diff --git a/azure-pipelines/e2e-ports/env-scripts/env-cmake-script.cmake b/azure-pipelines/e2e-ports/env-scripts/env-cmake-script.cmake
new file mode 100644
index 0000000000..65238a0393
--- /dev/null
+++ b/azure-pipelines/e2e-ports/env-scripts/env-cmake-script.cmake
@@ -0,0 +1,2 @@
+
+file(WRITE "${BUILDTREES_DIR}/env-script.log" "DOWNLOADS:${DOWNLOADS}")
diff --git a/azure-pipelines/e2e-ports/env-scripts/env-scripts.cmake b/azure-pipelines/e2e-ports/env-scripts/env-scripts.cmake
new file mode 100644
index 0000000000..38b9a0a26c
--- /dev/null
+++ b/azure-pipelines/e2e-ports/env-scripts/env-scripts.cmake
@@ -0,0 +1,15 @@
+set(VCPKG_TARGET_ARCHITECTURE x64)
+set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_LIBRARY_LINKAGE dynamic)
+if(APPLE)
+set(VCPKG_CMAKE_SYSTEM_NAME Darwin)
+elseif(UNIX)
+set(VCPKG_CMAKE_SYSTEM_NAME Linux)
+endif()
+
+set(script_ext ".bat" )
+if(UNIX)
+ set(script_ext "" )
+endif()
+set(VCPKG_ENVIRONMENT_SETUP_SCRIPTS "${CMAKE_CURRENT_LIST_DIR}/env-set-script${script_ext}")
+list(APPEND VCPKG_ENVIRONMENT_SETUP_SCRIPTS "${CMAKE_CURRENT_LIST_DIR}/env-cmake-script.cmake")
diff --git a/azure-pipelines/e2e-ports/env-scripts/env-set-script b/azure-pipelines/e2e-ports/env-scripts/env-set-script
new file mode 100644
index 0000000000..25a1f173e6
--- /dev/null
+++ b/azure-pipelines/e2e-ports/env-scripts/env-set-script
@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+export VCPKG_ENV_TEST=TRUE
+export VCPKG_ENV_TEST2=MORE_TESTING
diff --git a/azure-pipelines/e2e-ports/env-scripts/env-set-script.bat b/azure-pipelines/e2e-ports/env-scripts/env-set-script.bat
new file mode 100644
index 0000000000..c01be61258
--- /dev/null
+++ b/azure-pipelines/e2e-ports/env-scripts/env-set-script.bat
@@ -0,0 +1,2 @@
+set VCPKG_ENV_TEST=TRUE
+set VCPKG_ENV_TEST2=MORE_TESTING
diff --git a/azure-pipelines/e2e-ports/env-scripts/test-env-scripts/portfile.cmake b/azure-pipelines/e2e-ports/env-scripts/test-env-scripts/portfile.cmake
new file mode 100644
index 0000000000..afa4a998ac
--- /dev/null
+++ b/azure-pipelines/e2e-ports/env-scripts/test-env-scripts/portfile.cmake
@@ -0,0 +1,16 @@
+set(VCPKG_POLICY_EMPTY_PACKAGE enabled)
+
+if(NOT DEFINED ENV{VCPKG_ENV_TEST} AND NOT "$ENV{VCPKG_ENV_TEST}" STREQUAL "TRUE")
+    message(FATAL_ERROR "ENV{VCPKG_ENV_TEST} not set or has wrong value of '$ENV{VCPKG_ENV_TEST}' (expected TRUE)")
+endif()
+
+if(NOT DEFINED ENV{VCPKG_ENV_TEST2} AND NOT "$ENV{VCPKG_ENV_TEST2}" STREQUAL "MORE_TESTING")
+    message(FATAL_ERROR "ENV{VCPKG_ENV_TEST2} not set or has wrong value of '$ENV{VCPKG_ENV_TEST2}' (expected MORE_TESTING)")
+endif()
+
+file(READ "${CURRENT_BUILDTREES_DIR}/../env-script.log" contents)
+file(REMOVE "${CURRENT_BUILDTREES_DIR}/../env-script.log")
+
+if(NOT contents STREQUAL "DOWNLOADS:${DOWNLOADS}")
+    message(FATAL_ERROR "contents (${contents}) of 'env-script.log' are not equal to 'DOWNLOADS:${DOWNLOADS}'")
+endif()
diff --git a/azure-pipelines/e2e-ports/env-scripts/test-env-scripts/vcpkg.json b/azure-pipelines/e2e-ports/env-scripts/test-env-scripts/vcpkg.json
new file mode 100644
index 0000000000..028ffa718a
--- /dev/null
+++ b/azure-pipelines/e2e-ports/env-scripts/test-env-scripts/vcpkg.json
@@ -0,0 +1,5 @@
+{
+    "name": "test-env-scripts",
+    "version": "0",
+    "description": "A port that tests VCPKG_ENVIRONMENT_SETUP_SCRIPTS"
+}
diff --git a/azure-pipelines/end-to-end-tests-dir/env-scripts.ps1 b/azure-pipelines/end-to-end-tests-dir/env-scripts.ps1
new file mode 100644
index 0000000000..6cea85e492
--- /dev/null
+++ b/azure-pipelines/end-to-end-tests-dir/env-scripts.ps1
@@ -0,0 +1,4 @@
+. $PSScriptRoot/../end-to-end-tests-prelude.ps1
+
