HaxeFoundation · Simn · Jan 31, 2026 · Aug 22, 2025 · Jan 31, 2026 · Jan 31, 2026
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -221,3 +221,16 @@ jobs:
         run: haxe compile-cpp.hxml -D ${{ env.HXCPP_ARCH_FLAG }} -D no_http
       - name: run
         run: bin${{ inputs.sep }}cpp${{ inputs.sep }}TestMain-debug
+  build_tool:
+    runs-on: ${{ inputs.os }}
+    name: build tool tests
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+      - name: setup
+        uses: ./.github/workflows/setup
+        with:
+          haxe: ${{ inputs.haxe }}
+      - name: test c/cxx_standard attributes
+        working-directory: test/cxx_standard
+        run: haxelib run hxcpp Build.xml
diff --git a/.gitignore b/.gitignore
@@ -29,6 +29,11 @@ hxcpp.n
 
 .vscode
 
+test/cxx_standard/main
+test/cxx_standard/main.hash
+test/cxx_standard/main.exe
+test/cxx_standard/main.exe.hash
+
 # Created by https://www.toptal.com/developers/gitignore/api/visualstudio
 # Edit at https://www.toptal.com/developers/gitignore?templates=visualstudio
 

diff --git a/docs/build_xml/Defines.md b/docs/build_xml/Defines.md
@@ -37,8 +37,10 @@ Defines affecting how the code is compiled.  These can be on the command line wh
 | *HXCPP_CHECK_POINTER*   | Add null-pointer checks,even in release mode. |
 | *HXCPP_PROFILER*        | Add profiler support |
 | *HXCPP_TELEMETRY*       | Add telemetry support |
-| *HXCPP_CPP11*           | Use c++11 features and link libraries |
-| *HXCPP_CPP17*           | Use c++17 features and link libraries |
+| *HXCPP_C_STANDARD*      | Set default C standard |
+| *HXCPP_CXX_STANDARD*    | Set default C++ standard |
+| *HXCPP_OBJC_STANDARD*   | Set default Objective-C standard |
+| *HXCPP_OBJCXX_STANDARD* | Set default Objective-C++ standard |
 | *exe_link*              | Generate executable file (rather than dynamic library on android) |
 | *static_link*           | Generate static library |
 | *dll_link*              | Generate dynamic library |

diff --git a/docs/build_xml/Files.md b/docs/build_xml/Files.md
@@ -2,6 +2,20 @@ Files
 ------
 The files node defines a group of files that all share the same attributes, including relative directory, default compiler flags and dependencies.  The node can be used to define a set of header files on which other files can depend, or a set of source files to be compiled and included in a target.
 
+```xml
+<files id="foo" cxx_standard="14">
+  <file name="foo.cpp"/>
+  <file name="bar.c"/>
+</files>
+```
+
+#### Attributes
+
+  + `c_standard` = Default C standard for the file group
+  + `cxx_standard` = Default C++ standard for the file group
+  + `objc_standard` = Default Objective-C standard for the file group
+  + `objcxx_standard` = Default Objective-C++ standard for the file group
+#### Nodes
 - *depend* - Declare that all files in the group depend on another file or another file group.
   ```xml
   <depend name="filename" />
@@ -80,13 +94,17 @@ The files node defines a group of files that all share the same attributes, incl
 
 - *file* - Add file to group, with optional attributes
   ```xml
-  <file name="filename" tags="tag,tag1" filterout="define" embedName="embed" >
+  <file name="filename" tags="tag,tag1" filterout="define" embedName="embed" cxx_standard="17">
      <depend name="filename1" />
      <depend name="filename2" />
   </file>
   ```
      + name = name of file - may be absolute or relative to files.dir
      + tags = optional override of group tags.  See [Tags.md](Tags.md).
+     + `c_standard` = C standard for the file
+     + `cxx_standard` = C++ standard for the file
+     + `objc_standard` = Objective-C standard for the file
+     + `objcxx_standard` = Objective-C++ standard for the file
      + filterout = allows files to be skipped at compile-time if the named define exists.
        This is useful when the define is set sometime after the file list is parsed.
