--- configure
+++ configure
@@ -17942,7 +17942,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -18230,7 +18230,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -19676,7 +19676,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -22525,7 +22525,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -24251,7 +24251,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -34015,7 +34015,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -34479,7 +34479,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -37507,7 +37507,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -39014,7 +39014,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -39259,7 +39259,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -39527,7 +39527,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -39787,7 +39787,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -40833,7 +40833,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -41238,7 +41238,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -43189,7 +43189,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"
@@ -43305,7 +43305,7 @@
      *)       library_path_var=LD_LIBRARY_PATH ;;
    esac
 
-   eval "old=$$library_path_var"
+   eval "old=\$$library_path_var"
    eval "$library_path_var=\$CURL_LIBRARY_PATH:\$old"
 
    eval "export $library_path_var"