules [$(build-shared) = yes && !avoid-generated] (before-compile): Add $(common-objpfx)ldbl-compat-choose.h. [$(build-shared) = yes && !avoid-generated] ($(common-objpfx)ldbl-compat-choose.h): New target.
2017-05-19Create and use first-versions.h with macros for function symbol versions.Joseph Myers1-0/+17
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.
2017-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2015-01-02Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2014-01-01Update copyright notices with scripts/update-copyrightsAllan McRae1-1/+1
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers1-1/+1
2008-12-062008-12-05 Joseph Myers <joseph@codesourcery.com>Ulrich Drepper1-5/+3
Ulrich Drepper <drepper@redhat.com> * scripts/firstversion.awk: Use custom comparison function to compare version numbers. * scripts/versions.awk: Use sort invocation which can handle multi-digit sub-version numbers.
2005-03-23* scripts/versions.awk: No errors for GLIBC_PRIVATE.Roland McGrath1-1/+1
2005-03-22* Versions.def (libdl, librt): Add GLIBC_2.3.4 version.Roland McGrath1-7/+15
* scripts/versions.awk: Print all errors and die at the end. Use library name in versions array keys.
2004-12-22(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.Ulrich Drepper1-15/+7
2007-07-122.5-18.1Jakub Jelinek1-7/+15
2002-12-02* scripts/versions.awk: Don't pass -n flag to sort command.Roland McGrath1-1/+4
2002-02-07* scripts/versions.awk: Improve error message for missing version.Roland McGrath1-4/+10
Each version inherits from the last one only if they have the same nonnumeric prefix, i.e. GLIBC_x.y and GLIBC_x.z or FOO_x and FOO_y but not GLIBC_x and FOO_y. * scripts/firstversions.awk: Handle libraries that don't have each particular version named in the third column of shlib-versions.
2001-12-06Update.Ulrich Drepper1-1/+4
* string/tester.c: Add tests for strcasecmp and strncasecmp. * Versions.def (libc): Add GCC_3.0. __deregister_frame_info_bases, _Unwind_Find_FDE): Add for GCC_3.0.
2000-03-20* scripts/versions.awk: Fixed version renaming code to distinguishRoland McGrath1-8/+7
libraries properly.
2000-03-19* shlib-versions [USE_IN_LIBIO] (.*-.*-gnu-gnu*): Set earliestRoland McGrath1-3/+10
supported version for libc 0.2.90.libio to GLIBC_2.2. * Makeconfig (soversions.mk): Grok new third column in shlib-versions, and use it to emit new variable `map-firstversions'. * scripts/firstversions.awk: New file. * Makerules (Versions.all): Use scripts/firstversions.awk and the $(map-firstversions) value to generate a modified versions list that includes renames in "A = B" syntax for each version set earlier than the "earliest symbol version" named in shlib-versions. * scripts/versions.awk: Recognize "A = B" lines in the input to mean rename version set A to B in the output to the intermediate file. * scripts/abi-versions.awk: New file. * Makerules (abi-versions.h): New target, generated by that script. [$(versioning) = yes] (before-compile): Prepend abi-versions.h. * include/shlib-compat.h: New file, uses that generated header.
1999-11-15Update.Ulrich Drepper1-11/+7
* scripts/versions.awk: Don't expect to read predecessor versions, compute them. * Versions.def: Remove predecessors. They get now computed. 1999-11-14 Ulrich Drepper <drepper@cygnus.com> Patches by Franz Sirl <Franz.Sirl@lauterbach.com>.
1999-02-07Update.Ulrich Drepper1-2/+2
1999-02-06 Ulrich Drepper <drepper@cygnus.com> * Versions.def: Add versions for ld.so. * csu/Versions: Remove __libc_stack_end here. * elf/Versions: Split libc definitions in libc and ld.so definitions. * elf/Makefile (ld-map): Change to ld.so.map. * scripts/versions.awk: Recognize dot in library names. * ctype/ctype.h: Remove definitions of __tolower and __toupper. Don't use __tolower and __toupper in inline functions. Add optimizing macros for tolower and toupper. * ctype/ctype-extn.c (_tolower): Don't use __tolower. (_toupper): Don't use __toupper. * ctype/ctype.c (tolower): Don't use __tolower. (toupper): Don't use toupper. * nscd/cache.c (prune_cache): Correct printing of debugging messages. * resolv/Versions (libresolv): Export __ns_name_unpack and __ns_name_ntop. * resolv/res_comp.c: Rename ns_name_unpack to __ns_name_unpack and make it global. Change all users. Similar for ns_name_ntop. * resolv/nss_dns/dns-host.c: Don't use dn_expand when extracting in user-provided buffer. Use __ns_name_unpack and __ns_name_ntop directly to detect too small buffer. * stdio-common/Makefile (tests): Add scanf12. * stdio-common/scanf12.c: New file. * stdio-common/scanf12.input: New file. * stdio-common/vfscanf.c (__vfscanf): Handle +/- at beginning of floating-point correctly if the number is invalid. * stdio-common/vfscanf.c: Don't use non-reentrant multibyte conversion * stdio-common/printf_fphex.c: Likewise. * stdio-common/vfprintf.c: Likewise. See ChangeLog.9 for earlier changes.
