From 14e55b16dfc37df6e7fb0725ea697c32e7c7beb3 Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Tue, 21 Oct 2014 00:36:28 +0000
Subject: [PATCH] Teach lit to filter the host LDFLAGS down from the build
 system and into the CGO build environment. This lets things like -rpath
 propagate down to the C++ code that is built along side the Go bindings when
 testing them.

Patch by Peter Collingbourne, and verified that it works by me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220252 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/modules/AddLLVM.cmake    | 1 +
 test/Bindings/Go/go.test       | 2 +-
 test/Bindings/Go/lit.local.cfg | 1 +
 test/Makefile                  | 1 +
 test/lit.site.cfg.in           | 1 +
 5 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 127d5389d19..81b21fbfb6f 100644
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -657,6 +657,7 @@ function(configure_lit_site_cfg input output)
 
   set(HOST_CC "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}")
   set(HOST_CXX "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1}")
+  set(HOST_LDFLAGS "${CMAKE_EXE_LINKER_FLAGS}")
 
   configure_file(${input} ${output} @ONLY)
 endfunction()
diff --git a/test/Bindings/Go/go.test b/test/Bindings/Go/go.test
index ec860ba4acc..ff0cf90e1d8 100644
--- a/test/Bindings/Go/go.test
+++ b/test/Bindings/Go/go.test
@@ -2,7 +2,7 @@
 ; RUN: env CGO_CPPFLAGS="$(llvm-config --cppflags)" \
 ; RUN:     CGO_CXXFLAGS=-std=c++11 \
 ; RUN:     CGO_LDFLAGS="$(llvm-config --ldflags --libs --system-libs \
-; RUN:                                $(../build.sh --print-components))" \
+; RUN:                                $(../build.sh --print-components)) $CGO_LDFLAGS" \
 ; RUN:     %go test -tags byollvm .
 
 ; REQUIRES: shell
diff --git a/test/Bindings/Go/lit.local.cfg b/test/Bindings/Go/lit.local.cfg
index f366397a2b2..e86595b8cb5 100644
--- a/test/Bindings/Go/lit.local.cfg
+++ b/test/Bindings/Go/lit.local.cfg
@@ -54,3 +54,4 @@ def fixup_compiler_path(compiler):
 
 config.environment['CC'] = fixup_compiler_path(config.host_cc)
 config.environment['CXX'] = fixup_compiler_path(config.host_cxx)
+config.environment['CGO_LDFLAGS'] = config.host_ldflags
diff --git a/test/Makefile b/test/Makefile
index 546266a838f..156009d026c 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -136,6 +136,7 @@ lit.site.cfg: FORCE
 	@$(ECHOPATH) s=@GO_EXECUTABLE@=$(GO)=g >> lit.tmp
 	@$(ECHOPATH) s!@HOST_CC@!$(CC)!g >> lit.tmp
 	@$(ECHOPATH) s!@HOST_CXX@!$(CXX)!g >> lit.tmp
+	@$(ECHOPATH) s!@HOST_LDFLAGS@!$(LDFLAGS)!g >> lit.tmp
 	@$(ECHOPATH) s=@ENABLE_SHARED@=$(ENABLE_SHARED)=g >> lit.tmp
 	@$(ECHOPATH) s=@ENABLE_ASSERTIONS@=$(ENABLE_ASSERTIONS)=g >> lit.tmp
 	@$(ECHOPATH) s=@TARGETS_TO_BUILD@=$(TARGETS_TO_BUILD)=g >> lit.tmp
diff --git a/test/lit.site.cfg.in b/test/lit.site.cfg.in
index 65551c03a87..f3141df3268 100644
--- a/test/lit.site.cfg.in
+++ b/test/lit.site.cfg.in
@@ -22,6 +22,7 @@ config.host_os = "@HOST_OS@"
 config.host_arch = "@HOST_ARCH@"
 config.host_cc = "@HOST_CC@"
 config.host_cxx = "@HOST_CXX@"
+config.host_ldflags = "@HOST_LDFLAGS@"
 config.llvm_use_intel_jitevents = "@LLVM_USE_INTEL_JITEVENTS@"
 config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@"
 config.have_zlib = "@HAVE_LIBZ@"