1 files changed, 27 insertions, 0 deletions
diff --git a/toolkit/components/telemetry/tests/modules-test.cpp b/toolkit/components/telemetry/tests/modules-test.cpp
new file mode 100644
index 0000000000..c82d3f497d
--- /dev/null
+++ b/toolkit/components/telemetry/tests/modules-test.cpp
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*
+ * This source file is used to build different shared libraries:
+ *
+ *  - libmodules-test; it is automatically built by our build system (see the
+ *    moz.build in the same directory as this file);
+ *
+ *  - testUnicodePDB32.dll and testUnicodePDB64.dll; they can be built by
+ * compiling this source file using MSVC and setting the target name to be
+ * "libmodμles", then renaming the resulting file:
+ *      cl /Os /Zi modules-test.cpp /LINK /DLL /OUT:libmodμles.dll \
+ *        /nodefaultlib /entry:nothing /opt:ref
+ *      copy libmodμles.dll testUnicodePDB*ARCH*.dll
+ *
+ *  - testNoPDB32.dll and testNoPDB64.dll; they can be built by compiling this
+ *    file using MSVC, without enabling generation of a PDB:
+ *      cl /Os modules-test.cpp /LINK /DLL /OUT:testNoPDB*ARCH*.dll \
+ *        /nodefaultlib /entry:nothing
+ *
+ * Clearly, for testUnicodePDB and testNoPDB both a 32-bit and a 64-bit version
+ * have to be compiled, using the 32-bit and 64-bit MSVC toolchains.
+ *
+ */
+
+void nothing() {}