diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 87b0b1a0aa..55976da76d 100644 --- a/configure.in +++ b/configure.in @@ -700,6 +700,27 @@ powerpc-darwin*) ;; esac AC_FUNC_MEMCMP + +# http://sources.redhat.com/ml/libc-hacker/2005-08/msg00008.html +# Debian GNU/Linux Etch's libc6.1 2.3.6.ds1-13etch5 has this problem. +# Debian GNU/Linux Lenny's libc6.1 2.7-10 has no problem. +AC_CACHE_CHECK(for broken erfc of glibc comes with Debian GNU/Linux Etch on IA64, rb_broken_glibc_ia64_erfc, + [AC_TRY_RUN([ +#include <math.h> +int +main() +{ + erfc(10000.0); + return 0; +} +], + rb_broken_glibc_ia64_erfc=no, + rb_broken_glibc_ia64_erfc=yes, + rb_broken_glibc_ia64_erfc=no)]) +case $rb_broken_glibc_ia64_erfc in + yes) ac_cv_func_erf=no;; +esac + AC_REPLACE_FUNCS(dup2 memmove strerror strftime\ strchr strstr crypt flock vsnprintf\ isnan finite isinf hypot acosh erf tgamma lgamma_r cbrt \ |