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patch 7.4.1463

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Problem:    Configure doesn't find isinf() and isnan() on some systems.
Solution:   Use a configure check that includes math.h.
This commit is contained in:
Bram Moolenaar
2016-02-29 21:38:26 +01:00
parent 2f6271b1e7
commit a6b8976bb7
3 changed files with 95 additions and 2 deletions
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66
src/auto/configure vendored
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@@ -11858,7 +11858,7 @@ for ac_func in bcmp fchdir fchown fsync getcwd getpseudotty \
setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
sigvec strcasecmp strerror strftime stricmp strncasecmp \
strnicmp strpbrk strtol tgetent towlower towupper iswupper \
usleep utime utimes isnan isinf
usleep utime utimes
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
@@ -12379,6 +12379,70 @@ if ac_fn_c_try_link "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }; $as_echo "#define HAVE_FLOAT_FUNCS 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for isinf()" >&5
$as_echo_n "checking for isinf()... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#ifdef HAVE_MATH_H
# include <math.h>
#endif
#if STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#endif
int
main ()
{
int r = isinf(1.11);
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }; $as_echo "#define HAVE_ISINF 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for isnan()" >&5
$as_echo_n "checking for isnan()... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#ifdef HAVE_MATH_H
# include <math.h>
#endif
#if STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#endif
int
main ()
{
int r = isnan(1.11);
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }; $as_echo "#define HAVE_ISNAN 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }