3 files changed, 4 insertions, 4 deletions
diff --git a/libcutl/build/c/generic/configuration-dynamic.make b/libcutl/build/c/generic/configuration-dynamic.make
index c8cf80a..319a86d 100644
--- a/libcutl/build/c/generic/configuration-dynamic.make
+++ b/libcutl/build/c/generic/configuration-dynamic.make
@@ -1,4 +1,4 @@
-ifneq ($(CC),)
+ifeq ($(filter $(origin CC),undefined default),)
 c_generic := $(CC)
 else
 c_generic := gcc
diff --git a/libcutl/build/cxx/generic/configuration-dynamic.make b/libcutl/build/cxx/generic/configuration-dynamic.make
index d1672cf..c43865a 100644
--- a/libcutl/build/cxx/generic/configuration-dynamic.make
+++ b/libcutl/build/cxx/generic/configuration-dynamic.make
@@ -1,4 +1,4 @@
-ifneq ($(CXX),)
+ifeq ($(filter $(origin CXX),undefined default),)
 cxx_generic := $(CXX)
 else
 cxx_generic := g++
diff --git a/libcutl/build/ld/configuration-lib-dynamic.make b/libcutl/build/ld/configuration-lib-dynamic.make
index 74c8885..63d2ed3 100644
--- a/libcutl/build/ld/configuration-lib-dynamic.make
+++ b/libcutl/build/ld/configuration-lib-dynamic.make
@@ -1,12 +1,12 @@
 ld_lib_type   := archive
 
-ifneq ($(AR),)
+ifeq ($(filter $(origin AR),undefined default),)
 ld_lib_ar     := $(AR)
 else
 ld_lib_ar     := ar
 endif
 
-ifneq ($(RANLIB),)
+ifeq ($(filter $(origin RANLIB),undefined default),)
 ld_lib_ranlib := $(RANLIB)
 else
 ld_lib_ranlib := ranlib