* remove workaround for no longer built mipsel
* remove libatomic workaround no longer needed with GCC 16
* remove workaround for fixed riscv64 toolchain bug
* reduce debug info on sh4
* workarounds to help alpha

diff -Nru monero-0.18.5.3+~0+20260428/debian/rules monero-0.18.5.3+~0+20260428/debian/rules
--- monero-0.18.5.3+~0+20260428/debian/rules	2026-10-04 18:15:10.000000000 +0300
+++ monero-0.18.5.3+~0+20260428/debian/rules	2026-10-04 18:26:32.000000000 +0300
@@ -10,26 +10,19 @@

 # reduce debugging information on 32bit archs
 # to avoid some FTBFS (2/3/4 GB address space limits on 32bit)
-ifneq (,$(filter $(DEB_HOST_ARCH), mipsel))
+ifneq (,$(filter $(DEB_HOST_ARCH), sh4))
 export DEB_CXXFLAGS_MAINT_APPEND = -g0
 else ifeq ($(DEB_HOST_ARCH_BITS),32)
 export DEB_CXXFLAGS_MAINT_APPEND = -g1
 endif

-# explicitly link with libatomic
-# to work around gcc bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81358>
-ifneq (,$(filter $(DEB_HOST_ARCH), armel m68k mips mipsel powerpc powerpcspe sh4))
-export DEB_LDFLAGS_MAINT_APPEND = -Wl,--no-as-needed -latomic -Wl,--as-needed
+# workarounds for alpha
+ifneq (,$(filter $(DEB_HOST_ARCH), alpha))
+export DEB_CXXFLAGS_MAINT_APPEND = -Os -g0
 endif

 DH_OPTIONS = -O--buildsystem=cmake

-# build with -O1 on riscv64 to avoid link error
-# relocation truncated to fit: R_RISCV_JAL against `mdb_assert_fail.constprop.0'
-ifneq (,$(filter $(DEB_HOST_ARCH), riscv64))
-export DEB_CXXFLAGS_MAINT_APPEND = -O1
-endif
-
 # detect if build targets experimental suite (or is a draft)
 DEB_SUITE_EXP = $(filter experimental% UNRELEASED,$(DEB_DISTRIBUTION))