From 13a39886940331149173b25d6ebde0850668d8b9 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 8 Jun 2021 16:09:24 -0700 Subject: [PATCH] Always enable DT_INIT_ARRAY/DT_FINI_ARRAY on Linux DT_INIT_ARRAY/DT_FINI_ARRAY support was added to glibc 2.1 by commit fcf70d4114db9ff7923f5dfeb3fea6e2d623e5c2 Author: Ulrich Drepper Date: Sat Jul 24 19:45:13 1999 +0000 Update. 1999-07-24 Ulrich Drepper * elf/dl-fini.c: Handle DT_FINI_ARRAY. * elf/link.h (struct link_map): Remove l_init_running. Add l_runcount and l_initcount. * elf/dl-init.c: Handle DT_INIT_ARRAY. ... and added to binutils 2.12 by commit e9682144c14fc809af72bd6c0b8c69731d38679c Author: H.J. Lu Date: Mon Mar 4 20:40:48 2002 +0000 2002-03-04 H.J. Lu * config/obj-elf.c (special_section): Add .init_array, .fini_array and .preinit_array. * config/tc-ia64.h (ELF_TC_SPECIAL_SECTIONS): Remove .init_array and .fini_array. gcc/ PR target/100896 * config.gcc (gcc_cv_initfini_array): Set to yes for Linux and GNU targets. * doc/install.texi: Require glibc 2.1 and binutils 2.12 for Linux and GNU targets. --- gcc/config.gcc | 2 ++ gcc/doc/install.texi | 3 +++ 2 files changed, 5 insertions(+) diff --git a/gcc/config.gcc b/gcc/config.gcc index 6833a6c..4dc4fe0 100644 --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -848,6 +848,8 @@ case ${target} in tmake_file="${tmake_file} t-glibc" target_has_targetcm=yes target_has_targetdm=yes + # Linux targets always support .init_array. + gcc_cv_initfini_array=yes ;; *-*-netbsd*) tm_p_file="${tm_p_file} netbsd-protos.h" diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 591ccaa..94b167a 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -4126,6 +4126,9 @@ supported, so @option{--enable-threads=dce} does not work. @end html @anchor{x-x-linux-gnu} @heading *-*-linux-gnu +The @code{.init_array} and @code{.fini_array} sections are enabled +unconditionally which requires at least glibc 2.1 and binutils 2.12. + Versions of libstdc++-v3 starting with 3.2.1 require bug fixes present in glibc 2.2.5 and later. More information is available in the libstdc++-v3 documentation. -- 2.7.4