Bug#1060001: libgcc-s1: move libgcc_s.so.1 to /usr for DEP17

[Helmut Grohne <helmut@subdivi.de>]

Package: libgcc-s1
Version: 13.2.0-8
Tags: patch
User: helmutg@debian.org
Usertags: dep17

Hi Matthias,

for finalizing the /usr-merge transition via DEP17, we want to move all
aliased files to /usr. I'm attaching a patch that implements this for
libgcc_s.so.1 which is the only file from the gcc-13 source package
affected (+ multilibs). Since this change must not affect bookworm and
earlier, I've implemented it in a backports-compatible way.

Helmut

--- a/debian/rules2
+++ b/debian/rules2
@@ -971,17 +971,20 @@
 endif

 # PFL is the installation prefix with DEB_TARGET_GNU_TYPE attached for cross builds
-ifeq ($(DEB_CROSS),yes)
-  PFL		= $(PF)/$(DEB_TARGET_GNU_TYPE)
+PFL		= $(PF)
+# RPF is the base prefix or installation prefix with DEB_TARGET_GNU_TYPE attached for cross builds
+# DEP17: move to /usr in trixie and noble
+ifneq (,$(filter $(distrelease),jessie stretch buster bullseye bookworm precise trusty xenial bionic focal groovy hirsute impish jammy kinetic lunar mantic))
+  RPF           =
 else
-  PFL		= $(PF)
+  RPF           = $(PF)
 endif

-# RPF is the base prefix or installation prefix with DEB_TARGET_GNU_TYPE attached for cross builds
 ifeq ($(DEB_CROSS),yes)
+ifneq ($(DEB_STAGE),rtlibs)
+  PFL		= $(PF)/$(DEB_TARGET_GNU_TYPE)
   RPF		= $(PF)/$(DEB_TARGET_GNU_TYPE)
-else
-  RPF		=
+endif
 endif

 ifeq ($(with_multiarch_lib),yes)
@@ -1053,8 +1056,6 @@
 endif

 ifeq ($(DEB_STAGE)-$(DEB_CROSS),rtlibs-yes)
-  PFL		= $(PF)
-  RPF		=
   libdir	= lib/$(DEB_TARGET_MULTIARCH)
   usr_lib	= $(PF)/lib/$(DEB_TARGET_MULTIARCH)
 endif