From 3e4d8f433239c40311037616b1b8833a06651ae0 Mon Sep 17 00:00:00 2001 From: Arne Schwabe Date: Mon, 16 Apr 2012 19:21:14 +0200 Subject: Initial import --- openvpn/m4/ax_varargs.m4 | 77 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 openvpn/m4/ax_varargs.m4 (limited to 'openvpn/m4/ax_varargs.m4') diff --git a/openvpn/m4/ax_varargs.m4 b/openvpn/m4/ax_varargs.m4 new file mode 100644 index 00000000..c295d21f --- /dev/null +++ b/openvpn/m4/ax_varargs.m4 @@ -0,0 +1,77 @@ +dnl @synopsis AX_CPP_VARARG_MACRO_GCC +dnl +dnl Test if the preprocessor understands GNU GCC-style vararg macros. +dnl If it does, defines HAVE_CPP_VARARG_MACRO_GCC to 1. +dnl +dnl @version +dnl @author James Yonan , Matthias Andree +AC_DEFUN([AX_CPP_VARARG_MACRO_GCC], [dnl + AS_VAR_PUSHDEF([VAR], [ax_cv_cpp_vararg_macro_gcc])dnl + AC_CACHE_CHECK( + [for GNU GCC vararg macro support], + [VAR], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[ +#define macro(a, b...) func(a, b) +int func(int a, int b, int c); + ]], + [[ +int i = macro(1, 2, 3); + ]] + )], + [VAR=yes], + [VAR=no] + )] + )dnl + + AS_VAR_IF( + [VAR], + [yes], + [AC_DEFINE( + [HAVE_CPP_VARARG_MACRO_GCC], + [1], + [Define to 1 if your compiler supports GNU GCC-style variadic macros] + )] + )dnl + AS_VAR_POPDEF([VAR])dnl +]) + +dnl @synopsis AX_CPP_VARARG_MACRO_ISO +dnl +dnl Test if the preprocessor understands ISO C 1999 vararg macros. +dnl If it does, defines HAVE_CPP_VARARG_MACRO_ISO to 1. +dnl +dnl @version +dnl @author James Yonan , Matthias Andree +AC_DEFUN([AX_CPP_VARARG_MACRO_ISO], [dnl + AS_VAR_PUSHDEF([VAR],[ax_cv_cpp_vararg_macro_iso])dnl + AC_CACHE_CHECK( + [for ISO C 1999 vararg macro support], + [VAR], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[ +#define macro(a, ...) func(a, __VA_ARGS__) +int func(int a, int b, int c); + ]], + [[ +int i = macro(1, 2, 3); + ]] + )], + [VAR=yes], + [VAR=no] + )] + )dnl + + AS_VAR_IF( + [VAR], + [yes], + [AC_DEFINE( + [HAVE_CPP_VARARG_MACRO_ISO], + [1], + [Define to 1 if your compiler supports ISO C99 variadic macros] + )] + )dnl + AS_VAR_POPDEF([VAR])dnl +]) -- cgit v1.2.3