Jack Howarth <[email protected]> writes:
> 2012-10-25 Jack Howarth <[email protected]>
>
> target/PR55061
> * configure.ac: Check for _Unwind_GetIPInfo function declaration.
> * configure: Regenerate.
>
> Index: libbacktrace/configure.ac
> ===================================================================
> --- libbacktrace/configure.ac (revision 192824)
> +++ libbacktrace/configure.ac (working copy)
> @@ -129,8 +129,15 @@ AC_SUBST(WARN_FLAGS)
> if test -n "${with_target_subdir}"; then
> GCC_CHECK_UNWIND_GETIPINFO
> else
> - AC_CHECK_FUNC(_Unwind_GetIPInfo, [have_unwind_getipinfo=yes],
> + ac_save_CFLAGS="$CFLAGS"
> + CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
> + AC_TRY_COMPILE([#include "unwind.h"], [
> + struct _Unwind_Context *context;
> + int ip_before_insn = 0;
> + return _Unwind_GetIPInfo (context, &ip_before_insn);
> + ], [have_unwind_getipinfo=yes],
> [have_unwind_getipinfo=no])
> + CFLAGS="$ac_save_CFLAGS"
> if test "$have_unwind_getipinfo" = "yes"; then
> AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
> fi
AC_TRY_COMPILE is considered to be obsolete. Can you rewrite in terms
of the currently approved AC_COMPILE_IFELSE? When doing that, use
AC_LANG_PROGRAM. As the autoconf manual says:
-- Macro: AC_TRY_COMPILE (INCLUDES, FUNCTION-BODY, [ACTION-IF-TRUE],
[ACTION-IF-FALSE])
Same as:
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[INCLUDES]],
[[FUNCTION-BODY]])],
[ACTION-IF-TRUE],
[ACTION-IF-FALSE])
Ian