+Run-Vcpkg @directoryArgs "--overlay-triplets=$PSScriptRoot/../e2e-ports/env-scripts" "--overlay-ports=$PSScriptRoot/../e2e-ports/env-scripts" x-set-installed test-env-scripts --triplet env-scripts --binarysource=clear --debug
+Throw-IfFailed
diff --git a/include/vcpkg/base/contractual-constants.h b/include/vcpkg/base/contractual-constants.h
index 0dd0489ffa..b6ac67cb5e 100644
--- a/include/vcpkg/base/contractual-constants.h
+++ b/include/vcpkg/base/contractual-constants.h
@@ -365,6 +365,7 @@ namespace vcpkg
     inline constexpr StringLiteral CMakeVariableEditable = "_VCPKG_EDITABLE";
     inline constexpr StringLiteral CMakeVariableEnvPassthrough = "VCPKG_ENV_PASSTHROUGH";
     inline constexpr StringLiteral CMakeVariableEnvPassthroughUntracked = "VCPKG_ENV_PASSTHROUGH_UNTRACKED";
+    inline constexpr StringLiteral CMakeVariableEnvSetupScripts = "VCPKG_ENVIRONMENT_SETUP_SCRIPTS";
     inline constexpr StringLiteral CMakeVariableFeatures = "FEATURES";
     inline constexpr StringLiteral CMakeVariableFilename = "FILENAME";
     inline constexpr StringLiteral CMakeVariableGit = "GIT";
diff --git a/include/vcpkg/base/message-data.inc.h b/include/vcpkg/base/message-data.inc.h
index 8c276c2b09..d480ef07f0 100644
--- a/include/vcpkg/base/message-data.inc.h
+++ b/include/vcpkg/base/message-data.inc.h
@@ -1840,6 +1840,11 @@ DECLARE_MESSAGE(InvalidCommentStyle,
                 "comments.")
 DECLARE_MESSAGE(InvalidCommitId, (msg::commit_sha), "", "Invalid commit id: {commit_sha}")
 DECLARE_MESSAGE(InvalidDefaultFeatureName, (), "", "'default' is a reserved feature name")
+DECLARE_MESSAGE(InvalidEnvSetupScripts,
+                (msg::path),
+                "",
+                "Variable VCPKG_ENVIRONMENT_SETUP_SCRIPTS contains invalid file path: '{path}'. The value must be "
+                "an absolute path to an existent file.")
 DECLARE_MESSAGE(InvalidFeature,
                 (),
                 "",
@@ -2829,11 +2834,16 @@ DECLARE_MESSAGE(VcpkgRegistriesCacheIsNotDirectory,
 DECLARE_MESSAGE(VcpkgRootRequired, (), "", "Setting VCPKG_ROOT is required for standalone bootstrap.")
 DECLARE_MESSAGE(VcpkgRootsDir, (msg::env_var), "", "The vcpkg root directory (default: {env_var})")
 DECLARE_MESSAGE(VcpkgSendMetricsButDisabled, (), "", "passed --sendmetrics, but metrics are disabled.")
-DECLARE_MESSAGE(VcvarsRunFailed, (), "", "failed to run vcvarsall.bat to get a Visual Studio environment")
-DECLARE_MESSAGE(VcvarsRunFailedExitCode,
-                (msg::exit_code),
+DECLARE_MESSAGE(CmdRunFailed, (msg::command_name, msg::error_msg), "", "failed to run '{command_name}' ({error_msg}).")
+DECLARE_MESSAGE(CmdRunFailedExitCode, (msg::command_name, msg::exit_code), "", "'{command_name}' returned {exit_code}.")
+DECLARE_MESSAGE(CaptureCmdRunFailed,
+                (msg::command_name, msg::error_msg),
+                "",
+                "failed to run '{command_name}' to get environment ({error_msg}).")
+DECLARE_MESSAGE(CaptureCmdEnvFailedExitCode,
+                (msg::command_name, msg::exit_code),
                 "",
-                "while trying to get a Visual Studio environment, vcvarsall.bat returned {exit_code}")
+                "while trying to capture an environment, '{command_name}' returned {exit_code}.")
 DECLARE_MESSAGE(VersionBaselineMismatch,
                 (msg::expected, msg::actual, msg::package_name),
                 "{expected} and {actual} are versions",
diff --git a/include/vcpkg/base/system.process.h b/include/vcpkg/base/system.process.h
index 568738de33..760e980c56 100644
--- a/include/vcpkg/base/system.process.h
+++ b/include/vcpkg/base/system.process.h
@@ -122,9 +122,7 @@ namespace vcpkg
     ExpectedL<int> cmd_execute(const Command& cmd);
     ExpectedL<int> cmd_execute(const Command& cmd, const ProcessLaunchSettings& settings);
 
