Index: build.bat
===================================================================
--- build.bat	(revision 49708)
+++ build.bat	(working copy)
@@ -318,7 +318,7 @@
 if not "_%BOOST_JAM_TOOLSET_ROOT%_" == "__" (
     set "PATH=%BOOST_JAM_TOOLSET_ROOT%Bin;%PATH%"
     )
-set "BOOST_JAM_CC=bcc32 -WC -w- -q -I%BOOST_JAM_TOOLSET_ROOT%Include -L%BOOST_JAM_TOOLSET_ROOT%Lib /DNT -nbootstrap"
+set "BOOST_JAM_CC=bcc32 -WC -w- -q "-I%BOOST_JAM_TOOLSET_ROOT%Include" "-L%BOOST_JAM_TOOLSET_ROOT%Lib" /DNT -nbootstrap"
 set "BOOST_JAM_OPT_JAM=-ejam0"
 set "BOOST_JAM_OPT_MKJAMBASE=-emkjambasejam0"
 set "BOOST_JAM_OPT_YYACC=-eyyacc0"
Index: build.jam
===================================================================
--- build.jam	(revision 49708)
+++ build.jam	(working copy)
@@ -152,7 +152,7 @@
     : -L$(--python-lib[1]) -l$(--python-lib[2]) ;
 ## Borland C++ 5.5.x
 toolset borland bcc32 : -e -n : /D
-    : -WC -w- -q "-I$(toolset-root)Include" "-L$(toolset-root)Lib"
+    : -WC -w- -q "\"-I$(toolset-root)Include\"" "\"-L$(toolset-root)Lib\""
     [ opt --release : -O2 -vi -w-inl ]
     [ opt --debug : -v -Od -vi- ]
     -I$(--python-include) -I$(--extra-include)