[lua] support iOS triplets

ports/lua/CMakeLists.txt

@@ -79,7 +79,7 @@ INSTALL ( TARGETS lua
     ARCHIVE DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
 )
 
-IF (NOT DEFINED SKIP_INSTALL_TOOLS)
+IF (INSTALL_TOOLS)
     ADD_EXECUTABLE ( luac src/luac.c ${SRC_LIBLUA} ) # compiler uses non-exported APIs, so must include sources directly.
     ADD_EXECUTABLE ( luai src/lua.c )  # interpreter
     TARGET_LINK_LIBRARIES ( luai lua )

ports/lua/fix-ios-system.patch

@@ -0,0 +1,29 @@
+diff --git a/src/loslib.c b/src/loslib.c
+index e65e188..3595601 100644
+--- a/src/loslib.c
++++ b/src/loslib.c
+@@ -3,7 +3,9 @@
+ ** Standard Operating System library
+ ** See Copyright Notice in lua.h
+ */
+-
++#if defined(__APPLE__)
++#include <TargetConditionals.h>
++#endif
+ #define loslib_c
+ #define LUA_LIB
+
+@@ -143,7 +145,12 @@ static int os_execute (lua_State *L) {
+   const char *cmd = luaL_optstring(L, 1, NULL);
+   int stat;
+   errno = 0;
+-  stat = system(cmd);
++#if defined(__APPLE__) && !TARGET_OS_OSX
++   // system() is __IOS_PROHIBITED, __WATCHOS_PROHIBITED, and __TVOS_PROHIBITED.
++   stat = 127; // error: shell execution failed
++#else
++   stat = system(cmd);
++#endif
+   if (cmd != NULL)
+     return luaL_execresult(L, stat);
+   else {

ports/lua/portfile.cmake

@@ -6,41 +6,49 @@ vcpkg_download_distfile(ARCHIVE
 vcpkg_extract_source_archive_ex(
     OUT_SOURCE_PATH SOURCE_PATH
     ARCHIVE ${ARCHIVE}
-    PATCHES vs2015-impl-c99.patch
+    PATCHES
+        vs2015-impl-c99.patch
+        fix-ios-system.patch
 )
 
 file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
 
+vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
+  FEATURES
+    tools INSTALL_TOOLS
+)
+if(VCPKG_TARGET_IS_IOS AND "tools" IN_LIST FEATURES)
+    message(FATAL_ERROR "lua[tools] is not supported for iOS platform build")
+endif()
+
+set(ENABLE_LUA_CPP 0)
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     PREFER_NINJA
+    OPTIONS_RELEASE
+        ${FEATURE_OPTIONS}
     OPTIONS
         -DCOMPILE_AS_CPP=OFF
     OPTIONS_DEBUG
         -DSKIP_INSTALL_HEADERS=ON
-        -DSKIP_INSTALL_TOOLS=ON
 )
-
 vcpkg_install_cmake()
 
-set(ENABLE_LUA_CPP 0)
-if("cpp" IN_LIST FEATURES)
+if("cpp" IN_LIST FEATURES) # lua[cpp] will create lua-c++, which uses C++ name mangling.
     set(ENABLE_LUA_CPP 1)
     vcpkg_configure_cmake(
         SOURCE_PATH ${SOURCE_PATH}
         PREFER_NINJA
         OPTIONS
+            ${FEATURE_OPTIONS}
             -DCOMPILE_AS_CPP=ON
         OPTIONS_DEBUG
             -DSKIP_INSTALL_HEADERS=ON
-            -DSKIP_INSTALL_TOOLS=ON
     )
-
     vcpkg_install_cmake()
 endif()
 
 vcpkg_copy_pdbs()
-
 vcpkg_copy_tool_dependencies(${CURRENT_PACKAGES_DIR}/tools/lua)
 
 if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)

ports/lua/vcpkg.json

@@ -0,0 +1,15 @@
+{
+  "name": "lua",
+  "version-string": "5.4.3",
+  "port-version": 1,
+  "description": "A powerful, fast, lightweight, embeddable scripting language",
+  "homepage": "https://www.lua.org",
+  "features": {
+    "cpp": {
+      "description": "Builds Lua for C++ linkage"
+    },
+    "tools": {
+      "description": "Builds Lua compiler and interpreter"
+    }
+  }
+}

versions/baseline.json

@@ -3734,7 +3734,7 @@
     },
     "lua": {
       "baseline": "5.4.3",
-      "port-version": 0
+      "port-version": 1
     },
     "luabridge": {
       "baseline": "2.6",

versions/l-/lua.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "0e8966273a1a18cf591cf78046d345c74941a37d",
+      "version-string": "5.4.3",
+      "port-version": 1
+    },
     {
       "git-tree": "8a52fbd7ff551d4c1b7e6d308283cfe92ca81758",
       "version-string": "5.4.3",