1999-01-29Update.Ulrich Drepper1-2/+2
* scripts/versions.awk: Quote { in regexp.
1998-09-23Update.Ulrich Drepper1-2/+2
1998-09-23 13:52 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (all-subdirs): Add db. * Versions.def: Add definition for libdb1. * shlib-versions: Add definitions for libdb1. * db/Makefile (extra-libs): Replace by libdb1. (libdb-routines): Rename to libdb1-routines. (headers): Rename to db1-headers. (distribute): Add $(db1-headers). (install-others): Define to install symlink libdb.so.NN and the $(db1-headers). (CPPFLAGS): Add -USE_LIBDB1 Remove rules to build makedb. * db/Versions: Rename libdb to libdb1. * include/db.h: If USE_LIBDB1 is defined include db/db.h. * scripts/versions.awk: Recognize digits in library names. * db/btree/bt_open.c: Fix compiler warnings. * db/btree/bt_put.c: Likewise. * db/btree/bt_split.c: Likewise. * db/hash/hash.c: Likewise. * db/hash/hash_bigkey.c: Likewise. * db/recno/rec_close.c: Likewise.
1998-07-08Update.Ulrich Drepper1-0/+117
1998-07-08 22:18 Ulrich Drepper <drepper@cygnus.com> * elf/Versions: Add _dl_mcount_wrapper_check. * elf/dlfcn.h (DL_CALL_FCT): Don't test _dl_profile_map, simply use _dl_mcount_wrapper_check. * iconv/skeleton.c: Use DL_CALL_FCT, not _CALL_DL_FCT. * elf/dl-reloc.c (_dl_relocate_object): Don't declare using internal_function. * elf/ldsodefs.h: Likewise. * io/fcntl.h: Define SEEK_SET, SEEK_CUR, and SEEK_END. * libio/stdio.h: Make sure va_list is defined for X/Open. Define P_tmpdir for X/Open. * posix/regex.h: Fix typo. * posix/unistd.h: Define intptr_t if not already happened. Add pthread_atfork prototype. * sysdeps/generic/bits/types.h: Define __intptr_t. * sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/bits/mips/types.h: Likewise. * sysdeps/unix/sysv/linux/bits/sparc/sparc64/types.h: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/bits/types.h: Likewise. * sysdeps/wordsize-32/stdint.h: Don't define intptr_t if already done. * sysdeps/wordsize-64/stdint.h: Likewise. * posix/bits/posix1_lim.h: Define _POSIX_CLOCKRES_MIN. * signal/Makefile (headers): Add bits/sigthread.h. * signal/signal.h: Include bits/sigthread.h. * sysdeps/generic/bits/sigthread.h: New file. * stdlib/stdlib.h: Declare rand_r use __USE_POSIX. * sysdeps/generic/bits/confname.h: Define _PC_FILESIZEBITS. * sysdeps/posix/pathconf.c: Handle _PC_FILESIZEBITS. * sysdeps/unix/sysv/linux/alpha/fpathconf.c: New file. * sysdeps/unix/sysv/linux/alpha/pathconf.c: New file. * sysdeps/generic/bits/dlfcn.h: Define RTLD_LOCAL. * elf/rtld.c: Remove preloading and loadpath variables in SUID programs. * sysdeps/generic/dl-sysdep.c: Define unsetenv. * sysdeps/unix/sysv/linux/i386/dl-librecon.h: Define other envvar names. * sysdeps/unix/sysv/linux/bits/errno.h: Define ECANCELED. * sysdeps/unix/sysv/linux/bits/fcntl.h: Define O_RSYNC and O_DSYNC. Remove O_READ and O_WRITE definition. * sysdeps/unix/sysv/linux/bits/resource.h: Define RLIM_SAVED_MAX and RLIM_SAVED_CUR. * sysdeps/unix/sysv/linux/fstatvfs.h: Handle UFS filesystem. 1998-07-06 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makerules ($(common-objpfx)sysd-versions): Expect awk script in scripts directory. Pass move-if-change to awk. (common-generated): Add $(version-maps) and sysd-versions. * versions.awk: Moved to... * scripts/versions.awk: ... here. Use move-if-change to void touching unchanged files. Print "version-maps = ..." instead of "all-version-maps = ..." and without $(common-objpfx). Explain expected variable names. * Makefile (distribute): Updated. 1998-07-06 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * misc/getttyent.c (getttyent): Don't return with locked stream. * misc/mntent_r.c (__getmntent_r): Likewise. 1998-07-07 18:24 Ulrich Drepper <drepper@cygnus.com> * libio/fileops.c (_IO_do_write): Don't shrink wwrite buffer to zero if stream is line buffered. (_io_file_overflow): Likewise. * libio/libio.h (_IO_putc_unlocked): Make sure that for line-buffered streams writing '\n' flushes the string.
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