* config-ml.in: Robustify ac_configure_args parsing.

From-SVN: r211645

diff --git a/ChangeLog b/ChangeLog
index 98414d213796d88df829d5c09bbca1e356458271..fc6a3365c26e9cd4d04fd57649992339c7150657 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2014-06-13  Thomas Schwinge  <thomas@codesourcery.com>
 
+       * config-ml.in: Robustify ac_configure_args parsing.
+
        * configure.ac (--enable-linker-plugin-configure-flags)
        (--enable-linker-plugin-flags): New flags.
        (configdirs): Conditionally add libiberty-linker-plugin.

diff --git a/config-ml.in b/config-ml.in
index 11983461c28625b58678bbbc95cfaf41a67298d8..927bad66dc094283cceae5abf8f09e3414b99e51 100644 (file)
--- a/config-ml.in
+++ b/config-ml.in
@@ -2,7 +2,7 @@
 # wanting multilib support.
 #
 # Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-# 2005, 2006, 2007, 2008, 2010, 2011  Free Software Foundation, Inc.
+# 2005, 2006, 2007, 2008, 2010, 2011, 2014 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -105,31 +105,34 @@ ml_realsrcdir=${srcdir}
 
 # Scan all the arguments and set all the ones we need.
 
-ml_verbose=--verbose
-for option in ${ac_configure_args}
-do
-  # strip single quotes surrounding individual options
-  case $option in
-  \'*\') eval option=$option ;;
-  esac
-
-  case $option in
-  --*) ;;
-  -*) option=-$option ;;
-  esac
-
-  case $option in
-  --*=*)
+scan_arguments ()
+{
+  ml_verbose=--verbose
+  for option
+  do
+    # Strip single quotes surrounding individual options, that is, remove one
+    # level of shell quoting for these.
+    case $option in
+      \'*\') eval option=$option ;;
+    esac
+
+    case $option in
+      --*) ;;
+      -*) option=-$option ;;
+    esac
+
+    case $option in
+      --*=*)
        optarg=`echo $option | sed -e 's/^[^=]*=//'`
        ;;
-  esac
+    esac
 
-  case $option in
-  --disable-*)
+    case $option in
+      --disable-*)
        enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
        eval $enableopt=no
        ;;
-  --enable-*)
+      --enable-*)
        case "$option" in
        *=*)    ;;
        *)      optarg=yes ;;
@@ -139,32 +142,37 @@ do
        # Don't undo its work.
        case $enableopt in
        enable_shared | enable_static) ;;
-       *) eval $enableopt="$optarg" ;;
+       *) eval $enableopt='$optarg' ;;
        esac
        ;;
-  --norecursion | --no-recursion)
+      --norecursion | --no-recursion)
        ml_norecursion=yes
        ;;
-  --silent | --sil* | --quiet | --q*)
+      --silent | --sil* | --quiet | --q*)
        ml_verbose=--silent
        ;;
-  --verbose | --v | --verb*)
+      --verbose | --v | --verb*)
        ml_verbose=--verbose
        ;;
-  --with-*)
+      --with-*)
        case "$option" in
        *=*)    ;;
        *)      optarg=yes ;;
        esac
        withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
-       eval $withopt="$optarg"
+       eval $withopt='$optarg'
        ;;
-  --without-*)
+      --without-*)
        withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
        eval $withopt=no
        ;;
-  esac
-done
+    esac
+  done
+}
+# Use eval to properly handle configure arguments such as
+# --enable-foo='--enable-a=1 --enable-b=2 --enable-c=3'.
+eval scan_arguments "${ac_configure_args}"
+unset scan_arguments
 
 # Only do this if --enable-multilib.
 if [ "${enable_multilib}" = yes ]; then
@@ -860,7 +868,7 @@ if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 
     if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
        --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
-       ${ac_configure_args} ${ml_config_env} ${ml_srcdiroption} ; then
+       "${ac_configure_args}" ${ml_config_env} ${ml_srcdiroption} ; then
       true
     else
       exit 1