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|
AC_DEFUN(AC_MY_LIBS,
[
if ` test "$1" `
then
AC_MSG_CHECKING(gmp library)
if test -r "$1/lib$2.a"
then
LDADD="$LDADD $1/lib$2.a"
else
AC_MSG_ERROR($2 not found)
fi
AC_MSG_RESULT(yes)
else
AC_CHECK_LIB($2, main, , AC_MSG_ERROR($2 not found))
fi
]
)
AC_DEFUN(AC_MY_HEADERS,
[
if test "$1"
then
AC_CHECK_HEADER($1/$2, INCLUDES="$INCLUDES -I$1",AC_MSG_ERROR(echo $2 not found in $1))
else
AC_CHECK_HEADER($2,, AC_MSG_ERROR($2 not found))
fi
])
AC_DEFUN(AC_CHECK_OS,
[
AC_CACHE_CHECK([OS type], mpfr_cv_os_type, [
mpfr_cv_os_type=`uname -s`
])
OS_TYPE=$mpfr_cv_os_type
])
AC_DEFUN(AC_CHECK_MACHTYPE,
[
AC_CACHE_CHECK([Mach type], mpfr_cv_mach_type, [
mpfr_cv_mach_type=`uname -m`
])
MACHTYPE=$mpfr_cv_mach_type
])
dnl ------------------------------------------------------------
AC_DEFUN(MPFR_CONFIGS,
[
case $OS_TYPE in
SunOS*)
LM9X="-lm9x"
;;
esac
AC_REPLACE_FUNCS(strcasecmp)
dnl Check for IEEE-754 switches on Alpha
if test "$MACHTYPE" = "alpha"; then
saved_CFLAGS="$CFLAGS"
AC_CACHE_CHECK([for IEEE-754 switches], mpfr_cv_ieee_switches, [
if test -n "$GCC"; then
mpfr_cv_ieee_switches="-mfp-rounding-mode=d -mieee-with-inexact"
else
mpfr_cv_ieee_switches="-fprm d -ieee_with_inexact"
fi
CFLAGS="$CFLAGS $mpfr_cv_ieee_switches"
AC_TRY_COMPILE(,,, mpfr_cv_ieee_switches="none")
])
if test "$mpfr_cv_ieee_switches" = "none"; then
CFLAGS="$saved_CFLAGS"
else
CFLAGS="$saved_CFLAGS $mpfr_cv_ieee_switches"
fi
fi
AC_CHECK_HEADERS(fpu_control.h)
dnl Check for fesetround
AC_CACHE_CHECK([for fesetround], mpfr_cv_have_fesetround, [
saved_LIBS="$LIBS"
LIBS="$LIBS $LM9X"
AC_TRY_LINK([#include <fenv.h>], [fesetround(FE_TONEAREST);],
mpfr_cv_have_fesetround=yes, mpfr_cv_have_fesetround=no)
LIBS="$saved_LIBS"
])
if test "$mpfr_cv_have_fesetround" = "yes"; then
LIBS="$LIBS $LM9X"
AC_DEFINE(MPFR_HAVE_FESETROUND,1,[Define if you have the `fesetround' function via the <fenv.h> header file.])
fi
dnl Check random functions
AC_CHECK_FUNCS(lrand48)
dnl Check whether 0/0, 1/0, -1/0, sqrt(-1) are valid expressions
AC_CACHE_CHECK([for valid NaN], mpfr_cv_valid_nan, [
AC_TRY_RUN([
#include <math.h>
int main()
{
double x = (0.0/0.0) + sqrt(-1.0);
return x == 1.0/0.0;
}
], mpfr_cv_valid_nan=yes, mpfr_cv_valid_nan=no, mpfr_cv_valid_nan=no)
])
if test "$mpfr_cv_valid_nan" = "yes"; then
AC_DEFINE(HAVE_INFS,1,[Define if 0/0, 1/0, -1/0 and sqrt(-1) work to generate NaN/infinities.])
fi
dnl Check for gcc float-conversion bug; if need be, -ffloat-store is used to
dnl force the conversion to the destination type when a value is stored to
dnl a variable (see ISO C99 standard 5.1.2.3#13, 6.3.1.5#2, 6.3.1.8#2). This
dnl is important concerning the exponent range. Note that this doesn't solve
dnl the double-rounding problem (x86 processors still have to be set to the
dnl IEEE-754 compatible rounding mode).
if test -n "$GCC"; then
AC_CACHE_CHECK([for gcc float-conversion bug], mpfr_cv_gcc_floatconv_bug, [
AC_TRY_RUN([
int main()
{
double x = 0.5;
int i;
for (i = 1; i <= 11; i++)
x *= x;
return x == 0;
}
], [mpfr_cv_gcc_floatconv_bug="yes, use -ffloat-store"],
[mpfr_cv_gcc_floatconv_bug="no"],
[mpfr_cv_gcc_floatconv_bug="cannot test, use -ffloat-store"])
])
if test "$mpfr_cv_gcc_floatconv_bug" != "no"; then
CFLAGS="$CFLAGS -ffloat-store"
fi
fi
dnl Check if denormalized numbers are supported
AC_CACHE_CHECK([for denormalized numbers], mpfr_cv_have_denorms, [
AC_TRY_RUN([
#include <math.h>
#include <stdio.h>
int main()
{
double x = 2.22507385850720138309e-308;
fprintf (stderr, "%e\n", x / 2.0);
return 2.0 * (x / 2.0) != x;
}
], mpfr_cv_have_denorms=yes, mpfr_cv_have_denorms=no, mpfr_cv_have_denorms=no)
])
if test "$mpfr_cv_have_denorms" = "yes"; then
AC_DEFINE(HAVE_DENORMS,1,[Define if denormalized floats work.])
fi
])
|
