[vcpkg baseline][hpx] Provide the correct dependencies when hpx chooses to use tcmalloc (#21673)

* [hpx] Always use the system malloc.

* Use tcmalloc rather than the system malloc when targeting Linux as requested by the hpx maintainers.

ports/hpx/portfile.cmake

@@ -9,6 +9,15 @@ vcpkg_from_github(
     HEAD_REF stable
 )
 
+set(HPX_WITH_MALLOC system)
+if(VCPKG_TARGET_IS_LINUX)
+    # This is done at the request of the hpx maintainers; see
+    # https://github.com/microsoft/vcpkg/pull/21673#issuecomment-979904882
+    # It must match when gperftools is treated as a dependency of this port.
+    set(HPX_WITH_MALLOC tcmalloc)
+endif()
+
+
 vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
@@ -17,6 +26,7 @@ vcpkg_cmake_configure(
         -DHPX_WITH_EXAMPLES=OFF
         -DHPX_WITH_TOOLS=OFF
         -DHPX_WITH_RUNTIME=OFF
+        "-DHPX_WITH_MALLOC=${HPX_WITH_MALLOC}"
 )
 
 vcpkg_cmake_install()

ports/hpx/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "hpx",
   "version-semver": "1.7.1",
-  "port-version": 1,
+  "port-version": 2,
   "description": [
     "The C++ Standards Library for Concurrency and Parallelism",
     "HPX is a C++ Standards Library for Concurrency and Parallelism. It implements all of the corresponding facilities as defined by the C++ Standard. Additionally, in HPX we implement functionalities proposed as part of the ongoing C++ standardization process. We also extend the C++ Standard APIs to the distributed case."
@@ -23,6 +23,10 @@
     "boost-throw-exception",
     "boost-variant",
     "boost-winapi",
+    {
+      "name": "gperftools",
+      "platform": "linux"
+    },
     "hwloc",
     {
       "name": "vcpkg-cmake",

versions/baseline.json

@@ -2698,7 +2698,7 @@
     },
     "hpx": {
       "baseline": "1.7.1",
-      "port-version": 1
+      "port-version": 2
     },
     "http-parser": {
       "baseline": "2.9.4",

versions/h-/hpx.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "e3376f2a4ca78e32a29511450453e154cdb08a2a",
+      "version-semver": "1.7.1",
+      "port-version": 2
+    },
     {
       "git-tree": "739c83940b3bc753e7b1ada7192dd0c36970c9f5",
       "version-semver": "1.7.1",