Merging r309979:

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r309979 | mgorny | 2017-08-03 12:41:33 -0700 (Thu, 03 Aug 2017) | 16 lines

[test] Fix clang library dir in LD_LIBRARY_PATH For stand-alone build

Prepend the clang library directory (determined using SHLIBDIR, alike
in clang) to the LD_LIBRARY_PATH to ensure that just-built clang
libraries will be used instead of a previous installed version.

When a stand-alone build is performed, LLVM_LIBS_DIR contains the path
to installed LLVM library directory. The same directory frequently
contains a previously installed version of clang. SHLIBDIR, on the other
hand, is always the build-tree directory, and therefore contains
the freshly built clang libraries.

In a non-stand-alone build, both paths will be the same and therefore
including them both will not cause any issues.

Differential Revision: https://reviews.llvm.org/D30155
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git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/branches/release_50@315224 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 11 insertions, 4 deletions

diff --git a/test/Unit/lit.cfg b/test/Unit/lit.cfg
index ff70123c..3a1da187 100644
--- a/test/Unit/lit.cfg
+++ b/test/Unit/lit.cfg
@@ -41,14 +41,17 @@ elif platform.system() == 'Windows':
     shlibpath_var = 'PATH'
 
 # Point the dynamic loader at dynamic libraries in 'lib'.
+shlibdir = getattr(config, 'shlibdir', None)
+if not shlibdir:
+    lit_config.fatal('No shlibdir set!')
 llvm_libs_dir = getattr(config, 'llvm_libs_dir', None)
 if not llvm_libs_dir:
     lit_config.fatal('No LLVM libs dir set!')
-shlibpath = os.path.pathsep.join((llvm_libs_dir,
+shlibpath = os.path.pathsep.join((shlibdir, llvm_libs_dir,
                                  config.environment.get(shlibpath_var,'')))
 
 # Win32 seeks DLLs along %PATH%.
-if sys.platform in ['win32', 'cygwin'] and os.path.isdir(config.shlibdir):
-    shlibpath = os.path.pathsep.join((config.shlibdir, shlibpath))
+if sys.platform in ['win32', 'cygwin'] and os.path.isdir(shlibdir):
+    shlibpath = os.path.pathsep.join((shlibdir, shlibpath))
 
 config.environment[shlibpath_var] = shlibpath
diff --git a/test/lit.cfg b/test/lit.cfg
index bb592936..0e7de849 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -99,10 +99,13 @@ if clang_tools_binary_dir is not None:
             clang_tools_dir, llvm_tools_dir, config.environment['PATH']))
     config.environment['PATH'] = path
 
+    clang_libs_dir = getattr(config, 'clang_libs_dir', None)
+    if not clang_libs_dir:
+        lit_config.fatal('No Clang libs dir set!')
     llvm_libs_dir = getattr(config, 'llvm_libs_dir', None)
     if not llvm_libs_dir:
         lit_config.fatal('No LLVM libs dir set!')
-    path = os.path.pathsep.join((llvm_libs_dir,
+    path = os.path.pathsep.join((clang_libs_dir, llvm_libs_dir,
                                  config.environment.get('LD_LIBRARY_PATH','')))
     config.environment['LD_LIBRARY_PATH'] = path
 
diff --git a/test/lit.site.cfg.in b/test/lit.site.cfg.in
index dfd0164c..f310b59a 100644
--- a/test/lit.site.cfg.in
+++ b/test/lit.site.cfg.in
@@ -7,6 +7,7 @@ config.llvm_libs_dir = "@LLVM_LIBS_DIR@"
 config.lit_tools_dir = "@LLVM_LIT_TOOLS_DIR@"
 config.clang_tools_binary_dir = "@CLANG_TOOLS_BINARY_DIR@"
 config.clang_tools_dir = "@CLANG_TOOLS_DIR@"
+config.clang_libs_dir = "@SHLIBDIR@"
 config.python_executable = "@PYTHON_EXECUTABLE@"
 config.target_triple = "@TARGET_TRIPLE@"