--enable-initfini-array should be enabled for cross compiler to all *-*-linux* and *-*-gnu* targets.
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>: https://gcc.gnu.org/g:13a39886940331149173b25d6ebde0850668d8b9 commit r12-1328-g13a39886940331149173b25d6ebde0850668d8b9 Author: H.J. Lu <hjl.tools@gmail.com> Date: Tue Jun 8 16:09:24 2021 -0700 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 <drepper@redhat.com> Date: Sat Jul 24 19:45:13 1999 +0000 Update. 1999-07-24 Ulrich Drepper <drepper@cygnus.com> * 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 <hjl.tools@gmail.com> Date: Mon Mar 4 20:40:48 2002 +0000 2002-03-04 H.J. Lu <hjl@gnu.org> * 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.
Fixed for GCC 12.
The master branch has been updated by Christophe Lyon <clyon@gcc.gnu.org>: https://gcc.gnu.org/g:9c560cf23996271ee26dfc4a1d8484b85173cd12 commit r12-2954-g9c560cf23996271ee26dfc4a1d8484b85173cd12 Author: Christophe Lyon <christophe.lyon@foss.st.com> Date: Tue Aug 17 12:59:26 2021 +0000 Do not enable DT_INIT_ARRAY/DT_FINI_ARRAY on uclinuxfdpiceabi Commit r12-1328 enabled DT_INIT_ARRAY/DT_FINI_ARRAY for all Linux targets, but this does not work for arm-none-uclinuxfdpiceabi: it makes all the execution tests fail. This patch restores the original behavior for uclinuxfdpiceabi. 2021-08-12 Christophe Lyon <christophe.lyon@foss.st.com> gcc/ PR target/100896 * config.gcc (gcc_cv_initfini_array): Leave undefined for uclinuxfdpiceabi targets.
In gcc/acinclude.m4:285, if cross-compiling, (`if test "x${build}" = "x${target}" && test "x${build}" = "x${host}"; then `) will not be taken. else case "${target}" in aarch64*-linux-gnu*) # AArch64 postdates glibc support for .init_array/.fini_array, # so we don't need the preprocessor test above. gcc_cv_initfini_array=yes ;; *) AC_MSG_CHECKING(cross compile... guessing) gcc_cv_initfini_array=no ;; esac fi]) On non-aarch64, `gcc_cv_initfini_array=no` will run, `HAVE_INITFINI_ARRAY_SUPPORT` will therefore be 0. compilers/powerpc64le-linux-gnu/gcc/gcc/auto-host.h 1578:#define HAVE_INITFINI_ARRAY_SUPPORT 0 compilers/powerpc64le-linux-gnu/gcc/gcc/config.status 1257:D["HAVE_INITFINI_ARRAY_SUPPORT"]=" 0" compilers/powerpc64le-linux-gnu/gcc/gcc/config.log 6900:| #define HAVE_INITFINI_ARRAY_SUPPORT 0 7169:| #define HAVE_INITFINI_ARRAY_SUPPORT 0 7484:| #define HAVE_INITFINI_ARRAY_SUPPORT 0 8557:#define HAVE_INITFINI_ARRAY_SUPPORT 0 The built GCC will use the legacy .ctors % many=/tmp/glibc-many % cat a.c __attribute__ ((constructor)) static int foo (void) { return 42; } % /tmp/glibc-many/install/compilers/powerpc64le-linux-gnu/bin/powerpc64le-glibc-linux-gnu-gcc -c a.c && readelf -WS a.o | egrep 'ctors|init_array' [ 4] .ctors PROGBITS 0000000000000000 000070 000008 00 WA 0 0 8 [ 5] .rela.ctors RELA 0000000000000000 000218 000018 18 I 10 4 8 --- Noticed the problem when using scripts/build-many-glibcs.py built GCC (cd ~/Dev/glibc) scripts/build-many-glibcs.py /tmp/glibc-many checkout --shallow scripts/build-many-glibcs.py /tmp/glibc-many host-libraries scripts/build-many-glibcs.py /tmp/glibc-many compilers powerpc64le-linux-gnu --keep all
Ah, ok, my /tmp/glibc-many/src/gcc is at releases/gcc-11 while the fix is for 12.0? Anyway, you may want to clean up gcc/acinclude.m4