11 files changed, 319 insertions, 355 deletions
diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index 3d2b4e7406..b31b077abd 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -58,7 +58,7 @@ set(CMAKE_CONFIGURATION_TYPES "RelWithDebInfo;Release" CACHE STRING "Supported b
 
 # Platform-specific compilation flags.
 
-if (WINDOWS)
+if (NOT CMAKE_CXX_COMPILER_ID MATCHES GNU AND WINDOWS)
   # Don't build DLLs.
   set(BUILD_SHARED_LIBS OFF)
 
@@ -114,7 +114,7 @@ if (WINDOWS)
     string(REPLACE "/Zi" "/Z7" CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO}")
     string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
   endif()
-endif (WINDOWS)
+endif (NOT CMAKE_CXX_COMPILER_ID MATCHES GNU AND WINDOWS)
 
 if (LINUX OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
   set( CMAKE_BUILD_WITH_INSTALL_RPATH TRUE )
diff --git a/indra/cmake/Boost.cmake b/indra/cmake/Boost.cmake
index 31bb4124c2..26c0843300 100644
--- a/indra/cmake/Boost.cmake
+++ b/indra/cmake/Boost.cmake
@@ -9,13 +9,17 @@ if( USE_CONAN )
   target_compile_definitions( ll::boost INTERFACE BOOST_ALLOW_DEPRECATED_HEADERS BOOST_BIND_GLOBAL_PLACEHOLDERS )
   return()
 elseif( NOT USE_AUTOBUILD_3P )
-  if (DARWIN)
-    set(sfx "-mt")
+  if (WINDOWS)
+    set(sfx -mt)
+    target_include_directories( ll::boost SYSTEM INTERFACE /opt/local/x86_64-w64-mingw32/include)
+    target_link_directories( ll::boost INTERFACE /opt/local/x86_64-w64-mingw32/lib)
+  elseif (DARWIN)
+    set(sfx -mt)
     target_include_directories( ll::boost SYSTEM INTERFACE /opt/local/libexec/boost/1.81/include)
     target_link_directories( ll::boost INTERFACE /opt/local/libexec/boost/1.81/lib)
-  else (DARWIN)
+  else (WINDOWS)
     find_package( Boost REQUIRED )
-  endif (DARWIN)
+  endif (WINDOWS)
   target_link_libraries( ll::boost INTERFACE
     boost_context${sfx}
     boost_fiber${sfx}
diff --git a/indra/cmake/CURL.cmake b/indra/cmake/CURL.cmake
index c1ef0c3447..b85de3b845 100644
--- a/indra/cmake/CURL.cmake
+++ b/indra/cmake/CURL.cmake
@@ -27,7 +27,7 @@ use_prebuilt_binary(curl)
         )
     endif (NOT ${curl_archs} STREQUAL ${CMAKE_OSX_ARCHITECTURES})
   endif (DARWIN)
-elseif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/curl_installed OR NOT ${curl_installed} EQUAL 0)
+elseif (CMAKE_SYSTEM_NAME MATCHES FreeBSD AND (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/curl_installed OR NOT ${curl_installed} EQUAL 0))
   if (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-curl-7.54.1-r1.tar.gz)
     file(DOWNLOAD
       https://github.com/secondlife/3p-curl/archive/refs/tags/v7.54.1-r1.tar.gz
@@ -89,7 +89,7 @@ elseif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRA
     )
   file(WRITE ${PREBUILD_TRACKING_DIR}/curl_installed "${curl_installed}")
 endif (DARWIN OR LINUX OR NOT USESYSTEMLIBS)
-if (WINDOWS)
+if (WINDOWS AND NOT USESYSTEMLIBS)
   target_link_libraries(ll::libcurl INTERFACE
     ${ARCH_PREBUILT_DIRS_RELEASE}/libcurl.lib
     ll::openssl
diff --git a/indra/cmake/LLPrimitive.cmake b/indra/cmake/LLPrimitive.cmake
index e491eb2e32..39c07e3377 100644
--- a/indra/cmake/LLPrimitive.cmake
+++ b/indra/cmake/LLPrimitive.cmake
@@ -19,112 +19,117 @@ if( USE_CONAN )
 endif()
 
