diff options
Diffstat (limited to 'gl/m4/open.m4')
| -rw-r--r-- | gl/m4/open.m4 | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/gl/m4/open.m4 b/gl/m4/open.m4 index 6e286c96..d705b3a1 100644 --- a/gl/m4/open.m4 +++ b/gl/m4/open.m4 @@ -1,5 +1,5 @@ -# open.m4 serial 5 -dnl Copyright (C) 2007-2009 Free Software Foundation, Inc. +# open.m4 serial 8 +dnl Copyright (C) 2007-2010 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -13,10 +13,15 @@ AC_DEFUN([gl_FUNC_OPEN], ;; *) dnl open("foo/") should not create a file when the file name has a - dnl trailing slash. + dnl trailing slash. FreeBSD only has the problem on symlinks. + AC_CHECK_FUNCS_ONCE([lstat]) AC_CACHE_CHECK([whether open recognizes a trailing slash], [gl_cv_func_open_slash], - [ + [# Assume that if we have lstat, we can also check symlinks. + if test $ac_cv_func_lstat = yes; then + touch conftest.tmp + ln -s conftest.tmp conftest.lnk + fi AC_TRY_RUN([ #include <fcntl.h> #if HAVE_UNISTD_H @@ -24,18 +29,22 @@ AC_DEFUN([gl_FUNC_OPEN], #endif int main () { +#if HAVE_LSTAT + if (open ("conftest.lnk/", O_RDONLY) != -1) return 2; +#endif return open ("conftest.sl/", O_CREAT, 0600) >= 0; }], [gl_cv_func_open_slash=yes], [gl_cv_func_open_slash=no], [ changequote(,)dnl case "$host_os" in + freebsd*) gl_cv_func_open_slash="guessing no" ;; solaris2.[0-9]*) gl_cv_func_open_slash="guessing no" ;; hpux*) gl_cv_func_open_slash="guessing no" ;; *) gl_cv_func_open_slash="guessing yes" ;; esac changequote([,])dnl ]) - rm -f conftest.sl + rm -f conftest.sl conftest.tmp conftest.lnk ]) case "$gl_cv_func_open_slash" in *no) @@ -51,16 +60,15 @@ changequote([,])dnl AC_DEFUN([gl_REPLACE_OPEN], [ AC_REQUIRE([gl_FCNTL_H_DEFAULTS]) - if test $REPLACE_OPEN != 1; then - AC_LIBOBJ([open]) - gl_PREREQ_OPEN - fi REPLACE_OPEN=1 + AC_LIBOBJ([open]) + gl_PREREQ_OPEN ]) # Prerequisites of lib/open.c. AC_DEFUN([gl_PREREQ_OPEN], [ AC_REQUIRE([AC_C_INLINE]) + AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T]) : ]) |