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-rw-r--r--m4/mkdir.m487
1 files changed, 87 insertions, 0 deletions
diff --git a/m4/mkdir.m4 b/m4/mkdir.m4
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+++ b/m4/mkdir.m4
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+# serial 17
+
+# Copyright (C) 2001, 2003-2004, 2006, 2008-2022 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 systems, mkdir ("foo/", 0700) fails because of the trailing slash.
+# On others, mkdir ("foo/./", 0700) mistakenly succeeds.
+# On such systems, arrange to use a wrapper function.
+AC_DEFUN([gl_FUNC_MKDIR],
+[dnl
+ AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CHECK_HEADERS_ONCE([unistd.h])
+ AC_CACHE_CHECK([whether mkdir handles trailing slash],
+ [gl_cv_func_mkdir_trailing_slash_works],
+ [rm -rf conftest.dir
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ ]GL_MDA_DEFINES],
+ [[return mkdir ("conftest.dir/", 0700);]])],
+ [gl_cv_func_mkdir_trailing_slash_works=yes],
+ [gl_cv_func_mkdir_trailing_slash_works=no],
+ [case "$host_os" in
+ # Guess yes on Linux systems.
+ linux-* | linux) gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
+ # Guess yes on glibc systems.
+ *-gnu* | gnu*) gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
+ # Guess yes on MSVC, no on mingw.
+ mingw*) AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+ ],
+ [gl_cv_func_mkdir_trailing_slash_works="guessing yes"],
+ [gl_cv_func_mkdir_trailing_slash_works="guessing no"])
+ ;;
+ # If we don't know, obey --enable-cross-guesses.
+ *) gl_cv_func_mkdir_trailing_slash_works="$gl_cross_guess_normal" ;;
+ esac
+ ])
+ rm -rf conftest.dir
+ ])
+ case "$gl_cv_func_mkdir_trailing_slash_works" in
+ *yes) ;;
+ *)
+ REPLACE_MKDIR=1
+ ;;
+ esac
+
+ AC_CACHE_CHECK([whether mkdir handles trailing dot],
+ [gl_cv_func_mkdir_trailing_dot_works],
+ [rm -rf conftest.dir
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ ]GL_MDA_DEFINES],
+ [[return !mkdir ("conftest.dir/./", 0700);]])],
+ [gl_cv_func_mkdir_trailing_dot_works=yes],
+ [gl_cv_func_mkdir_trailing_dot_works=no],
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu* | gnu*) gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
+ # Guess yes on musl systems.
+ *-musl*) gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
+ # Guess no on native Windows.
+ mingw*) gl_cv_func_mkdir_trailing_dot_works="guessing no" ;;
+ # If we don't know, obey --enable-cross-guesses.
+ *) gl_cv_func_mkdir_trailing_dot_works="$gl_cross_guess_normal" ;;
+ esac
+ ])
+ rm -rf conftest.dir
+ ]
+ )
+ case "$gl_cv_func_mkdir_trailing_dot_works" in
+ *yes) ;;
+ *)
+ REPLACE_MKDIR=1
+ AC_DEFINE([FUNC_MKDIR_DOT_BUG], [1], [Define to 1 if mkdir mistakenly
+ creates a directory given with a trailing dot component.])
+ ;;
+ esac
+])