 if( USESYSTEMLIBS )
-  if( LINUX OR CMAKE_SYSTEM_NAME MATCHES FreeBSD)
+  if( WINDOWS )
+    include(FindPkgConfig)
+    pkg_check_modules(Colladadom REQUIRED collada-dom-141)
+    target_compile_definitions( ll::colladadom INTERFACE COLLADA_DOM_SUPPORT141 )
+    target_include_directories( ll::colladadom SYSTEM INTERFACE ${Colladadom_INCLUDE_DIRS} )
+    target_link_directories( ll::colladadom INTERFACE ${Colladadom_LIBRARY_DIRS} )
+    target_link_libraries( ll::colladadom INTERFACE ${Colladadom_LIBRARIES} )
+    return ()
+  elseif( LINUX OR CMAKE_SYSTEM_NAME MATCHES FreeBSD )
     # Build of the collada-dom for Linux and FreeBSD is done in
     # indra/llprimitive/CMakeLists.txt
     return ()
-  endif( LINUX OR CMAKE_SYSTEM_NAME MATCHES FreeBSD)
-  include(FindPkgConfig)
-  pkg_check_modules(Minizip REQUIRED minizip)
-  pkg_check_modules(Libxml2 REQUIRED libxml-2.0)
-  pkg_check_modules(Libpcrecpp libpcrecpp)
-  target_link_libraries( ll::minizip-ng INTERFACE ${Minizip_LIBRARIES} )
-  target_link_libraries( ll::libxml INTERFACE ${Libxml2_LIBRARIES} )
-  if ( ${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/colladadom_installed OR NOT ${colladadom_installed} EQUAL 0 )
-    if (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz)
-      file(DOWNLOAD
-        https://github.com/secondlife/3p-colladadom/archive/refs/tags/v2.3-r4.tar.gz
-        ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz
-        )
-    endif (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz)
-    file(ARCHIVE_EXTRACT
-      INPUT ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz
-      DESTINATION ${CMAKE_BINARY_DIR}
-      )
-    file(MAKE_DIRECTORY ${LIBS_PREBUILT_DIR}/include/collada/1.4)
-    if( DARWIN )
-      try_compile(COLLADADOM_RESULT
-        PROJECT colladadom
-        SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
-        BINARY_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
-        TARGET collada14dom
-        CMAKE_FLAGS
-          -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-          -DCMAKE_CXX_FLAGS:STRING=-I${Minizip_INCLUDE_DIRS}
-          "-DCMAKE_SHARED_LINKER_FLAGS:STRING=-L${Minizip_LIBRARY_DIRS} -L${Minizip_LIBRARY_DIRS}exec/boost/1.81/lib"
-          -Dlibpcrecpp_LIBRARIES:STRING=pcrecpp
-          -DZLIB_LIBRARIES:STRING=${Libxml2_LIBRARIES}
-          -DBoost_FILESYSTEM_LIBRARY:STRING=boost_filesystem-mt
-          -DBoost_SYSTEM_LIBRARY:STRING=boost_system-mt
-          -Dlibpcrecpp_CFLAGS_OTHERS:STRING=-I${Libpcrecpp_INCLUDE_DIRS}
-          -DEXTRA_COMPILE_FLAGS:STRING=-I${Libxml2_INCLUDE_DIRS}
-          -DBoost_CFLAGS:STRING=-I${Libpcrecpp_LIBRARY_DIRS}exec/boost/1.81/include
-          -DOPT_COLLADA14:BOOL=ON
-          -DCOLLADA_DOM_INCLUDE_INSTALL_DIR:FILEPATH=${LIBS_PREBUILT_DIR}/include/collada
-          -DCOLLADA_DOM_SOVERSION:STRING=0
-          -DCOLLADA_DOM_VERSION:STRING=2.3-r4
-          -DCMAKE_OSX_ARCHITECTURES:STRING=${CMAKE_OSX_ARCHITECTURES}
-          -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.15
-        OUTPUT_VARIABLE colladadom_installed
-        )
-      if (${COLLADADOM_RESULT})
-        file(
-          COPY
-            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.2.3-r4.dylib
-            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.0.dylib
-            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.dylib
-          DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
-          FOLLOW_SYMLINK_CHAIN
+  else( WINDOWS )
+    include(FindPkgConfig)
+    pkg_check_modules(Minizip REQUIRED minizip)
+    pkg_check_modules(Libxml2 REQUIRED libxml-2.0)
+    pkg_check_modules(Libpcrecpp libpcrecpp)
+    target_link_libraries( ll::minizip-ng INTERFACE ${Minizip_LIBRARIES} )
+    target_link_libraries( ll::libxml INTERFACE ${Libxml2_LIBRARIES} )
+    if( ${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/colladadom_installed OR NOT ${colladadom_installed} EQUAL 0 )
+      if( NOT EXISTS ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz )
+        file(DOWNLOAD
+          https://github.com/secondlife/3p-colladadom/archive/refs/tags/v2.3-r4.tar.gz
+          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz
           )
-      endif (${COLLADADOM_RESULT})
-    else( DARWIN )
-      execute_process(
-        COMMAND sed -i "" -e "s/SHARED/STATIC/g" 1.4/CMakeLists.txt
-        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src
-        )
-      try_compile(COLLADADOM_RESULT
-        PROJECT colladadom
-        SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
-        BINARY_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
-        TARGET collada14dom
-        CMAKE_FLAGS
-          -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-          -DCMAKE_CXX_FLAGS:STRING=-I${Minizip_INCLUDE_DIRS}
-          -DCMAKE_SHARED_LINKER_FLAGS:STRING=-L${Minizip_LIBRARY_DIRS}
-          -Dlibpcrecpp_LIBRARIES:STRING=pcrecpp
-          -DZLIB_LIBRARIES:STRING=${Libxml2_LIBRARIES}
-          -DBoost_FILESYSTEM_LIBRARY:STRING=boost_filesystem
-          -DBoost_SYSTEM_LIBRARY:STRING=boost_system
-          -DEXTRA_COMPILE_FLAGS:STRING=-I${Libxml2_INCLUDE_DIRS}
-          -DBoost_CFLAGS:STRING=-I${Libpcrecpp_INCLUDE_DIRS}
-          -DOPT_COLLADA14:BOOL=ON
-          -DCOLLADA_DOM_INCLUDE_INSTALL_DIR:FILEPATH=${LIBS_PREBUILT_DIR}/include/collada
-          -DCOLLADA_DOM_SOVERSION:STRING=0
-          -DCOLLADA_DOM_VERSION:STRING=2.3-r4
-        OUTPUT_VARIABLE colladadom_installed
+      endif( NOT EXISTS ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz )
+      file(ARCHIVE_EXTRACT
+        INPUT ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4.tar.gz
+        DESTINATION ${CMAKE_BINARY_DIR}
         )
-      if (${COLLADADOM_RESULT})
+      file(MAKE_DIRECTORY ${LIBS_PREBUILT_DIR}/include/collada/1.4)
+      if( DARWIN )
+        try_compile(COLLADADOM_RESULT
+          PROJECT colladadom
+          SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
+          BINARY_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
+          TARGET collada14dom
+          CMAKE_FLAGS
+            -DCMAKE_CXX_FLAGS:STRING=-I${Minizip_INCLUDE_DIRS}
+            "-DCMAKE_SHARED_LINKER_FLAGS:STRING=-L${Minizip_LIBRARY_DIRS} -L${Minizip_LIBRARY_DIRS}exec/boost/1.81/lib"
+            -Dlibpcrecpp_LIBRARIES:STRING=pcrecpp
+            -DZLIB_LIBRARIES:STRING=${Libxml2_LIBRARIES}
+            -DBoost_FILESYSTEM_LIBRARY:STRING=boost_filesystem-mt
+            -DBoost_SYSTEM_LIBRARY:STRING=boost_system-mt
+            -Dlibpcrecpp_CFLAGS_OTHERS:STRING=-I${Libpcrecpp_INCLUDE_DIRS}
+            -DEXTRA_COMPILE_FLAGS:STRING=-I${Libxml2_INCLUDE_DIRS}
+            -DBoost_CFLAGS:STRING=-I${Libpcrecpp_LIBRARY_DIRS}exec/boost/1.81/include
+            -DOPT_COLLADA14:BOOL=ON
+            -DCOLLADA_DOM_INCLUDE_INSTALL_DIR:FILEPATH=${LIBS_PREBUILT_DIR}/include/collada
+            -DCOLLADA_DOM_SOVERSION:STRING=0
+            -DCOLLADA_DOM_VERSION:STRING=2.3-r4
+          OUTPUT_VARIABLE colladadom_installed
+          )
+        if( ${COLLADADOM_RESULT} )
+          file(
+            COPY
+              ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.2.3-r4.dylib
+              ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.0.dylib
+              ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.dylib
+            DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
+            FOLLOW_SYMLINK_CHAIN
+            )
+        endif( ${COLLADADOM_RESULT} )
+      else( DARWIN )
+        execute_process(
+          COMMAND sed -i "" -e "s/SHARED/STATIC/g" 1.4/CMakeLists.txt
+          WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src
+          )
+        try_compile(COLLADADOM_RESULT
+          PROJECT colladadom
+          SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
+          BINARY_DIR ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4
+          TARGET collada14dom
+          CMAKE_FLAGS
+            -DCMAKE_CXX_FLAGS:STRING=-I${Minizip_INCLUDE_DIRS}
+            -DCMAKE_SHARED_LINKER_FLAGS:STRING=-L${Minizip_LIBRARY_DIRS}
+            -Dlibpcrecpp_LIBRARIES:STRING=pcrecpp
+            -DZLIB_LIBRARIES:STRING=${Libxml2_LIBRARIES}
+            -DBoost_FILESYSTEM_LIBRARY:STRING=boost_filesystem
+            -DBoost_SYSTEM_LIBRARY:STRING=boost_system
+            -Dlibpcrecpp_CFLAGS_OTHERS:STRING=-I${Libpcrecpp_INCLUDE_DIRS}
+            -DEXTRA_COMPILE_FLAGS:STRING=-I${Libxml2_INCLUDE_DIRS}
+            -DOPT_COLLADA14:BOOL=ON
+            -DCOLLADA_DOM_INCLUDE_INSTALL_DIR:FILEPATH=${LIBS_PREBUILT_DIR}/include/collada
+            -DCOLLADA_DOM_SOVERSION:STRING=0
+            -DCOLLADA_DOM_VERSION:STRING=2.3-r4
+          OUTPUT_VARIABLE colladadom_installed
+          )
+        if( ${COLLADADOM_RESULT} )
+          file(
+            COPY ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.a
+            DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
+            )
+        endif( ${COLLADADOM_RESULT} )
+      endif( DARWIN )
+      if( ${COLLADADOM_RESULT} )
+        file(REMOVE_RECURSE ${LIBS_PREBUILT_DIR}/include/collada/1.4)
         file(
-          COPY ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/src/1.4/libcollada14dom.a
-          DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
+          COPY
+            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/1.4
+            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/1.5
+            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/dae
+            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/dae.h
+            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/dom.h
+            ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/modules
+          DESTINATION ${LIBS_PREBUILT_DIR}/include/collada
           )
-      endif (${COLLADADOM_RESULT})
-    endif( DARWIN )
-    if (${COLLADADOM_RESULT})
-      file(REMOVE_RECURSE ${LIBS_PREBUILT_DIR}/include/collada/1.4)
-      file(
-        COPY
-          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/1.4
-          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/1.5
-          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/dae
-          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/dae.h
-          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/dom.h
-          ${CMAKE_BINARY_DIR}/3p-colladadom-2.3-r4/include/modules
-        DESTINATION ${LIBS_PREBUILT_DIR}/include/collada
-        )
-      file(WRITE ${PREBUILD_TRACKING_DIR}/colladadom_installed "${colladadom_installed}")
-    endif (${COLLADADOM_RESULT})
-  endif( ${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/colladadom_installed OR NOT ${colladadom_installed} EQUAL 0 )
+        file(WRITE ${PREBUILD_TRACKING_DIR}/colladadom_installed "${colladadom_installed}")
+      endif( ${COLLADADOM_RESULT} )
+    endif( ${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/colladadom_installed OR NOT ${colladadom_installed} EQUAL 0 )
+  endif( WINDOWS )
 else( USESYSTEMLIBS )
 use_system_binary( colladadom )
 
diff --git a/indra/cmake/LLWindow.cmake b/indra/cmake/LLWindow.cmake
index 383051a4a6..31907d31df 100644
--- a/indra/cmake/LLWindow.cmake
+++ b/indra/cmake/LLWindow.cmake
@@ -7,7 +7,7 @@ include(Prebuilt)
 include_guard()
 add_library( ll::SDL INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS AND NOT DARWIN)
+if (USESYSTEMLIBS AND NOT (WINDOWS OR DARWIN))
   include(FindPkgConfig)
   pkg_check_modules(Sdl2 REQUIRED sdl2)
   target_compile_definitions( ll::SDL INTERFACE LL_SDL=1)
diff --git a/indra/cmake/Meshoptimizer.cmake b/indra/cmake/Meshoptimizer.cmake
index 0dc4069431..e1bfe10e93 100644
--- a/indra/cmake/Meshoptimizer.cmake
+++ b/indra/cmake/Meshoptimizer.cmake
@@ -8,72 +8,49 @@ add_library( ll::meshoptimizer INTERFACE IMPORTED )
 
 if (NOT USESYSTEMLIBS)
 use_system_binary(meshoptimizer)
-else (NOT USESYSTEMLIBS)
-  if (NOT (${LINUX_DISTRO} MATCHES fedora OR (${LINUX_DISTRO} MATCHES opensuse-tumbleweed) OR DARWIN))
-    find_package(meshoptimizer)
-    target_link_libraries( ll::meshoptimizer INTERFACE meshoptimizer)
-  endif (NOT (${LINUX_DISTRO} MATCHES fedora OR (${LINUX_DISTRO} MATCHES opensuse-tumbleweed) OR DARWIN))
+elseif (${LINUX_DISTRO} MATCHES debian OR (${LINUX_DISTRO} MATCHES ubuntu) OR CMAKE_SYSTEM_NAME MATCHES FreeBSD)
+  find_package(meshoptimizer)
+  target_link_libraries( ll::meshoptimizer INTERFACE meshoptimizer)
+  return ()
 endif (NOT USESYSTEMLIBS)
 
