Remove macro flags that aren't supported in el8 rpm

Resolves: RHEL-12964

.rust.metadata

@@ -0,0 +1,2 @@
+9ad7bb54dc9572c103b855cdcc823addbb34d15d rustc-1.75.0-src.tar.xz
+55eaa32c99cc8ec970f2db2d340a605724589f9b wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz

macros.rust-toolset

@@ -34,20 +34,12 @@
 # -Copt-level: set optimization level (default: highest optimization level)
 # -Cdebuginfo: set debuginfo verbosity (default: full debug information)
 # -Ccodegen-units: set number of parallel code generation units (default: 1)
-# -Cforce-frame-pointers: force inclusion of frame pointers (default: enabled
-#       on x86_64 and aarch64 on Fedora 37+)
-#
-# Additionally, some linker flags are set which correspond to the default
-# Fedora compiler flags for hardening and for embedding package versions into
-# compiled binaries.
 #
 # ref. https://doc.rust-lang.org/rustc/codegen-options/index.html
 %build_rustflags %{shrink:
   -Copt-level=%rustflags_opt_level
   -Cdebuginfo=%rustflags_debuginfo
   -Ccodegen-units=%rustflags_codegen_units
-  %{expr:0%{?_include_frame_pointers} && ("%{_arch}" != "ppc64le" && "%{_arch}" != "s390x" && "%{_arch}" != "i386") ? "-Cforce-frame-pointers=yes" : ""}
-  %[0%{?_package_note_status} ? "-Clink-arg=%_package_note_flags" : ""]
 }
 
 # __cargo_common_opts: common command line flags for cargo

rust.spec

@@ -656,11 +656,13 @@ end}
 %{export_rust_env}
 
 %ifarch %{arm} %{ix86}
-# full debuginfo is exhausting memory; just do libstd for now
+# full debuginfo and compiler opts are exhausting memory; just do libstd for now
 # https://github.com/rust-lang/rust/issues/45854
 %define enable_debuginfo --debuginfo-level=0 --debuginfo-level-std=2
+%define enable_rust_opts --set rust.codegen-units-std=1
 %else
 %define enable_debuginfo --debuginfo-level=2
+%define enable_rust_opts --set rust.codegen-units=1 --set rust.lto=thin
 %endif
 
 # Some builders have relatively little memory for their CPU count.
@@ -727,8 +729,7 @@ test -r "%{profiler}"
   --disable-llvm-static-stdcpp \
   --disable-rpath \
   %{enable_debuginfo} \
-  --set rust.codegen-units=1 \
-  --set rust.lto=thin \
+  %{enable_rust_opts} \
   --set build.build-stage=2 \
   --set build.doc-stage=2 \
   --set build.install-stage=2 \