X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=libstdc%2B%2B-v3%2Finclude%2FMakefile.am;h=a867f009c3a43fea44af8aa286c42d8cd46b50ff;hp=22ac39c436b0c14e34ecf6b4ab1bd4274b411326;hb=2360a55cc763a4f343b9b855be8e5d52ccd48eda;hpb=6bb3458a29e18c9f70c866dbf42aff799e1d7b78

diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 22ac39c436b..a867f009c3a 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -1196,8 +1196,10 @@ install-headers:
 	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${debug_builddir}
 	for file in ${debug_headers}; do \
 	  $(INSTALL_DATA) $${file} $(DESTDIR)${gxx_include_dir}/${debug_builddir}; done
-	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${parallel_builddir}
-	for file in ${parallel_headers}; do \
+	parallel_headers_install='${parallel_headers}';\
+	test -z "$$parallel_headers_install" || \
+	  $(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${parallel_builddir};\
+	for file in $$parallel_headers_install; do \
 	  $(INSTALL_DATA) $${file} $(DESTDIR)${gxx_include_dir}/${parallel_builddir}; done
 	$(mkinstalldirs) $(DESTDIR)${host_installdir}
 	for file in ${host_headers} ${host_headers_extra} \