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Detect impossibility of setting FD_SETSIZE at configure time. 

git-svn-id: http://voip.null.ro/svn/yate@1948 acf43c95-373e-0410-b603-e72c3f656dc1
This commit is contained in:
paulc 2008-04-24 11:02:28 +00:00
parent 487a5cb114
commit c8866eecb6
1 changed files with 13 additions and 1 deletions
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14
configure.in
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@ -179,7 +179,19 @@ AC_SUBST(INLINE_FLAGS)
FDSIZE_HACK=""
AC_ARG_WITH(fdsize,AC_HELP_STRING([--with-fdsize=NNNN],[set FD_SIZE to NNNN (default 8192)]),[ac_cv_use_fdsize=$withval],[ac_cv_use_fdsize=8192])
if [[ "x$ac_cv_use_fdsize" != "xno" ]]; then
FDSIZE_HACK="-DFDSIZE_HACK=$ac_cv_use_fdsize"
FDSIZE_HACK="-DFDSIZE_HACK=$ac_cv_use_fdsize"
AC_LANG_SAVE
AC_LANG_C
AC_TRY_COMPILE([#include <features.h>
#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
#include <bits/types.h>
#else
#error FD_SETSIZE cannot be set
#endif],[if (__FD_SETSIZE>10) exit();],[],[FDSIZE_HACK=""])
AC_LANG_RESTORE
if [[ "x$FDSIZE_HACK" = "x" ]]; then
AC_ERROR([Cannot set FD_SETSIZE on this platform, use --without-fdsize])
fi
fi
AC_SUBST(FDSIZE_HACK)