getsockopt and setsockopt system calls.])
fi
+
+dnl Check for `struct timespec', for the sake of `gen-scmconfig'. When
+dnl building Guile, we always have it, thanks to Gnulib; but scmconfig.h
+dnl must tell whether the system has it.
+dnl
+dnl On MinGW, struct timespec is in <pthread.h>.
+AC_MSG_CHECKING(for struct timespec)
+AC_CACHE_VAL(scm_cv_struct_timespec,
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#include <time.h>
+#if HAVE_PTHREAD_H
+#include <pthread.h>
+#endif]], [[struct timespec t; t.tv_nsec = 100]])],
+ [scm_cv_struct_timespec="yes"],
+ [scm_cv_struct_timespec="no"]))
+AC_MSG_RESULT($scm_cv_struct_timespec)
+if test $scm_cv_struct_timespec = yes; then
+ dnl Don't call it `HAVE_STRUCT_TIMESPEC' because pthread-win32's
+ dnl <pthread.h> checks whether that macro is defined.
+ AC_DEFINE([HAVE_SYSTEM_STRUCT_TIMESPEC], 1,
+ [Define this if your system defines struct timespec via either <time.h> or <pthread.h>.])
+fi
+
#--------------------------------------------------------------------
#
# Flags for thread support
pf ("\n");
pf ("/* same as POSIX \"struct timespec\" -- always defined */\n");
-#ifdef HAVE_STRUCT_TIMESPEC
+#ifdef HAVE_SYSTEM_STRUCT_TIMESPEC
pf ("typedef struct timespec scm_t_timespec;\n");
#else
pf ("/* POSIX.4 structure for a time value. This is like a `struct timeval'"