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