      + depend name = filename of additional dependency

diff --git a/test/RunTests.hx b/test/RunTests.hx
@@ -114,6 +114,11 @@ class RunTests
       command("cpp64"+sep+"Test",[]);
    }
 
+   public static function cxx_standard() {
+      setDir("cxx_standard");
+      command("haxelib", ["run", "hxcpp", "Build.xml"]);
+   }
+
 
    public static function setDir(name:String)
    {
@@ -199,6 +204,7 @@ class RunTests
       run("std64", std64);
       run("native", native);
       run("debugger", debugger);
+      run("cxx_standard", cxx_standard);
 
       Sys.println("");
 

diff --git a/test/cxx_standard/Build.xml b/test/cxx_standard/Build.xml
@@ -0,0 +1,15 @@
+<xml>
+	<files id="test" cxx_standard="17">
+		<compilerflag value="/Zc:__cplusplus" if="isMsvc" />
+		<file name="main.cpp" />
+		<file name="cxx14.cpp" cxx_standard="14" />
+		<file name="c11.c" c_standard="11" />
+		<file name="c17.c" c_standard="17" />
+	</files>
+
+	<set name="EXESUFFIX" value=".exe" if="windows" />
+
+	<target id="default" tool="linker" toolid="exe" output="main${EXESUFFIX}">
+		<files id="test"/>
+	</target>
+</xml>
diff --git a/test/cxx_standard/c11.c b/test/cxx_standard/c11.c
@@ -0,0 +1,3 @@
+#if __STDC_VERSION__ < 201112L
+#error "Not C11"
+#endif
diff --git a/test/cxx_standard/c17.c b/test/cxx_standard/c17.c
@@ -0,0 +1,3 @@
+#if __STDC_VERSION__ < 201710L
+#error "Not C17"
+#endif
diff --git a/test/cxx_standard/cxx14.cpp b/test/cxx_standard/cxx14.cpp
@@ -0,0 +1,3 @@
+#if __cplusplus != 201402L
+#error "Not C++14"
+#endif
diff --git a/test/cxx_standard/main.cpp b/test/cxx_standard/main.cpp
@@ -0,0 +1,5 @@
+#if __cplusplus < 201703L
+#error "Not C++17"
+#endif
+
+int main() { return 0; }
diff --git a/toolchain/android-toolchain-clang.xml b/toolchain/android-toolchain-clang.xml
@@ -35,8 +35,6 @@
   <set name="EXEPREFIX" value="llvm" />
 </section>
 
-<set name="HXCPP_CPP11" value="1" unless="HXCPP_NO_CPP11 || HXCPP_CPP17" />
-
 <include name="toolchain/gcc-toolchain.xml"/>
 
 <compiler id="android-gcc" exe="clang++">
@@ -63,8 +61,6 @@
   <flag value="-DHXCPP_ANDROID_PLATFORM=${HXCPP_ANDROID_PLATFORM}" />
 
   <!-- Options -->
-  <cppflag value="-std=c++11" if="HXCPP_CPP11" />
-  <cppflag value="-std=c++17" if="HXCPP_CPP17" />
   <flag value="-flto" if="HXCPP_OPTIMIZE_LINK" unless="debug"/>
   <flag value="-fvisibility=hidden"/>
   <flag value="-ffunction-sections"/>

diff --git a/toolchain/android-toolchain-gcc.xml b/toolchain/android-toolchain-gcc.xml
@@ -12,9 +12,6 @@
               - you can also set the variable "android-19" directly
 -->
 
-<set name="HXCPP_CPP11" value="1" if="NDKV9+ || NDKV10+" unless="HXCPP_NO_CPP11" />
-
-
 <!-- Set architecture -->
 <section if="HXCPP_X86">
   <set name="ARCH" value="-x86" />
@@ -96,8 +93,6 @@
   <cppflag value="-frtti"/>
   <flag value="-D_LINUX_STDDEF_H "/> <!-- Avoid compiler including 2 version of file -->
   <flag value="-Wno-psabi" />
-  <cppflag value="-std=c++11" if="HXCPP_CPP11"/>
-  <flag value="-DHXCPP_CPP11" if="HXCPP_CPP11"/>
 
   <section unless="HXCPP_X86 || HXCPP_X86_64">
 
@@ -168,7 +163,6 @@
 
   <flag value="-frtti"/>
   <flag value="-nostdlib"/>
-  <flag value="-std=c++11" if="HXCPP_CPP11"/>
   <flag value="-Wl,-shared,-Bsymbolic"/>
   <section if="HXCPP_OPTIMIZE_FOR_SIZE || HXCPP_GC_SECTIONS" unless="debug">
     <flag value="-Wl,--gc-sections" />
@@ -218,7 +212,6 @@
 
   <flag value="-frtti"/>
   <flag value="-nostdlib"/>
-  <flag value="-std=c++11" if="HXCPP_CPP11"/>
   <flag value="-Wl,--no-undefined" unless="dll_import" />
   <flag value="-Wl,--unresolved-symbols=ignore-in-object-files" if="dll_import" />
