[gcc r12-2954] Do not enable DT_INIT_ARRAY/DT_FINI_ARRAY on uclinuxfdpiceabi

[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.

Diff:
---
 gcc/config.gcc | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 7001a79b823..d9bfbfdc0d2 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -851,8 +851,14 @@ 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
+  case $target in
+    *-*-*uclibc* | *-*-uclinuxfdpiceabi)
+      ;;
+    *)
+      # Linux targets always support .init_array.
+      gcc_cv_initfini_array=yes
+      ;;
+  esac
   ;;
 *-*-netbsd*)
   tm_p_file="${tm_p_file} netbsd-protos.h"