[asterisk-commits] kpfleming: trunk r200985 - in /trunk: ./ autoconf/

[SVN commits to the Asterisk project]

Author: kpfleming
Date: Tue Jun 16 11:32:36 2009
New Revision: 200985

URL: http://svn.asterisk.org/svn-view/asterisk?view=rev&rev=200985
Log:
Fix problems with new compiler attribute checking in configure script.

The last changes to ast_gcc_attribute.m4 caused some problems checking for
various attributes, because the scope of the symbol the attribute is applied
to can be important; this patch allows the scope to be specified for the check.


Modified:
    trunk/autoconf/ast_gcc_attribute.m4
    trunk/configure
    trunk/configure.ac

Modified: trunk/autoconf/ast_gcc_attribute.m4
URL: http://svn.asterisk.org/svn-view/asterisk/trunk/autoconf/ast_gcc_attribute.m4?view=diff&rev=200985&r1=200984&r2=200985
==============================================================================
--- trunk/autoconf/ast_gcc_attribute.m4 (original)
+++ trunk/autoconf/ast_gcc_attribute.m4 Tue Jun 16 11:32:36 2009
@@ -1,5 +1,5 @@
 # Helper function to check for gcc attributes.
-# AST_GCC_ATTRIBUTE([attribute name], [attribute syntax])
+# AST_GCC_ATTRIBUTE([attribute name], [attribute syntax], [attribute scope])
 
 AC_DEFUN([AST_GCC_ATTRIBUTE],
 [
@@ -7,10 +7,17 @@
 saved_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
 
+if test "x$3" = "x"
+then
+attribute_scope="static"
+else
+attribute_scope="$3"
+fi
+
 if test "x$2" = "x"
 then
 AC_COMPILE_IFELSE(
-	AC_LANG_PROGRAM([static void __attribute__(($1)) *test(void *muffin, ...) {return (void *) 0;}],
+	AC_LANG_PROGRAM([$attribute_scope void __attribute__(($1)) *test(void *muffin, ...) {return (void *) 0;}],
 			[]),
 	AC_MSG_RESULT(yes)
 	AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
@@ -18,7 +25,7 @@
 )
 else
 AC_COMPILE_IFELSE(
-	AC_LANG_PROGRAM([static void __attribute__(($2)) *test(void *muffin, ...) {return (void *) 0;}],
+	AC_LANG_PROGRAM([$attribute_scope void __attribute__(($2)) *test(void *muffin, ...) {return (void *) 0;}],
 			[]),
 	AC_MSG_RESULT(yes)
 	AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),

Modified: trunk/configure.ac
URL: http://svn.asterisk.org/svn-view/asterisk/trunk/configure.ac?view=diff&rev=200985&r1=200984&r2=200985
==============================================================================
--- trunk/configure.ac (original)
+++ trunk/configure.ac Tue Jun 16 11:32:36 2009
@@ -515,7 +515,7 @@
 AST_GCC_ATTRIBUTE(sentinel)
 AST_GCC_ATTRIBUTE(warn_unused_result)
 AST_GCC_ATTRIBUTE(weakref, [weakref("foo")])
-AST_GCC_ATTRIBUTE(weak_import)
+AST_GCC_ATTRIBUTE(weak_import, , "")
 
 AC_MSG_CHECKING(for -ffunction-sections support)
 saved_CFLAGS="${CFLAGS}"