cmake: Add flags for reproducible builds on Windows

Compiler and linker flags for reproducible builds on Windows were
omitted from the recent CMake rework in error. This commit adds those
flags back.

cmake/windows/compilerconfig.cmake

@@ -33,8 +33,15 @@ if(CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION VERSION_LESS 10.0.20348)
                       "Please download and install the most recent Windows SDK.")
 endif()
 
+set(_obs_msvc_c_options /Brepro /MP /permissive- /Zc:__cplusplus /Zc:preprocessor)
+
+set(_obs_msvc_cpp_options /Brepro /MP /permissive- /Zc:__cplusplus /Zc:preprocessor)
+
 add_compile_options(
-  /W3 /utf-8 "$<$<COMPILE_LANG_AND_ID:C,MSVC>:/MP>" "$<$<COMPILE_LANG_AND_ID:CXX,MSVC>:/MP>"
+  /W3
+  /utf-8
+  "$<$<COMPILE_LANG_AND_ID:C,MSVC>:${_obs_msvc_c_options}>"
+  "$<$<COMPILE_LANG_AND_ID:CXX,MSVC>:${_obs_msvc_cpp_options}>"
   "$<$<COMPILE_LANG_AND_ID:C,Clang>:${_obs_clang_c_options}>"
   "$<$<COMPILE_LANG_AND_ID:CXX,Clang>:${_obs_clang_cxx_options}>")
 
@@ -42,7 +49,7 @@ add_compile_definitions(UNICODE _UNICODE _CRT_SECURE_NO_WARNINGS _CRT_NONSTDC_NO
                         $<$<CONFIG:DEBUG>:_DEBUG>)
 
 add_link_options("$<$<NOT:$<CONFIG:Debug>>:/OPT\:REF>" "$<$<CONFIG:Debug>:/INCREMENTAL\:NO>"
-                 "$<$<CONFIG:RelWithDebInfo>:/INCREMENTAL\:NO>" "$<$<CONFIG:RelWithDebInfo>:/OPT\:ICF>")
+                 "$<$<CONFIG:RelWithDebInfo>:/INCREMENTAL\:NO>" "$<$<CONFIG:RelWithDebInfo>:/OPT\:ICF>" /Brepro)
 
 if(CMAKE_COMPILE_WARNING_AS_ERROR)
   add_link_options(/WX)

cmake/windows/helpers.cmake

@@ -159,6 +159,7 @@ function(set_target_properties_obs target)
     set_property(GLOBAL APPEND PROPERTY OBS_MODULES_ENABLED ${target})
   endif()
 
+  target_link_options(${target} PRIVATE "/PDBALTPATH:$<TARGET_PDB_FILE_NAME:${target}>")
   target_install_resources(${target})
 endfunction()