X-Git-Url: http://git.asterisk.org/gitweb/?p=asterisk%2Fasterisk.git;a=blobdiff_plain;f=acinclude.m4;h=71ae301849427529d2f6ab76ddf886451ae48047;hp=521b1801435d0f6de6b280f8b23864d763e17b18;hb=5418a7a1a8326544f2275819c93649c97261a5f3;hpb=6ec6d652bde6ee2c00ad8e38a684ec6f690ec7e2;ds=inline

diff --git a/acinclude.m4 b/acinclude.m4
index 521b180..71ae301 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1,3 +1,16 @@
+# AST_GCC_ATTRIBUTE([attribute name])
+
+AC_DEFUN([AST_GCC_ATTRIBUTE],
+[
+AC_MSG_CHECKING(for compiler 'attribute $1' support)
+AC_COMPILE_IFELSE(
+	AC_LANG_PROGRAM([static int __attribute__(($1)) test(void) {}],
+			[]),
+	AC_MSG_RESULT(yes)
+	AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
+	AC_MSG_RESULT(no))
+])
+
 # AST_EXT_LIB_SETUP([package symbol name], [package friendly name], [package option name], [additional help text])
 
 AC_DEFUN([AST_EXT_LIB_SETUP],
@@ -90,8 +103,8 @@ AC_DEFUN(
       if test -z "$a" ; then continue ; fi ;
       if ( sh -c "$a --version" 2> /dev/null | grep GNU  2>&1 > /dev/null ) ;  then
          GNU_MAKE=$a ;
-	 GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
-	 GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.'`
+         GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
+         GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
          break;
       fi
    done ;
@@ -102,3 +115,63 @@ if test  "x$GNU_MAKE" = "xNot Found"  ; then
 fi
 AC_SUBST([GNU_MAKE])
 ])
+
+# AST_FUNC_FORK
+# -------------
+AN_FUNCTION([fork],  [AST_FUNC_FORK])
+AN_FUNCTION([vfork], [AST_FUNC_FORK])
+AC_DEFUN([AST_FUNC_FORK],
+[AC_REQUIRE([AC_TYPE_PID_T])dnl
+AC_CHECK_HEADERS(vfork.h)
+AC_CHECK_FUNCS(fork vfork)
+if test "x$ac_cv_func_fork" = xyes; then
+  _AST_FUNC_FORK
+else
+  ac_cv_func_fork_works=$ac_cv_func_fork
+fi
+if test "x$ac_cv_func_fork_works" = xcross; then
+  case $host in
+    *-*-amigaos* | *-*-msdosdjgpp* | *-*-uclinux* )
+      # Override, as these systems have only a dummy fork() stub
+      ac_cv_func_fork_works=no
+      ;;
+    *)
+      ac_cv_func_fork_works=yes
+      ;;
+  esac
+  AC_MSG_WARN([result $ac_cv_func_fork_works guessed because of cross compilation])
+fi
+ac_cv_func_vfork_works=$ac_cv_func_vfork
+if test "x$ac_cv_func_vfork" = xyes; then
+  _AC_FUNC_VFORK
+fi;
+if test "x$ac_cv_func_fork_works" = xcross; then
+  ac_cv_func_vfork_works=$ac_cv_func_vfork
+  AC_MSG_WARN([result $ac_cv_func_vfork_works guessed because of cross compilation])
+fi
+
+if test "x$ac_cv_func_vfork_works" = xyes; then
+  AC_DEFINE(HAVE_WORKING_VFORK, 1, [Define to 1 if `vfork' works.])
+else
+  AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
+fi
+if test "x$ac_cv_func_fork_works" = xyes; then
+  AC_DEFINE(HAVE_WORKING_FORK, 1, [Define to 1 if `fork' works.])
+fi
+])# AST_FUNC_FORK
+
+
+# _AST_FUNC_FORK
+# -------------
+AC_DEFUN([_AST_FUNC_FORK],
+  [AC_CACHE_CHECK(for working fork, ac_cv_func_fork_works,
+    [AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
+	[
+	  /* By Ruediger Kuhlmann. */
+	  return fork () < 0;
+	])],
+      [ac_cv_func_fork_works=yes],
+      [ac_cv_func_fork_works=no],
+      [ac_cv_func_fork_works=cross])])]
+)# _AST_FUNC_FORK