Fix broken build when ./configure --without-gui is used

diff --git a/src/output/spv/automake.mk b/src/output/spv/automake.mk
index 78dae86130e49c3e19caa2133ad4fe06405378bc..37f98c3f131bd03e606439ed4fb511e30fb2e65e 100644 (file)
--- a/src/output/spv/automake.mk
+++ b/src/output/spv/automake.mk
@@ -1,5 +1,5 @@
 # PSPP - a program for statistical analysis.
-# Copyright (C) 2017 Free Software Foundation, Inc.
+# Copyright (C) 2019, 2020 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -39,6 +39,8 @@ src_output_liboutput_la_SOURCES += \
        src/output/spv/spvxml-helpers.c \
        src/output/spv/spvxml-helpers.h
 
+AM_CPPFLAGS += -Isrc
+
 light_binary_in = \
        src/output/spv/binary-parser-generator \
        src/output/spv/light-binary.grammar