-#if defined(_WIN32)
     Environment cmd_execute_and_capture_environment(const Command& cmd, const Environment& env);
-#endif
 
     void cmd_execute_background(const Command& cmd_line);
 
diff --git a/include/vcpkg/commands.build.h b/include/vcpkg/commands.build.h
index 67f3388a74..cbe21556ad 100644
--- a/include/vcpkg/commands.build.h
+++ b/include/vcpkg/commands.build.h
@@ -132,6 +132,7 @@ namespace vcpkg
         Optional<std::string> public_abi_override;
         std::vector<std::string> passthrough_env_vars;
         std::vector<std::string> passthrough_env_vars_tracked;
+        std::vector<std::string> environment_setup_scripts;
         std::vector<Path> hash_additional_files;
         Optional<Path> gamedk_latest_path;
 
@@ -143,6 +144,7 @@ namespace vcpkg
     };
 
     vcpkg::Command make_build_env_cmd(const PreBuildInfo& pre_build_info, const Toolset& toolset);
+    vcpkg::Command make_setup_env_cmd(const VcpkgPaths& paths, const Path& script);
 
     struct ExtendedBuildResult
     {
@@ -284,7 +286,6 @@ namespace vcpkg
 
         const TripletMapEntry& get_triplet_cache(const ReadOnlyFilesystem& fs, const Path& p) const;
 
-#if defined(_WIN32)
         struct EnvMapEntry
         {
             std::unordered_map<std::string, std::string> env_map;
@@ -292,7 +293,6 @@ namespace vcpkg
         };
 
