CMake (MSVC): Make Zi default debug info flag

This restores the original debug-flag for CMake builds on Windows.

BREAKING_CHANGES.md

@@ -2,6 +2,37 @@
 
 # develop
 
+## Change
+
+The "Debug Information Format" flag has been changed to "/Zi" from "/Z7" when
+building JUCE on Windows using CMake.
+
+**Possible Issues**
+
+Some CI tooling (e.g., sscache) may experience issues writing debug information.
+Debug information will no longer be stored inside the object files during the
+build process.
+
+**Workaround**
+
+You can override the "Debug Information Format" flag with the
+"CMAKE_MSVC_DEBUG_INFORMATION_FORMAT" which is available under policy "CMP0141".
+
+This can be enabled at configuration time:
+    -DCMAKE_POLICY_DEFAULT_CMP0141=NEW
+    -DCMAKE_MSVC_DEBUG_INFORMATION_FORMAT=Embedded (for "/Z7")
+    or
+    -DCMAKE_MSVC_DEBUG_INFORMATION_FORMAT=ProgramDatabase (for "/Zi")
+
+**Rationale**
+
+The previous change to "/Z7" for the "Debug Information Format" flag caused
+build artefacts to drastically increase in size in some configurations, which
+could lead to build failures. In particular, when link-time code-generation is
+enabled, .obj files generated with the debug info mode set to "Z7" or "None"
+may be much larger than when using "Zi" instead.
+
+
 ## Change
 
 The AudioFormat class now only has one virtual createWriterFor member function:

extras/Build/CMake/JUCEHelperTargets.cmake

@@ -134,7 +134,7 @@ if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_COMPILER_FRONTEND_VARIA
     endif()
 
     if(needs_debug_flag)
-        target_compile_options(juce_recommended_config_flags INTERFACE $<${debug_config}:/Z7>)
+        target_compile_options(juce_recommended_config_flags INTERFACE $<${debug_config}:/Zi>)
     endif()
 elseif((CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
        OR (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")