| AC_DEFUN([utrace_CC_m32], [dnl |
| AC_CACHE_CHECK([$CC option for 32-bit word size], utrace_cv_CC_m32, [dnl |
| save_CC="$CC" |
| utrace_cv_CC_m32=none |
| for ut_try in -m32 -m31; do |
| [CC=`echo "$save_CC" | sed 's/ -m[36][241]//'`" $ut_try"] |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int foo (void) { return 1; }]])], |
| [utrace_cv_CC_m32=$ut_try]) |
| test x$utrace_cv_CC_m32 = xnone || break |
| done |
| CC="$save_CC"])]) |
| |
| AC_DEFUN([utrace_HOST64], [AC_REQUIRE([utrace_CC_m32]) |
| AS_IF([test x$utrace_cv_CC_m32 != xnone], [dnl |
| AC_CACHE_CHECK([for 64-bit host], utrace_cv_host64, [dnl |
| AC_EGREP_CPP([@utrace_host64@], [#include <stdint.h> |
| #if (UINTPTR_MAX > 0xffffffffUL) |
| @utrace_host64@ |
| #endif], |
| utrace_cv_host64=yes, utrace_cv_host64=no)]) |
| AS_IF([test $utrace_cv_host64 = no], |
| [utrace_biarch=-m64 utrace_thisarch=$utrace_cv_CC_m32], |
| [utrace_biarch=$utrace_cv_CC_m32 utrace_thisarch=-m64]) |
| |
| biarch_CC=`echo "$CC" | sed "s/ *${utrace_thisarch}//"` |
| biarch_CC="$biarch_CC $utrace_biarch"])]) |
| |
| AC_DEFUN([utrace_BIARCH], [AC_REQUIRE([utrace_HOST64]) |
| utrace_biarch_forced=no |
| AC_ARG_WITH([biarch], |
| AC_HELP_STRING([--with-biarch], |
| [enable biarch tests despite build problems]), |
| [AS_IF([test "x$with_biarch" != xno], [utrace_biarch_forced=yes])]) |
| AS_IF([test $utrace_biarch_forced = yes], [dnl |
| utrace_cv_cc_biarch=yes |
| AC_MSG_NOTICE([enabling biarch tests regardless using $biarch_CC])], [dnl |
| AS_IF([test x$utrace_cv_CC_m32 != xnone], [dnl |
| AC_CACHE_CHECK([whether $biarch_CC makes executables we can run], |
| utrace_cv_cc_biarch, [dnl |
| save_CC="$CC" |
| CC="$biarch_CC" |
| AC_RUN_IFELSE([AC_LANG_PROGRAM([], [])], |
| utrace_cv_cc_biarch=yes, utrace_cv_cc_biarch=no, utrace_cv_cc_biarch=no) |
| CC="$save_CC"])], [utrace_cv_cc_biarch=no]) |
| AS_IF([test $utrace_cv_cc_biarch != yes], [dnl |
| AC_MSG_WARN([not running biarch tests, $biarch_CC does not work])])]) |
| AM_CONDITIONAL(BIARCH, [test $utrace_cv_cc_biarch = yes])]) |