         Cache<std::vector<std::string>, EnvMapEntry> envs;
-#endif
 
         bool m_compiler_tracking;
     };
diff --git a/locales/messages.json b/locales/messages.json
index 0d82c56f8a..3f2bde5444 100644
--- a/locales/messages.json
+++ b/locales/messages.json
@@ -265,6 +265,10 @@
   "_CMakeToolChainFile.comment": "An example of {path} is /foo/bar.",
   "CMakeUsingExportedLibs": "To use exported libraries in CMake projects, add {value} to your CMake command line.",
   "_CMakeUsingExportedLibs.comment": "{value} is a CMake command line switch of the form -DFOO=BAR",
+  "CaptureCmdEnvFailedExitCode": "while trying to capture an environment, '{command_name}' returned {exit_code}.",
+  "_CaptureCmdEnvFailedExitCode.comment": "An example of {command_name} is install. An example of {exit_code} is 127.",
+  "CaptureCmdRunFailed": "failed to run '{command_name}' to get environment ({error_msg}).",
+  "_CaptureCmdRunFailed.comment": "An example of {command_name} is install. An example of {error_msg} is File Not Found.",
   "CheckedOutGitSha": "Checked out Git SHA: {commit_sha}",
   "_CheckedOutGitSha.comment": "An example of {commit_sha} is 7cfad47ae9f68b183983090afd6337cd60fd4949.",
   "CheckedOutObjectMissingManifest": "The checked-out object does not contain a CONTROL file or vcpkg.json file.",
@@ -454,6 +458,10 @@
   "CmdRemoveOptDryRun": "Prints the packages to be removed, but does not remove them",
   "CmdRemoveOptOutdated": "Removes all packages with versions that do not match the built-in registry",
   "CmdRemoveOptRecurse": "Allows removal of dependent packages not explicitly specified",
+  "CmdRunFailed": "failed to run '{command_name}' ({error_msg}).",
+  "_CmdRunFailed.comment": "An example of {command_name} is install. An example of {error_msg} is File Not Found.",
+  "CmdRunFailedExitCode": "'{command_name}' returned {exit_code}.",
+  "_CmdRunFailedExitCode.comment": "An example of {command_name} is install. An example of {exit_code} is 127.",
   "CmdSearchExample1": "vcpkg search <pattern>",
   "_CmdSearchExample1.comment": "This is a command line, only the part <pattern> should be localized.",
   "CmdSetInstalledExample1": "vcpkg x-set-installed <package name> <package name>...",
@@ -1032,6 +1040,8 @@
   "InvalidCommitId": "Invalid commit id: {commit_sha}",
   "_InvalidCommitId.comment": "An example of {commit_sha} is 7cfad47ae9f68b183983090afd6337cd60fd4949.",
   "InvalidDefaultFeatureName": "'default' is a reserved feature name",
+  "InvalidEnvSetupScripts": "Variable VCPKG_ENVIRONMENT_SETUP_SCRIPTS contains invalid file path: '{path}'. The value must be an absolute path to an existent file.",
+  "_InvalidEnvSetupScripts.comment": "An example of {path} is /foo/bar.",
   "InvalidFeature": "features must be lowercase alphanumeric+hyphens, and not one of the reserved names",
   "InvalidFileType": "failed: {path} cannot handle file type",
   "_InvalidFileType.comment": "An example of {path} is /foo/bar.",
@@ -1568,9 +1578,6 @@
   "VcpkgSendMetricsButDisabled": "passed --sendmetrics, but metrics are disabled.",
   "VcpkgUsage": "usage: vcpkg <command> [--switches] [--options=values] [arguments] @response_file",
   "_VcpkgUsage.comment": "This is describing a command line, everything should be localized except 'vcpkg'; symbols like <>s, []s, or --s should be preserved. @response_file should be localized to be consistent with the message named 'ResponseFileCode'.",
-  "VcvarsRunFailed": "failed to run vcvarsall.bat to get a Visual Studio environment",
-  "VcvarsRunFailedExitCode": "while trying to get a Visual Studio environment, vcvarsall.bat returned {exit_code}",
-  "_VcvarsRunFailedExitCode.comment": "An example of {exit_code} is 127.",
   "VersionBaselineMismatch": "The latest version is {expected}, but the baseline file contains {actual}.\nRun:\nvcpkg x-add-version {package_name}\ngit add versions\ngit commit -m \"Update version database\"\nto update the baseline version.",
   "_VersionBaselineMismatch.comment": "{expected} and {actual} are versions An example of {package_name} is zlib.",
   "VersionBuiltinPortTreeEntryMissing": "no version database entry for {package_name} at {expected}; using the checked out ports tree version ({actual}).",
diff --git a/src/vcpkg/base/system.process.cpp b/src/vcpkg/base/system.process.cpp
index 38f003fefc..e17536ea26 100644
--- a/src/vcpkg/base/system.process.cpp
+++ b/src/vcpkg/base/system.process.cpp
@@ -1256,38 +1256,46 @@ namespace
 
 namespace vcpkg
 {
-#if defined(_WIN32)
     Environment cmd_execute_and_capture_environment(const Command& cmd, const Environment& env)
     {
         static StringLiteral magic_string = "cdARN4xjKueKScMy9C6H";
 