   <section unless="HXCPP_ANDROID_NO_16K_PAGES">

diff --git a/toolchain/appletvos-toolchain.xml b/toolchain/appletvos-toolchain.xml
@@ -10,8 +10,6 @@
 <include name="toolchain/gcc-toolchain.xml"/>
 <!--<path name="${DEVELOPER_DIR}/Platforms/iPhoneOS.platform/Developer/usr/bin" />-->
 
-<set name="FORCE_LIBGCC" value="1" if="HXCPP_IOS_STDCPP" unless="HXCPP_GCC" />
-<set name="OBJGCC" value="-c11" if="HXCPP_CPP11" />
 <set name="OBJGCC" value="-gcc" if="HXCPP_GCC" />
 <set name="OBJDBG" value="-dbg" if="debug" />
 
@@ -24,10 +22,6 @@
   <!-- <cppflag value="-fvisibility-inlines-hidden"/> -->
   <pchflag value="-x" />
   <pchflag value="c++-header" />
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11" />
   <flag value="-g" if="HXCPP_DEBUG_LINK"/>
   <flag value="-O2" unless="debug"/>
   <flag value="-arch"/>
@@ -71,10 +65,6 @@
 <linker id="dll" exe="g++" >
   <exe name="xcrun --sdk appletvos${TVOS_VER} g++" if="HXCPP_GCC" />
   <exe name="xcrun --sdk appletvos${TVOS_VER} clang++" />
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11" />
   <flag value="-dynamiclib"/>
   <flag value="-arch"/>
   <flag value="arm64" if="HXCPP_ARM64" />

diff --git a/toolchain/appletvsim-toolchain.xml b/toolchain/appletvsim-toolchain.xml
@@ -9,8 +9,6 @@
 <include name="toolchain/gcc-toolchain.xml"/>
 <!--<path name="${DEVELOPER_DIR}/Platforms/iPhoneSimulator.platform/Developer/usr/bin" />-->
 
-<set name="FORCE_LIBGCC" value="1" if="HXCPP_IOS_STDCPP" unless="HXCPP_GCC" />
-<set name="OBJGCC" value="-c11" if="HXCPP_CPP11" />
 <set name="OBJGCC" value="-gcc" if="HXCPP_GCC" />
 <set name="OBJDBG" value="-dbg" if="debug" />
 
@@ -22,10 +20,6 @@
   <!-- <cppflag value="-fvisibility-inlines-hidden"/> -->
   <pchflag value="-x" />
   <pchflag value="c++-header" />
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11" />
   <flag value="-g" if="HXCPP_DEBUG_LINK"/>
   <flag value="-O2" unless="debug"/>
   <flag value="-fmessage-length=0"/>
@@ -78,10 +72,6 @@
 <linker id="dll" exe="g++" >
   <exe name="xcrun --sdk appletvsimulator${TVOS_VER} g++" if="HXCPP_GCC" />
   <exe name="xcrun --sdk appletvsimulator${TVOS_VER} clang++" />
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11" />
   <flag value="-dynamiclib"/>
   <flag value="-arch"/>
   <flag value="i386" unless="HXCPP_M64"/>

diff --git a/toolchain/finish-setup.xml b/toolchain/finish-setup.xml
@@ -76,11 +76,6 @@
 <set name="haxelink" value="dll" if="dll_import"/>
 <set name="haxelink" value="dll" if="dll_link"/>
 
-<set name="HXCPP_IOS_STDCPP" value="1" unless="HXCPP_CPP11 || HXCPP_CPP17" if="iphoneos"/>
-<set name="HXCPP_IOS_STDCPP" value="1" unless="HXCPP_CPP11 || HXCPP_CPP17" if="iphonesim"/>
-<set name="HXCPP_IOS_STDCPP" value="1" unless="HXCPP_CPP11" if="appletvos"/>
-<set name="HXCPP_IOS_STDCPP" value="1" unless="HXCPP_CPP11" if="appletvsim"/>
-
 <set name="DESTDIR" value="bin" />
 <set name="DESTDIR" value="lib" if="static_link" unless="HXCPP_IOS_STDCPP"/>
 <set name="NDLLDIR" value="ndll" />

diff --git a/toolchain/iphoneos-toolchain.xml b/toolchain/iphoneos-toolchain.xml
@@ -3,7 +3,6 @@
 
 <echo value="Using iOS SDK ${IPHONE_VER}" if="VERBOSE"/>
 
-<set name="HXCPP_CPP11" value="1" unless="HXCPP_NO_CPP11 || HXCPP_CPP17" />
 
 <set name="ARCH" value ="-v7" if="HXCPP_ARMV7" />
 <set name="ARCH" value ="-v7s" if="HXCPP_ARMV7S" />
@@ -14,9 +13,6 @@
 <include name="toolchain/gcc-toolchain.xml"/>
 <!--<path name="${DEVELOPER_DIR}/Platforms/iPhoneOS.platform/Developer/usr/bin" />-->
 
-<set name="FORCE_LIBGCC" value="1" if="HXCPP_IOS_STDCPP" unless="HXCPP_GCC" />
-<set name="OBJGCC" value="-c11" if="HXCPP_CPP11" />
