configure: write EXTRA_CFLAGS for all sub-Makefiles

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/configure b/configure
index c9feb1a..0fd2838 100755
--- a/configure
+++ b/configure
@@ -2090,6 +2090,7 @@
 }
 
 write_target_makefile() {
+  echo "EXTRA_CFLAGS=$target_cflags"
   if test -n "$target_cc"; then
     echo "CC=$target_cc"
     echo "CCAS=$target_ccas"
@@ -2118,6 +2119,7 @@
 }
 
 write_container_target_makefile() {
+  echo "EXTRA_CFLAGS=$target_cflags"
   if test -n "$container_cross_cc"; then
     echo "CC=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
     echo "CCAS=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
@@ -2258,7 +2260,6 @@
         echo "# Automatically generated by configure - do not modify" > $config_mak
         echo "TOPSRC_DIR=$source_path" >> $config_mak
         echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_mak
-        echo "EXTRA_CFLAGS=$target_cflags" >> $config_mak
         write_target_makefile >> $config_mak
     fi
 fi
@@ -2269,7 +2270,6 @@
     config_mak=pc-bios/vof/config.mak
     echo "# Automatically generated by configure - do not modify" > $config_mak
     echo "SRC_DIR=$source_path/pc-bios/vof" >> $config_mak
-    echo "EXTRA_CFLAGS=$target_cflags" >> $config_mak
     write_target_makefile >> $config_mak
 fi
 
@@ -2289,7 +2289,6 @@
     config_mak=pc-bios/s390-ccw/config-host.mak
     echo "# Automatically generated by configure - do not modify" > $config_mak
     echo "SRC_PATH=$source_path/pc-bios/s390-ccw" >> $config_mak
-    echo "EXTRA_CFLAGS=$target_cflags" >> $config_mak
     write_target_makefile >> $config_mak
     # SLOF is required for building the s390-ccw firmware on s390x,
     # since it is using the libnet code from SLOF for network booting.
@@ -2604,7 +2603,6 @@
   if test $got_cross_cc = yes; then
       mkdir -p tests/tcg/$target
       echo "QEMU=$PWD/$qemu" >> $config_target_mak
-      echo "EXTRA_CFLAGS=$target_cflags" >> $config_target_mak
       echo "run-tcg-tests-$target: $qemu\$(EXESUF)" >> $makefile
       tcg_tests_targets="$tcg_tests_targets $target"
   fi