| dnl |
| dnl Check whether _Unwind_GetIPInfo is available without doing a link |
| dnl test so we can use this with libstdc++-v3 and libjava. Need to |
| dnl use $target to set defaults because automatic checking is not possible |
| dnl without a link test (and maybe even with a link test). |
| dnl |
| |
| AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [ |
| AC_ARG_WITH(system-libunwind, |
| [ --with-system-libunwind use installed libunwind]) |
| # If system-libunwind was not specifically set, pick a default setting. |
| if test x$with_system_libunwind = x; then |
| case ${target} in |
| ia64-*-hpux*) with_system_libunwind=yes ;; |
| *) with_system_libunwind=no ;; |
| esac |
| fi |
| # Based on system-libunwind and target, do we have ipinfo? |
| if test x$with_system_libunwind = xyes; then |
| case ${target} in |
| ia64-*-*) have_unwind_getipinfo=no ;; |
| *) have_unwind_getipinfo=yes ;; |
| esac |
| else |
| # Darwin before version 9 does not have _Unwind_GetIPInfo. |
| changequote(,) |
| case ${target} in |
| *-*-darwin[3-8]|*-*-darwin[3-8].*) have_unwind_getipinfo=no ;; |
| *) have_unwind_getipinfo=yes ;; |
| esac |
| changequote([,]) |
| fi |
| |
| if test x$have_unwind_getipinfo = xyes; then |
| AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.]) |
| fi |
| ]) |
| |
| # ACX_PROG_CC_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CFLAGS]) |
| # Sets @VARIABLE@ to the subset of the given options which the |
| # compiler accepts. |
| AC_DEFUN([ACX_PROG_CC_WARNING_OPTS], |
| [AC_REQUIRE([AC_PROG_CC])dnl |
| AC_LANG_PUSH(C) |
| m4_pushdef([acx_Var], [m4_default([$2], [WARN_CFLAGS])])dnl |
| AC_SUBST(acx_Var)dnl |
| m4_expand_once([acx_Var= |
| ],m4_quote(acx_Var=))dnl |
| save_CFLAGS="$CFLAGS" |
| for real_option in $1; do |
| # Do the check with the no- prefix removed since gcc silently |
| # accepts any -Wno-* option on purpose |
| case $real_option in |
| -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;; |
| *) option=$real_option ;; |
| esac |
| AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option]) |
| AC_CACHE_CHECK([whether $CC supports $option], acx_Woption, |
| [CFLAGS="$option" |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])], |
| [AS_VAR_SET(acx_Woption, yes)], |
| [AS_VAR_SET(acx_Woption, no)]) |
| ]) |
| AS_IF([test AS_VAR_GET(acx_Woption) = yes], |
| [acx_Var="$acx_Var${acx_Var:+ }$real_option"]) |
| AS_VAR_POPDEF([acx_Woption])dnl |
| done |
| CFLAGS="$save_CFLAGS" |
| m4_popdef([acx_Var])dnl |
| AC_LANG_POP(C) |
| ])# ACX_PROG_CC_WARNING_OPTS |
