Tests: Add RunCMake.Emscripten case for a shared library

Tests/RunCMake/Emscripten/C-lib-shared.cmake

@@ -0,0 +1,6 @@
+enable_language(C)
+add_library(emscripten-test-lib SHARED libmod.c)
+
+add_executable(exec-lib-c module.c)
+target_compile_definitions(exec-lib-c PRIVATE __USE_LIBFUN)
+target_link_libraries(exec-lib-c PRIVATE emscripten-test-lib)

Tests/RunCMake/Emscripten/RunCMakeTest.cmake

@@ -57,6 +57,12 @@ foreach(_emscripten_toolchain IN LISTS _emscripten_toolchains)
     -DCMAKE_C_COMPILER=${c_comp}
   )
 
+  # Create a shared library and executable from .c sources.
+  run_toolchain(C-lib-shared
+    -DCMAKE_SYSTEM_NAME=Emscripten
+    -DCMAKE_C_COMPILER=${c_comp}
+  )
+
   run_cmake_with_options(C-WHOLE_ARCHIVE
     -DCMAKE_SYSTEM_NAME=Emscripten
     -DCMAKE_C_COMPILER=${c_comp}