configure: pass -Wl,-z,notext to the linker on 32bit Linux and BSD.

This avoids relocations issues, as explained by
@xavierleroy #9800 (comment)

Patch is adapted from @glondu
https://salsa.debian.org/ocaml-team/ocaml/-/blob/2f4a827125dcf79e2b6a193de69b018379bae836/debian/patches/0006-Disable-DT_TEXTREL-warnings-on-Linux-i386.patch

Co-Authored-By: Stephane Glondu <steph@glondu.net>

configure.ac

@@ -1196,6 +1196,15 @@ AS_CASE([$arch],
        [common_cflags="-no-pie $common_cflags"],
     [])])
 
+# Disable DT_TEXTREL warnings on Linux and BSD i386
+# See https://github.com/ocaml/ocaml/issues/9800
+
+AS_CASE(["$system"],
+  [linux_elf|bsd_elf],
+    [mksharedlib="$mksharedlib -Wl,-z,notext"
+    mkmaindll="$mkmaindll -Wl,-z,notext"],
+  [])
+
 # Assembler
 
 AS_IF([test -n "$target_alias"],