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Diffstat (limited to 'm4/chdir-long.m4')
| -rw-r--r-- | m4/chdir-long.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/m4/chdir-long.m4 b/m4/chdir-long.m4 new file mode 100644 index 0000000..a528a5d --- /dev/null +++ b/m4/chdir-long.m4 @@ -0,0 +1,30 @@ +#serial 16 + +# Use Gnulib's robust chdir function. +# It can handle arbitrarily long directory names, which means +# that when it is given the name of an existing directory, it +# never fails with ENAMETOOLONG. +# Arrange to compile chdir-long.c only on systems that define PATH_MAX. + +dnl Copyright (C) 2004-2007, 2009-2020 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. + +# Written by Jim Meyering. + +AC_DEFUN([gl_FUNC_CHDIR_LONG], +[ + AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ]) + AC_CACHE_CHECK([whether this system has an arbitrary file name length limit], + [gl_cv_have_arbitrary_file_name_length_limit], + [AC_EGREP_CPP([have_arbitrary_file_name_length_limit], + gl_PATHMAX_SNIPPET[ +#ifdef PATH_MAX +have_arbitrary_file_name_length_limit +#endif], + [gl_cv_have_arbitrary_file_name_length_limit=yes], + [gl_cv_have_arbitrary_file_name_length_limit=no])]) +]) + +AC_DEFUN([gl_PREREQ_CHDIR_LONG], [:]) |