etc: rename configure.in to configure.ac

The .in name has been deprecated for a long time in favor of .ac.

diff --git a/etc/configure.ac b/etc/configure.ac
new file mode 100644 (file)
index 0000000..0e39559
--- /dev/null
+++ b/etc/configure.ac
@@ -0,0 +1,26 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_INIT(Makefile.in)
+
+AC_PROG_INSTALL
+
+# Command-line options.
+# Very limited version of AC_MAINTAINER_MODE.
+AC_ARG_ENABLE([maintainer-mode],
+  [AC_HELP_STRING([--enable-maintainer-mode],
+                 [enable make rules and dependencies not useful (and
+                  sometimes confusing) to the casual installer])],
+  [case ${enable_maintainer_mode} in
+     yes) MAINT='' ;;
+     no) MAINT='#' ;;
+     *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
+   esac
+   maintainer_mode=${enableval}],
+  [MAINT='#'])
+AC_SUBST([MAINT])dnl
+
+AC_SUBST(datarootdir)
+AC_SUBST(docdir)
+AC_SUBST(htmldir)
+AC_SUBST(pdfdir)
+
+AC_OUTPUT(Makefile)

diff --git a/etc/configure.in b/etc/configure.in
deleted file mode 100644 (file)
index 0e39559..0000000
--- a/etc/configure.in
+++ /dev/null
@@ -1,26 +0,0 @@
-dnl Process this file with autoconf to produce a configure script.
-AC_INIT(Makefile.in)
-
-AC_PROG_INSTALL
-
-# Command-line options.
-# Very limited version of AC_MAINTAINER_MODE.
-AC_ARG_ENABLE([maintainer-mode],
-  [AC_HELP_STRING([--enable-maintainer-mode],
-                 [enable make rules and dependencies not useful (and
-                  sometimes confusing) to the casual installer])],
-  [case ${enable_maintainer_mode} in
-     yes) MAINT='' ;;
-     no) MAINT='#' ;;
-     *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
-   esac
-   maintainer_mode=${enableval}],
-  [MAINT='#'])
-AC_SUBST([MAINT])dnl
-
-AC_SUBST(datarootdir)
-AC_SUBST(docdir)
-AC_SUBST(htmldir)
-AC_SUBST(pdfdir)
-
-AC_OUTPUT(Makefile)