Rename AC_ prefixes to AX_ (only in names of aa macros!).

1 files changed, 83 insertions, 0 deletions

diff --git a/m4/ax_prog_cp_s.m4 b/m4/ax_prog_cp_s.m4
new file mode 100644
index 0000000..e24c84a
--- /dev/null
+++ b/m4/ax_prog_cp_s.m4
@@ -0,0 +1,83 @@
+# ===========================================================================
+#          http://www.nongnu.org/autoconf-archive/ax_prog_cp_s.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_PROG_CP_S
+#
+# DESCRIPTION
+#
+#   Check how to make a copy by creating a symbolic link to the original -
+#   it defines the variable CP_S for further use, which you should in fact
+#   treat like it used to be with be LN_S. The actual value is assured to be
+#   either LN_S (if the filesystem supports symbolic links) or CP (if the
+#   filesystem does not know about symbolic links and you need a copy of
+#   original file to have the same text in both places). In a gnu
+#   environment it will simply set CP_S="cp -s" since the gnu "cp"-command
+#   has the "-s" flag. You shall not try to use this command on directories
+#   since it would require a "-r" in the case of a copy that is not
+#   supported explicitly here. (I'm not sure if some "cp"-commands out there
+#   would barf at usage of "-r" on a normal file).
+#
+#   Use CP_S to create a copy of read-only data - if your filesystem
+#   supports it then a symbolic link is created - a process that is quicker
+#   and space-saving. However, if the target fs does not support symbolic
+#   links, just copy the data. Unlike ac_prog_ln_s this macro will never
+#   fail to set the CP_S ac_subst to something that works.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+AC_DEFUN([AX_PROG_CP_S],
+[AC_REQUIRE([AC_PROG_LN_S])dnl
+AC_MSG_CHECKING(whether cp -s works)
+AC_CACHE_VAL(ac_cv_prog_CP_S,
+[rm -f conftestdata
+if cp -s X conftestdata 2>/dev/null
+then
+  rm -f conftestdata
+  ac_cv_prog_CP_S="cp -s"
+else
+  ac_cv_prog_CP_S=cp
+fi
+if test "$LN_S" = "ln -s" ; then
+  ac_cv_prog_CP_S="ln -s"
+fi])dnl
+CP_S="$ac_cv_prog_CP_S"
+if test "$ac_cv_prog_CP_S" = "ln -s"; then
+  AC_MSG_RESULT(using ln -s)
+elif test "$ac_cv_prog_CP_S" = "cp -s"; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no, using cp)
+fi
+AC_SUBST(CP_S)dnl
+])