From 58194307c1a45f6a20f5ed421c97309a9e007e46 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Mon, 11 Apr 2011 22:37:39 +0000
Subject: build: Add support for a SHOW_DIAGNOSTICS build variable.

If enabled, this will attempt to use the CC_LOG_DIAGNOSTICS feature I dropped
into Clang to print a log of all the diagnostics generated during an individual
build (from the top-level). Not sure if this will actually be useful, but for
now it is handy for testing the option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129312 91177308-0d34-0410-b5e6-96231b3b80d8
---
 Makefile.rules | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

(limited to 'Makefile.rules')

diff --git a/Makefile.rules b/Makefile.rules
index cde6ba5333..3001262d73 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -646,25 +646,41 @@ CPP.Flags     += $(sort -I$(PROJ_OBJ_DIR) -I$(PROJ_SRC_DIR) \
 	         $(LLVM_OBJ_ROOT) $(LLVM_SRC_ROOT))) \
 	         $(CPP.BaseFlags)
 
+# SHOW_DIAGNOSTICS support.
+ifeq ($(SHOW_DIAGNOSTICS),1)
+  Compile.Wrapper := env CC_LOG_DIAGNOSTICS=1 \
+	                  CC_LOG_DIAGNOSTICS_FILE="$(LLVM_OBJ_ROOT)/$(BuildMode)/diags"
+else
+  Compile.Wrapper :=
+endif
+
 ifeq ($(BUILD_COMPONENT), 1)
-  Compile.C     = $(BUILD_CC) $(CPP.Flags) $(C.Flags) $(CFLAGS) $(CPPFLAGS) \
+  Compile.C     = $(Compile.Wrapper) \
+	          $(BUILD_CC) $(CPP.Flags) $(C.Flags) $(CFLAGS) $(CPPFLAGS) \
                   $(TargetCommonOpts) $(CompileCommonOpts) -c
-  Compile.CXX   = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
+  Compile.CXX   = $(Compile.Wrapper) \
+	          $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
 		  $(CPPFLAGS) \
                   $(TargetCommonOpts) $(CompileCommonOpts) -c
-  Preprocess.CXX= $(BUILD_CXX) $(CPP.Flags) $(CPPFLAGS) $(TargetCommonOpts) \
+  Preprocess.CXX= $(Compile.Wrapper) \
+	          $(BUILD_CXX) $(CPP.Flags) $(CPPFLAGS) $(TargetCommonOpts) \
                   $(CompileCommonOpts) $(CXX.Flags) -E
-  Link          = $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
+  Link          = $(Compile.Wrapper) \
+	          $(BUILD_CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) \
 		  $(LD.Flags) $(LDFLAGS) \
                   $(TargetCommonOpts) $(CompileCommonOpts) $(Strip)
 else
-  Compile.C     = $(CC) $(CPP.Flags) $(C.Flags) $(CFLAGS) $(CPPFLAGS) \
+  Compile.C     = $(Compile.Wrapper) \
+	          $(CC) $(CPP.Flags) $(C.Flags) $(CFLAGS) $(CPPFLAGS) \
                   $(TargetCommonOpts) $(CompileCommonOpts) -c
-  Compile.CXX   = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) $(CPPFLAGS) \
+  Compile.CXX   = $(Compile.Wrapper) \
+	          $(CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) $(CPPFLAGS) \
                   $(TargetCommonOpts) $(CompileCommonOpts) -c
-  Preprocess.CXX= $(CXX) $(CPP.Flags) $(TargetCommonOpts) $(CPPFLAGS) \
+  Preprocess.CXX= $(Compile.Wrapper) \
+	          $(CXX) $(CPP.Flags) $(TargetCommonOpts) $(CPPFLAGS) \
                   $(CompileCommonOpts) $(CXX.Flags) -E
-  Link          = $(CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) $(LD.Flags) \
+  Link          = $(Compile.Wrapper) \
+	          $(CXX) $(CPP.Flags) $(CXX.Flags) $(CXXFLAGS) $(LD.Flags) \
                   $(LDFLAGS) $(TargetCommonOpts)  $(CompileCommonOpts) $(Strip)
 endif
 
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