[libreplace_cv_HAVE_FDATASYNC_IN_LIBRT=yes
AC_DEFINE(HAVE_FDATASYNC, 1, Define to 1 if there is support for fdatasync)])
])
+AC_HAVE_DECL(fdatasync, [#include <unistd.h>])
AC_CHECK_FUNCS(clock_gettime,libreplace_cv_have_clock_gettime=yes,[
AC_CHECK_LIB(rt, clock_gettime,
[libreplace_cv_HAVE_CLOCK_GETTIME_IN_LIBRT=yes
#ifndef HAVE_FDATASYNC
#define fdatasync(fd) fsync(fd)
+#elif !defined(HAVE_DECL_FDATASYNC)
+int fdatasync(int );
#endif
/* these are used to mark symbols as local to a shared lib, or
conf.CHECK_C_PROTOTYPE('dlopen', 'void *dlopen(const char* filename, unsigned int flags)',
define='DLOPEN_TAKES_UNSIGNED_FLAGS', headers='dlfcn.h dl.h')
- conf.CHECK_FUNCS_IN('fdatasync', 'rt', checklibc=True)
+ if conf.CHECK_FUNCS_IN('fdatasync', 'rt', checklibc=True):
+ # some systems are missing the declaration
+ conf.CHECK_DECLS('fdatasync')
+
conf.CHECK_FUNCS_IN('clock_gettime', 'rt', checklibc=True)
# these headers need to be tested as a group on freebsd