guix/gnu/packages/patches/qemu-meson-compat.patch

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Fix a build failure that occurs with newer versions of Meson when
gdbus-codegen is unavailable.
Taken from upstream:
https://gitlab.com/qemu-project/qemu/-/commit/5ecfb76ccc056eb6127e44268e475827ae73b9e0
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -3341,7 +3341,7 @@ if ! test "$gio" = "no"; then
gio_cflags=$($pkg_config --cflags gio-2.0)
gio_libs=$($pkg_config --libs gio-2.0)
gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
- if [ ! -x "$gdbus_codegen" ]; then
+ if ! has "$gdbus_codegen"; then
gdbus_codegen=
fi
# Check that the libraries actually work -- Ubuntu 18.04 ships
@@ -5704,6 +5704,8 @@ if test "$gio" = "yes" ; then
echo "CONFIG_GIO=y" >> $config_host_mak
echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
echo "GIO_LIBS=$gio_libs" >> $config_host_mak
+fi
+if test "$gdbus_codegen" != "" ; then
echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
fi
echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak