[commit: ghc] master: Build system: use `mkdir -p` instead of `-mkdir` (a065a3a)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/a065a3ae6063eae4c45797ecc5c9b9c822534d2a/ghc

>---------------------------------------------------------------

commit a065a3ae6063eae4c45797ecc5c9b9c822534d2a
Author: Thomas Miedema <thomasmiedema at gmail.com>
Date:   Sun May 24 12:34:05 2015 +0200

    Build system: use `mkdir -p` instead of `-mkdir`
    
    Avoid unnecessary warnings.
    
    [skip ci]


>---------------------------------------------------------------

a065a3ae6063eae4c45797ecc5c9b9c822534d2a
 utils/mkdirhier/ghc.mk | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/utils/mkdirhier/ghc.mk b/utils/mkdirhier/ghc.mk
index a656577..55803f0 100644
--- a/utils/mkdirhier/ghc.mk
+++ b/utils/mkdirhier/ghc.mk
@@ -11,9 +11,8 @@
 # -----------------------------------------------------------------------------
 
 $(MKDIRHIER) : utils/mkdirhier/mkdirhier.sh
-	-mkdir $(INPLACE)
-	-mkdir $(INPLACE_BIN)
-	-mkdir $(INPLACE_LIB)
+	mkdir -p $(INPLACE_BIN)
+	mkdir -p $(INPLACE_LIB)
 	$(call removeFiles,$@)
 	echo '#!$(SHELL)'  		 >> $@
 	cat utils/mkdirhier/mkdirhier.sh >> $@