-if (${LINUX_DISTRO} MATCHES fedora OR (${LINUX_DISTRO} MATCHES opensuse-tumbleweed) OR DARWIN OR NOT USESYSTEMLIBS)
-  if (USESYSTEMLIBS)
-    if (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed OR NOT ${meshoptimizer_installed} EQUAL 0)
-      if (NOT EXISTS ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz)
-        file(DOWNLOAD
-          https://github.com/zeux/meshoptimizer/archive/refs/tags/v0.21.tar.gz
-          ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz
-          )
-      endif (NOT EXISTS ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz)
-      file(ARCHIVE_EXTRACT
-        INPUT ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz
-        DESTINATION ${CMAKE_BINARY_DIR}
-        )
-      if (DARWIN)
-        try_compile(MESHOPTIMIZER_RESULT
-          PROJECT meshoptimizer
-          SOURCE_DIR ${CMAKE_BINARY_DIR}/meshoptimizer-0.21
-          BINARY_DIR ${CMAKE_BINARY_DIR}/meshoptimizer-0.21
-          TARGET meshoptimizer
-          CMAKE_FLAGS
-            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-            -DCMAKE_OSX_ARCHITECTURES:STRING=${CMAKE_OSX_ARCHITECTURES}
-            -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.15
-          OUTPUT_VARIABLE meshoptimizer_installed
-          )
-      else (DARWIN)
-        try_compile(MESHOPTIMIZER_RESULT
-          PROJECT meshoptimizer
-          SOURCE_DIR ${CMAKE_BINARY_DIR}/meshoptimizer-0.21
-          BINARY_DIR ${CMAKE_BINARY_DIR}/meshoptimizer-0.21
-          TARGET meshoptimizer
-          CMAKE_FLAGS
-            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-          OUTPUT_VARIABLE meshoptimizer_installed
-          )
-      endif (DARWIN)
-      if (${MESHOPTIMIZER_RESULT})
-        file(
-          COPY ${CMAKE_BINARY_DIR}/meshoptimizer-0.21/src/meshoptimizer.h
-          DESTINATION ${LIBS_PREBUILT_DIR}/include/meshoptimizer
-          )
-        file(
-          COPY ${CMAKE_BINARY_DIR}/meshoptimizer-0.21/libmeshoptimizer.a
-          DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
-          )
-        file(WRITE ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed "0")
-      endif (${MESHOPTIMIZER_RESULT})
-    endif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed OR NOT ${meshoptimizer_installed} EQUAL 0)
-  else (USESYSTEMLIBS)
+if (LINUX OR NOT USESYSTEMLIBS)
 use_prebuilt_binary(meshoptimizer)
-  endif (USESYSTEMLIBS)
+elseif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed OR NOT ${meshoptimizer_installed} EQUAL 0)
+  if (NOT EXISTS ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz)
+    file(DOWNLOAD
+      https://github.com/zeux/meshoptimizer/archive/refs/tags/v0.21.tar.gz
+      ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz
+      )
+  endif (NOT EXISTS ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz)
+  file(ARCHIVE_EXTRACT
+    INPUT ${CMAKE_BINARY_DIR}/meshoptimizer-0.21.tar.gz
+    DESTINATION ${CMAKE_BINARY_DIR}
+    )
+  try_compile(MESHOPTIMIZER_RESULT
+    PROJECT meshoptimizer
+    SOURCE_DIR ${CMAKE_BINARY_DIR}/meshoptimizer-0.21
+    BINARY_DIR ${CMAKE_BINARY_DIR}/meshoptimizer-0.21
+    TARGET meshoptimizer
+    OUTPUT_VARIABLE meshoptimizer_installed
+    )
+  if (${MESHOPTIMIZER_RESULT})
+    file(
+      COPY ${CMAKE_BINARY_DIR}/meshoptimizer-0.21/src/meshoptimizer.h
+      DESTINATION ${LIBS_PREBUILT_DIR}/include/meshoptimizer
+      )
+    file(
+      COPY ${CMAKE_BINARY_DIR}/meshoptimizer-0.21/libmeshoptimizer.a
+      DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
+      )
+    file(WRITE ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed "${meshoptimizer_installed}")
+  endif (${MESHOPTIMIZER_RESULT})
+endif (LINUX OR NOT USESYSTEMLIBS)
 
-if (WINDOWS)
+if (NOT USESYSTEMLIBS AND WINDOWS)
   target_link_libraries( ll::meshoptimizer INTERFACE meshoptimizer.lib)
-elseif (LINUX)
+else (NOT USESYSTEMLIBS AND WINDOWS)
   target_link_libraries( ll::meshoptimizer INTERFACE libmeshoptimizer.a)
-elseif (DARWIN)
-  target_link_libraries( ll::meshoptimizer INTERFACE libmeshoptimizer.a)
-endif (WINDOWS)
+endif (NOT USESYSTEMLIBS AND WINDOWS)
 
 target_include_directories( ll::meshoptimizer SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/meshoptimizer)
-endif (${LINUX_DISTRO} MATCHES fedora OR (${LINUX_DISTRO} MATCHES opensuse-tumbleweed) OR DARWIN OR NOT USESYSTEMLIBS)
diff --git a/indra/cmake/NDOF.cmake b/indra/cmake/NDOF.cmake
index 1bf6c5086c..b75bb2509d 100644
--- a/indra/cmake/NDOF.cmake
+++ b/indra/cmake/NDOF.cmake
@@ -8,8 +8,9 @@ add_library( ll::ndof INTERFACE IMPORTED )
 
