diff options
author | Ludovic Courtès <ludo@gnu.org> | 2012-07-06 23:25:57 +0200 |
---|---|---|
committer | Ludovic Courtès <ludo@gnu.org> | 2012-07-06 23:25:57 +0200 |
commit | 005de2e8273853e155c21767b1c8bdb4f3f3ca53 (patch) | |
tree | 1f215bb57b2bc61926e3d27357f7c43e993e73b9 /m4/sys_time_h.m4 | |
parent | 32299e49e83b941082bee348c993630bb455a324 (diff) | |
download | guile-005de2e8273853e155c21767b1c8bdb4f3f3ca53.tar.gz |
Update Gnulib to v0.0-7509-g98a2286.
* Makefile.am (EXTRA_DIST): Add `m4/gnulib-cache.m4'.
* build-aux/git-version-gen: Keep unchanged.
Diffstat (limited to 'm4/sys_time_h.m4')
-rw-r--r-- | m4/sys_time_h.m4 | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/m4/sys_time_h.m4 b/m4/sys_time_h.m4 index bed379785..c4a30cda7 100644 --- a/m4/sys_time_h.m4 +++ b/m4/sys_time_h.m4 @@ -1,5 +1,5 @@ # Configure a replacement for <sys/time.h>. -# serial 7 +# serial 8 # Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation @@ -43,9 +43,40 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY], ]], [[static struct timeval x; x.tv_sec = x.tv_usec;]])], [gl_cv_sys_struct_timeval=yes], - [gl_cv_sys_struct_timeval=no])]) + [gl_cv_sys_struct_timeval=no]) + ]) if test $gl_cv_sys_struct_timeval != yes; then HAVE_STRUCT_TIMEVAL=0 + else + dnl On native Windows with a 64-bit 'time_t', 'struct timeval' is defined + dnl (in <sys/time.h> and <winsock2.h> for mingw64, in <winsock2.h> only + dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is + dnl smaller than the 'time_t' type mandated by POSIX. + dnl On OpenBSD 5.1 amd64, tv_sec is 64 bits and time_t 32 bits, but + dnl that is good enough. + AC_CACHE_CHECK([for wide-enough struct timeval.tv_sec member], + [gl_cv_sys_struct_timeval_tv_sec], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#if HAVE_SYS_TIME_H + #include <sys/time.h> + #endif + #include <time.h> + #if HAVE_WINSOCK2_H + # include <winsock2.h> + #endif + ]], + [[static struct timeval x; + typedef int verify_tv_sec_type[ + sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1 + ]; + ]])], + [gl_cv_sys_struct_timeval_tv_sec=yes], + [gl_cv_sys_struct_timeval_tv_sec=no]) + ]) + if test $gl_cv_sys_struct_timeval_tv_sec != yes; then + REPLACE_STRUCT_TIMEVAL=1 + fi fi dnl Check for declarations of anything we want to poison if the @@ -75,4 +106,5 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS], HAVE_STRUCT_TIMEVAL=1; AC_SUBST([HAVE_STRUCT_TIMEVAL]) HAVE_SYS_TIME_H=1; AC_SUBST([HAVE_SYS_TIME_H]) REPLACE_GETTIMEOFDAY=0; AC_SUBST([REPLACE_GETTIMEOFDAY]) + REPLACE_STRUCT_TIMEVAL=0; AC_SUBST([REPLACE_STRUCT_TIMEVAL]) ]) |