configure: fix detection of gdbus-codegen
"pkg-config --variable=gdbus_codegen gio-2.0" returns "gdbus-codegen", and it does not pass test -x (which does not walk the path). Meson 0.58.0 notices that something is iffy, as the dbus_vmstate1 assignment in tests/qtest/meson.build uses an empty string as the command, and fails very eloquently: ../tests/qtest/meson.build:92:2: ERROR: No program name specified. Use the "has" function instead of test -x, and fix the generation of config-host.mak since meson.build expects that GDBUS_CODEGEN is absent, rather than empty, if the tool is unavailable. Reported-by: Sebastian Mitterle <smitterl@redhat.com> Fixes: #178 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -3341,7 +3341,7 @@ if ! test "$gio" = "no"; then
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gio_cflags=$($pkg_config --cflags gio-2.0)
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gio_libs=$($pkg_config --libs gio-2.0)
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gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
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if [ ! -x "$gdbus_codegen" ]; then
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if ! has "$gdbus_codegen"; then
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gdbus_codegen=
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fi
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# Check that the libraries actually work -- Ubuntu 18.04 ships
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@ -5704,6 +5704,8 @@ if test "$gio" = "yes" ; then
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echo "CONFIG_GIO=y" >> $config_host_mak
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echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
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echo "GIO_LIBS=$gio_libs" >> $config_host_mak
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fi
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if test "$gdbus_codegen" != "" ; then
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echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
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fi
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echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
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