Enable JFR in our builds, ahead of upstream default.

Only enable JFR for JIT builds, as it is not supported with Zero.
Turn off JFR on x86 for now due to assert(SerializePageShiftCount == count) crash.
Explicitly list jfr.jar, default.jfc & profile.jfc in the spec file.
Introduce jfr_arches for architectures which support JFR.
Use sa_arches for libsaproc.so inclusion.
Move LTO handling to same location as other compiler flags handling.

java-1.8.0-openjdk.spec

@@ -60,6 +60,7 @@
 %global multilib_arches %{power64} sparc64 x86_64
 %global jit_arches      %{ix86} x86_64 sparcv9 sparc64 %{aarch64} %{power64}
 %global sa_arches       %{ix86} x86_64 sparcv9 sparc64 %{aarch64}
+%global jfr_arches      x86_64 sparcv9 sparc64 %{aarch64} ${power64}
 
 # By default, we build a debug build during main build on JIT architectures
 %if %{with slowdebug}
@@ -108,6 +109,12 @@
 %global ourcppflags %(echo %ourflags | sed -e 's|-fexceptions||')
 %global ourldflags %{__global_ldflags}
 
+# This package fails to build with LTO due to undefined symbols.  LTO
+# was disabled in OpenSuSE as well, but with no real explanation why
+# beyond the undefined symbols.  It really should be investigated further.
+# Disable LTO
+%define _lto_cflags %{nil}
+
 # With disabled nss is NSS deactivated, so NSS_LIBDIR can contain the wrong path
 # the initialization must be here. Later the pkg-config have buggy behavior
 # looks like openjdk RPM specific bug
@@ -245,7 +252,7 @@
 %global updatever       %(VERSION=%{whole_update}; echo ${VERSION##*u})
 # eg jdk8u60-b27 -> b27
 %global buildver        %(VERSION=%{version_tag}; echo ${VERSION##*-})
-%global rpmrelease      3
+%global rpmrelease      4
 # Define milestone (EA for pre-releases, GA ("fcs") for releases)
 # Release will be (where N is usually a number starting at 1):
 # - 0.N%%{?extraver}%%{?dist} for EA releases,
@@ -709,7 +716,7 @@ exit 0
 %{_jvmdir}/%{jredir -- %{?1}}/lib/%{archinstall}/libnet.so
 %{_jvmdir}/%{jredir -- %{?1}}/lib/%{archinstall}/libnio.so
 %{_jvmdir}/%{jredir -- %{?1}}/lib/%{archinstall}/libnpt.so
-%ifarch x86_64  %{ix86} %{aarch64}
+%ifarch %{sa_arches}
 %{_jvmdir}/%{jredir -- %{?1}}/lib/%{archinstall}/libsaproc.so
 %endif
 %{_jvmdir}/%{jredir -- %{?1}}/lib/%{archinstall}/libsctp.so
@@ -750,12 +757,20 @@ exit 0
 %{_jvmdir}/%{jredir -- %{?1}}/lib/ext/sunjce_provider.jar
 %{_jvmdir}/%{jredir -- %{?1}}/lib/ext/sunpkcs11.jar
 %{_jvmdir}/%{jredir -- %{?1}}/lib/ext/zipfs.jar
+%ifarch %{jfr_arches}
+%{_jvmdir}/%{jredir -- %{?1}}/lib/jfr.jar
+%{_jvmdir}/%{jredir -- %{?1}}/lib/jfr/default.jfc
+%{_jvmdir}/%{jredir -- %{?1}}/lib/jfr/profile.jfc
+%endif
 
 %dir %{_jvmdir}/%{jredir -- %{?1}}/lib/images
 %dir %{_jvmdir}/%{jredir -- %{?1}}/lib/images/cursors
 %dir %{_jvmdir}/%{jredir -- %{?1}}/lib/management
 %dir %{_jvmdir}/%{jredir -- %{?1}}/lib/cmm
 %dir %{_jvmdir}/%{jredir -- %{?1}}/lib/ext
+%ifarch %{jfr_arches}
+%dir %{_jvmdir}/%{jredir -- %{?1}}/lib/jfr
+%endif
 }
 
 %define files_devel() %{expand:
@@ -1644,11 +1659,6 @@ sed -e "s:@NSS_LIBDIR@:%{NSS_LIBDIR}:g" %{SOURCE11} > nss.cfg
 
 
 %build
-# This package fails to build with LTO due to undefined symbols.  LTO
-# was disabled in OpenSuSE as well, but with no real explanation why
-# beyond the undefined symbols.  It really shold be investigated further.
-# Disable LTO
-%define _lto_cflags %{nil}
 
 # How many CPU's do we have?
 export NUM_PROC=%(/usr/bin/getconf _NPROCESSORS_ONLN 2> /dev/null || :)
@@ -1696,6 +1706,9 @@ function buildjdk() {
     pushd ${outputdir}
 
     bash ${top_srcdir_abs_path}/configure \
+%ifarch %{jfr_arches}
+    --enable-jfr \
+%endif
 %ifnarch %{jit_arches}
     --with-jvm-variants=zero \
 %endif
@@ -2261,6 +2274,15 @@ require "copy_jdk_configs.lua"
 %endif
 
 %changelog
+* Fri Jul 03 2020 Andrew Hughes <gnu.andrew@redhat.com> - 1:1.8.0.262.b03-0.4.ea
+- Enable JFR in our builds, ahead of upstream default.
+- Only enable JFR for JIT builds, as it is not supported with Zero.
+- Turn off JFR on x86 for now due to assert(SerializePageShiftCount == count) crash.
+- Explicitly list jfr.jar, default.jfc & profile.jfc in the spec file.
+- Introduce jfr_arches for architectures which support JFR.
+- Use sa_arches for libsaproc.so inclusion.
+- Move LTO handling to same location as other compiler flags handling.
+
 * Wed Jul 01 2020 Jeff Law <law@redhat.com> - 1:1.8.0.262.b03-0.3.ea
 - Disable LTO