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Diffstat (limited to 'gnulib/m4/mkstemp.m4')
| -rw-r--r-- | gnulib/m4/mkstemp.m4 | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/gnulib/m4/mkstemp.m4 b/gnulib/m4/mkstemp.m4 new file mode 100644 index 0000000..20d8a1b --- /dev/null +++ b/gnulib/m4/mkstemp.m4 @@ -0,0 +1,56 @@ +#serial 17 + +# Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# On some hosts (e.g., HP-UX 10.20, SunOS 4.1.4, Solaris 2.5.1), mkstemp has a +# silly limit that it can create no more than 26 files from a given template. +# Other systems lack mkstemp altogether. +# On OSF1/Tru64 V4.0F, the system-provided mkstemp function can create +# only 32 files per process. +# On systems like the above, arrange to use the replacement function. +AC_DEFUN([gl_FUNC_MKSTEMP], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([AC_SYS_LARGEFILE]) + + AC_CACHE_CHECK([for working mkstemp], + [gl_cv_func_working_mkstemp], + [ + mkdir conftest.mkstemp + AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [AC_INCLUDES_DEFAULT], + [[int i; + off_t large = (off_t) 4294967295u; + if (large < 0) + large = 2147483647; + for (i = 0; i < 70; i++) + { + char templ[] = "conftest.mkstemp/coXXXXXX"; + int (*mkstemp_function) (char *) = mkstemp; + int fd = mkstemp_function (templ); + if (fd < 0 || lseek (fd, large, SEEK_SET) != large) + return 1; + close (fd); + } + return 0;]])], + [gl_cv_func_working_mkstemp=yes], + [gl_cv_func_working_mkstemp=no], + [gl_cv_func_working_mkstemp=no]) + rm -rf conftest.mkstemp + ]) + + if test $gl_cv_func_working_mkstemp != yes; then + REPLACE_MKSTEMP=1 + AC_LIBOBJ([mkstemp]) + gl_PREREQ_MKSTEMP + fi +]) + +# Prerequisites of lib/mkstemp.c. +AC_DEFUN([gl_PREREQ_MKSTEMP], +[ +]) |