Re-enable normal Fedora hardening macros

We previously disabled the hardened build macros because they broke
static linking. This is now resolved, so we can use them as is, which in
turn ensures ksmctl gets linked correctly.

While doing this it is not neccessary to pass -pie in ldflags, as we are
already giving the --enable-pie configure option. This lets us move
setting  of linker/compiler flags into the common run_configure
function, rather than duplicating them for static & dynamic builds

Finally, even though QEMU sets _FORTIFY_SOURCE itself, there's no reason
to strip it from the RPM provided build flags - it is harmless for it to
appear twice on compiler args. This ensures ksmctl.c gets fortified.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

qemu.spec

@@ -89,10 +89,6 @@ Requires: %{name}-block-nfs = %{epoch}:%{version}-%{release}     \
 Requires: %{name}-block-ssh = %{epoch}:%{version}-%{release}
 %endif
 
-# Temp hack for https://bugzilla.redhat.com/show_bug.cgi?id=1343892
-# We'll manually turn on hardened build later in this spec
-%undefine _hardened_build
-
 # Release candidate version tracking
 # global rcver rc3
 %if 0%{?rcver:1}
@@ -104,7 +100,7 @@ Requires: %{name}-block-ssh = %{epoch}:%{version}-%{release}
 Summary: QEMU is a FAST! processor emulator
 Name: qemu
 Version: 2.11.1
-Release: 1%{?rcrel}%{?dist}
+Release: 2%{?rcrel}%{?dist}
 Epoch: 2
 License: GPLv2 and BSD and MIT and CC-BY
 URL: http://www.qemu.org/
@@ -941,9 +937,6 @@ This package provides the system emulator for NIOS2.
 
 %build
 
-# QEMU already knows how to set _FORTIFY_SOURCE
-%global optflags %(echo %{optflags} | sed 's/-Wp,-D_FORTIFY_SOURCE=2//')
-
 # drop -g flag to prevent memory exhaustion by linker
 %ifarch s390
 %global optflags %(echo %{optflags} | sed 's/-g//')
@@ -1064,6 +1057,12 @@ run_configure() {
         --enable-tcg-interpreter \
 %endif
         --enable-trace-backend=$tracebackends \
+%ifnarch aarch64
+        --extra-ldflags="$extraldflags -Wl,-z,relro -Wl,-z,now" \
+%else
+        --extra-ldflags="$extraldflags" \
+%endif
+        --extra-cflags="%{optflags}" \
         "$@" || cat config.log
 }
 
@@ -1071,12 +1070,6 @@ mkdir build-dynamic
 pushd build-dynamic
 
 run_configure \
-%ifnarch aarch64
-    --extra-ldflags="$extraldflags -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -pie -Wl,-z,relro -Wl,-z,now" \
-%else
-    --extra-ldflags="$extraldflags -specs=/usr/lib/rpm/redhat/redhat-hardened-ld" \
-%endif
-    --extra-cflags="%{optflags} -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1" \
     --target-list="$dynamic_targets" \
     --enable-pie \
     --enable-modules \
@@ -1101,12 +1094,6 @@ mkdir build-static
 pushd build-static
 
 run_configure \
-%ifnarch aarch64
-    --extra-ldflags="$extraldflags -Wl,-z,relro -Wl,-z,now" \
-%else
-    --extra-ldflags="$extraldflags" \
-%endif
-    --extra-cflags="%{optflags}" \
     --target-list="$static_targets" \
     --static \
     --disable-pie \
@@ -1983,6 +1970,11 @@ getent passwd qemu >/dev/null || \
 
 
 %changelog
+* Mon Mar 19 2018 Daniel P. Berrangé <berrange@redhat.com> - 2:2.11.1-2
+- Re-enable normal hardened build macros to fix ksmctl.c hardening
+- Don't strip _FORTIFY_SOURCE from compiler flags
+- Don't pass -pie as an extra ldflags when we use --enable-pie
+
 * Wed Feb 28 2018 Cole Robinson <crobinso@redhat.com> - 2:2.11.1-1
 - Rebase to qemu 2.11.1 bugfix release