* Makefile.in (CXX_FOR_TARGET_FOR_RECURSIVE_MAKE, RECURSE_FLAGS):

New macros.
(bootstrap, cross): Use RECURSE_FLAGS.
* configure.in: Subst CXX_FOR_TARGET_FOR_RECURSIVE_MAKE.

ChangeLog

@@ -1,3 +1,10 @@
+2001-04-01  Alexandre Oliva  <aoliva@redhat.com>
+
+	* Makefile.in (CXX_FOR_TARGET_FOR_RECURSIVE_MAKE, RECURSE_FLAGS):
+	New macros.
+	(bootstrap, cross): Use RECURSE_FLAGS.
+	* configure.in: Subst CXX_FOR_TARGET_FOR_RECURSIVE_MAKE.
+
 2001-03-27  Alexandre Oliva  <aoliva@redhat.com>
 
 	* configure.in (CXX_FOR_TARGET): Use xgcc for libstdc++-v3.

Makefile.in

@@ -220,6 +220,7 @@ FLAGS_FOR_TARGET =
 CC_FOR_TARGET =
 CHILL_FOR_TARGET =
 CXX_FOR_TARGET =
+CXX_FOR_TARGET_FOR_RECURSIVE_MAKE =
 
 # If GCC_FOR_TARGET is not overriden on the command line, then this
 # variable is passed down to the gcc Makefile, where it is used to
@@ -385,6 +386,14 @@ BASE_FLAGS_TO_PASS = \
 	"target_alias=$(target_alias)" \
 	"libsubdir=$(libsubdir)"
 
+# For any flags above that may contain shell code that varies from one
+# target library to another.  When doing recursive invocations of the
+# top-level Makefile, we don't want the outer make to evaluate them,
+# so we pass these variables down unchanged.  They must not contain
+# single nor double quotes.
+RECURSE_FLAGS = \
+	CXX_FOR_TARGET='$(CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)'
+
 # Flags to pass down to most sub-makes, in which we're building with
 # the host environment.
 # If any variables are added here, they must be added to do-*, below.
@@ -1349,7 +1358,8 @@ $(ALL_TARGET_MODULES):
 	  r=`pwd`; export r; \
 	  s=`cd $(srcdir); pwd`; export s; \
 	  $(SET_LIB_PATH) \
-	  (cd $(TARGET_SUBDIR)/$${dir}; $(MAKE) $(TARGET_FLAGS_TO_PASS) all); \
+	  (cd $(TARGET_SUBDIR)/$${dir}; \
+	    $(MAKE) $(TARGET_FLAGS_TO_PASS) all); \
 	else \
 	  true; \
 	fi
@@ -1363,7 +1373,8 @@ $(CHECK_TARGET_MODULES):
 	  r=`pwd`; export r; \
 	  s=`cd $(srcdir); pwd`; export s; \
 	  $(SET_LIB_PATH) \
-	  (cd $(TARGET_SUBDIR)/$${dir};$(MAKE) $(TARGET_FLAGS_TO_PASS) check);\
+	  (cd $(TARGET_SUBDIR)/$${dir}; \
+	    $(MAKE) $(TARGET_FLAGS_TO_PASS) check);\
 	else \
 	  true; \
 	fi
@@ -1478,7 +1489,7 @@ bootstrap bootstrap-lean bootstrap2 bootstrap2-lean bootstrap3 bootstrap3-lean b
 	s=`cd $(srcdir); pwd` ; export s; \
 	$(SET_LIB_PATH) \
 	echo "Building runtime libraries"; \
-	$(MAKE) $(BASE_FLAGS_TO_PASS) all
+	$(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) all
 
 .PHONY: cross
 cross: all-texinfo all-bison all-byacc all-binutils all-gas all-ld
@@ -1491,7 +1502,8 @@ cross: all-texinfo all-bison all-byacc all-binutils all-gas all-ld
 	s=`cd $(srcdir); pwd` ; export s; \
 	$(SET_LIB_PATH) \
 	echo "Building runtime libraries"; \
-	$(MAKE) $(BASE_FLAGS_TO_PASS) all LANGUAGES="c c++"
+	$(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) \
+	  LANGUAGES="c c++" all
 
 .PHONY: check-gcc
 check-gcc:

configure.in

@@ -1384,7 +1384,15 @@ case $CXX_FOR_TARGET in
 *' $(FLAGS_FOR_TARGET)') ;;
 *) CXX_FOR_TARGET=$CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)' ;;
 esac
-qCXX_FOR_TARGET=`echo "$CXX_FOR_TARGET" | sed 's,&,\\\&,g'`
+qCXX_FOR_TARGET=`echo "$CXX_FOR_TARGET" | sed 's,[&%],\\\&,g'`
+
+# We want to defer the evaluation of `cmd`s and shell variables in
+# CXX_FOR_TARGET when recursing in the top-level Makefile, such as for
+# bootstrap.  We'll enclose CXX_FOR_TARGET_FOR_RECURSIVE_MAKE in single
+# quotes, but we still have to duplicate `$'s so that shell variables
+# can be expanded by the nested make as shell variables, not as make
+# macros.
+qqCXX_FOR_TARGET=`echo "$qCXX_FOR_TARGET" | sed -e 's,[$][$],$$$$,g'`
 
 targargs="--cache-file=../config.cache --host=${target_alias} --build=${build_alias} ${targargs}"
 sed -e "s:^TARGET_CONFIGDIRS[ 	]*=.*$:TARGET_CONFIGDIRS = ${target_configdirs}:" \
@@ -1393,6 +1401,7 @@ sed -e "s:^TARGET_CONFIGDIRS[ 	]*=.*$:TARGET_CONFIGDIRS = ${target_configdirs}:"
     -e "s%^CC_FOR_TARGET[ 	]*=.*$%CC_FOR_TARGET = ${CC_FOR_TARGET}%" \
     -e "s%^CHILL_FOR_TARGET[ 	]*=.*$%CHILL_FOR_TARGET = ${CHILL_FOR_TARGET}%" \
     -e "s%^CXX_FOR_TARGET[ 	]*=.*$%CXX_FOR_TARGET = ${qCXX_FOR_TARGET}%" \
+    -e "s%^CXX_FOR_TARGET_FOR_RECURSIVE_MAKE[ 	]*=.*$%CXX_FOR_TARGET_FOR_RECURSIVE_MAKE = ${qqCXX_FOR_TARGET}%" \
     -e "s%^TARGET_SUBDIR[ 	]*=.*$%TARGET_SUBDIR = ${target_subdir}%" \
     -e "s%^gxx_include_dir[ 	]*=.*$%gxx_include_dir=${gxx_include_dir}%" \
        Makefile > Makefile.tem