Ensure that configure-script testing for compiler attributes actually works.
The configure script tests for compiler attributes didn't actually enable enough warnings or provide a proper test harness to determine whether the compiler supports the attribute in question or not; this caused gcc 4.1 to report that it supports 'weakref', but it doesn't actually support it in the way that is needed for our optional API mechanism. The new configure script test will properly distinguish between full support and partial support for this attribute, among others. git-svn-id: http://svn.digium.com/svn/asterisk/trunk@200764 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
kpfleming
parent
a634dc24df
commit
270a57581a
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@ -5,12 +5,12 @@ AC_DEFUN([AST_GCC_ATTRIBUTE],
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[
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AC_MSG_CHECKING(for compiler 'attribute $1' support)
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x$2" = "x"
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then
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AC_COMPILE_IFELSE(
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AC_LANG_PROGRAM([void __attribute__(($1)) *test(void *muffin, ...) {}],
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AC_LANG_PROGRAM([static void __attribute__(($1)) *test(void *muffin, ...) {return (void *) 0;}],
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[]),
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AC_MSG_RESULT(yes)
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AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
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@ -18,7 +18,7 @@ AC_COMPILE_IFELSE(
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)
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else
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AC_COMPILE_IFELSE(
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AC_LANG_PROGRAM([void __attribute__(($2)) *test(void *muffin, ...) {}],
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AC_LANG_PROGRAM([static void __attribute__(($2)) *test(void *muffin, ...) {return (void *) 0;}],
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[]),
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AC_MSG_RESULT(yes)
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AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
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@ -1,5 +1,5 @@
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#! /bin/sh
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# From configure.ac Revision: 197738 .
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# From configure.ac Revision: 200519 .
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# Guess values for system-dependent variables and create Makefiles.
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# Generated by GNU Autoconf 2.63 for asterisk 1.6.
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#
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@ -18015,7 +18015,7 @@ rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute pure' support" >&5
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$as_echo_n "checking for compiler 'attribute pure' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18025,7 +18025,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((pure)) *test(void *muffin, ...) {}
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static void __attribute__((pure)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18076,7 +18076,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18129,7 +18129,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute malloc' support" >&5
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$as_echo_n "checking for compiler 'attribute malloc' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18139,7 +18139,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((malloc)) *test(void *muffin, ...) {}
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static void __attribute__((malloc)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18190,7 +18190,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18243,7 +18243,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute const' support" >&5
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$as_echo_n "checking for compiler 'attribute const' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18253,7 +18253,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((const)) *test(void *muffin, ...) {}
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static void __attribute__((const)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18304,7 +18304,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18357,7 +18357,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute unused' support" >&5
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$as_echo_n "checking for compiler 'attribute unused' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18367,7 +18367,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((unused)) *test(void *muffin, ...) {}
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static void __attribute__((unused)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18418,7 +18418,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18471,7 +18471,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute always_inline' support" >&5
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$as_echo_n "checking for compiler 'attribute always_inline' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18481,7 +18481,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((always_inline)) *test(void *muffin, ...) {}
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static void __attribute__((always_inline)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18532,7 +18532,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18585,7 +18585,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute deprecated' support" >&5
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$as_echo_n "checking for compiler 'attribute deprecated' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18595,7 +18595,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((deprecated)) *test(void *muffin, ...) {}
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static void __attribute__((deprecated)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18646,7 +18646,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18699,7 +18699,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute sentinel' support" >&5
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$as_echo_n "checking for compiler 'attribute sentinel' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18709,7 +18709,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((sentinel)) *test(void *muffin, ...) {}
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static void __attribute__((sentinel)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18760,7 +18760,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18813,7 +18813,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute warn_unused_result' support" >&5
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$as_echo_n "checking for compiler 'attribute warn_unused_result' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -18823,7 +18823,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((warn_unused_result)) *test(void *muffin, ...) {}
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static void __attribute__((warn_unused_result)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18874,7 +18874,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18927,7 +18927,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute weakref' support" >&5
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$as_echo_n "checking for compiler 'attribute weakref' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "xweakref("foo")" = "x"
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then
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@ -18937,7 +18937,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((weakref)) *test(void *muffin, ...) {}
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static void __attribute__((weakref)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -18988,7 +18988,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((weakref("foo"))) *test(void *muffin, ...) {}
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static void __attribute__((weakref("foo"))) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -19041,7 +19041,7 @@ CFLAGS="$saved_CFLAGS"
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{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute weak_import' support" >&5
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$as_echo_n "checking for compiler 'attribute weak_import' support... " >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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CFLAGS="$CFLAGS -Wall -Wno-unused -Werror"
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if test "x" = "x"
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then
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@ -19051,7 +19051,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__((weak_import)) *test(void *muffin, ...) {}
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static void __attribute__((weak_import)) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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@ -19102,7 +19102,7 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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void __attribute__(()) *test(void *muffin, ...) {}
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static void __attribute__(()) *test(void *muffin, ...) {return (void *) 0;}
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int
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main ()
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{
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