Include RUSTFLAGS in %set_build_flags

Resolves: https://bugzilla.redhat.com/2167183

macros

@@ -86,12 +86,15 @@
 # have not been set already.  RPM_OPT_FLAGS and RPM_LD_FLAGS have already
 # been set implicitly at the start of the %%build section.
 # LT_SYS_LIBRARY_PATH is used by libtool script.
+# RUSTFLAGS is only set when rust-packaging which defines %%{build_rustflags} is
+# available.
 %set_build_flags \
   CFLAGS="${CFLAGS:-%{build_cflags}}" ; export CFLAGS ; \
   CXXFLAGS="${CXXFLAGS:-%{build_cxxflags}}" ; export CXXFLAGS ; \
   FFLAGS="${FFLAGS:-%{build_fflags}}" ; export FFLAGS ; \
   FCFLAGS="${FCFLAGS:-%{build_fflags}}" ; export FCFLAGS ; \
-  VALAFLAGS="${VALAFLAGS:-%{build_valaflags}}" ; export VALAFLAGS ; \
+  VALAFLAGS="${VALAFLAGS:-%{build_valaflags}}" ; export VALAFLAGS ;%{?build_rustflags:
+  RUSTFLAGS="${RUSTFLAGS:-%{build_rustflags}}" ; export RUSTFLAGS ;} \
   LDFLAGS="${LDFLAGS:-%{build_ldflags}}" ; export LDFLAGS ; \
   LT_SYS_LIBRARY_PATH="${LT_SYS_LIBRARY_PATH:-%_libdir:}" ; export LT_SYS_LIBRARY_PATH ; \
   CC="${CC:-%{__cc}}" ; export CC ; \

redhat-rpm-config.spec

@@ -4,7 +4,7 @@
 # 2) When making changes, increment the version (in baserelease) by 1.
 #    rpmdev-bumpspec and other tools update the macro below, which is used
 #    in Version: to get the desired effect.
-%global baserelease 252
+%global baserelease 253
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
@@ -252,6 +252,10 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora/srpm forge.lua
 %doc buildflags.md
 
 %changelog
+* Tue Feb 28 2023 Maxwell G <gotmax@e.email> - 253-1
+- Include RUSTFLAGS in %%set_build_flags
+- Fixes: rhbz#2167183
+
 * Tue Feb 28 2023 Tom Stellard <tstellar@redhat.com> - 252-1
 - Rename _pkg_extra_* macros to _distro_extra_*