Fix incomplete LIBS flattening and substitution in Program scanner

2 files changed, 39 insertions, 3 deletions

diff --git a/src/engine/SCons/Scanner/Prog.py b/src/engine/SCons/Scanner/Prog.py
index 49e93a56..848f8743 100644
--- a/src/engine/SCons/Scanner/Prog.py
+++ b/src/engine/SCons/Scanner/Prog.py
@@ -38,6 +38,15 @@ def ProgramScanner(**kw):
     ps = SCons.Scanner.Base(scan, "ProgramScanner", **kw)
     return ps
 
+def _split_libs(env, libs):
+    """
+    Substitute environment variables and split into list.
+    """
+    libs = env.subst(libs)
+    if SCons.Util.is_String(libs):
+        libs = libs.split()
+    return libs
+
 def scan(node, env, libpath = ()):
     """
     This scanner scans program files for static-library
@@ -51,9 +60,11 @@ def scan(node, env, libpath = ()):
         # There are no LIBS in this environment, so just return a null list:
         return []
     if SCons.Util.is_String(libs):
-        libs = libs.split()
+        libs = _split_libs(env, libs)
     else:
         libs = SCons.Util.flatten(libs)
+        libs = map(lambda x: _split_libs(env, x) if SCons.Util.is_String(x) else x, libs)
+    libs = SCons.Util.flatten(libs)
 
     try:
         prefix = env['LIBPREFIXES']
@@ -83,7 +94,6 @@ def scan(node, env, libpath = ()):
     adjustixes = SCons.Util.adjustixes
     for lib in libs:
         if SCons.Util.is_String(lib):
-            lib = env.subst(lib)
             for pref, suf in pairs:
                 l = adjustixes(lib, pref, suf)
                 l = find_file(l, libpath, verbose=print_find_libs)
diff --git a/src/engine/SCons/Scanner/ProgTests.py b/src/engine/SCons/Scanner/ProgTests.py
index 144addb1..98e20ccc 100644
--- a/src/engine/SCons/Scanner/ProgTests.py
+++ b/src/engine/SCons/Scanner/ProgTests.py
@@ -73,7 +73,7 @@ class DummyEnvironment(object):
 
     def subst(self, s, target=None, source=None, conv=None):
         try:
-            if s[0] == '$':
+            if isinstance(s, str) and s[0] == '$':
                 return self._dict[s[1:]]
         except IndexError:
             return ''
@@ -223,6 +223,30 @@ class ProgramScannerTestCase8(unittest.TestCase):
         deps = s(DummyNode('dummy'), env, path)
         assert deps == [n1, n2], deps
 
+class ProgramScannerTestCase9(unittest.TestCase):
+    def runTest(self):
+        env = DummyEnvironment(LIBPATH=[ test.workpath("dir") ],
+                               LIBS=['foo', '$LIBBAR'],
+                               LIBPREFIXES=['lib'],
+                               LIBSUFFIXES=['.a'],
+                               LIBBAR=['sub/libbar', 'xyz.other'])
+        s = SCons.Scanner.Prog.ProgramScanner()
+        path = s.path(env)
+        deps = s(DummyNode('dummy'), env, path)
+        assert deps_match(deps, ['dir/libfoo.a', 'dir/sub/libbar.a', 'dir/libxyz.other']), list(map(str, deps))
+
+class ProgramScannerTestCase10(unittest.TestCase):
+    def runTest(self):
+        env = DummyEnvironment(LIBPATH=[ test.workpath("dir") ],
+                               LIBS=['foo', '$LIBBAR'],
+                               LIBPREFIXES=['lib'],
+                               LIBSUFFIXES=['.a'],
+                               LIBBAR='sub/libbar xyz.other')
+        s = SCons.Scanner.Prog.ProgramScanner()
+        path = s.path(env)
+        deps = s(DummyNode('dummy'), env, path)
+        assert deps_match(deps, ['dir/libfoo.a', 'dir/sub/libbar.a', 'dir/libxyz.other']), list(map(str, deps))
+
 def suite():
     suite = unittest.TestSuite()
     suite.addTest(ProgramScannerTestCase1())
@@ -232,6 +256,8 @@ def suite():
     suite.addTest(ProgramScannerTestCase6())
     suite.addTest(ProgramScannerTestCase7())
     suite.addTest(ProgramScannerTestCase8())
+    suite.addTest(ProgramScannerTestCase9())
+    suite.addTest(ProgramScannerTestCase10())
     try: unicode
     except NameError: pass
     else: