Disable libunwind, lm_sensors in RHEL builds

mesa.spec

@@ -46,6 +46,11 @@
 %global with_vmware 1
 %endif
 
+%if !0%{?rhel}
+%global with_libunwind 1
+%global with_lmsensors 1
+%endif
+
 %ifarch %{valgrind_arches}
 %bcond_without valgrind
 %else
@@ -81,7 +86,9 @@ BuildRequires:  kernel-headers
 # SRPMs for each arch still have the same build dependencies. See:
 # https://bugzilla.redhat.com/show_bug.cgi?id=1859515
 BuildRequires:  pkgconfig(libdrm) >= 2.4.97
+%if 0%{?with_libunwind}
 BuildRequires:  pkgconfig(libunwind)
+%endif
 BuildRequires:  pkgconfig(expat)
 BuildRequires:  pkgconfig(zlib) >= 1.2.3
 BuildRequires:  pkgconfig(libzstd)
@@ -111,7 +118,9 @@ BuildRequires:  pkgconfig(xcb-randr)
 BuildRequires:  pkgconfig(xrandr) >= 1.3
 BuildRequires:  bison
 BuildRequires:  flex
+%if 0%{?with_lmsensors}
 BuildRequires:  lm_sensors-devel
+%endif
 %if 0%{?with_vdpau}
 BuildRequires:  pkgconfig(vdpau) >= 1.1
 %endif
@@ -397,6 +406,12 @@ export RUSTFLAGS="%build_rustflags"
   -Dvalgrind=%{?with_valgrind:enabled}%{!?with_valgrind:disabled} \
   -Dbuild-tests=false \
   -Dselinux=true \
+%if !0%{?with_libunwind}
+  -Dlibunwind=disabled \
+%endif
+%if !0%{?with_lmsensors}
+  -Dlmsensors=disabled \
+%endif
   -Dandroid-libbacktrace=disabled \
   %{nil}
 %meson_build