         Command actual_cmd = cmd;
+#ifdef _WIN32
         actual_cmd.raw_arg(Strings::concat(" & echo ", magic_string, " & set"));
-
+#else
+        actual_cmd.raw_arg(Strings::concat(" && echo ", magic_string, " && printenv"));
+#endif
         Debug::print("command line: ", actual_cmd.command_line(), "\n");
 
         RedirectedProcessLaunchSettings settings;
         settings.environment = env;
+#ifdef _WIN32
         settings.create_new_console = CreateNewConsole::Yes;
+#endif
         auto maybe_rc_output = cmd_execute_and_capture_output(actual_cmd, settings);
         if (!maybe_rc_output)
         {
-            Checks::msg_exit_with_error(
-                VCPKG_LINE_INFO, msg::format(msgVcvarsRunFailed).append_raw("\n").append(maybe_rc_output.error()));
+            Checks::msg_exit_with_error(VCPKG_LINE_INFO,
+                                        msgCaptureCmdRunFailed,
+                                        msg::command_name = actual_cmd.command_line(),
+                                        msg::error_msg = maybe_rc_output.error());
         }
 
         auto& rc_output = maybe_rc_output.value_or_exit(VCPKG_LINE_INFO);
         Debug::print(rc_output.output, "\n");
         if (rc_output.exit_code != 0)
         {
-            Checks::msg_exit_with_error(
-                VCPKG_LINE_INFO, msgVcvarsRunFailedExitCode, msg::exit_code = rc_output.exit_code);
+            Checks::msg_exit_with_error(VCPKG_LINE_INFO,
+                                        msgCaptureCmdEnvFailedExitCode,
+                                        msg::command_name = actual_cmd.command_line(),
+                                        msg::exit_code = rc_output.exit_code);
         }
 
         auto it = Strings::search(rc_output.output, magic_string);
         const char* const last = rc_output.output.data() + rc_output.output.size();
 
-        Checks::check_exit(VCPKG_LINE_INFO, it != last);
+        Checks::check_exit(VCPKG_LINE_INFO, it != last); // magic string not found !
         // find the first non-whitespace character after the magic string
         it = std::find_if_not(it + magic_string.size(), last, ::isspace);
         Checks::check_exit(VCPKG_LINE_INFO, it != last);
@@ -1299,7 +1307,11 @@ namespace vcpkg
             auto equal_it = std::find(it, last, '=');
             if (equal_it == last) break;
             StringView variable_name(it, equal_it);
+#ifdef _WIN32
             auto newline_it = std::find(equal_it + 1, last, '\r');
+#else
+            auto newline_it = std::find(equal_it + 1, last, '\n');
+#endif
             if (newline_it == last) break;
             StringView value(equal_it + 1, newline_it);
 