 if (NDOF)
   if (WINDOWS OR DARWIN)
-  if (USESYSTEMLIBS)
-    if (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/libndofdev_installed OR NOT ${libndofdev_installed} EQUAL 0)
+    if (NOT USESYSTEMLIBS)
+    use_prebuilt_binary(libndofdev)
+    elseif (DARWIN AND (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/libndofdev_installed OR NOT ${libndofdev_installed} EQUAL 0))
       file(DOWNLOAD
         https://github.com/secondlife/3p-libndofdev/archive/refs/tags/v0.1.8e9edc7.tar.gz
         ${CMAKE_BINARY_DIR}/3p-libndofdev-0.1.8e9edc7.tar.gz
@@ -23,11 +24,7 @@ if (NDOF)
         SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-libndofdev-0.1.8e9edc7/libndofdev
         BINARY_DIR ${CMAKE_BINARY_DIR}/3p-libndofdev-0.1.8e9edc7/libndofdev
         TARGET ndofdev
-        CMAKE_FLAGS
-          -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-          -DCMAKE_OSX_ARCHITECTURES:STRING=${CMAKE_OSX_ARCHITECTURES}
-          -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.15
-          -DCMAKE_C_FLAGS:STRING=-DTARGET_OS_MAC\ -Wno-int-conversion
+        CMAKE_FLAGS -DCMAKE_C_FLAGS:STRING=-DTARGET_OS_MAC\ -Wno-int-conversion
         OUTPUT_VARIABLE libndofdev_installed
         )
       if (${LIBNDOFDEV_RESULT})
@@ -39,12 +36,9 @@ if (NDOF)
           COPY ${CMAKE_BINARY_DIR}/3p-libndofdev-0.1.8e9edc7/libndofdev/src/libndofdev.dylib
           DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
           )
-        file(WRITE ${PREBUILD_TRACKING_DIR}/libndofdev_installed "0")
+        file(WRITE ${PREBUILD_TRACKING_DIR}/libndofdev_installed "${libndofdev_installed}")
       endif (${LIBNDOFDEV_RESULT})
-    endif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/libndofdev_installed OR NOT ${libndofdev_installed} EQUAL 0)
-  else (USESYSTEMLIBS)
-    use_prebuilt_binary(libndofdev)
-  endif (USESYSTEMLIBS)
+    endif (NOT USESYSTEMLIBS)
   elseif (LINUX)
     use_prebuilt_binary(open-libndofdev)
   endif (WINDOWS OR DARWIN)
diff --git a/indra/cmake/OpenJPEG.cmake b/indra/cmake/OpenJPEG.cmake
index b1f776ad1d..463e4365ce 100644
--- a/indra/cmake/OpenJPEG.cmake
+++ b/indra/cmake/OpenJPEG.cmake
@@ -7,65 +7,47 @@ add_library( ll::openjpeg INTERFACE IMPORTED )
 if (NOT USESYSTEMLIBS)
 use_system_binary(openjpeg)
 endif (NOT USESYSTEMLIBS)
-if (USESYSTEMLIBS AND NOT LINUX)
-  if (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/openjpeg_installed OR NOT ${openjpeg_installed} EQUAL 0)
-    if (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz)
-      file(DOWNLOAD
-        https://github.com/secondlife/3p-openjpeg/archive/refs/tags/v2.5.0.ea12248.tar.gz
-        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz
-        )
-    endif (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz)
-    file(ARCHIVE_EXTRACT
-      INPUT ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz
-      DESTINATION ${CMAKE_BINARY_DIR}
-      )
-    if (DARWIN)
-      try_compile(OPENJPEG_RESULT
-        PROJECT OPENJPEG
-        SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg
-        BINARY_DIR ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg
-        TARGET openjp2
-        CMAKE_FLAGS
-          -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-          -DBUILD_SHARED_LIBS:BOOL=OFF
-          -DCMAKE_OSX_ARCHITECTURES:STRING=${CMAKE_OSX_ARCHITECTURES}
-          -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.15
-        OUTPUT_VARIABLE openjpeg_installed
-        )
-    else (DARWIN)
-      try_compile(OPENJPEG_RESULT
-        PROJECT OPENJPEG
-        SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg
-        BINARY_DIR ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg
-        TARGET openjp2
-        CMAKE_FLAGS
-          -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-          -DBUILD_SHARED_LIBS:BOOL=OFF
-          -DCMAKE_BUILD_WITH_INSTALL_RPATH:BOOL=ON
-        OUTPUT_VARIABLE openjpeg_installed
-        )
-    endif (DARWIN)
-    if (${OPENJPEG_RESULT})
-      file(
-        COPY
-          ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/cio.h
-          ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/event.h
-          ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/openjpeg.h
-          ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/opj_config.h
-          ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/opj_config_private.h
-          ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/opj_stdint.h
-        DESTINATION ${LIBS_PREBUILT_DIR}/include/openjpeg
-        )
-      file(
-        COPY ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/bin/libopenjp2.a
-        DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
-        )
-      file(WRITE ${PREBUILD_TRACKING_DIR}/openjpeg_installed "${openjpeg_installed}")
-    endif (${OPENJPEG_RESULT})
-  endif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/openjpeg_installed OR NOT ${openjpeg_installed} EQUAL 0)
-else (USESYSTEMLIBS AND NOT LINUX)
+if (LINUX OR NOT USESYSTEMLIBS)
 use_prebuilt_binary(openjpeg)
-endif (USESYSTEMLIBS AND NOT LINUX)
+elseif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/openjpeg_installed OR NOT ${openjpeg_installed} EQUAL 0)
+  if (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz)
+    file(DOWNLOAD
+      https://github.com/secondlife/3p-openjpeg/archive/refs/tags/v2.5.0.ea12248.tar.gz
+      ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz
+      )
+  endif (NOT EXISTS ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz)
+  file(ARCHIVE_EXTRACT
+    INPUT ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248.tar.gz
+    DESTINATION ${CMAKE_BINARY_DIR}
+    )
+  try_compile(OPENJPEG_RESULT
+    PROJECT OPENJPEG
+    SOURCE_DIR ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg
+    BINARY_DIR ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg
+    TARGET openjp2
+    CMAKE_FLAGS
+      -DBUILD_SHARED_LIBS:BOOL=${BUILD_SHARED_LIBS}
+      -DCMAKE_BUILD_WITH_INSTALL_RPATH:BOOL=ON
+    OUTPUT_VARIABLE openjpeg_installed
+    )
+  if (${OPENJPEG_RESULT})
+    file(
+      COPY
+        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/cio.h
+        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/event.h
+        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/openjpeg.h
+        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/opj_config.h
+        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/opj_config_private.h
+        ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/src/lib/openjp2/opj_stdint.h
+      DESTINATION ${LIBS_PREBUILT_DIR}/include/openjpeg
+      )
+    file(
+      COPY ${CMAKE_BINARY_DIR}/3p-openjpeg-2.5.0.ea12248/openjpeg/bin/libopenjp2.a
+      DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
+      )
+    file(WRITE ${PREBUILD_TRACKING_DIR}/openjpeg_installed "${openjpeg_installed}")
+  endif (${OPENJPEG_RESULT})
+endif (LINUX OR NOT USESYSTEMLIBS)
 
 target_link_libraries(ll::openjpeg INTERFACE openjp2 )
 target_include_directories( ll::openjpeg SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
diff --git a/indra/cmake/OpenSSL.cmake b/indra/cmake/OpenSSL.cmake
index 801850b7ab..c6481c89e9 100644
--- a/indra/cmake/OpenSSL.cmake
+++ b/indra/cmake/OpenSSL.cmake
@@ -42,7 +42,7 @@ use_prebuilt_binary(openssl)
         )
     endif (NOT ${ssl_archs} STREQUAL ${CMAKE_OSX_ARCHITECTURES})
   endif (DARWIN)
-elseif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/openssl_installed OR NOT ${openssl_installed} EQUAL 0)
+elseif (CMAKE_SYSTEM_NAME MATCHES FreeBSD AND (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/openssl_installed OR NOT ${openssl_installed} EQUAL 0))
   if (NOT EXISTS ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w.tar.gz)
     file(DOWNLOAD
       https://github.com/openssl/openssl/archive/refs/tags/OpenSSL_1_1_1w.tar.gz
@@ -55,135 +55,137 @@ elseif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRA
     )
   execute_process(
     COMMAND ./config no-shared
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w
     )
   execute_process(
     COMMAND make -j${MAKE_JOBS}
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w
     RESULT_VARIABLE openssl_installed
     )
   file(
     COPY
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/aes.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/asn1.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/asn1_mac.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/asn1err.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/asn1t.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/async.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/asyncerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/bio.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/bioerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/blowfish.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/bn.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/bnerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/buffer.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/buffererr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/camellia.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/cast.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/cmac.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/cms.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/cmserr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/comp.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/comperr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/conf.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/conf_api.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/conferr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/crypto.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/cryptoerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ct.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/cterr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/des.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/dh.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/dherr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/dsa.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/dsaerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/dtls1.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/e_os2.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ebcdic.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ec.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ecdh.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ecdsa.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ecerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/engine.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/engineerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/err.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/evp.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/evperr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/hmac.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/idea.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/kdf.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/kdferr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/lhash.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/md2.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/md4.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/md5.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/mdc2.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/modes.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/obj_mac.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/objects.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/objectserr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ocsp.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ocsperr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/opensslconf.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/opensslv.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ossl_typ.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pem.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pem2.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pemerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pkcs12.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pkcs12err.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pkcs7.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/pkcs7err.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rand.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rand_drbg.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/randerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rc2.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rc4.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rc5.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ripemd.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rsa.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/rsaerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/safestack.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/seed.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/sha.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/srp.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/srtp.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ssl.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ssl2.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ssl3.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/sslerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/stack.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/store.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/storeerr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/symhacks.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/tls1.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ts.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/tserr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/txt_db.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/ui.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/uierr.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/whrlpool.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/x509.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/x509_vfy.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/x509err.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/x509v3.h
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/include/openssl/x509v3err.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/aes.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/asn1.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/asn1_mac.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/asn1err.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/asn1t.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/async.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/asyncerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/bio.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/bioerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/blowfish.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/bn.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/bnerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/buffer.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/buffererr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/camellia.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/cast.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/cmac.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/cms.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/cmserr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/comp.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/comperr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/conf.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/conf_api.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/conferr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/crypto.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/cryptoerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ct.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/cterr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/des.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/dh.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/dherr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/dsa.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/dsaerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/dtls1.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/e_os2.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ebcdic.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ec.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ecdh.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ecdsa.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ecerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/engine.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/engineerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/err.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/evp.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/evperr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/hmac.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/idea.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/kdf.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/kdferr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/lhash.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/md2.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/md4.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/md5.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/mdc2.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/modes.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/obj_mac.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/objects.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/objectserr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ocsp.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ocsperr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/opensslconf.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/opensslv.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ossl_typ.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pem.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pem2.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pemerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pkcs12.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pkcs12err.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pkcs7.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/pkcs7err.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rand.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rand_drbg.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/randerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rc2.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rc4.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rc5.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ripemd.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rsa.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/rsaerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/safestack.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/seed.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/sha.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/srp.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/srtp.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ssl.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ssl2.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ssl3.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/sslerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/stack.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/store.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/storeerr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/symhacks.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/tls1.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ts.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/tserr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/txt_db.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/ui.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/uierr.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/whrlpool.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/x509.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/x509_vfy.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/x509err.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/x509v3.h
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/include/openssl/x509v3err.h
     DESTINATION ${LIBS_PREBUILT_DIR}/include/openssl
     )
   file(
     COPY
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/libcrypto.a
-      ${CMAKE_BINARY_DIR}/OpenSSL_1_1_1w/libssl.a
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/libcrypto.a
+      ${CMAKE_BINARY_DIR}/openssl-OpenSSL_1_1_1w/libssl.a
     DESTINATION ${LIBS_PREBUILT_DIR}/lib/release
     )
   file(WRITE ${PREBUILD_TRACKING_DIR}/openssl_installed "${openssl_installed}")
 endif (DARWIN OR LINUX OR NOT USESYSTEMLIBS)
-if (WINDOWS)
+if (WINDOWS AND NOT USESYSTEMLIBS)
   target_link_libraries(ll::openssl INTERFACE ${ARCH_PREBUILT_DIRS_RELEASE}/libssl.lib ${ARCH_PREBUILT_DIRS_RELEASE}/libcrypto.lib Crypt32.lib)
 elseif (LINUX)
   target_link_libraries(ll::openssl INTERFACE ${ARCH_PREBUILT_DIRS_RELEASE}/libssl.a ${ARCH_PREBUILT_DIRS_RELEASE}/libcrypto.a dl)
 else()
   target_link_libraries(ll::openssl INTERFACE ssl crypto)
-endif (WINDOWS)
+endif (WINDOWS AND NOT USESYSTEMLIBS)
+if (NOT (WINDOWS AND USESYSTEMLIBS))
 target_include_directories( ll::openssl SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
+endif (NOT (WINDOWS AND USESYSTEMLIBS))
 
