diff --git a/modules/webm/libvpx/SCsub b/modules/webm/libvpx/SCsub
index 2daf8c282f7..711000bd9f7 100644
--- a/modules/webm/libvpx/SCsub
+++ b/modules/webm/libvpx/SCsub
@@ -349,7 +349,7 @@ if webm_multithread:
     env_libvpx.add_source_files(env.modules_sources, libvpx_sources_mt)
 
 if webm_cpu_x86:
-    is_clang_or_gcc = ('gcc' in env["CC"]) or ('clang' in env["CC"]) or ("OSXCROSS_ROOT" in os.environ)
+    is_clang_or_gcc = ('gcc' in os.path.basename(env["CC"])) or ('clang' in os.path.basename(env["CC"])) or ("OSXCROSS_ROOT" in os.environ)
 
     env_libvpx_mmx = env_libvpx.Clone()
     if cpu_bits == '32' and is_clang_or_gcc:
diff --git a/platform/server/detect.py b/platform/server/detect.py
index 266b0c5cc90..e921bf4a5f4 100644
--- a/platform/server/detect.py
+++ b/platform/server/detect.py
@@ -56,7 +56,7 @@ def configure(env):
     ## Compiler configuration
 
     if env['use_llvm']:
-        if ('clang++' not in env['CXX']):
+        if ('clang++' not in os.path.basename(env['CXX'])):
             env["CC"] = "clang"
             env["CXX"] = "clang++"
             env["LINK"] = "clang++"
diff --git a/platform/x11/detect.py b/platform/x11/detect.py
index 6a7a426804f..905546e7244 100644
--- a/platform/x11/detect.py
+++ b/platform/x11/detect.py
@@ -86,7 +86,7 @@ def configure(env):
             env.Prepend(CCFLAGS=['-O3', '-ffast-math'])
         else: #optimize for size
             env.Prepend(CCFLAGS=['-Os'])
-     
+
         if (env["debug_symbols"] == "yes"):
             env.Prepend(CCFLAGS=['-g1'])
         if (env["debug_symbols"] == "full"):
@@ -115,12 +115,12 @@ def configure(env):
 
     ## Compiler configuration
 
-    if 'CXX' in env and 'clang' in env['CXX']:
+    if 'CXX' in env and 'clang' in os.path.basename(env['CXX']):
         # Convenience check to enforce the use_llvm overrides when CXX is clang(++)
         env['use_llvm'] = True
 
     if env['use_llvm']:
-        if ('clang++' not in env['CXX']):
+        if ('clang++' not in os.path.basename(env['CXX'])):
             env["CC"] = "clang"
             env["CXX"] = "clang++"
             env["LINK"] = "clang++"