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| author | Darren Tucker <dtucker@dtucker.net> | 2018-03-05 19:28:08 +1100 |
|---|---|---|
| committer | Darren Tucker <dtucker@dtucker.net> | 2018-03-05 19:28:08 +1100 |
| commit | 58fd4c5c0140f6636227ca7acbb149ab0c2509b9 (patch) | |
| tree | 51a79fa23c4140148ba59f9c43107fedefe9bbae /configure.ac | |
| parent | 71e48bc7945f867029e50e06c665c66aed6d3c64 (diff) | |
Check for and work around buggy fflush(NULL).
Some really old platforms (eg SunOS4) segfault on fflush(NULL) so check
for and work around. With klausz at haus-gisela.de.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 70e72be7..d2fb4469 100644 --- a/configure.ac +++ b/configure.ac @@ -2059,6 +2059,16 @@ AC_CHECK_FUNCS([realpath], [ ) ]) +AC_MSG_CHECKING([for working fflush(NULL)]) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[#include <stdio.h>]], [[fflush(NULL); exit(0);]])], + AC_MSG_RESULT([yes]), + [AC_MSG_RESULT([no]) + AC_DEFINE([FFLUSH_NULL_BUG], [1], + [define if fflush(NULL) does not work])], + AC_MSG_WARN([cross compiling: assuming working]) +) + dnl Checks for time functions AC_CHECK_FUNCS([gettimeofday time]) dnl Checks for utmp functions |