-<set name="OBJGCC" value="-c17" if="HXCPP_CPP17" />
 <set name="OBJGCC" value="-gcc" if="HXCPP_GCC" />
 <set name="OBJDBG" value="-dbg" if="debug" />
 
@@ -32,15 +28,6 @@
   <pchflag value="-x" />
   <pchflag value="c++-header" />
 
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
-  <cppflag value="-std=c++11" if="HXCPP_CPP11" />
-  <cppflag value="-std=c++17" if="HXCPP_CPP17" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
-  <mmflag value="-std=c++11" if="HXCPP_CPP11" />
-  <mmflag value="-std=c++17" if="HXCPP_CPP17" />
-
   <flag value="-g" if="HXCPP_DEBUG_LINK"/>
   <flag value="-O2" unless="debug"/>
   <flag value="-arch"/>
@@ -95,10 +82,6 @@
   <exe name="xcrun --sdk iphoneos${IPHONE_VER} g++" if="HXCPP_GCC" />
   <exe name="xcrun --sdk iphoneos${IPHONE_VER} clang++" />
   <flag value="-Wl,-cache_path_lto,/tmp" if="HXCPP_OPTIMIZE_LINK_INCREMENTAL" unless="debug"/>
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
   <flag value="-dynamiclib"/>
   <flag value="-arch"/>
   <flag value="armv6" if="HXCPP_ARMV6" />

diff --git a/toolchain/iphonesim-toolchain.xml b/toolchain/iphonesim-toolchain.xml
@@ -2,18 +2,13 @@
 
 <echo value="Using iOS SDK ${IPHONE_VER}" if="VERBOSE"/>
 
-<set name="HXCPP_CPP11" value="1" unless="HXCPP_NO_CPP11 || HXCPP_CPP17" />
-
 <set name="ARCH" value ="-64" if="HXCPP_M64" />
 
 <set name="HXCPP_USE_LIBTOOL" value="1" />
 <set name="HXCPP_LIBTOOL" value="xcrun --sdk iphonesimulator${IPHONE_VER} libtool" />
 <include name="toolchain/gcc-toolchain.xml"/>
 <!--<path name="${DEVELOPER_DIR}/Platforms/iPhoneSimulator.platform/Developer/usr/bin" />-->
 
-<set name="FORCE_LIBGCC" value="1" if="HXCPP_IOS_STDCPP" unless="HXCPP_GCC" />
-<set name="OBJGCC" value="-c11" if="HXCPP_CPP11" />
-<set name="OBJGCC" value="-c17" if="HXCPP_CPP17" />
 <set name="OBJGCC" value="-gcc" if="HXCPP_GCC" />
 <set name="OBJDBG" value="-dbg" if="debug" />
 
@@ -26,15 +21,6 @@
   <pchflag value="-x" />
   <pchflag value="c++-header" />
 
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
-  <cppflag value="-std=c++11" if="HXCPP_CPP11" />
-  <cppflag value="-std=c++17" if="HXCPP_CPP17" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
-  <mmflag value="-std=c++11" if="HXCPP_CPP11" />
-  <mmflag value="-std=c++17" if="HXCPP_CPP17" />
-
   <flag value="-g" if="HXCPP_DEBUG_LINK"/>
   <flag value="-O2" unless="debug"/>
   <flag value="-fmessage-length=0"/>
@@ -89,10 +75,6 @@
 <linker id="dll" exe="g++" >
   <exe name="xcrun --sdk iphonesimulator${IPHONE_VER} g++" if="HXCPP_GCC" />
   <exe name="xcrun --sdk iphonesimulator${IPHONE_VER} clang++" />
-  <cppflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <cppflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
-  <mmflag value="-stdlib=libstdc++" if="FORCE_LIBGCC" />
-  <mmflag value="-stdlib=libc++" if="HXCPP_CPP11 || HXCPP_CPP17" />
   <flag value="-dynamiclib"/>
   <flag value="-arch"/>
   <flag value="i386" unless="HXCPP_M64"/>

diff --git a/toolchain/linux-toolchain.xml b/toolchain/linux-toolchain.xml
@@ -26,8 +26,6 @@
    </section>
 </section>
 
-<set name="HXCPP_CPP11" value="1" unless="HXCPP_NO_CPP11 || HXCPP_CPP17" />
-
 <include name="toolchain/gcc-toolchain.xml"/>
 <set name="noM32" value="1" if="HXCPP_NO_M32" />
 <set name="noM32" value="1" if="HXCPP_M64" />
@@ -40,8 +38,6 @@
   <flag value="-c"/>
   <flag value="-fvisibility=hidden"/>
   <cppflag value="-frtti"/>
-  <cppflag value="-std=c++11" if="HXCPP_CPP11" />
-  <cppflag value="-std=c++17" if="HXCPP_CPP17"/>
   <flag value="-g" if="debug"/>
   <flag value="-O2" unless="debug"/>
   <flag value="-fpic"/>