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|
AC_DEFUN([KDE_C_LONG_DOUBLE],
[
AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
[
ac_save_LIBS="$LIBS"
LIBS="-lm $LIBS"
AC_TRY_RUN(
[
#define _ISOC99_SOURCE 1
#define _GNU_SOURCE 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
int main() {
/* The Stardent Vistra knows sizeof(long double), but does not support it. */
long double foo = 1.0;
char buffer[10];
/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
int result = (sizeof(long double) <= sizeof(double));
/* the following is needed for a broken printf in glibc2 */
if (!result) {
foo = foo * 3;
sprintf(buffer,"%0.0Lf",foo);
result = strcmp(buffer, "3");
/* and now something mean ;-) */
foo = powl(fabsl(foo), 1);
}
exit(result); }
],
ac_cv_c_long_double=yes, ac_cv_c_long_double=no,
ac_cv_c_long_double=no
)
LIBS="$ac_save_LIBS"
])
if test $ac_cv_c_long_double = yes; then
AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have support for long double in printf])
fi
])
KDE_C_LONG_DOUBLE
have_l_funcs=yes
AC_CHECK_LIB(m, sqrtl,,have_l_funcs=no)
if test "xyes" = "x$have_l_funcs" ; then
AC_DEFINE(HAVE_L_FUNCS,1,[Define if you have *l math functions (absl, ...)])
fi
LIBGMP=
KDE_CHECK_HEADER([gmp.h], [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
kde_save_LIBS=$LIBS
LIBS="$all_libraries -lgmp"
AC_TRY_LINK(dnl
[
#include <gmp.h>
],
[
mpz_t _mpz;
mpz_init_set_si(_mpz, 0);
],
[LIBGMP="-lgmp"],
[
DO_NOT_COMPILE="$DO_NOT_COMPILE kcalc"
])
LIBS=$kde_save_LIBS
AC_LANG_RESTORE
])
AC_SUBST(LIBGMP)
|
