Mesa (mesa_7_7_branch): Simplify hackery added to fix AIX build.

[Jakob Bornecrantz]

Module: Mesa
Branch: mesa_7_7_branch
Commit: b9f4a0bd2b0104ce5f15dcd7d1698db710330418
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b9f4a0bd2b0104ce5f15dcd7d1698db710330418

Author: Tom Fogal <tfogal at alumni.unh.edu>
Date:   Tue Nov 24 16:46:31 2009 -0700

Simplify hackery added to fix AIX build.

Borrow an idiom from the GNU build system which can handle `for'
loops over empty lists.

---

 progs/Makefile |   26 +++++++++++---------------
 1 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/progs/Makefile b/progs/Makefile
index d5852fa..5bc444e 100644
--- a/progs/Makefile
+++ b/progs/Makefile
@@ -4,7 +4,7 @@ TOP = ..
 
 include $(TOP)/configs/current
 
-SUBDIRS = "$(strip "$(PROGRAM_DIRS)")"
+SUBDIRS = $(PROGRAM_DIRS)
 
 
 default: message subdirs
@@ -15,22 +15,18 @@ message:
 
 
 subdirs:
-	@if test -n "$(SUBDIRS)" ; then \
-		for dir in $(SUBDIRS) ; do \
-			if [ -d $$dir ] ; then \
-				(cd $$dir && $(MAKE)) || exit 1 ; \
-			fi \
-		done \
-	fi
+	@list='$(SUBDIRS)'; for dir in $$list ; do \
+		if [ -d $$dir ] ; then \
+			(cd $$dir && $(MAKE)) || exit 1 ; \
+		fi \
+	done
 
 # Dummy install target
 install:
 
 clean:
-	- at if test -n "$(SUBDIRS)" ; then \
-		for dir in $(SUBDIRS) tests ; do \
-			if [ -d $$dir ] ; then \
-				(cd $$dir && $(MAKE) clean) ; \
-			fi \
-		done \
-	fi
+	@list='$(SUBDIRS)'; for dir in $$list tests ; do \
+		if [ -d $$dir ] ; then \
+			(cd $$dir && $(MAKE) clean) ; \
+		fi \
+	done