Add CMake option to not use parallel STL.

cmake/server.cmake

@@ -34,6 +34,6 @@ if(NO_STATISTICS)
     target_compile_definitions(TracyServer PUBLIC TRACY_NO_STATISTICS)
 endif()
 
-if(UNIX AND NOT APPLE AND NOT EMSCRIPTEN)
+if(NOT NO_PARALLEL_STL AND UNIX AND NOT APPLE AND NOT EMSCRIPTEN)
     target_link_libraries(TracyServer PRIVATE TracyTbb)
 endif()

cmake/vendor.cmake

@@ -208,27 +208,31 @@ if (NOT NO_FILESELECTOR AND NOT EMSCRIPTEN)
 endif()
 
 # TBB
+if (NO_PARALLEL_STL)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DNO_PARALLEL_SORT")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNO_PARALLEL_SORT")
+else()
+    if (UNIX AND NOT APPLE AND NOT EMSCRIPTEN)
+        # Tracy does not use TBB directly, but the implementation of parallel algorithms
+        # in some versions of libstdc++ depends on TBB. When it does, you must
+        # explicitly link against -ltbb.
+        #
+        # Some distributions have pgk-config files for TBB, others don't.
 
-if (UNIX AND NOT APPLE AND NOT EMSCRIPTEN)
-    # Tracy does not use TBB directly, but the implementation of parallel algorithms
-    # in some versions of libstdc++ depends on TBB. When it does, you must
-    # explicitly link against -ltbb.
-    #
-    # Some distributions have pgk-config files for TBB, others don't.
-
-    pkg_check_modules(TBB tbb)
-    if (TBB_FOUND)
-        add_library(TracyTbb INTERFACE)
-        target_include_directories(TracyTbb INTERFACE ${TBB_INCLUDE_DIRS})
-        target_link_libraries(TracyTbb INTERFACE ${TBB_LINK_LIBRARIES})
-    else()
-        CPMAddPackage(
-            NAME tbb
-            GITHUB_REPOSITORY oneapi-src/oneTBB
-            GIT_TAG v2021.12.0-rc2
-            OPTIONS "TBB_TEST OFF"
-        )
-        add_library(TracyTbb INTERFACE)
-        target_link_libraries(TracyTbb INTERFACE tbb)
+        pkg_check_modules(TBB tbb)
+        if (TBB_FOUND)
+            add_library(TracyTbb INTERFACE)
+            target_include_directories(TracyTbb INTERFACE ${TBB_INCLUDE_DIRS})
+            target_link_libraries(TracyTbb INTERFACE ${TBB_LINK_LIBRARIES})
+        else()
+            CPMAddPackage(
+                NAME tbb
+                GITHUB_REPOSITORY oneapi-src/oneTBB
+                GIT_TAG v2021.12.0-rc2
+                OPTIONS "TBB_TEST OFF"
+            )
+            add_library(TracyTbb INTERFACE)
+            target_link_libraries(TracyTbb INTERFACE tbb)
+        endif()
     endif()
 endif()