@@ -1311,7 +1323,6 @@ namespace vcpkg
 
         return new_env;
     }
-#endif
 } // namespace vcpkg
 
 namespace
diff --git a/src/vcpkg/cmakevars.cpp b/src/vcpkg/cmakevars.cpp
index 1c321a0d78..53bfb84812 100644
--- a/src/vcpkg/cmakevars.cpp
+++ b/src/vcpkg/cmakevars.cpp
@@ -151,6 +151,7 @@ VCPKG_ENV_PASSTHROUGH=${VCPKG_ENV_PASSTHROUGH}
 VCPKG_ENV_PASSTHROUGH_UNTRACKED=${VCPKG_ENV_PASSTHROUGH_UNTRACKED}
 VCPKG_LOAD_VCVARS_ENV=${VCPKG_LOAD_VCVARS_ENV}
 VCPKG_DISABLE_COMPILER_TRACKING=${VCPKG_DISABLE_COMPILER_TRACKING}
+VCPKG_ENVIRONMENT_SETUP_SCRIPTS=${VCPKG_ENVIRONMENT_SETUP_SCRIPTS}
 VCPKG_HASH_ADDITIONAL_FILES=${VCPKG_HASH_ADDITIONAL_FILES}
 VCPKG_XBOX_CONSOLE_TARGET=${VCPKG_XBOX_CONSOLE_TARGET}
 Z_VCPKG_GameDKLatest=$ENV{GameDKLatest}
diff --git a/src/vcpkg/commands.build.cpp b/src/vcpkg/commands.build.cpp
index 7fc24876c5..1efa638e9f 100644
--- a/src/vcpkg/commands.build.cpp
+++ b/src/vcpkg/commands.build.cpp
@@ -470,16 +470,81 @@ namespace vcpkg
         return base_env.cmd_cache.get_lazy(build_env_cmd, [&]() {
             const Path& powershell_exe_path = paths.get_tool_exe("powershell-core", out_sink);
             auto clean_env = get_modified_clean_environment(base_env.env_map, powershell_exe_path.parent_path());
-            if (build_env_cmd.empty())
-                return clean_env;
-            else
-                return cmd_execute_and_capture_environment(build_env_cmd, clean_env);
+            auto action_env =
+                build_env_cmd.empty() ? clean_env : cmd_execute_and_capture_environment(build_env_cmd, clean_env);
+            for (const auto& env_setup_script : pre_build_info.environment_setup_scripts)
+            {
+                const auto env_setup_cmd = make_setup_env_cmd(paths, env_setup_script);
+                if (vcpkg::Strings::ends_with(env_setup_script, ".cmake"))
+                {
+                    ProcessLaunchSettings settings;
+                    settings.environment = action_env;
+                    auto cmd_res_output = cmd_execute(env_setup_cmd, settings);
+                    if (!cmd_res_output)
+                    {
+                        Checks::msg_exit_with_error(VCPKG_LINE_INFO,
+                                                    msgCmdRunFailed,
+                                                    msg::command_name = env_setup_cmd.command_line(),
+                                                    msg::error_msg = cmd_res_output.error());
+                    }
+                    if (auto err_code = cmd_res_output.value(VCPKG_LINE_INFO); err_code != 0)
+                    {
+                        Checks::msg_exit_with_error(VCPKG_LINE_INFO,
+                                                    msgCmdRunFailedExitCode,
+                                                    msg::command_name = env_setup_cmd.command_line(),
+                                                    msg::exit_code = err_code);
+                    }
+                }
+                else
+                {
+                    action_env = cmd_execute_and_capture_environment(env_setup_cmd, action_env);
+                }
+            }
+            return action_env;
         });
     }
 #else
-    const Environment& EnvCache::get_action_env(const VcpkgPaths&, const PreBuildInfo&, const Toolset&)
+    const Environment& EnvCache::get_action_env(const VcpkgPaths& paths,
+                                                const PreBuildInfo& pre_build_info,
+                                                const Toolset&)
     {
-        return get_clean_environment();
+        auto action_env = get_clean_environment();
+        const auto& base_env = envs.get_lazy(pre_build_info.environment_setup_scripts, []() { return EnvMapEntry{}; });
+
+        // I think this should be done differently but I don't exactly know how to build the commands beforehand.
+        // Can I stack base_env.cmd_cache.get_lazy in a loop?
+
+        return base_env.cmd_cache.get_lazy(vcpkg::Command{}, [&]() {
+            for (const auto& env_setup_script : pre_build_info.environment_setup_scripts)
+            {
+                const auto env_setup_cmd = make_setup_env_cmd(paths, env_setup_script);
+                if (vcpkg::Strings::ends_with(env_setup_script, ".cmake"))
+                {
+                    ProcessLaunchSettings settings;
+                    settings.environment = action_env;
+                    auto cmd_res_output = cmd_execute(env_setup_cmd, settings);
+                    if (!cmd_res_output)
+                    {
+                        Checks::msg_exit_with_error(VCPKG_LINE_INFO,
+                                                    msgCmdRunFailed,
+                                                    msg::command_name = env_setup_cmd.command_line(),
+                                                    msg::error_msg = cmd_res_output.error());
+                    }
+                    if (auto err_code = cmd_res_output.value(VCPKG_LINE_INFO); err_code != 0)
+                    {
+                        Checks::msg_exit_with_error(VCPKG_LINE_INFO,
+                                                    msgCmdRunFailedExitCode,
+                                                    msg::command_name = env_setup_cmd.command_line(),
+                                                    msg::exit_code = err_code);
+                    }
+                }
+                else
+                {
+                    action_env = cmd_execute_and_capture_environment(env_setup_cmd, action_env);
+                }
+            }
+            return action_env;
+        });
     }
 #endif
 
@@ -589,6 +654,32 @@ namespace vcpkg
 #endif
     }
 
+    vcpkg::Command make_setup_env_cmd(const VcpkgPaths& paths, const Path& script)
+    {
+        vcpkg::Command env_setup_cmd;
+        const auto& fs = paths.get_filesystem();
+
+        if (script.is_relative() || !fs.is_regular_file(script))
+        {
+            Checks::msg_exit_with_message(VCPKG_LINE_INFO, msgInvalidEnvSetupScripts, msg::path = script);
+        }
+
+        if (script.extension() == ".cmake")
+        {
+            env_setup_cmd = vcpkg::make_cmake_cmd(paths, script, {});
+        }
+        else
+        {
+#ifdef _WIN32
+            env_setup_cmd = vcpkg::Command{"cmd"}.string_arg("/d").string_arg("/c");
+            env_setup_cmd.raw_arg(fmt::format(R"("{}" 2>&1 <NUL)", script));
+#else
+            env_setup_cmd = vcpkg::Command{"."}.raw_arg(fmt::format(R"({} 2>&1 </dev/null)", script));
+#endif
+        }
+        return env_setup_cmd;
+    }
+
     static std::vector<PackageSpec> fspecs_to_pspecs(View<FeatureSpec> fspecs)
     {
         std::set<PackageSpec> set;
@@ -837,7 +928,7 @@ namespace vcpkg
 
     bool PreBuildInfo::using_vcvars() const
     {
-        return (!external_toolchain_file.has_value() || load_vcvars_env) &&
+        return (!external_toolchain_file.has_value() || !environment_setup_scripts.empty() || load_vcvars_env) &&
                (cmake_system_name.empty() || cmake_system_name == "WindowsStore");
     }
 
@@ -1833,6 +1924,11 @@ namespace vcpkg
             Util::Vectors::append(&passthrough_env_vars, Strings::split(*value, ';'));
         }
 
+        if (auto value = Util::value_if_set_and_nonempty(cmakevars, CMakeVariableEnvSetupScripts))
+        {
+            Util::Vectors::append(&environment_setup_scripts, Strings::split(*value, ';'));
+        }
+
         Util::assign_if_set_and_nonempty(public_abi_override, cmakevars, CMakeVariablePublicAbiOverride);
         if (auto value = Util::value_if_set_and_nonempty(cmakevars, CMakeVariableHashAdditionalFiles))
         {
diff --git a/src/vcpkg/vcpkgcmdarguments.cpp b/src/vcpkg/vcpkgcmdarguments.cpp
index 4247cf9018..843859b22b 100644
--- a/src/vcpkg/vcpkgcmdarguments.cpp
+++ b/src/vcpkg/vcpkgcmdarguments.cpp
@@ -710,8 +710,11 @@ namespace vcpkg
                 obj.insert(JsonIdVcpkgDisableMetrics, Json::Value::boolean(true));
             }
 
-            set_environment_variable(EnvironmentVariableXVcpkgRecursiveData,
-                                     Json::stringify(obj, Json::JsonStyle::with_spaces(0)));
+            // Remove newlines from JSON so that environment can be captured on !windows
+            auto json_str = Json::stringify(obj, Json::JsonStyle::with_spaces(0));
+            std::replace(json_str.begin(), json_str.end(), '\n', ' ');
+
+            set_environment_variable(EnvironmentVariableXVcpkgRecursiveData, std::move(json_str));
         }
     }