cmake: don't force cache variables

3 files changed, 26 insertions, 31 deletions

diff --git a/cmake/msvc.cmake b/cmake/msvc.cmake
index e5912f46..f5915d99 100644
--- a/cmake/msvc.cmake
+++ b/cmake/msvc.cmake
@@ -12,12 +12,11 @@ SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 
 # oldest CPU supported here is Northwood-based Pentium 4. -sh 20150811
-set(cc "/O2it /Ob2 /fp:fast /GS- /GF /GL /Gw /Gy")
+set(cc "/O2 /O2it /Ob2 /fp:fast /GS- /GF /GL /Gw /Gy /Gm /Zc:inline /Zo /FS /Zc:implicitNoexcept /Zc:threadSafeInit")
 
 set(warns_ "")
 
-#C4244: 'return': conversion from '__int64' to 'long', possible loss of data
-set(warns-disable 4530 4577 4789 4244)
+set(warns-disable 4530 4577 4789 4244 4702)
 
 foreach(i ${warns-disable})
     set(warns_ "${warns_} /wd${i}")
@@ -43,59 +42,53 @@ if(CMAKE_PROJECT_NAME STREQUAL "opentrack")
     set(cc "${cc} /GR- /arch:SSE2")
 endif()
 
-set(silly "${warns_} -MT -Gm -Zi")
+set(base-cflags "${warns_} -MT -Zi")
 
-set(_CFLAGS "${silly}")
-set(_CXXFLAGS "${silly}")
+set(_CFLAGS "${base-cflags}")
+set(_CXXFLAGS "${base-cflags}")
 set(_CFLAGS_RELEASE "${cc}")
 set(_CFLAGS_DEBUG "/GS /sdl /Gs /guard:cf")
 set(_CXXFLAGS_RELEASE "${cc}")
 set(_CXXFLAGS_DEBUG "${_CFLAGS_DEBUG}")
 
-set(_LDFLAGS "")
+set(_LDFLAGS "/machine:X86 /DEBUG")
 set(_LDFLAGS_RELEASE "/LTCG:INCREMENTAL /OPT:REF /OPT:ICF=10")
 set(_LDFLAGS_DEBUG "")
 
-set(_LDFLAGS_STATIC "/WX")
+set(_LDFLAGS_STATIC "/machine:X86 /WX")
 set(_LDFLAGS_STATIC_RELEASE "/LTCG:INCREMENTAL")
 set(_LDFLAGS_STATIC_DEBUG "")
 
 foreach(j C CXX)
     foreach(i "" _DEBUG _RELEASE)
-        set(OVERRIDE_${j}_FLAGS${i} "" CACHE STRING "")
-        set(CMAKE_${j}_FLAGS${i} "${_${j}FLAGS${i}} ${OVERRIDE_${j}_FLAGS${i}}" CACHE STRING "" FORCE)
+        set(CMAKE_${j}_FLAGS${i} "${_${j}FLAGS${i}} ${CMAKE_${j}_FLAGS${i}}")
     endforeach()
-    set(CMAKE_${j}_FLAGS "${_${j}FLAGS} ${_${j}_WARNS} ${OVERRIDE_${j}_FLAGS}" CACHE STRING "" FORCE)
+    set(CMAKE_${j}_FLAGS "${_${j}FLAGS} ${_${j}_WARNS} ${CMAKE_${j}_FLAGS}")
 endforeach()
 
 foreach(j "" _DEBUG _RELEASE)
     foreach(i MODULE EXE SHARED)
-        set(OVERRIDE_LDFLAGS${j} "" CACHE STRING "")
-        set(CMAKE_${i}_LINKER_FLAGS${j} "${_LDFLAGS${j}} ${OVERRIDE_LDFLAGS${j}}" CACHE STRING "" FORCE)
+        set(CMAKE_${i}_LINKER_FLAGS${j} "${_LDFLAGS${j}} ${CMAKE_${i}_LINKER_FLAGS${j}}")
     endforeach()
 endforeach()
 
-set(OVERRIDE_LDFLAGS_STATIC "" CACHE STRING "")
-set(OVERRIDE_LDFLAGS_STATIC_RELEASE "" CACHE STRING "")
-set(OVERRIDE_LDFLAGS_STATIC_DEBUG "" CACHE STRING "")
-
-set(CMAKE_STATIC_LINKER_FLAGS "${_LDFLAGS_STATIC} ${OVERRIDE_LDFLAGS_STATIC}" CACHE STRING "" FORCE)
-set(CMAKE_STATIC_LINKER_FLAGS_RELEASE "${_LDFLAGS_STATIC_RELEASE} ${OVERRIDE_LDFLAGS_STATIC_RELEASE}" CACHE STRING "" FORCE)
-set(CMAKE_STATIC_LINKER_FLAGS_DEBUG "${_LDFLAGS_STATIC_DEBUG} ${OVERRIDE_LDFLAGS_STATIC_DEBUG}" CACHE STRING "" FORCE)
+set(CMAKE_STATIC_LINKER_FLAGS "${_LDFLAGS_STATIC} ${CMAKE_STATIC_LINKER_FLAGS}")
+set(CMAKE_STATIC_LINKER_FLAGS_RELEASE "${_LDFLAGS_STATIC_RELEASE} ${CMAKE_STATIC_LINKER_FLAGS_RELEASE}")
+set(CMAKE_STATIC_LINKER_FLAGS_DEBUG "${_LDFLAGS_STATIC_DEBUG} ${CMAKE_STATIC_LINKER_FLAGS_DEBUG}")
 
