build: Fix "make install" for MinGW

Since r8-4925, the "make install" recipe generates a path which can start
with "//", causing problems for some Windows environments. Fix by removing
the redundant slash.

gcc/cp/ChangeLog:

	* Make-lang.in: Remove redundant slash.

diff --git a/gcc/cp/Make-lang.in b/gcc/cp/Make-lang.in
index 026cf8d708838fa45dab467443dbc7bb51a0327a..e792ea4ddf3625dd281004b8e0fcbac3c5becb9f 100644 (file)
--- a/gcc/cp/Make-lang.in
+++ b/gcc/cp/Make-lang.in
@@ -344,7 +344,7 @@ c++.install-plugin: installdirs
 # Install import library.
 ifeq ($(plugin_implib),yes)
        $(mkinstalldirs) $(DESTDIR)$(plugin_resourcesdir)
-       $(INSTALL_DATA) cc1plus$(exeext).a $(DESTDIR)/$(plugin_resourcesdir)/cc1plus$(exeext).a
+       $(INSTALL_DATA) cc1plus$(exeext).a $(DESTDIR)$(plugin_resourcesdir)/cc1plus$(exeext).a
 endif
 
 c++.uninstall: