From 96a63aeb3d6658b837523fee0df25300622e1dd0 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 7 Oct 2021 15:08:18 +0200
Subject: [PATCH] configure, meson: move remaining HAVE_* compiler tests to
 Meson
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

Remove some special cases by moving them to Meson.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20211007130829.632254-8-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 configure   | 37 -------------------------------------
 meson.build | 19 ++++++++++++++++++-
 2 files changed, 18 insertions(+), 38 deletions(-)

diff --git a/configure b/configure
index 6efea3cfc6..e78f58978f 100755
--- a/configure
+++ b/configure
@@ -2403,18 +2403,6 @@ else
   l2tpv3=no
 fi
 
-cat > $TMPC <<EOF
-#include <sys/mman.h>
-int main(int argc, char *argv[]) {
-    return mlockall(MCL_FUTURE);
-}
-EOF
-if compile_prog "" "" ; then
-  have_mlockall=yes
-else
-  have_mlockall=no
-fi
-
 #########################################
 # vhost interdependencies and host support
 
@@ -3842,21 +3830,6 @@ if test "$fortify_source" != "no"; then
   fi
 fi
 
-##########################################
-# check if struct fsxattr is available via linux/fs.h
-
-have_fsxattr=no
-cat > $TMPC << EOF
-#include <linux/fs.h>
-struct fsxattr foo;
-int main(void) {
-  return 0;
-}
-EOF
-if compile_prog "" "" ; then
-    have_fsxattr=yes
-fi
-
 ##########################################
 # check for usable membarrier system call
 if test "$membarrier" = "yes"; then
@@ -4358,13 +4331,6 @@ if test "$gdbus_codegen" != "" ; then
 fi
 echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
 
-# Work around a system header bug with some kernel/XFS header
-# versions where they both try to define 'struct fsxattr':
-# xfs headers will not try to redefine structs from linux headers
-# if this macro is set.
-if test "$have_fsxattr" = "yes" ; then
-    echo "HAVE_FSXATTR=y" >> $config_host_mak
-fi
 if test "$xen" = "enabled" ; then
   echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
   echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
@@ -4569,9 +4535,6 @@ fi
 if test "$parallels" = "yes" ; then
   echo "CONFIG_PARALLELS=y" >> $config_host_mak
 fi
-if test "$have_mlockall" = "yes" ; then
-  echo "HAVE_MLOCKALL=y" >> $config_host_mak
-fi
 
 if test "$plugins" = "yes" ; then
     echo "CONFIG_PLUGIN=y" >> $config_host_mak
diff --git a/meson.build b/meson.build
index bdcedf2eef..e8e728bf72 100644
--- a/meson.build
+++ b/meson.build
@@ -1601,6 +1601,23 @@ config_host_data.set('CONFIG_SPLICE', cc.links(gnu_source_prefix + '''
     return 0;
   }'''))
 
+config_host_data.set('HAVE_MLOCKALL', cc.links(gnu_source_prefix + '''
+  #include <sys/mman.h>
+  int main(int argc, char *argv[]) {
+    return mlockall(MCL_FUTURE);
+  }'''))
+
+# Work around a system header bug with some kernel/XFS header
+# versions where they both try to define 'struct fsxattr':
+# xfs headers will not try to redefine structs from linux headers
+# if this macro is set.
+config_host_data.set('HAVE_FSXATTR', cc.links('''
+  #include <linux/fs.h>'
+  struct fsxattr foo;
+  int main(void) {
+    return 0;
+  }'''))
+
 # Some versions of Mac OS X incorrectly define SIZE_MAX
 config_host_data.set('HAVE_BROKEN_SIZE_MAX', not cc.compiles('''
     #include <stdint.h>
@@ -1625,7 +1642,7 @@ foreach k, v: config_host
     config_host_data.set('HOST_' + v.to_upper(), 1)
   elif strings.contains(k)
     config_host_data.set_quoted(k, v)
-  elif k.startswith('CONFIG_') or k.startswith('HAVE_')
+  elif k.startswith('CONFIG_')
     config_host_data.set(k, v == 'y' ? 1 : v)
   endif
 endforeach