 set(CMAKE_BUILD_TYPE_INIT RELEASE)
 # for nmake/jom build directories
 if(NOT CMAKE_BUILD_TYPE)
-    set(CMAKE_BUILD_TYPE "RELEASE" CACHE STRING "" FORCE)
+    set(CMAKE_BUILD_TYPE "RELEASE")
 endif()
 
 if(CMAKE_PROJECT_NAME STREQUAL "opentrack")
     foreach (i CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
         string(REGEX MATCH "((^| )[-/][W][0-9]( |\$))" ret "${${i}}")
         if(ret STREQUAL "")
-            set(${i} "-W3 ${${i}}" CACHE STRING "" FORCE)
+            set(${i} "-W3 ${${i}}")
         endif()
     endforeach()
 endif()
 
-set(CMAKE_RC_FLAGS "-nologo -DWIN32" CACHE STRING "" FORCE)
+set(CMAKE_RC_FLAGS "-nologo -DWIN32")
diff --git a/cmake/opentrack-build.cmake b/cmake/opentrack-build.cmake
index 4fe8fde0..ab2bb3b8 100644
--- a/cmake/opentrack-build.cmake
+++ b/cmake/opentrack-build.cmake
@@ -8,13 +8,15 @@
 # PERFORMANCE OF THIS SOFTWARE.
 
 if(NOT CMAKE_INSTALL_PREFIX)
-    set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "" FORCE)
+    set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install")
 endif()
 
 set(CMAKE_BUILD_TYPE_INIT "RELEASE")
 
 if(APPLE)
-    set(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "" FORCE)
+    if(NOT CMAKE_OSX_ARCHITECTURES)
+        set(CMAKE_OSX_ARCHITECTURES "x86_64")
+    endif()
 endif()
 
 function(cleanup_build_dir)
diff --git a/cmake/opentrack-platform.cmake b/cmake/opentrack-platform.cmake
index 9d5b1abe..9c1d73a7 100644
--- a/cmake/opentrack-platform.cmake
+++ b/cmake/opentrack-platform.cmake
@@ -41,9 +41,10 @@ IF(CMAKE_SYSTEM_NAME STREQUAL "Linux")
 endif()
 
 if(MSVC)
-    add_definitions(-DNOMINMAX -D_CRT_SECURE_NO_WARNINGS)
-    add_definitions(-D_ITERATOR_DEBUG_LEVEL=0 -D_HAS_ITERATOR_DEBUGGING=0 -D_SECURE_SCL=0)
-    add_definitions(-DHAS_EXCEPTIONS=0)
+    add_definitions(-DNOMINMAX -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS)
+    add_definitions(-D_ITERATOR_DEBUG_LEVEL=0 -D_ITERATOR_DEBUG_LEVEL=0)
+    add_definitions(-D_HAS_EXCEPTIONS=0)
+
     set(CMAKE_CXX_FLAGS "-std:c++14 ${CMAKE_CXX_FLAGS}")
     if(SDK_INSTALL_DEBUG_INFO)
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Zi")
@@ -112,7 +113,6 @@ function(fix_flags lang flag replacement)
     if(".${replacement}" STREQUAL ".")
         set(pfx "")
     endif()
-    otr_escape_string(flag "${flag}")
     foreach(k _DEBUG _RELEASE _MINSIZEREL _RELWITHDEBINFO "")
         set(tmp "${CMAKE_${lang}_FLAGS${k}}")
         if(NOT ".${replacement}" STREQUAL ".")
@@ -120,9 +120,9 @@ function(fix_flags lang flag replacement)
         endif()
         string(REGEX REPLACE "(^| )${part}${flag}(\$| )" " ${pfx}${replacement}" CMAKE_${lang}_FLAGS${k} "${CMAKE_${lang}_FLAGS${k}}")
         if(NOT ".${tmp}" STREQUAL ".${CMAKE_${lang}_FLAGS${k}}")
-            set(CMAKE_${lang}_FLAGS${k} "${CMAKE_${lang}_FLAGS${k}}" CACHE STRING "" FORCE)
+            set(CMAKE_${lang}_FLAGS${k} "${CMAKE_${lang}_FLAGS${k}}" CACHE STRING "")
         else()
-            set(CMAKE_${lang}_FLAGS${k} "${CMAKE_${lang}_FLAGS${k}} ${pfx}${replacement}" CACHE STRING "" FORCE)
+            set(CMAKE_${lang}_FLAGS${k} "${CMAKE_${lang}_FLAGS${k}} ${pfx}${replacement}" CACHE STRING "")
         endif()
     endforeach()
 endfunction()