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-rw-r--r--src/require-config.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/require-config.h b/src/require-config.h
new file mode 100644
index 000000000..7c7ef0552
--- /dev/null
+++ b/src/require-config.h
@@ -0,0 +1,3 @@
+#ifndef PACKAGE_TARNAME /* random symbol defined by config.h */
+# error "Must #include config.h (ifdef HAVE_CONFIG_H) before anything else."
+#endif