From ef0d0f12f0a37a0c4a907b67b04bcdc73c9dda9e Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 4 Sep 2006 04:47:21 +0000
Subject: [PATCH] Add a new make option (LINK_COMPONENTS) which tools can use
 to specify what libraries they need.  This uses llvm-config to link the
 tools.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30084 91177308-0d34-0410-b5e6-96231b3b80d8
---
 Makefile.rules | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/Makefile.rules b/Makefile.rules
index b08725a367f..ae1adc3663e 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -297,6 +297,7 @@ ifndef TBLGEN
     TBLGEN   := $(LLVMToolDir)/tblgen$(EXEEXT)
   endif
 endif
+LLVM_CONFIG := $(LLVMToolDir)/llvm-config 
 ifndef GCCAS
 GCCAS    := $(LLVMToolDir)/gccas$(EXEEXT)
 endif
@@ -629,7 +630,6 @@ endif
 # JIT support for a library or a tool that runs JIT.
 #---------------------------------------------------------
 ifeq ($(firstword $(LLVMLIBS)),config)
-LLVM_CONFIG := $(LLVM_SRC_ROOT)/utils/llvm-config/llvm-config 
 LLVMLIBS := $(shell $(LLVM_CONFIG) --libnames $(wordlist 2,9999,$(LLVMLIBS)))
 LLVMLIBS := $(patsubst lib%.a,%.a,$(LLVMLIBS))
 LLVMLIBS := $(patsubst %.o,%,$(LLVMLIBS))
@@ -690,17 +690,27 @@ endif
 # Define various command line options pertaining to the
 # libraries needed when linking. There are "Proj" libs 
 # (defined by the user's project) and "LLVM" libs (defined 
-# by the # LLVM project).
+# by the LLVM project).
 #---------------------------------------------------------
 
+ifdef USEDLIBS
 ProjLibsOptions := $(patsubst %.a.o, -l%, $(addsuffix .o, $(USEDLIBS)))
 ProjLibsOptions := $(patsubst %.o, $(LibDir)/%.o,  $(ProjLibsOptions))
+ProjUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(USEDLIBS)))
+ProjLibsPaths   := $(addprefix $(LibDir)/,$(ProjUsedLibs))
+endif
+
+ifdef LLVMLIBS
 LLVMLibsOptions := $(patsubst %.a.o, -l%, $(addsuffix .o, $(LLVMLIBS)))
 LLVMLibsOptions := $(patsubst %.o, $(LLVMLibDir)/%.o, $(LLVMLibsOptions))
-ProjUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(USEDLIBS)))
 LLVMUsedLibs    := $(patsubst %.a.o, lib%.a, $(addsuffix .o, $(LLVMLIBS)))
-ProjLibsPaths   := $(addprefix $(LibDir)/,$(ProjUsedLibs))
 LLVMLibsPaths   := $(addprefix $(LLVMLibDir)/,$(LLVMUsedLibs))
+endif
+
+ifdef LINK_COMPONENTS
+ProjLibsOptions := $(shell $(LLVM_CONFIG) --libs     $(LINK_COMPONENTS))
+ProjLibsPaths   := $(shell $(LLVM_CONFIG) --libfiles $(LINK_COMPONENTS))
+endif
 
 ###############################################################################
 # Library Build Rules: Four ways to build a library
-- 
2.34.1