diff --git a/indra/cmake/ViewerMiscLibs.cmake b/indra/cmake/ViewerMiscLibs.cmake
index 0a5191ff08..13f5ebf862 100644
--- a/indra/cmake/ViewerMiscLibs.cmake
+++ b/indra/cmake/ViewerMiscLibs.cmake
@@ -1,12 +1,12 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-if (NOT DARWIN)
+if (NOT (WINDOWS OR DARWIN))
   add_library( ll::fontconfig INTERFACE IMPORTED )
 
   find_package(Fontconfig REQUIRED)
   target_link_libraries( ll::fontconfig INTERFACE  Fontconfig::Fontconfig )
-endif (NOT DARWIN)
+endif (NOT (WINDOWS OR DARWIN))
 
 if( USE_AUTOBUILD_3P )
   use_prebuilt_binary(libhunspell)
@@ -16,8 +16,8 @@ if (NOT USESYSTEMLIBS)
 use_prebuilt_binary(slvoice)
 endif (NOT USESYSTEMLIBS)
 
-if ((${LINUX_DISTRO} MATCHES debian OR DARWIN) OR NOT USESYSTEMLIBS)
+if ((${LINUX_DISTRO} MATCHES debian OR WINDOWS OR DARWIN) OR NOT USESYSTEMLIBS)
 use_prebuilt_binary(nanosvg)
-endif ((${LINUX_DISTRO} MATCHES debian OR DARWIN) OR NOT USESYSTEMLIBS)
+endif ((${LINUX_DISTRO} MATCHES debian OR WINDOWS OR DARWIN) OR NOT USESYSTEMLIBS)
 use_prebuilt_binary(viewer-fonts)
 use_prebuilt_binary(emoji_shortcodes)
diff --git a/indra/cmake/WebRTC.cmake b/indra/cmake/WebRTC.cmake
index 89ac794c89..eec4e2ce7a 100644
--- a/indra/cmake/WebRTC.cmake
+++ b/indra/cmake/WebRTC.cmake
@@ -8,7 +8,7 @@ add_library( ll::webrtc INTERFACE IMPORTED )
 target_include_directories( ll::webrtc SYSTEM INTERFACE "${LIBS_PREBUILT_DIR}/include/webrtc" "${LIBS_PREBUILT_DIR}/include/webrtc/third_party/abseil-cpp")
 if (${LINUX_DISTRO} MATCHES debian OR CMAKE_OSX_ARCHITECTURES MATCHES x86_64)
 use_prebuilt_binary(webrtc)
-elseif (NOT CMAKE_SYSTEM_NAME MATCHES FreeBSD)
+elseif (NOT (WINDOWS OR CMAKE_SYSTEM_NAME MATCHES FreeBSD))
     target_compile_definitions(ll::webrtc INTERFACE CM_WEBRTC=1)
     if (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/webrtc_installed OR NOT ${webrtc_installed} EQUAL 0)
         if (DARWIN)