https://git.ruby-lang.org/ruby.git/commit/?id=67e54ce408

From 67e54ce4081abaa16774b93ccd33ccbd1d6c6531 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Thu, 7 Jul 2022 13:20:10 +0900
Subject: Fallback `mkdir_p` to `as_mkdir_p`

Assume `mkdir -p` to be race-free on recent systems.
And we do not provide install-sh anyway.
---
 configure.ac                  | 13 ++-----------
 tool/m4/ruby_prog_makedirs.m4 |  9 +++++++++
 2 files changed, 11 insertions(+), 11 deletions(-)
 create mode 100644 tool/m4/ruby_prog_makedirs.m4

diff --git a/configure.ac b/configure.ac
index 03677d85e2..081cbac074 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,6 +32,7 @@ m4_include([tool/m4/ruby_func_attribute.m4])dnl https://github.com/ruby/ruby/blob/trunk/configure.ac#L32
 m4_include([tool/m4/ruby_mingw32.m4])dnl
 m4_include([tool/m4/ruby_prepend_option.m4])dnl
 m4_include([tool/m4/ruby_prog_gnu_ld.m4])dnl
+m4_include([tool/m4/ruby_prog_makedirs.m4])dnl
 m4_include([tool/m4/ruby_replace_funcs.m4])dnl
 m4_include([tool/m4/ruby_replace_type.m4])dnl
 m4_include([tool/m4/ruby_require_funcs.m4])dnl
@@ -491,17 +492,7 @@ AS_CASE(["$target_os"], https://github.com/ruby/ruby/blob/trunk/configure.ac#L492
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_PROG_INSTALL
-AC_PROG_MKDIR_P
-AS_IF([test "x$MKDIR_P" = "x -d"], [
-  AS_IF([test x"$as_mkdir_p" != xfalse], [
-    MKDIR_P='mkdir -p'
-    echo "use 'mkdir -p' as MKDIR_P"
-  ], [
-    AC_MSG_ERROR([mkdir -p is required])
-  ])
-])
-MAKEDIRS="$MKDIR_P"
-AC_SUBST(MAKEDIRS)
+RUBY_PROG_MAKEDIRS
 
 AC_CHECK_PROG([DTRACE], [${ac_tool_prefix}dtrace], [${ac_tool_prefix}dtrace])
 AS_IF([test "$cross_compiling:$ac_cv_prog_DTRACE" = no: -a -n "$ac_tool_prefix"], [
diff --git a/tool/m4/ruby_prog_makedirs.m4 b/tool/m4/ruby_prog_makedirs.m4
new file mode 100644
index 0000000000..132ff7768f
--- /dev/null
+++ b/tool/m4/ruby_prog_makedirs.m4
@@ -0,0 +1,9 @@ https://github.com/ruby/ruby/blob/trunk/tool/m4/ruby_prog_makedirs.m4#L1
+dnl -*- Autoconf -*-
+m4_defun([RUBY_PROG_MAKEDIRS],
+    [m4_bpatsubst(m4_defn([AC_PROG_MKDIR_P]),
+        [MKDIR_P=\"$ac_install_sh -d\"], [
+        AS_IF([test "x$MKDIR_P" = "xfalse"], [AC_MSG_ERROR([mkdir -p is required])])
+        MKDIR_P="mkdir -p"])
+    ]dnl
+    AC_SUBST(MAKEDIRS, ["$MKDIR_P"])
+)
-- 
cgit v1.2.1


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