From 5e869c353c01f168712ae33cb7de2e9ba5cdf658 Mon Sep 17 00:00:00 2001
From: Shantonu Sen <ssen@apple.com>
Date: Wed, 2 Sep 2009 23:52:23 +0000
Subject: [PATCH] Improve support for cross-hosted builds of LLVM.
 --build=triple and other configure options are passed to the BuildTools/
 sub-invocation more consistently

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80854 91177308-0d34-0410-b5e6-96231b3b80d8
---
 Makefile           | 13 +++++++++++--
 Makefile.config.in |  3 +++
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 5d10f8e237f..b8d4367e72b 100644
--- a/Makefile
+++ b/Makefile
@@ -88,10 +88,19 @@ cross-compile-build-tools:
 	$(Verb) if [ ! -f BuildTools/Makefile ]; then \
           $(MKDIR) BuildTools; \
 	  cd BuildTools ; \
-	  $(PROJ_SRC_DIR)/configure ; \
+	  $(PROJ_SRC_DIR)/configure --build=$(BUILD_TRIPLE) \
+		--host=$(BUILD_TRIPLE) --target=$(BUILD_TRIPLE); \
 	  cd .. ; \
 	fi; \
-        ($(MAKE) -C BuildTools BUILD_DIRS_ONLY=1 ) || exit 1;
+        ($(MAKE) -C BuildTools \
+	  BUILD_DIRS_ONLY=1 \
+	  UNIVERSAL= \
+	  ENABLE_OPTIMIZED=$(ENABLE_OPTIMIZED) \
+	  ENABLE_PROFILING=$(ENABLE_PROFILING) \
+	  ENABLE_COVERAGE=$(ENABLE_COVERAGE) \
+	  DISABLE_ASSERTIONS=$(DISABLE_ASSERTIONS) \
+	  ENABLE_EXPENSIVE_CHECKS=$(ENABLE_EXPENSIVE_CHECKS) \
+	) || exit 1;
 endif
 
 # Include the main makefile machinery.
diff --git a/Makefile.config.in b/Makefile.config.in
index ecd05957d9d..bb68e4c2d36 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -110,6 +110,9 @@ BUILD_EXEEXT=@BUILD_EXEEXT@
 BUILD_CC=@BUILD_CC@
 BUILD_CXX=@BUILD_CXX@
 
+# Triple for configuring build tools when cross-compiling
+BUILD_TRIPLE=@build@
+
 # Target triple (cpu-vendor-os) for which we should generate code
 TARGET_TRIPLE=@target@
 
-- 
2.34.1