1 files changed, 36 insertions, 0 deletions
diff --git a/vcpkg/scripts/cmake/z_vcpkg_function_arguments.cmake b/vcpkg/scripts/cmake/z_vcpkg_function_arguments.cmake
new file mode 100644
index 0000000..45e60a2
--- /dev/null
+++ b/vcpkg/scripts/cmake/z_vcpkg_function_arguments.cmake
@@ -0,0 +1,36 @@
+# NOTE: this function definition is copied directly to scripts/buildsystems/vcpkg.cmake
+# do not make changes here without making the same change there.
+macro(z_vcpkg_function_arguments OUT_VAR)
+    if("${ARGC}" EQUAL 1)
+        set(z_vcpkg_function_arguments_FIRST_ARG 0)
+    elseif("${ARGC}" EQUAL 2)
+        set(z_vcpkg_function_arguments_FIRST_ARG "${ARGV1}")
+
+        if(NOT z_vcpkg_function_arguments_FIRST_ARG GREATER_EQUAL "0" AND NOT z_vcpkg_function_arguments_FIRST_ARG LESS "0")
+            message(FATAL_ERROR "z_vcpkg_function_arguments: index (${z_vcpkg_function_arguments_FIRST_ARG}) is not a number")
+        elseif(z_vcpkg_function_arguments_FIRST_ARG LESS "0" OR z_vcpkg_function_arguments_FIRST_ARG GREATER ARGC)
+            message(FATAL_ERROR "z_vcpkg_function_arguments: index (${z_vcpkg_function_arguments_FIRST_ARG}) out of range")
+        endif()
+    else()
+        # vcpkg bug
+        message(FATAL_ERROR "z_vcpkg_function_arguments: invalid arguments (${ARGV})")
+    endif()
+
+    set("${OUT_VAR}" "")
+
+    # this allows us to get the value of the enclosing function's ARGC
+    set(z_vcpkg_function_arguments_ARGC_NAME "ARGC")
+    set(z_vcpkg_function_arguments_ARGC "${${z_vcpkg_function_arguments_ARGC_NAME}}")
+
+    math(EXPR z_vcpkg_function_arguments_LAST_ARG "${z_vcpkg_function_arguments_ARGC} - 1")
+    # GREATER_EQUAL added in CMake 3.7
+    if(NOT z_vcpkg_function_arguments_LAST_ARG LESS z_vcpkg_function_arguments_FIRST_ARG)
+        foreach(z_vcpkg_function_arguments_N RANGE "${z_vcpkg_function_arguments_FIRST_ARG}" "${z_vcpkg_function_arguments_LAST_ARG}")
+            string(REPLACE ";" "\\;" z_vcpkg_function_arguments_ESCAPED_ARG "${ARGV${z_vcpkg_function_arguments_N}}")
+            # adds an extra ";" on the front
+            set("${OUT_VAR}" "${${OUT_VAR}};${z_vcpkg_function_arguments_ESCAPED_ARG}")
+        endforeach()
+        # and then removes that extra semicolon
+        string(SUBSTRING "${${OUT_VAR}}" 1 -1 "${OUT_VAR}")
+    endif()
+endmacro()