* configure.ac: Create a cache file for libexec.

(cherry picked from commit e64286f53c4f5b6c0ed385edfd63a782a8c90b9b)

diff --git a/configure.ac b/configure.ac
index 53eeb89df94c00b56ad598e0f1a3501b6e99831f..190d13f58d423e44afa2de1d2817cda4629436ca 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -197,11 +197,16 @@ AS_IF([test "$XCONFIGURE" = "android"],[
 
   AC_MSG_NOTICE([configuring in `exec'])
 
+  # Derive a name for a cache file for this configure script from the
+  # current, if specified.
+  exec_cache_file=
+  AS_IF([test -n "$cache_file"],
+    [exec_cache_file="--cache-file=$cache_file.2"])
   OLDCWD=`pwd`
   cd exec
   $CONFIG_SHELL $emacs_srcdir/exec/configure           \
                --host=$host "CC=$CC" "LD=$CC" "AS=$CC" \
-               "AR=$AR" "CFLAGS=$CFLAGS"
+               "AR=$AR" "CFLAGS=$CFLAGS" $exec_cache_file
   emacs_val=$?
   cd $OLDCWD