Hard-code ld.so paths for all architectures

Vaguely based on Fedora commit 7749ea58a9e2198f830d6eb8b162344aaf8acb84.

Co-authored-by: Tulio Magno Quites Machado Filho <tuliom@redhat.com>
Related: RHEL-65334

glibc.spec

@@ -199,6 +199,36 @@ Source11: parse-SUPPORTED.py
 Source12: ChangeLog.old
 Source13: nscd-sysusers.conf
 
+# ABI-specific program interpreter name.  Used for debuginfo
+# extraction (wrap-find-debuginfo.sh) and smoke testing ($run_ldso below).
+%ifarch %{ix86}
+%global glibc_ldso /lib/ld-linux.so.2
+%endif
+%ifarch aarch64
+%global glibc_ldso /lib/ld-linux-aarch64.so.1
+%endif
+%ifarch ppc
+%global glibc_ldso /lib/ld.so.1
+%endif
+%ifarch ppc64
+%global glibc_ldso /lib64/ld64.so.1
+%endif
+%ifarch ppc64le
+%global glibc_ldso /lib64/ld64.so.2
+%endif
+%ifarch riscv64
+%global glibc_ldso /lib/ld-linux-riscv64-lp64d.so.1
+%endif
+%ifarch s390
+%global glibc_ldso /lib/ld.so.1
+%endif
+%ifarch s390x
+%global glibc_ldso /lib/ld64.so.1
+%endif
+%ifarch x86_64 x86_64_v2 x86_64_v3 x86_64_v4
+%global glibc_ldso /lib64/ld-linux-x86-64.so.2
+%endif
+
 ######################################################################
 # Activate the wrapper script for debuginfo generation, by rewriting
 # the definition of __debug_install_post.
@@ -210,7 +240,7 @@ local original = rpm.expand("%{macrobody:__debug_install_post}")
 -- Avoid embedded newlines that confuse the macro definition.
 original = original:match("^%s*(.-)%s*$"):gsub("\\\n", "")
 rpm.define("__debug_install_post bash " .. wrapper
-  .. " " .. sysroot .. " " .. original)
+  .. " " .. sysroot .. " %{glibc_ldso} " .. original)
 }
 
 # sysroot package support.  These contain arch-specific packages, so
@@ -2785,13 +2815,7 @@ echo ====================PLT RELOCS LIBC.SO==============
 readelf -Wr %{glibc_sysroot}/%{_lib}/libc-*.so | sed -n -e "$PLTCMD"
 echo ====================PLT RELOCS END==================
 
-# Obtain a way to run the dynamic loader.  Avoid matching the symbolic
+run_ldso="%{glibc_sysroot}/%{glibc_ldso} --library-path %{glibc_sysroot}/%{_lib}"
-# link and then pick the first loader (although there should be only
-# one).  Use -maxdepth 2 to avoid descending into the /sys-root/
-# sub-tree.  See wrap-find-debuginfo.sh.
-ldso_path="$(find %{glibc_sysroot}/ -maxdepth 2 -regextype posix-extended \
-  -regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f | LC_ALL=C sort | head -n1)"
-run_ldso="$ldso_path --library-path %{glibc_sysroot}/%{_lib}"
 
 # Show the auxiliary vector as seen by the new library
 # (even if we do not perform the valgrind test).

wrap-find-debuginfo.sh

@@ -40,21 +40,13 @@ trap cleanup 0
 
 sysroot_path="$1"
 shift
+# Resolve symbolic link, so that the activities below only alter the
+# file it points to.
+ldso_path="$(readlink -f "$sysroot_path/$1")"
+shift
 script_path="$1"
 shift
 
-# See ldso_path setting in glibc.spec.
-ldso_path=
-for ldso_candidate in `find "$sysroot_path" -maxdepth 2 \
-  -regextype posix-extended -regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f` ; do
-    if test -z "$ldso_path" ; then
-	ldso_path="$ldso_candidate"
-    else
-	echo "error: multiple ld.so candidates: $ldso_path, $ldso_candidate"
-	exit 1
-    fi
-done
-
 # libc.so.6 always uses this name, so it is simpler to locate.
 libc_path=`find "$sysroot_path" -name libc.so.6`