[pkg-opensc-commit] [pkcs11-helper] 37/60: gcc vararg macro detection

[Eric Dorland]

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eric pushed a commit to tag pkcs11-helper-1.02
in repository pkcs11-helper.

commit 9eb3dc160d4be3de97bfa5fc2c8842ea94a9860b
Author: alonbl <alonbl at 485eb718-1723-0410-b8a9-88cf21a28c35>
Date:   Thu Dec 14 10:00:46 2006 +0000

    gcc vararg macro detection
---
 acinclude.m4 | 43 +++++++++++++++++++++++++++++++++++++++++++
 configure.ac |  2 ++
 2 files changed, 45 insertions(+)

diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644
index 0000000..fb8b4a7
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,43 @@
+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 <jim at yonan.net>, Matthias Andree <matthias.andree at web.de>
+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, [dnl
+      AC_COMPILE_IFELSE([
+	#define macro(a, b...) func(a, b)
+	int func(int a, int b, int c);
+	int test() { return macro(1, 2, 3); }
+	], [ VAR=yes ], [VAR=no])])
+    if test $VAR = yes ; then
+    AC_DEFINE([HAVE_CPP_VARARG_MACRO_GCC], 1, 
+      [Define to 1 if your compiler supports GNU GCC-style variadic macros])
+    fi
+    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 <jim at yonan.net>, Matthias Andree <matthias.andree at web.de>
+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, [dnl
+      AC_COMPILE_IFELSE([
+#define macro(a, ...) func(a, __VA_ARGS__)
+	int func(int a, int b, int c);
+	int test() { return macro(1, 2, 3); }
+	], [ VAR=yes ], [VAR=no])])
+    if test $VAR = yes ; then
+    AC_DEFINE([HAVE_CPP_VARARG_MACRO_ISO], 1, 
+      [Define to 1 if your compiler supports ISO C99 variadic macros])
+    fi
+    AS_VAR_POPDEF([VAR])dnl
+])
diff --git a/configure.ac b/configure.ac
index ebeb994..f35dde1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -259,6 +259,8 @@ fi
 
 # Checks for header files.
 AC_HEADER_STDC
+AX_CPP_VARARG_MACRO_ISO
+AX_CPP_VARARG_MACRO_GCC
 AC_C_CONST
 AC_C_VOLATILE
 AC_TYPE_OFF_T

-- 
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