From 2a6530f91ad3fc7701cce87b99e2566dc621497a Mon Sep 17 00:00:00 2001
From: John Criswell <criswell@uiuc.edu>
Date: Fri, 27 Jun 2003 16:58:44 +0000
Subject: [PATCH] Added the OPTIONAL_DIRS variable for specifying optional
 directories to build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6926 91177308-0d34-0410-b5e6-96231b3b80d8
---
 Makefile.common | 12 ++++++++++++
 Makefile.rules  | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/Makefile.common b/Makefile.common
index 9a69fc4c7aa..88cdd97c00a 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -40,6 +40,7 @@
 #
 #===-----------------------------------------------------------------------====
 
+#
 # Configuration file to set paths specific to local installation of LLVM
 # 
 include $(LEVEL)/Makefile.config
@@ -340,6 +341,16 @@ test    :: $(addsuffix /.maketest   , $(PARALLEL_DIRS))
 	$(VERB) cd $(@D); $(MAKE) $(subst $(@D)/.make,,$@)
 endif
 
+ifdef OPTIONAL_DIRS
+all install clean test ::
+	$(VERB) for dir in ${OPTIONAL_DIRS}; do \
+		if [ -d $$dir ]; \
+		then\
+			(cd $$dir; $(MAKE) $@) || exit 1; \
+		fi \
+	done
+endif
+
 #---------------------------------------------------------
 # Handle the LIBRARYNAME option - used when building libs...
 #---------------------------------------------------------
@@ -489,6 +500,7 @@ $(USED_LIB_PATHS_G) $(USED_LIB_PATHS_O) $(USED_LIB_PATHS_P): \
         $(addsuffix /.makeall, $(PARALLEL_DIRS))
 
 all::   $(TOOLEXENAMES)
+
 clean::
 	$(VERB) rm -f $(TOOLEXENAMES)
 
diff --git a/Makefile.rules b/Makefile.rules
index 9a69fc4c7aa..88cdd97c00a 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -40,6 +40,7 @@
 #
 #===-----------------------------------------------------------------------====
 
+#
 # Configuration file to set paths specific to local installation of LLVM
 # 
 include $(LEVEL)/Makefile.config
@@ -340,6 +341,16 @@ test    :: $(addsuffix /.maketest   , $(PARALLEL_DIRS))
 	$(VERB) cd $(@D); $(MAKE) $(subst $(@D)/.make,,$@)
 endif
 
+ifdef OPTIONAL_DIRS
+all install clean test ::
+	$(VERB) for dir in ${OPTIONAL_DIRS}; do \
+		if [ -d $$dir ]; \
+		then\
+			(cd $$dir; $(MAKE) $@) || exit 1; \
+		fi \
+	done
+endif
+
 #---------------------------------------------------------
 # Handle the LIBRARYNAME option - used when building libs...
 #---------------------------------------------------------
@@ -489,6 +500,7 @@ $(USED_LIB_PATHS_G) $(USED_LIB_PATHS_O) $(USED_LIB_PATHS_P): \
         $(addsuffix /.makeall, $(PARALLEL_DIRS))
 
 all::   $(TOOLEXENAMES)
+
 clean::
 	$(VERB) rm -f $(TOOLEXENAMES)
 
-- 
2.34.1