| Brian Silverman | 8649792 | 2018-02-10 19:28:39 -0500 | [diff] [blame] | 1 | AC_DEFUN([utrace_CC_m32], [dnl |
| 2 | AC_CACHE_CHECK([$CC option for 32-bit word size], utrace_cv_CC_m32, [dnl |
| 3 | save_CC="$CC" |
| 4 | utrace_cv_CC_m32=none |
| 5 | for ut_try in -m32 -m31; do |
| 6 | [CC=`echo "$save_CC" | sed 's/ -m[36][241]//'`" $ut_try"] |
| 7 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int foo (void) { return 1; }]])], |
| 8 | [utrace_cv_CC_m32=$ut_try]) |
| 9 | test x$utrace_cv_CC_m32 = xnone || break |
| 10 | done |
| 11 | CC="$save_CC"])]) |
| 12 | |
| 13 | AC_DEFUN([utrace_HOST64], [AC_REQUIRE([utrace_CC_m32]) |
| 14 | AS_IF([test x$utrace_cv_CC_m32 != xnone], [dnl |
| 15 | AC_CACHE_CHECK([for 64-bit host], utrace_cv_host64, [dnl |
| 16 | AC_EGREP_CPP([@utrace_host64@], [#include <stdint.h> |
| 17 | #if (UINTPTR_MAX > 0xffffffffUL) |
| 18 | @utrace_host64@ |
| 19 | #endif], |
| 20 | utrace_cv_host64=yes, utrace_cv_host64=no)]) |
| 21 | AS_IF([test $utrace_cv_host64 = no], |
| 22 | [utrace_biarch=-m64 utrace_thisarch=$utrace_cv_CC_m32], |
| 23 | [utrace_biarch=$utrace_cv_CC_m32 utrace_thisarch=-m64]) |
| 24 | |
| 25 | biarch_CC=`echo "$CC" | sed "s/ *${utrace_thisarch}//"` |
| 26 | biarch_CC="$biarch_CC $utrace_biarch"])]) |
| 27 | |
| 28 | AC_DEFUN([utrace_BIARCH], [AC_REQUIRE([utrace_HOST64]) |
| 29 | utrace_biarch_forced=no |
| 30 | AC_ARG_WITH([biarch], |
| 31 | AC_HELP_STRING([--with-biarch], |
| 32 | [enable biarch tests despite build problems]), |
| 33 | [AS_IF([test "x$with_biarch" != xno], [utrace_biarch_forced=yes])]) |
| 34 | AS_IF([test $utrace_biarch_forced = yes], [dnl |
| 35 | utrace_cv_cc_biarch=yes |
| 36 | AC_MSG_NOTICE([enabling biarch tests regardless using $biarch_CC])], [dnl |
| 37 | AS_IF([test x$utrace_cv_CC_m32 != xnone], [dnl |
| 38 | AC_CACHE_CHECK([whether $biarch_CC makes executables we can run], |
| 39 | utrace_cv_cc_biarch, [dnl |
| 40 | save_CC="$CC" |
| 41 | CC="$biarch_CC" |
| 42 | AC_RUN_IFELSE([AC_LANG_PROGRAM([], [])], |
| 43 | utrace_cv_cc_biarch=yes, utrace_cv_cc_biarch=no, utrace_cv_cc_biarch=no) |
| 44 | CC="$save_CC"])], [utrace_cv_cc_biarch=no]) |
| 45 | AS_IF([test $utrace_cv_cc_biarch != yes], [dnl |
| 46 | AC_MSG_WARN([not running biarch tests, $biarch_CC does not work])])]) |
| 47 | AM_CONDITIONAL(BIARCH, [test $utrace_cv_cc_biarch = yes])]) |