configure: move OpenBSD W^X test to meson

The TCG option is now passed through to Meson.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -1594,10 +1594,6 @@ if [ "$ARCH" = "unknown" ]; then
   linux_user="no"
 fi
 
-if [ "$bsd_user" = "no" -a "$linux_user" = "no" -a "$softmmu" = "no" ] ; then
-  tcg="disabled"
-fi
-
 default_target_list=""
 deprecated_targets_list=ppc64abi32-linux-user,tilegx-linux-user,lm32-softmmu,unicore32-softmmu
 deprecated_features=""
@@ -6041,17 +6037,6 @@ if test "$mingw32" = "yes" ; then
     done
 fi
 
-# Disable OpenBSD W^X if available
-if test "$tcg" = "enabled" && test "$targetos" = "OpenBSD"; then
-    cat > $TMPC <<EOF
-    int main(void) { return 0; }
-EOF
-    wx_ldflags="-Wl,-z,wxneeded"
-    if compile_prog "" "$wx_ldflags"; then
-        QEMU_LDFLAGS="$QEMU_LDFLAGS $wx_ldflags"
-    fi
-fi
-
 qemu_confdir="$sysconfdir/$qemu_suffix"
 qemu_moddir="$libdir/$qemu_suffix"
 qemu_datadir="$datadir/$qemu_suffix"

meson.build

@@ -124,6 +124,7 @@ socket = []
 version_res = []
 coref = []
 iokit = []
+emulator_link_args = []
 cocoa = not_found
 hvf = not_found
 if targetos == 'windows'
@@ -146,6 +147,11 @@ elif targetos == 'haiku'
   socket = [cc.find_library('posix_error_mapper'),
             cc.find_library('network'),
             cc.find_library('bsd')]
+elif targetos == 'openbsd'
+  if not get_option('tcg').disabled() and target_dirs.length() > 0
+    # Disable OpenBSD W^X if available
+    emulator_link_args = cc.get_supported_link_arguments('-Wl,-z,wxneeded')
+  endif
 endif
 
 accelerators = []
@@ -1247,7 +1253,7 @@ foreach target : target_dirs
   c_args = ['-DNEED_CPU_H',
             '-DCONFIG_TARGET="@0@-config-target.h"'.format(target),
             '-DCONFIG_DEVICES="@0@-config-devices.h"'.format(target)]
-  link_args = []
+  link_args = emulator_link_args
 
   config_target += config_host
   target_inc = [include_directories('target' / config_target['TARGET_BASE_ARCH'])]